ISSN 1345-0441

OCCASIONAL PAPERS
No. 58（2017）

No. 58（2017）

鹿児島大学国際島嶼教育研究センター

南太平洋海域調査研究報告

南太平洋海域調査研究報告 No.58 （ 2017 年 3 月）
OCCASIONAL PAPERS No.58 （March 2017）

Future Collaboration on Island Studies
between Pattimura University and Kagoshima University

Edited by YAMAMOTO Sota and LEATEMIA J. Audrey

鹿児島大学国際島嶼教育研究センター
KAGOSHIMA UNIVERSITY RESEARCH CENTER
FOR THE PACIFIC ISLANDS

南太平洋海域調査研究報告No.58（2017）●

PUBLISHED BY
KAGOSHIMA UNIVERSITY RESEARCH CENTER
鹿児島大学国際島嶼教育研究センター
FOR THE PACIFIC ISLANDS
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Korimoto 1-21-24, Kagosima, 890-8580 Japan
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Tel. : +81-99-285-7394
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March 18, 2017www http://cpi.kagoshima-u.ac.jp/index-j.html

鹿児島大学国際島嶼教育研究センター

鹿児島大学国際島嶼教育研究センター●

KAGOSHIMA UNIVERSITY RESEARCH CENTER
FOR THE PACIFIC ISLANDSOCCASIONAL PAPERS No.58（2017）

KAGOSHIMA UNIVERSITY RESEARCH CENTER
FOR THE PACIFIC ISLANDS
南太平洋海域調査研究報告 No.58（ 2017 年 3 月）
OCCASIONAL PAPERS No.58（March 2017）


Future Collaboration on Island Studies
between Pattimura University and Kagoshima University

Edited by YAMAMOTO Sota and LEATEMIA J. Audrey


鹿児島大学国際島嶼教育研究センター
KAGOSHIMA UNIVERSITY RESEARCH CENTER
FOR THE PACIFIC ISLANDS

i

PrefaceThis volume is the outcome of an international workshop “Future Collaboration on
Island Studies between Pattimura University and Kagoshima University” held from 17
to 19 October, 2016 in Kagoshima, Japan. The Memorandum of Understanding for
Academic Cooperation between Pattimura University and Kagoshima University was
concluded in March, 2014, and a workshop “Research and Education Linkage between
Pattimura University and Kagoshima University” was held on 23 June, 2014 in Ambon,
Maluku, Indonesia as an initial step of long-term cooperative research among scientistsof two universities. After the workshop, several collaborative research projects werelaunched, such as ethnobotanical research on crops (e.g., citrus, chili pepper etc.) andentomological research on mosquitoes and black flies in Maluku. The objectives of thisworkshop were to share and discuss issues in small islands especially in Maluku
Province and Kagoshima Prefecture by scientists from different disciplines and topromote more research collaborations between two universities. Eight researchers from
Pattimura University visited Kagoshima with the financial support of Pattimura
University (DIPA-2016) funding, and they discussed challenges and prospects on“general issues”, “conservation of natural resources”, “fishery”, “agriculture” and“agricultural and fishery engineering” in the islands of Maluku and Kagoshima withmany researchers from Kagoshima University. We hope two universities will establish acloser relationship and initiate new collaborative research in the near future.
YAMAMOTO Sota
Research Center for the Pacific Islands,
Kagoshima University
LEATEMIA J. Audrey
Faculty of Agriculture, Pattimura University
March 2017

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Welcome Address
I am honored to have distinguished guests from Pattimura University for this very
important partnership university with Kagoshima University. I hope you will haveenjoyable stay in Kagoshima. The Memorandum of Understanding was concluded in2014, and six scholars from our university participated in a workshop “Research and
Education Linkage between Pattimura University and Kagoshima University” held inyour university. Last year, we invited one scholar from Pattimura University as a visiting
associate professor. We would like to promote our exchange programs more actively.
First of all, I would like to give you a brief overview of our university. Kagoshima
University has a long history and rich tradition in education. The university’s origins canbe traced back to the Hangaku Zoshikan School, which was established in 1773 and was
run under the feudal domain of the Shimazu family.
After the merger of several higher education institutions including the Seventh
Higher School established during the Meiji period (1868-1912), Kagoshima University
inherited this educational tradition and was newly established in 1949 as a national
university. The university has developed into one of the leading comprehensive
universities of Japan.
It is comprised of nine faculties, ten graduate schools and fourteen education andresearch institutes with approximately 9,000 undergraduates and 2,000 post-graduate
students including 300 international students. In 2014, Dr. Akasaki, who graduated fromour Seventh Higher School currently Kagoshima University, was given a Nobel Prize.
Recently, we have to address the population decline in Japan and to promote local
creation in Japan. Based on the characteristics and development potential of Kagoshima,
our university, as a key local engine we are expending effort in the area creation andturning out strong students with the “spirit of enterprise.”
There are many historical spots in this city. I hope you will enjoy not only thiscampus, but also our historical spots, along with the delicious local food, shouchuu(liquor made from sweet potato) and hot springs available in Kagoshima.
Thank you very much for visiting at Kagoshima University.
MAEDA Yoshizane
President of Kagoshima University

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Opening Speech for the Workshop
On behave of the staff of Kagoshima University I would like to express to all the
distinguished guests from Pattimura University: Welcome to our university and thanks
for attending this international workshop “Future Collaboration on Island Studies
between Pattimura University and Kagoshima University.”
Kagoshima University consists of 9 faculties and 10 postgraduate schools with
about 11,000 students and 2,500 staff. We have also 24 education and research institutes
such as Research Center for the Pacific Islands. Kagoshima Prefecture has several active
volcanoes (e.g., Mt. Sakurajima, Kirishima etc.), and also a lot of small islands, such as
Amami-Oshima and Yakushima islands.
We are now promoting two kinds of strategic studies. One is five regional studies
contributing to community development: Islands, Environments, Food and Health,Renewable Energies and Water. The other is several studies with excellent results at a
top international level, such as Infection Control, Biological Diversity, Experimental
Animal Models, the Milky Way Galaxy and Intractable Cancer.
The subject of this workshop is related mainly to the former region studies, and I
hope that discussion about future collaborations on Island Studies between the two
universities will contribute much to the community development in both countries.
I wish a great success of this workshop and an enjoyable stay of all the
distinguished guests in Kagoshima.
SUMIYOSHI Fumio
Executive Vice President (Research),
Kagoshima University

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Photo Album

Group Photo

Welcome and Opening Speech:
SUMIYOSHI Fumio(Executive Vice President (Research),
Kagoshima University)

Speech from Pattimura University:
OSOK Rafael M.
(Head of Research Institute, Pattimura
University)

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Presenter 1: TAKAMIYA Hiroto(Research Center for the Pacific Islands,
Kagoshima University)

Presenter 2: OSOK Rafael M.
(Study Center for Disaster Researchand Climate Change Adaptation(PSPB-API), Pattimura University)

Presenter 3: APITULEY Yolanda M. T. N.
(Faculty of Fisheries and Marine
Science, Pattimura University)

Presenter 4: TORII Takashi(Faculty of Fisheries, Kagoshima
University)

Presenter 5: LIMMON Gino V.
(Maritime and Marine Science Centerof Excellence, Pattimura University)

Presenter 6: FUJII Takuma(Research Center for the Pacific Islands,
Kagoshima University)

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Presenter 7: ABRAHAMSZ James(Research Center for Small Islands,
Coastal Area and Outer Islands,
Pattimura University)

Presenter 8: SUZUKI Mariko(Research Center for the Pacific Islands,
Kagoshima University)

Presenter 9: RAHARJO Simon H. T.
(Faculty of Agriculture, Pattimura
University)

Presenter 10: SAKAI Norio(Faculty of Agriculture, Kagoshima
University)

Presenter 11: LEATEMIA J. Audrey(Faculty of Agriculture, Pattimura
University)

Presenter 12: SAKAMAKI Yoshitaka(Faculty of Agriculture, Kagoshima
University)

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Presenter 13: MALLE Dominggus(Faculty of Agriculture, Pattimura
University)

Presenter 14: HETHARIA Wolter R.
(Faculty of Engineering, Pattimura
University)

Presenter 15: ICHIKAWA Hidetaka(Faculty of Law, Economics andHumanities, Kagoshima University)

Discussion on Future Collaboration:
KAWAI Kei (Director of ResearchCenter for the Pacific Islands,
Kagoshima University)

A gift from Pattimura University
to Research Center for the Pacific Islands, Kagoshima University

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Courtesy call on President MAEDA Yoshizane (Kagoshima University)

Courtesy call on IWAI Hisashi(Dean of Faculty of Agriculture,
Kagoshima University)

Courtesy call on MOMII Kazuro(Dean of the United Graduate School of
Agricultural Sciences, Kagoshima
University)

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Welcome Reception

Visit to Education and Research Center
for Fermentation Studies

Studying Amami culture at the Villageof Amami Island in Kagoshima City

Enjoy Amami cuisine

Excursion to the Experimental Farm, Faculty of Agriculture, Kagoshima University(blueberry, mandarin, Japanese persimmon etc.)

xiContents
Preface・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・i
Welcome Address, Opening Speech and Photo Album・・・・・・・・・・・・・・・・・・・・・・・・・iii

1)

The Islands of Amami and Okinawa Where Hunter-Gatherers Once Throve・・・・・・・・1
TAKAMIYA Hiroto (Research Center for the Pacific Islands, Kagoshima University)

2)

Development of Fresh Fish Marketing in Maluku・・・・・・・・・・・・・・・・・・・・9
APITULEY Yolanda M. T. N. and BAWOLE Dionisius (Faculty of Fisheries and Marine
Science, Pattimura University)

3)

Efforts for Improving the Distribution of Fishery Products in Toshima, Kagoshima
Prefecture・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・17
TORII Takashi (Faculty of Fisheries, Kagoshima University)

4)

The Diversity of Grouper (Epinephelinae) in Ambon Island, Maluku, Indonesia・・・・・・23
LIMMON Gino V.1, 2, RIJOLY Frederik1, 2, KHOUW Abraham S.1, 2, MANUPUTTY Gratia D.1, 2
and PATTIKAWA Jesaya A.1, 2 (1Maritime and Marine Science Center of Excellence,
Pattimura University, 2 Faculty of Fisheries and Marine Science, Pattimura University)

5)

Species Diversity of Hexacorallia around the Satsunan Islands, Japan・・・・・・・・・・・31
FUJII Takuma (Research Center for the Pacific Islands, Kagoshima University)

6)

Identification and Inventory of Coastal and Small Islands Conservation Area in the Lease
Islands, Maluku Province・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・37
ABRAHAMSZ James1, AYAL Frederik W.1, LOPULALAN Yoisye1 and MAKAILIPESSY
Marvin M.2 (1Fisheries and Marine Science Faculty, Pattimura University, 2Polytechnic of
Fisheries, Tual)

7)

Assessment of the Impact of Wildlife Tourism on Animals: A Case Study of Amami-OshimaIsland・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・45
SUZUKI Mariko1, INOUE Eiji2, ITO Keiko3 and FUJITA Shio4 (1Research Center for the
Pacific Islands, Kagoshima University, 2Faculty of Science, Toho University, 3Yuinoshima
Animal Clinic, Amami, 4Joint Faculty of Veterinary Medicine, Kagoshima University)

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xii
8)

Cassava and Sweet Potato in Western Seram, Maluku Province: Diversity, Cultivation andUtilization・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・51
RAHARJO Simon H. T.1, HETHARIE Helen1, AUGUSTYN Gelora H.1 and PESIRERON
Maritje2 (1Faculty of Agriculture, Pattimura University, 2Maluku Agricultural Technology
Assessment Board)

9)

Production and Distribution of Potatoes in the Kagoshima Island Areas・・・・・・・・・・63
SAKAI Norio (Faculty of Agriculture, Kagoshima University)

10) Productivity of Nutmeg (Myristica spp.) in Agroforestry System (Dusung) in Ambon
Island・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・69
LEATEMIA J. Audrey, REHATTA Herman, ULUPUTTY M. Riadh and MAHULETE Asri S.
(Faculty of Agriculture, Pattimura University)11) A Newly Invasive Long-Horned Beetle from Mainland Kyushu Attacks Citrus Trees in the
Amami Islands・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・77
SAKAMAKI Yositaka, TSUDA Katsuo and MIYAKE Masataka (Faculty of Agriculture,
Kagoshima University)12) Design and Application of Unsinkable Tuna Longboat for Local Fishermen・・・・・・・・83
HETHARIA Wolter R. and METEKOHY Obed (Faculty of Engineering, Pattimura University)13) Renewable Energy Makes Life Style Change: An Example of Yakushima Island’s Zero
Emissions・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・91
ICHIKAWA Hidetaka (Faculty of Law, Economics and Humanities, Kagoshima University)

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南太平洋海域調査研究報告
OCCASIONAL PAPERS

No.58（2017 年 3 月）
No.58（March 2017）

The Islands of Amami and Okinawa
Where Hunter-Gatherers Once Throve
TAKAMIYA Hiroto
Research Center for the Pacific Islands, Kagoshima University

Abstract
Many islands in the world were colonized by Homo sapiens (modern human) after 10,000 years ago.
Considering the high degree of adaptability of H. sapiens, who were all hunter-gatherers prior to 10,000
years ago, to various environments, one might wonder why the colonization of islands was recent
phenomenon in human history. Archaeologists and anthropologists have examined human colonization
processes to island environments and come up with several reasons: the low level of water crossing
technology, difficulties in finding adequate amount of food in newly arrived islands, also difficulties ofsmall human population group avoiding natural disasters and diseases and so on.
Among these the most challenging thing for hunter-gatherers was how to obtain enough foodresources in resource poor island environments. Hunter-gatherers move quite often, changing their camps
from one place to another. Most archaeologists and anthropologists argue that many islands in the world
are/were not large enough for mobile hunter-gatherers successfully colonize them. Therefore, most of themwere colonized after agriculture was invented at around 10,000 years ago.
Rarely, exceptions exist. That is small number of islands were colonized by hunter-gatherers. Theseislands are characterized by as follows: 1) large islands, 2) islands closely located from a continent or large
island, 3) large sea mammals more or less constantly available, 4) hunter-gatherers translocated edible
plants and animals from their mother lands to islands and 5) if combination of 1) to 4) is possible.
None of these are/were applicable to the islands in the Amami and Okinawa archipelagos. Therefore,
some archaeologists and anthropologists proposed the Shellmidden period (ca. 6,500 BP to 1,000 BP)
agriculture hypotheses. Archaeologists and anthropologists have worked intensively for the last twenty
years or so especially focusing on faunal and plant remains. The former contained only wild animals except
the dog. The latter too mainly consisted of wild species except the bottle gourd. The results of the analyses
strongly indicate that the hunter-gatherers successfully adapted the islands. The data is an extremely uniqueand important case in human history.
Keywords: archaeobotanical analysis, faunal analysis, Homo sapiens, island colonization, the Shellmidden
period2
TAKAMIYA Hiroto

Introduction
Homo sapiens (or modern human) emerged in Africa sometime between 200,000 and
100,000 years ago and soon after that they spread from there to all continents, except
Antarctica. They reached Australia by about 50,000 years ago, to Europe and East Asia ca.
40,000 years ago. From Siberia, they entered into North America (Alaska) at about 15,000
years ago. Astonishingly, they expanded from the northern North America to the southern tip
of South America within less than 5,000 years. This spread from the northern tip to thesouthern tip by 10,000 years ago demonstrates high degree of adaptability of H. sapiens into
various environments. Since every human being living at that time was hunter-gatherers, thefact simultaneously indicates high degree of adaptability of hunter-gatherers into different
kinds of environments.
While hunter-gatherers adapted into various environments, they had extremely difficult
time conquering island environments. Indeed most islands were colonized after 10,000 years
ago. The main reason is that hunter-gatherer populations could not or do not colonize small
depauperated islands. Thus, it has been hypothesized that in order for modern humans to
successfully colonize islands, food production is necessary (CHERRY 1981). Were theyhunter-gatherers or farmers who colonized the islands of the Amami and Okinawa
archipelagos?

BackgroundPrehistory of this region begins with the Paleolithic period (ca. 32,000 to 10,000 BP; see
Table 1 for chronology). The earliest known site is the Yamashita cho No.1 cave site, dating to
ca. 32,000 years ago, on Okinawa Island. In the Okinawa Archipelago, eight Paleolithic sites
are reported. In the Amami Archipelago, the number of known Paleolithic sites is five. The
Paleolithic period is followed by the Shellmidden period (ca. 7,000 to 1,000 BP). This period
is characterized by the emergence of pottery culture. The earliest pottery in this region until
recently is known as the finger-nailed pottery and the plain pottery, dating about 6,500 to
7,000 years ago. Pottery culture might go back to 7,000 to 9,000 years ago by the recent
findings from the Kikai sogo ground site, the Minatogawa fissure site, and the Tiiragama site
(TAKAMIYA et al. unpublished data). At about 1,000 years ago, the Gusuku culture began. This
period is characterized by the beginning of food production, the use of iron tools, the long
distant exchange and the emergence of the stratified societies.
This brief review of the prehistory of the region shows that agriculture was establishedby the Gusuku period. Also, since the Paleolithic people were hunter-gatherers worldwide, it
implies probably hunter-gatherers lived on the islands during the Paleolithic period too. The

3
The Islands of Amami and Okinawa Where Hunter-Gatherers Once Throve

Table 1. Chronology of the Amami and Okinawa archipelagos.
Amami and Okinawa

Mainland Japan(except Hokkaido)

GusukuMuromachi-Kamakura

1,400 BP

Shellmidden
Late 2

Heian-Asuka

2,600 BP

Shellmidden
Late 1

Kofun
Yayoi

3,000 BP

Shellmidden
Early 5

Final Jomon

4,000 BP

Shellmidden
Early4Late Jomon

5,000 BP

Shellmidden
Early 3

Middle Jomon

6,000 BP

Shellmidden
Early 27,000 BP

Shellmidden
Early 1

ca. 1,100/1,200
1,500 AD～

Beginning ofPottery culture?

～

10,000 BP
32,000 BP

Early Jomon

Initial Jomon
Incipient Jomon

Paleolithic
Paleolithic*Table shows approximate comparison with the mainland Japan. They do no perfectly
correspond between these two regions.

biggest question is whether the people of the Amami and Okinawa archipelagos during theShellmidden period depended on wild resources or agricultural products.

The Shellmidden Islanders: Were They Hunter-Gatherers or Agriculturists?
As mentioned above, most islands in the world were colonized by hunter-gatherers.
Exceptionally, several islands were colonized by hunter-gatherers. These islands arecharacterized by as follows: 1) large islands, such as Tasmania, 2) islands located closely froma continent or a large island such as the California Channel Islands, 3) islands where sea
mammals are reliable as food source such as Kodiak Island, 4) hunter-gatherers translocatededible plants and/or animals from their mother land, such as Manus Island and 5) if

4TAKAMIYA Hiroto

combination of 1) to 4) is possible, such as the California Channel Islands. None of theseapplies to the islands of Amami and Okinawa prehistorically including the Shellmidden
period (TAKAMIYA et al. 2016). Therefore, it is extremely important to address the question
entitled for this session. In order to answer the question, let me examine faunal remains first,
and then review plants consumed by the Shellmidden people.
Faunal remains
Archaeologists constantly collected faunal remains since almost the same time whenarchaeological work was first introduced into the region, some one hundred years ago. It is
important to note that since 1990s, faunal remains have been sampled and analyzed by
specialists. TOIZUMI (2014) has been working on vertebrate remain analysis, and KUROZUMI(2014) has been analyzing shell remains from archaeological sites since 1990s. They haveapplied meticulous methods in order to collect small sized animal remains, such as using
1 mm sized mesh screening. Consequently, they are able to analyze faunal remains larger than
1 mm. TOIZUMI’s analysis (2014) has revealed all vertebrate remains recovered from the sites
were wild species, except the dog. According to him, important vertebrate animal foods were
wild boar and fishes available from the coral reef environment. No site is known where sea
mammals preoccupy vertebrate remains. Indeed the carbon and nitrogen isotope analysis
demonstrates sea mammals were not important food (TAKAMIYA and CHISHOLM 2004,
YONEDA 2010). Also, the vertebrate remains contain no tranlocated animal foods from theoutside, except the dog. KUROZUMI (2014) sees no signs of shellfish farming from theshellfish remains from the archaeological sites. Thus, in terms of faunal remains, people lived
there during the Shellmidden period relied on wild animal species.
Plant remains
What about plant foods? Compared with faunal remains, since plant remains were small
and very fragile, it had been difficult to unearth plant remains. As a result, only two sites in
the Amami Archipelago (NAKAYAMA 2009) and eight sites in the Okinawa Archipelago
yielded plant remains prior to 1991 (WATANABE 1991). The plant remains recovered andidentified from these sites were all wild plants such as nuts. These pieces of information
imply that the Shellmidden people were gatherers of the wild plants. However, since theamount of plant remains recovered from these sites are fragmentally, and at the same timesince the number of sites which yielded plant remains was only ten, some scholars proposed
the Shellmidden agriculture hypotheses (e.g., YANAGITA Kunio, NITTA Jusei, TAKAMIYA Hiroe,
SATO Yoichiro, ITO Shinji and TAKAMIYA Hiroto, see TAKAMIYA 2005).
In order to understand subsistence economy of the Shellmidden period, flotation was
first introduced into the region in 1992. Flotation was developed by archaeologists in order tocollect carbonized plant remains, such as carbonized seeds, efficiently from archaeological

5
The Islands of Amami and Okinawa Where Hunter-Gatherers Once Throvesites. From several archaeological sites dating from the Early 2 to the Late 2 periods, soil
samples were collected. Also around 2000, wetland sites were excavated for the first time inthis region. From these wetland sites numerous amounts of plant remains were recovered andidentified by OMATSU and TSUJI (1999), TAKAMIYA (1999), TAKAMIYA (2006) and TSUJI et al.
(2007). Below, plant remains recovered from the Shellmidden sites will be briefly introduced.
The Early 1: the Shinjoshichabaru No.2 site
The site is a wetland site and yielded one of the earliest pottery, finger-nailed pottery.
14

The C date of wild boar was cal. BC 5050–4910. The site unearthed more than 20 taxa ofplant remains. All belonged to wild species, such as red bayberry and silvervine (TAKAMIYA
2006).
The Early 2: the Ireibaru site
This site is also a wetland site and yielded the Sobata pottery. The 14C dates ranged
between cal. BC 4250–3770. TSUJI et al. (2007) analyzed plant remains from the site andreport numerous amounts of nuts species. In addition to nuts species, they have reported morethan 60 taxa, all of which belonged to wild species, except bottle gourds. While plant remains
recovered from the Hango site is still in the process of analysis, all plant remains identified so
far are nuts (TSUJI et al. 2007).
The Early 3 to the Early 4: the Omonawa No. 4 site
A small amount of soil samples was collected and processed by flotation. Consequently,
only few plant remains were collected and identified. They were nuts and silvervine(TAKAMIYA unpublished data).
The Early 4: the Mebaru site
This site was a wetland site and the 14C dates range between cal. BC 2300–1940.
OMATSU and TSUJI (1999) report 50 taxa and TAKAMIYA (1999) identified at least 30 taxa.
They all belonged to wild species. OMATSU and TSUJI (1999) mention a large amount of nuts
was recovered. The Kuzuri site, which dates to this period and whose plant remains have beenin the process of analysis, has so far yielded only wild species (TAKAMIYA unpublished data).
The Early 5: the Sumiyoshi Shellmidden
This site unearthed several house pits, and soil samples were mainly collected from thesefeatures. The 14C dates ranged between cal. BC 1540–1210. The result of plant remain
analysis showed all plant remains were wild species such as nuts. The Tobaru site, theNakazato site and the Nishinagahamabaru site, which belong to the Early 5 also yielded only
wild species (TAKAMIYA et al. 2016).

6
TAKAMIYA Hiroto

The Late 1: the Takachikuchibaru Shellmidden
The Takachikuchibaru Shellmidden was the first site where flotation was applied in thearchipelagos. Therefore, a large amount of soil samples was collected for flotation. While alarge amount of soils was processed by flotation, the plant remains from the site did notcontain any cultigens. Again, all of them were wild species such as nuts (TAKAMIYA et al.
2016).
The late Late 1 to the Late 2: the Yomisaki, Arago, Matsumoto and Nagarabaru Higashi sites
The first three are located on Amami-Oshima Island, and the last one on Ie Island in the
Okinawa Archipelago. All sites yielded only wild plant remains (TAKAMIYA et al. 2016).
The late Late 2 to the Initial Gusuku period
Cultigens appear for the first time in flotation samples dating to this period. The
Nazakibaru site, Kumuibaru site, Uganhira-hoppo site and Yabumedabaru site on themainland of Okinawa yielded barley, wheat, foxtail millet and broomcorn millet. The Gusuku
site group (among them, plant remains were analyzed from the Yamada-nakanishi,
Yamada-handa, Maehata, Kohane and Oufu sites) on Kikaijima Island and Akakina gusuku
site on Amami-Oshima Island unearthed barley, wheat, foxtail millet and broomcorn millet.
The 14C dates of these cultigens are between the ninth to twelfth centuries AD, indicating thetransition from hunting and gathering to food production took place at about this time. At thesame time, it has become evident that people lived on the islands prior to this time (theShellmidden period) were hunter-gatherers (TAKAMIYA et al. 2016).

Discussion and Conclusion
Were people of the Shellmidden period hunter-gatherers or farmers? Faunal remain
analyses have demonstrated that they relied on wild animals for foods. Recent intensive
archaeological work focusing on recovering plant remains using flotation successfullycollected plant remains from sites dating to the Early 2 to the Late 2. In addition, fortunately
enough the wetland archaeological sites were excavated for the first time, and numerous
amounts of plant remains were recovered from these sites. The results of plant remains
analyses unearthed from most of the Shellmidden sites contained no cultigens but all wild
plants. The results strongly indicate that the Shellmidden people were gatherers of the wild
plants. Thus the answer to the above question is, they were hunter-gatherers.
In the background section, I have mentioned very rare cases where hunter-gatherers
adapted island environments. The Amami and Okinawa archipelagos case do not belong tothese five cases. Thus, the Amami and Okinawa case provide a new perspective of

7
The Islands of Amami and Okinawa Where Hunter-Gatherers Once Throve

hunter-gatherer adaptation to the islands. While we still need more data, the Early 1 people
relied on nuts and wild boar, the Early 2 on nuts and inner bay fishes and from the Early 3 tothe Late 2 on nuts and coral reef fishes. Also the shellfish species inhabits in the coral reef
environment played important role during the entire Shellmidden period. These are newstrategies which enabled hunter-gatherers successfully colonize island environments. The casefrom Amami and Okinawa archipelagos provides an extremely rare case in human history.

References
CHERRY, J. F. 1981. Pattern and Process in the Earliest Colonization of the Mediterranean
Islands. Proceedings of the Prehistoric Society, 47: 41–68.
KUROZUMI, T. 2014. Kairui Itai kara mita Okinawa Shotou no Kankyou Henka to Bunka
Henka (Environmental and Cultural Changes in the Okinawa Archipelago as Seen from
Shellfish Remain Analysis). In: Ryuukyuu Rettou Senshi/Genshi Jidai no Kankyou to
Bunka no Hensen Vol. 2, Ryuukyuu Rettou Senshi/Genshi Jidai ni okeru Kankyou to
Bunka no Hensen ni kansuru Jisshou teki Kenkyuu Ronbunshuu (The Cultural andEnvironmental Changes during the Prehistoric and Protohistoric Times in the Ryukyu
Archipelago Vol. 2, The Collections of Papers on the Empirical Studies on the Culturaland Environmental Changes during the Prehistoric and Protohistoric Times in the
Ryukyu Archipelago) (Eds. TAKAMIYA, H. and SHINZATO, T.), 55–70, Rokuichi Shobō,Tokyo, Japan (in Japanese).
NAKAYAMA, K. 2009. Horidasareta Amami (Excavated Amami), 154 pp., Zaidan Hojin
Amami Zaidan, Amami City, Kagoshima, Japan (in Japanese).
OMATSU, S. and TSUJI, S. 1999. Mebaru Iseki kara Sanshutsu shita Oogata Shokubutsu Itaigun(Macro Plant Remains Recovered from the Mebaru Site). In: Mebaru Isaki (The Mebaru
Site) (Ed. GINOZA-SON KYOUIKU IINKAI), 223–241, Ginoza-Son Kyouiku Iinkai, Ginoza
Village, Okinawa, Japan (in Japanese).
TAKAMIYA, H. 1999. Saibaishokubutsu no Tansaku (Search for Cultigens). In: Mebaru Isaki(The Mebaru Site) (Ed. GINOZA-SON KYOUIKU IINKAI), 259–275, Ginoza-Son Kyouiku
Iinkai, Ginoza Village, Okinawa, Japan (in Japanese).
TAKAMIYA, H. 2005. Shima no Senshigaku: Paradaisu deha nakatta Okinawa Shotou no
Senshi Jidai (Prehistory of the Islands: Prehistory of the Okinawa Archipelago Was Not a
Paradaise), 227 pp., Boder Inku, Naha, Okinawa, Japan (in Japanese).
TAKAMIYA, H. 2006. Shokubutsu Itai (Plant Remains). In: Aragusuku Shichabaru Dai 2 Iseki(The Aragusuku Shichabaru No.2 Site) (Ed. OKINAWA-KEN MAIZO BUNKAZAI SENTA),
259–275, Okinawa-Ken Maizo Bunkazai Senta, Nishihara Town, Okinawa, Japan (inJapanese).

8
TAKAMIYA Hiroto

TAKAMIYA, H. and CHISHOLM, B. S. 2004. Okinawa Shotou Joumon Jidai Bankijin oyobi
Kinseijin wa Nani wo Tabetaka (What Final Jomon and Recent Populations Ate, Basedon Carbon and Nitrogen Isotope Analysis). In: Gusuku Bunka wo Kangaeru (To Examine
the Gusuku Culture) (Ed. NAKIJIN VILLAGE BOARD OF EDUCATION), 401–416, Shin
Jinbutsu Ouraisha, Tokyo, Japan (in Japanese).
TAKAMIYA, H., HUDSON, M. J., YONENOBU, H., KUROZUMI, T. and TOIZUMI, T. 2016. An
Extraordinary Case in Human History: Prehistoric Hunter-Gatherer Adaptation to theIslands of the Central Ryukyus (Amami and Okinawa Archipelagos), Japan. The
Holocene, 26(3): 408–422.
TOIZUMI, T. 2014. Sekitsui Doubutsu Itai kara mita Ryuukyuu Rettou no Kankyou Henka to
Bunka Henka (Environmental and Cultural Changes as Seen from Vertebrate Analysis).
In: Ryuukyuu Rettou Senshi/Genshi Jidai no Kankyou to Bunka no Hensen Vol. 2,
Ryuukyuu Rettou Senshi/Genshi Jidai ni okeru Kankyou to Bunka no Hensen ni kansuru
Jisshou teki Kenkyuu Ronbunshuu (The Cultural and Environmental Changes during thePrehistoric and Protohistoric Times in the Ryukyu Archipelago Vol. 2, The Collectionsof Papers on the Empirical Studies on the Cultural and Environmental Changes during
the Prehistoric and Protohistoric Times in the Ryukyu Archipelago) (Eds. TAKAMIYA, H.
and SHINZATO, T.), 71–86, Rokuichi Shobou, Tokyo, Japan (in Japanese).
TSUJI, S., OMATSU, S. and TSUJI, K. 2007. Ireibaru Iseki no Shokubutsu Itaigun (The Plant
Remains Recovered from the Ireibaru Site). In: Ireibaru Iseki (The Ireibaru Site) (Ed.
CHATAN-CHO KYOUIKU IINKAI), 433–444, Chatan-Cho Kyouiku Iinkai, Chatan Town,
Okinawa, Japan (in Japanese).
WATANABE, M. 1991. Kyuna Higashibaru Nubataki Iseki Shutsudo no Shokubutsu Itai (Plant
Remains Recovered from the Nubataki Site). In: Nubataki (The Nubataki Site) (Ed.
GINOWAN-SHI KYOUIKU IINKAI), 114–121, Ginowan-Shi Kyouiku Iinkai, Ginowan City,
Okinawa, Japan (in Japanese).
YONEDA, M. 2010. Shokuseitai ni miru Joumon Bunka no Tayousei (The Cultural Diversity of
Jomon Based on Consumption Ecology). Kagaku, 80(4): 383–390 (in Japanese).

9
南太平洋海域調査研究報告
OCCASIONAL PAPERS

No.58（2017 年 3 月）
No.58（March 2017）

Development of Fresh Fish Marketing in Maluku
APITULEY Yolanda M. T. N. and BAWOLE Dionisius
Faculty of Fisheries and Marine Science, Pattimura University

Abstract
In modern marketing concepts, markets are no longer positioned at the end of the process, but in the
beginning of production. By that means, the ultimate goal of a production is markets or consumers.
Geographical condition of Maluku which has thousands of small islands leads for its abundant fresh fish.
However, characteristics of fresh fish such as seasonal and perishable, added by the distance of production
and consumption center as well as inadequate facilities, resulted in the need of development of island-based
marketing. The purpose of this study is to develop marketing of fresh fish in Maluku which is known as
one of the archipelago provinces in Indonesia. Based on the results of Strengths, Weaknesses, Opportunities
and Threats (SWOT) analysis, the position of fresh fish marketing system in Maluku is in Growth Oriented
Strategy. It means that the strategy adopted in this condition should support the aggressive growth policy.
These strategies are: 1) improving the infrastructures of production and marketing of fresh fish, 2)
integrating facilities and infrastructures of production, marketing and processing, 3) improving skills offisher folks in fish handling and processing, 4) increasing cooperation with financial institutions in theprovision of venture capital, 5) improving function of marketing institutions and 6) establishing an agency
that has a mandate to stabilize prices of fisheries products.
Keywords: archipelago, fisheries products, Growth Oriented Strategy, policy, SWOT analysis

Introduction
Fresh fish are highly perishable and damaged; the production centrals are scattered andfar from consumption centers. As they are seasonal, while the consumption of them is stablethroughout year, a special treatment is required to maintain their quality and durability(GALLEGATI et al. 2011, HANAFIAH and SAEFUDDIN 2006). The price of fresh fish is fluctuated,leads to complicated of business prediction, both in the calculation of profit and loss, as wellas risk management (BRINSON et al. 2011).
Unimplemented properly cold chain in post-harvest handling lower the fishermenbargaining position (HANAFIAH and SAEFUDDIN 2006), so they tend to get results that are notin accordance with the risk level of their jobs. To make these activities well developed, somerequirements are needed, such as high quality of products and able to take advantage ofmarket opportunities.
Maluku has 1,340 small islands, divided in one city and ten regencies. Those islands
spread with inadequate infrastructures which make transportation to and from those islands

10
APITULEY Yolanda M. T. N. and BAWOLE Dionisius

are very dangerous. This condition is also influenced the marketing process of fisheries
products in Maluku that could lead to the lower fishermen revenue. Therefore, this paper isaimed to analyze the strategy of fresh fish (fisheries products) marketing in Maluku.

Research Method
Fresh fish marketing system survey was conducted to all stakeholders (fishermen,
collectors, retailers and bureaucrats) who involved in that system by using questionnaire andobservation. Strategy of fresh fish marketing was developed through Strengths, Weaknesses,
Opportunities and Threats (SWOT) analysis. Each SWOT factor was scored from 1 (mostimportant) to 0 (unimportant) and rating was scaled 4 to 1. For internal factors (strength andweakness): strength rating will be 4 when the factor is very strong, and vice versa. Weakness
rating will be -1 when the factor is very weak, and on the contrary it will be -4 when it isweak. For external factors (opportunity and threat): the bigger the opportunity, the higher (4)the rating, and vice versa. The rating threat will be -1, when it is high, and will be -4 when it
is low (RANGKUTI 2002).

Results and Discussion
Internal and external factors of fresh fish marketing
Based on the SWOT analysis, the condition of fresh fish marketing system in Maluku isin Quadrant I (0.8; 2.2) (Fig. 1, Table 1), which means support aggressive strategy or Growth
Oriented Strategy (RANGKUTI 2002). By that, the strategy produced should support aggressive
development policy.

Fig. 1. Grand Strategy Diagram of fresh fish marketing in Maluku.

11
Development of Fresh Fish Marketing in Maluku

Table 1. Analysis of internal and external factors.
Internal and External Factors

WeightRating

Score

Strengths
1High potency of fish resources

0.10

3

0.30

2

Many islands make fish available anytime

0.07

2

0.14

3

Transportation available

0.05

2

0.10

4

Maluku was declared as National Fish Granary

0.10

3

0.30

5

Ambon was determined as minneapolitan area

0.10

3

0.30

6

Maluku was determined as one of economic development
accelerating corridor in East Indonesia

0.10

3

0.30

Availability of cold storage

0.05

2

0.10

7

Weaknesses1

Low of fishermen awareness in maintaining fish quality

0.05

-1

-0.05

2

Limited capital

0.04

-1

-0.04

3

Low of fishermen bargaining position

0.04

-1

-0.04

4

Production areas spread and far from consumption areas

0.03

-2

-0.06

5

Fish Auction Place is only in Ambon and not functioned

0.03

-3

-0.09

6

Limited marketing infrastructures

0.04

-2

-0.08

7

High marketing cost

0.02

-3

-0.06

8

Fluctuation of fish price

0.04

-2

-0.08

9

Market structure tend to oligopoly

0.05

-1

-0.05

10

Low of market integration

0.05

-1

-0.05

11

Low market information

0.02

-4

-0.08

12

Limited alternative of processed product diversification

0.02

-3

-0.06

Total score strengths-weaknesses

1.00

0.80

Opportunities
1

Increasing of population in Maluku

0.10

3

0.30

2

Increasing of community’s awareness in eating fish

0.10

3

0.30

3

Potential market outside Maluku

0.20

4

0.80

4

Increasing of income per capita and purchasing power

0.10

3

0.30

5

Government attention to fishermen

0.20

4

0.80

Threats
1

Illegal, Unreported and Unregulated fishing in Maluku

0.10

-1

-0.10

2

Unregularly sea patrols

0.10

-2

-0.20

Total score opportunities-threats

1.00

2.20

12
APITULEY Yolanda M. T. N. and BAWOLE Dionisius

Development strategy of fresh fish marketing system in Maluku
Aggressive marketing development policy means a policy of marketing system fromupstream to downstream. That policy covers product availability, production infrastructure
provision, product handling and processing, fishermen capacity building and marketing
infrastructure support development. Table 2 shows strategies produced based on external andinternal factors identification.
Table 2. Qualitative SWOT analysis of fresh fish marketing in Maluku.
Internal Environment

Strengths (S)1 Highpotency

Weaknesses (W)

of

fish

1 Low of fishermen awareness inmaintaining fish quality

resources
2 Many islands make fish

2 Limited capital
3 Low

available anytime
4 Maluku was declared as

fishermen

bargaining

4 Production areas spread and far fromconsumption areas

National Fish Granary
5 Ambon was determined as

5 Fish Auction Place is only in Ambon
and not functioned

minneapolitan area
6 Maluku was determined asoneofposition

3 Smooth transportationofeconomicdevelopment

accelerating

corridor in East Indonesia
7 Availability of cold storage

6 Limited marketing infrastructures
7 High marketing cost
8 Fluctuation of fish price9 Market structure tend to oligopoly
10 Low of market integration
11 Low market information

External Environment

12 Limited alternative of processed
product diversification

Opportunities (O)SO strategies

WO strategies

1 Increasing of population in 1 Develop environment insight 1
ofMaluku2 Increasing of community’sawareness in eating fish
3 Potential

marketoutside4 Increasing of income percapita and purchasing power
5 Government

attentiontofishery business (W2,8;O1,2,3,4,5)(S1,2,4,5,6; O1,2,3,4)
2 Integration development of 2

Increasing skills of fish handling andprocessing and marketing

processing (W1,3,11,12; O1,2,3,4,5)
3

3 Increasing
handlingskillsandof

Threats (T)Unrepported

Unregulated

fishing

Maluku2 Unregularly sea patrols

Improving marketing institutions
function (W4,5,6,7,9,10; O1,2,3,4,5)(S1,2,3,4,5,6,7; O1,2,3,4,5)
fish 4Forming institution that has mandate
to stabilize fresh fish price (W7;processing

O1,2,3,4,5)(S1,2, 3,4,5,6; O1,2,3,4,5)

fishermen

Improving cooperation with financeinstitutions in providing capital for

fishery

infrastructures

Maluku1 Illegal,

captureST strategies
andin

1 Integrated

WT strategies

controlby 1
2(S1,2,3,4; T1,2)
2 Tighten

mechanism

controlling3
material

distribution (S1,2,3,4,5,6,7;
T2)

and

marketing(W1,2,3,4,5,6,7,8,9,10,11,12; T1,2)

functionraw

Improving infrastructure of fish
production

and(S1,2,3,4,5,6; T1,2)
3 Improving

Improving sea security capacity(W3;T1)

involving local community

Tighten mechanism and controlling
functionO1,2)(W1,2,3,5,6,7,8,9,10,11;

13Development of Fresh Fish Marketing in Maluku

SO strategies
When strengths (S) are combined with opportunities (O) that happened due to current
global economic improvement, it will result some SO strategies as below.
1) Improvement the environment insight of capture fishermen2) Integration of processing and marketing infrastructures
3) Increasing skills of fish handling and processing
Increasing of population and awareness of fish consumption as well as community’s
income and purchasing power are challenges for fishermen to catch fish at most. Imbalance offish resources exploitation and reproduction capacity resulted in catching pressure in someplaces in Maluku. Fishery resources condition in Fishery Management Area (FMA) Maluku
in 2010 showed that almost all kinds of fish were in maximum exploitation/fully exploitedand over fishing (PURBAYANTO 2011). The essence of environmental fisheries development is
to manage fisheries resources in sustain. Limitation input control on catching efforts is one ofmanagement strategies, in addition to regulation of catching gears selectivity and catchingtime limitation (PURBAYANTO 2011). Furthermore, WIDODO and SUADI (2006) stated that, theprinciple of fisheries regulation can be approached by two methods: 1) input arrangements
such as catching restrictions through licensing, size of vessels and fishing gears, as well ascatching time and 2) output arrangement such as determination of catching allowed anddividing quota according to fleets, companies and fishermen.
Abundantly of fish resources in Maluku is not followed by the ability of fishermen as
producers and fish traders to maintain the quality. Therefore, the price of it can be muchfluctuated, even in a day sales. Improving of handling and processing skills in harvest andpost-harvest time as well as integrating the facilities of processing and marketing is a must, so
the system gives balanced share to effort. Fishermen processing skills should also beenhanced for the alternative diversity processed fish in Maluku. By that, the value of fish
increase and there will be no more wasted fish into the sea.
WO strategies
WO strategies obtained by minimize the weaknesses in fresh fish marketing in Maluku
to utilize currently opportunities. The strategies are as below.
1) Increasing collaboration with financial institutions in providing business capital2) Increasing programs of fish handling and processing skills3) Increasing function of marketing institutions4) Establish institution that has mandate to stabilize fish price
Capital limitation is faced by most fishermen from time to time and will continue tohappen if there will be no assistance from the Government. Therefore, strategy emerge from

14
APITULEY Yolanda M. T. N. and BAWOLE Dionisius

this condition is to increase cooperation with financial institutions in assisting fishermen
access credits to broaden their business. In connection to fish price fluctuation, an institution
which has mandate to stabilize fish price should be formalized by the Government. Thisinstitution will have similar role and function with National Logistic Agency, to market and tosecure national food as well as to manage the state-owned food commodities.
Fishermen’s skills of fish handling and fish processing should be increased, for thequality of fish can be maintained and able to distribute to consumers who live far from theproducers’ area.
ST strategies
This strategy obtained by maximized strengths in anticipating threats in marketing of
fresh fish in Maluku. Strategies resulted based on analysis as below.
1) Integrated control by involving local community
2) Restriction of imported fish that contained chemical agents
3) Tightening mechanism and function of controlling4) Improving raw material distribution
Illegal, Unreported and Unregulated (IUU) fishing in Maluku causes limited fish
resources for the local fishermen. According to NIKIJULUW (2008), practice of IUU fishingnear the coastal area can disturb local fishery management system. An organized IUU fishingwith modern technology urges fishermen run out from the resources and makes them obtainsmall income.
The rampant practice of IUU fishing is one of the causes which makes Indonesia wasformerly known as the fish export country is now becoming one of the fish import country,
including China, India and Pakistan. Fish are basically imported due to the scarcity of them inthe processing industry. But, the abuse of import permits and lack of coordination ofGovernment surveillance resulted in uncontrolled circulation of imported fish, so they areeasily to distribute in remote areas. Yet the flood of imported fish have been highly
detrimental to fishermen and hit the competitiveness of the national fisheries.
Evaluation of import regulation, data of fish necessity for processing industry and theability of national production to fulfill the need of fishery processing industry as well as
open-close system are strategies performed by the Government to solve the problem (KOMPAS
2011). However, those strategies are still raises pros and cons. To some parties, fish importpolicy is just considered a shortcut way in solving the scarcity of raw material in fishprocessing industry. In fact, the main problem of fish scarcity in processing industry is chaotic
distribution of fish from production centers to the processing places. Therefore, improving
fish distribution by providing production and marketing infrastructures, improving marketing
agencies function, tightening the mechanism and supervision functions should be conducted,
so the life of fishermen will increase.

15
Development of Fresh Fish Marketing in Maluku

WT strategies
This strategy obtained by minimize own weaknesses and anticipate threats, or to facepossible threats from external environment of fresh fish marketing in Maluku. Some strategies
appeared from weaknesses and threats fusions are as below.
1) Improving sea security capacity
2) Prohibiting imported fish contained chemical agents
3) Increasing production and marketing infrastructure4) Tightening sea supervision capacity
Those strategies are presented to overcome some weaknesses such as limited awarenessof fishermen in maintaining fish quality and limited capital of fishermen that lower theirbargaining position in marketing fresh fish. Scattered production area and far from consumers,
malfunction of Fish Auction Place and limited marketing infrastructure can also lead to higher
marketing cost and higher of price fluctuation range in the market.
Another challenge in fresh fish marketing in Maluku is IUU fishing, and unsustainablesea patrol operation which causes irresponsible exploitation of fish resources. If this condition
could not be overcome, the resources perhaps will be endangered and never be known by
future generation.

Conclusion
Strategies to develop fresh fish marketing in Ambon Island are: 1) improving theinfrastructures of production and marketing of fresh fish, 2) integrating the facilities of
production, marketing and processing, 3) improving skills of fisher folks in fish handling andprocessing, 4) increasing cooperation with financial institutions in the provision of venture
capital, 5) improving function of marketing institutions and 6) establishing an agency that has
a mandate to stabilize prices of fisheries products.

References
BRINSON, A., LEE, M. Y. and ROUNTREE, B. 2011. Direct Marketing Strategies: The Rise ofCommunity Supported Fishery Programs. Marine Policy, 35 (4): 542–548.
GALLEGATI, M., GIULIONI, G., KIRMAN, A. and PALESTRINI, A. 2011. What’s That Got to Do
with the Price of Fish? Buyers Behavior on the Ancona Fish Market. Journal of
Economic and Organization, 80 (1): 20–33.
HANAFIAH, A. M. and SAEFUDDIN, A. M. 2006. Tataniaga Hasil Perikanan (Marketing of
Fisheries), 208 pp., Penerbit Universitas Indonesia, Jakarta, Indonesia (in Indonesian).

16
APITULEY Yolanda M. T. N. and BAWOLE Dionisius

KOMPAS (newspaper) 5 December 2011 (Nelayan Terpaksa Membuang Ikan [Fishermen are
Forced to Throw Fish]) (in Indonesian).
NIKIJULUW, V. P. H. 2008. Dimensi Solsial Ekonomi Perikanan Ilegal: Blue Water Crime(Socio Economy Dimension of Illegal Fisheries: Blue Water Crime), 196 pp., PT Pustaka
Cidesindom, Jakarta, Indonesia (in Indonesian).
PURBAYANTO, A. 2011. Perencanaan dan Pengembangan Industri Perikanan Tangkap(Materi Kuliah Tidak Dipublikasikan) (Planning and Developing Capture Fisheries
Industry), 50 pp., Sekolah Pascasarjana, IPB, Bogor, Indonesia (in Indonesian).
RANGKUTI, F. 2002. Analisis SWOT Teknik Membedah Kasus Bisnis (SWOT Analysis
Technique to Scrutinize Business Case), 177 pp., Penerbit PT Gramedia Pustaka Utama,
Jakarta, Indonesia (in Indonesian).
WIDODO, J. and SUADI 2006. Pengelolaan Sumberdaya Perikanan Laut (Fisheries Resources
Management), 252 pp., Gadjah Mada University, Yogyakarta, Indonesia (in Indonesian).

17
南太平洋海域調査研究報告
OCCASIONAL PAPERS

No.58（2017 年 3 月）
No.58（March 2017）

Efforts for Improving the Distribution of Fishery Productsin Toshima, Kagoshima Prefecture
TORII Takashi
Faculty of Fisheries, Kagoshima University

Abstract
The fishing industry in remote islands often has disadvantages in terms of the distribution of products.
Although remote islands enjoy abundant resources in surrounding fishing grounds, they are at a great
disadvantage when it comes to deriving value from such resources. Therefore, fishing businesses in remoteislands generally do not tend to be profitable. Fishery is a key industry for most remote islands. There is apossibility that a decline in fishing activity may weaken the local economy, local communities and themultifaceted functions of the remote island’s fishing activity (e.g., maritime surveillance function andresource management function). Further, maintenance of the fishing industry on remote islands is a greatchallenge for the national economy. In this paper, I will discuss the case of Toshima, a village in
Kagoshima Prefecture, where the distribution of fishery products has been improved through theintroduction of freezing technology. Previously in Toshima, fishery products were shipped fresh using
ferries. However, the ferries run only twice a week and are cancelled in bad weather. Further, ferry
shipment requires a large amount of time and cost in transporting fishery products to the Kagoshima City
Fish Market. In 2011, Toshima introduced state-of-the-art freezing facilities and established a system
wherein a private company would undertake the freezing and selling of fishery products. This has resulted
in reliable shipping and low transportation cost, among other benefits.
Keywords: disadvantages in terms of the distribution, freezing facilities, low transportation cost, reliable
shipping

Purpose of the Study and Challenges
The fishing industry located in remote islands witnesses many disadvantages fromproduction to sales. With respect to production, operating costs are high due to the high costof fuel and fishing materials. Due to their small local markets, remote islands have to rely on
the mainland market and shipping costs to reach such markets are high. Moreover, shipping is
restricted by ferry schedules, and the time taken to reach the mainland market results in the
reduction of freshness of products, thereby reducing their unit prices.

18
TORII Takashi

In this paper, using a case of Nakanoshima Island (one of the islands of Toshima) which
has been making efforts to improve the distribution of fishery products through theintroduction of freezing technology, I will discuss the history of such efforts, the results
achieved so far, and future prospects.

Outline of the Fishing Industry in Toshima
Toshima is a village consisting of the Tokara Islands and has a population of 689 people.
The Toshima Fisheries Cooperative has 33 full-time members of which five members are
full-time fishing operators. Many of the other members are part-time fishing operators
concurrently running accommodation, livestock, recreational fishing boat or other businesses.
The main fishing methods used in Toshima are rod fishing, gillnet fishing and free divefishing. The village has been witnessing an increase in both the annual catch volume andvalue. Compared to the levels in early 2000s, the total catch value increased fourfold and thetotal catch amount increased threefold in 2014 (Fig. 1). These increases were due to theintroduction of freezing facilities in 2011. Previously, shipping to the mainland market had tobe cancelled when lots were not filled owing to the inability to cover shipping expenses. Now,as will hereafter be discussed, Yamaguchi Suisan, the company that manages the new freezing
facilities, purchases even one fish, and because of this, local fishing operators have started
shipping out fish and shellfish that would otherwise have to be consumed by the operatorsthemselves. Seeing this as a new income generating opportunity, some elderly fishing
operators have started operating more often.
Until 1998, all fishery products from the village were shipped to the Federation ofFisheries Cooperative Associations in Kagoshima Prefecture (hereinafter the Federation), a
wholesaler for the prefectural market. However, shipping destinations have become

Fig. 1. Change of fishery in Toshima (Source: Toshima Fisheries Cooperative Association).

19
Efforts for Improving the Distribution of Fishery Products in Toshima, Kagoshima Prefecture

diversified since 1998 and the rate of selling fish through the Federation has dropped to
60–80% since 1999. The introduction of freezing facilities in Takarajima Island in 2011 and in
Nakanoshima and Tairajima islands in 2013 (Yamaguchi Suisan was designated as a manager
for these facilities) prompted many fishing operators to send their catches to Yamaguchi
Suisan, reducing the rate of selling fish through the Federation to slightly over 10% since2013.
Unit shipping prices have been rising since 2011 owing to a slight increase in the unit
prices of fish and shellfish at the Kagoshima City Fish Market since 2011 and an increase in
the available shipping options, among other reasons.

Background on the Efforts to Improve Distribution by Freeze-Shipping
Ferry Toshima, which is used to ship fishery products from Toshima, is operated twice a
week, and the annual in-service rate is between 90% and 93%. Its operation is susceptible tonatural conditions such as typhoons and seasonal winds; therefore, the shipping of fish andshellfish from the village is dependent on natural conditions.
Further, shipping to mainland Kagoshima by ferry is expensive. For example,
transporting 100 kg of fish or shellfish from Toshima to the Kagoshima City Fish Market
costs 89.5 yen per kg. In addition to this cost, shipping commissions of 5% and 5.5% arecharged by the Toshima Fisheries Cooperative and the Kagoshima City Fish Market,
respectively. Due to the high cost of and other restrictions on shipping fish and shellfish, thedevelopment of a distribution system has been a challenge for promoting the fishing industryin Toshima.
In the midst of this, in 2011, the president of the Toshima Fisheries Cooperative at thetime and a member of the village assembly played a key role in examining the approach to
improve the village’s distribution system and deciding on the introduction of freeze-shipping.
It was agreed that Toshima would pay the cost of approximately 30 million yen for the
installation of freezing facilities and Yamaguchi Suisan, as a designated manager, would
manage the freeze-processing business and the selling of processed products.

Freeze-Processing Business of Yamaguchi Suisan
History of Yamaguchi Suisan
Yamaguchi Suisan is a wholesaler of fishery products headquartered in Kagoshima City.
It operates in Miyazaki, Kumamoto and Oita prefectures as well as Kagoshima Prefecture. In
Kagoshima Prefecture, its customers are accommodation businesses and mass retailers. The
company also sells fishery products to mass retailers and accommodation businesses in
Miyazaki and Oita prefectures.

20
TORII Takashi

Business expansion to the Tokara Islands
Background on the launch of the businessIn 2011, Yamaguchi Suisan commenced the freeze-processing business in the Tokara
Islands. In response to the Toshima Village Office’s desire to improve their distribution
system for fish and shellfish harvested around the islands, in October 2011, the Toshima
Village Office, the Toshima Fisheries Cooperative and Yamaguchi Suisan concluded anagreement on the purchase of local fish and shellfish.
First, in 2011, Toshima installed quick-freezing facilities on Takarajima Island. As adesignated manager of the facilities, Yamaguchi Suisan started a business of filleting fish
harvested near the island and quick-freezing them. However, the catch amount on the island
was too small for the capacity of the facilities, which highlighted the need to use the facilities
more effectively.
Then, in 2012, Toshima installed quick-freezing facilities on Nakanoshima Island. The
original plan was that the residents of the island would run the facilities; however, the plan
was cancelled due to the residents’ inexperience in this business and since January 2013,
Yamaguchi Suisan has been running the business as a designated manager. It is involved in
the business of filleting fish harvested near the island, quick-freezing them and transportingthem to Yamaguchi Suisan in Kagoshima City using Ferry Toshima. Mr. Yuhei Yamaguchi
was in charge of the business and was essentially based on the island in 2013 and 2014.
When the business was launched, local fishing operators and local residents were keen to
know the purchasing conditions, hourly wages at the fishery processing plant etc. It was
decided that monthly purchase prices would be set based on the average prices at theKagoshima City Fish Market. Further, it was decided that in principle, the total volumes offish and shellfish would be purchased; however, only shallow water fish and shellfish up to
two days after harvest and other fish and shellfish up to one day after harvest would be
accepted. Other conditions required that the fish caught was properly killed in seawater ice,and blood was removed from yellowfin tuna, skipjack and barracouta. Fish and shellfish thatwere not sufficiently chilled would be purchased at half prices or returned.
It was decided that local women would carry out freeze-processing. Currently, over 10
women are registered for this role and when fish and shellfish come in, the information iscirculated among the registrants and those available to perform the work. The hourly wage
has been set at 700 yen.
Development of the freeze-processing businessApparently, Yamaguchi Suisan experienced many troubles when they launched thebusiness on Nakanoshima Island. Initially, only a small amount of fish and shellfish was
brought in. The islanders portrayed a wait-and-see attitude, doubting the motive of thecompany for starting the business. Most local fishing operators continued to ship their catches
to the Kagoshima City Fish Market, sending only a small amount of fish and shellfish(amount not large enough to fill up lots) to the island’s processing plant. As a result,freeze-processing at the plant often took only one hour.

21
Efforts for Improving the Distribution of Fishery Products in Toshima, Kagoshima Prefecture

In addition, the company had difficulty in handling fish. Once, the company purchased alarge amount of skipjacks but had to discard poor-quality fish stacked low in a ship’s hold.
The company lacked an understanding about the reality of the local fishing operations. They
even had difficulty in filleting fish.
With regard to fish species sellable at retail levels, the company continued to accumulateknowledge through the operation of the processing plant and selling activities. Bycatches
could only be sold for a limited time and quantity due to their small amounts, making it
difficult to incorporate them into the business. On the other hand, species such as Japanese
bluefish, splendid alfonsino and Japanese butterfish were selling well, prompting thecompany to consider increasing the transaction volumes of such fish.
Some local fishing operators misinterpreted “total volume purchase” for Yamaguchi
Suisan purchasing fish and shellfish of any quality. Occasionally, fish and shellfish that were
improperly treated or harvested several days ago were brought in. The company had to
explain to such operators the intentions of the business and asked them to carry out thoroughfreshness control.
Through these efforts, Yamaguchi Suisan gradually won the trust of the islanders andlocal fishing operators. From the summer six months after the launch of the business, anincreasing number of fish and shellfish started to be brought in. It appears that the benefits ofusing the processing plant in comparison to directly shipping to the market, e.g., saving oftransportation and ice costs, time and effort, were finally understood by the operators.
As the business picked up, the company started receiving requests from clients. Local
fishing operators wanted the processing plant to operate whenever they went fishing,including during the Bon period, indicating that the local operators regarded Yamaguchi
Suisan as an important buyer. With regard to purchase prices, some operators requested that
their products be purchased at higher than average market prices. When market prices
remained high, some operators expressed dissatisfaction with the purchase prices set by thecompany. Yamaguchi Suisan has adhered to the policy of offering average market prices toclients and letting them decide whether they want to sell their catches to the company.
Results of the efforts for improving distribution, future prospect
It has been five years since Yamaguchi Suisan’s business in Toshima gained momentum,
and local fishing operators have expressed merits of engaging with the business, including the“avoidance of shipping expenses,” “saving of time and effort,” “ability to sell from small lots”
and “stable purchase prices.” The introduction of the freeze-processing plants has allowed
local fishing operators to operate regardless of the ferry schedule. Another change observed isthat the associate members of the local fisheries cooperative, many of whom harvest fish andshellfish for self-consumption, have started using the processing plants. In the past, when they
had a good catch, they tended to give away excess fish and shellfish to people on the island
because such excess fish and shellfish were not enough to fill lots for shipping. Yamaguchi
Suisan, which purchases even one fish from operators provided it is fresh, now functions as abuyer for such fishing operators.

22
TORII Takashi

As a result, catches in the district managed by the Toshima Fisheries Cooperative haveincreased, and the business of Yamaguchi Suisan has grown and now handles a quarter to
one-third of the total fish and shellfish yield in the area. On the other hand, the need tostrengthen the sales force of Yamaguchi Suisan has emerged.

Conclusion
In this paper, I discussed the effects of the freeze-processing business run by Yamaguchi
Suisan and its future prospects. The introduction of freeze-processing plants created a new
distribution route not restricted by the ferry schedule, giving local fishing operators anothershipping option. Local fishing operators can now determine the buyer of their fish andshellfish considering market prices, catches, transportation cost, time/effort required etc.
Because of the eased shipping-related restrictions, some fishing operators have started
going fishing more frequently. In addition, fishing operators who would not send their catches
to the market because they could not fill lots are now able to sell their products. As a result,since 2011, both the catch amounts and values handled by the Toshima Fisheries Cooperative
have increased, indicating that the installation of the freezing facilities to promote the local
fishing industry and the efforts made by designated manager Yamaguchi Suisan haveproduced a certain level of benefits.
The most significant reason that the development of a distribution system in Toshima haspromoted the local fishery production is the involvement of a private company with a strong
sales force. It may be true that fishing operators or the staff of a fishery cooperative would be
able to produce frozen products if freezing facilities are available and the necessary skills aremastered by them. However, simply freezing fish and shellfish do not make them products ofvalue. Only with the involvement of a company with the required experience and knowledge
on product creation and selling does frozen fish become a product in the true sense. Throughthe collaboration of suppliers (local fishing operators), a private company handling production
and selling (Yamaguchi Suisan) and a government that has been providing the necessary
facilities (Toshima), the results reported in this paper have been achieved.

P.S.
I hope that this paper assists Indonesia’s Maluku Province, which faces similar problems,in developing policies for improving their distribution system.

Acknowledgement
This work was supported by JSPS KAKENHI Grant Number JP15K07614.

23
南太平洋海域調査研究報告
OCCASIONAL PAPERS

No.58（2017 年 3 月）
No.58（March 2017）

The Diversity of Grouper (Epinephelinae)
in Ambon Island, Maluku, Indonesia
LIMMON Gino V.1, 2, RIJOLY Frederik1, 2, KHOUW Abraham S.1, 2, MANUPUTTY Gratia D.1, 2 andPATTIKAWA Jesaya A.1, 2
1: Maritime and Marine Science Center of Excellence, Pattimura University
2: Faculty of Fisheries and Marine Science, Pattimura University

Abstract
Located in the heart of world’s coral triangle, Maluku seas were estimated to harbor around 1,500
species of fish, which make Maluku seas one of the highest in fish diversity. However, the data to support
this claim is not yet available. In this report, we focused our research on the diversity of grouper (family
Serranidae, subfamily Epinephelinae) that have the highest economic value and usually exported to various
countries around the world. Our preliminary research on diversity of groupers landed at fish market around
Ambon Island showed astonishing result. We identified 36 species of groupers that belong to 9 genera.
Importantly, two of the species Epinephelus ergastularius Whitley 1930 and Saloptia powelli Smith 1964
were never reported to be found in Indonesia and can be potentially be declared as a new record.
Furthermore, there is one species Cephalopholis igarashiensis Katayama 1957 that has been found in North
Sulawesi but never reported to be found in Maluku waters. The mitochondrial DNA of the above mentioned
species are being sequenced and will be reported in a separated report. Our results will have a great
contribution in building a new database on the diversity of fish in Maluku and will provide new information
to revise the geographical distribution of groupers.
Keywords: coral fish, fisheries, geographical distribution, management, Serranidae

Introduction
Epinephelinae is Subfamily of Serranidae, a large family of fishes from Order
Perciformes that comprises about 450 species in 65 genera. They are recognized as groupers.
Fishes belong to this group have considerable high economic value. Groupers are among themost marketable group of tropical marine fish. They have high prices at markets andconsequently become the main target in fisheries industry (BEETS and HIXON 1994, MORRIS etal. 2000, RANDALL 1987, SLUKA and REICHENBACH 1996). The taste and high market value
are some of the reasons that cause this group becoming the most important mariculturecommodity in Asia and around the world (CHIU et al. 2008, JEFRI et al. 2015).

24
LIMMON Gino V., RIJOLY Frederik, KHOUW Abraham S., MANUPUTTY Gratia D. and PATTIKAWA Jesaya A.

The subfamily Epinephelinae has approximately 159 species in 15 genera (HEEMSTRA
and RANDALL 1993, MORRIS et al. 2000). The group populates a wide range of habitats andexhibits a wide variety of reproductive and growth strategies (JOHANNES 1978, MORRIS et al.
2000, SHAPIRO 1987). Some species have a home range larger than 1.8 ha and can migrate ina distance up to 2 km (SAMOILYS 1987, SAMOILYS et al. 1997, UNSWORTH et al. 2007).
Groupers play key function in structuring coral reef communities due to its role as top
predatory fish feeding on fish. A thriving and productive reef community is indicated by alarge grouper population. However, the population is intensely exploited (BOHNSACK 1994,
CHIAPPONE et al. 2000, COSTA et al. 2003, UNSWORTH et al. 2007). Currently, some species ofgroupers such as Giant Grouper (Epinephelus lanceolatus), Mouse Grouper (Cromileptes
altivelis) and Brown Marbled Grouper (Epinephelus fuscoguttatus) are listed as vulnerable,
threatened and near-threatened, respectively, based on the Red Data listed by IUCN(RODRIGUES et al. 2010). Some researches have been conducted to explore the biodiversity ofgroupers around the world. HEEMSTRA et al. (2002), for example, describes groupers in
Atlantic Sea. The result is quite comprehensive, comprises diagnostic character, size, habitat,
biology, fisheries, distribution, remarks and key identification to species level. On the other
hand, other researches concerning phylogenetic relationship that are still poorly understood
due to the high variety of taxa that must be considered. Information about the relationships
among the Serranidae has been equally limited (CRAIG and HASTINGS 2007, JEFRI et al.
2015).
Evaluation of genetic diversity and phylogeny using modern molecular biology
techniques has enabled comparisons between nucleotide and amino acid sequences ofdifferent populations. Studies in fish taxonomy using DNA markers have been developed byfor example RODRIGUES et al. (2010) that utilized microsatellite markers for the identificationof some groupers including E. lanceolatus, C. altivelis and E. fuscoguttatus. Recently, the useof molecular phylogenetic approach has been widely accomplished by the newly developed
DNA barcoding method. However, identification of fish species based on morphological trait
still play important role and irreplaceable especially when the access to sophisticatedmolecular biology equipment is limited.

Materials and Methods
This research was conducted from April to November 2016 in Ambon Island, Maluku,
Indonesia. Coral reef fish were collected at fish markets around Ambon Island (Fig. 1). Three
to five specimens from each species were bought and kept in the cool box filled with ice tomaintain the integrity of DNA. To avoid redundancy in sampling, list of species collected
were developed following each sampling activity. The sellers were interviewed to collect data

25
The Diversity of Grouper (Epinephelinae) in Ambon Island, Maluku, Indonesia

for biogeography distribution. Samples from other islands were separated. Samples were thenbrought to marine ecology laboratory, at Maritime and Marine Science Center of Excellence,
Pattimura University. Each specimen was measured, tagged, then laid on styrofoam. The finswere spread with nail and arranged for photograph. The tissue samples were then collected
and stored in 95% ethanol for DNA extraction. The reef fish found were identified to thespecies level based on ALLEN (2000), KUITER and TONOZUKA (2001), ALLEN et al. (2003),
KUITER and DEBELIUS (2006) and ALLEN and ERDMANN (2012). Samples were then stored in
4% formalin for long term storage.

Results and Discussion
It is widely known that landings of marine fishes in the markets are not similar but
depended on natural abundance, consumer preference, geography, history and ease of catch.
Consequently, in areas surrounded by coral reef ecosystems, high diversity of species isharvested with various fishing techniques. Usually fish landed in the fish markets of theseareas including snappers (Lutjanidae), surgeonfishes and unicornfishes (Acanthuridae),parrotfishes (Labridae), emperor breams (Lethrinidae) and groupers (Epinephelinae) (GARCIA
and ROSENBERG 2010, SALAS et al. 2007). Among them, groupers are known to be heavily
exploited, because they have the highest market price (CHIAPPONE et al. 2000, SADOVY 1994).
The consequence of dropping grouper fisheries sometimes devastated for many coastal
communities and ecosystems especially for those that depend solely on fisheries.

Fig. 1. Map of fish markets in Ambon Island.

26
LIMMON Gino V., RIJOLY Frederik, KHOUW Abraham S., MANUPUTTY Gratia D. and PATTIKAWA Jesaya A.

Strikingly, despite the reports of decreasing groupers population in Indonesia, we found
36 species of groupers (Epinephelinae) that belong to 9 genera during the study in fish
markets of Ambon Island (Table 1). The diversity of groupers found in our study is higher thatfound in similar studies conducted by RHODES and TUPPER (2007) that found 24 species ofgroupers in fish markets of Pohnpei, Micronesia and ALCANTARA and YAMBOT (2016) that
identified 27 species of groupers from major fish landing sites and markets in the Philippines.
Interestingly, two of the species found in Ambon fish markets Epinephelus ergastularius
Whitley 1930 and Saloptia powelli Smith 1964 were never reported to be found in Indonesia
and can be potentially declared as a new record. Epinephelus ergastularius Whitley 1930 isalso known as sevenbar grouper that usually inhabits deep rocky reefs. The original name ofthis species was recently changed to Hyporthodus ergastularius (CRAIG and HASTINGS 2007,
SMITH and CRAIG 2007). This species was previously reported to be found only in Southwest
Pacific and the Eastern coast of Australia. Saloptia powelli Smith 1964 with common namegolden grouper was reported to be found in Pacific Ocean, Western Pacific and French
Polynesia. This species has been found in Taiwan, Okinawa (Japan), the Mariana Islands, theSociety Islands, American Samoa, Samoa, the Cook Islands, Federated States of Micronesia,
French Polynesia, Fiji, Kiribati, New Caledonia, Niue, Palau, Papua New Guinea, the Solomon
Islands, South China Sea, Tokelau, Tonga, Tuvalu, the Tuamotu Islands and Vanuatu(HEEMSTRA and RANDALL 1993). This species is widely known to inhabit deep rocky reefs.

Table 1. Groupers found at fish markets in Ambon Island.

No. FamilySpecies
1 Serranidae Aethaloperca rogaa
2 Serranidae Anyperodon leucogrammicus

No. Family
19 Serranidae
20 Serranidae

Species
Epinephelus coralicola
Epinephelus cyanopodus

3
45

Serranidae Cephalopholis argus
Serranidae Cephalopholis aurantia
Serranidae Cephalopholis boenak

21 Serranidae
22 Serranidae
23 Serranidae

Epinephelus epistictus
Epinephelus ergastularius
Epinephelus fasciatus

6
7
8
9

Serranidae
Serranidae
Serranidae
Serranidae

Cephalopholis cyanostigma
Cephalopholis igarashiensis
Cephalopholis miniata
Cephalopholis nigripinis

24
25
26
27

Serranidae
Serranidae
Serranidae
Serranidae

Epinephelus faveatus
Epinephelus maculatus
Epinephelus melanostigma
Epinephelus merra

10
11
12
13

Serranidae
Serranidae
Serranidae
Serranidae

Cephalopholis polleni
Cephalopholis sexmaculata
Cephalopholis spiloparaea
Cephalopholis urodeta

28
29
30
31

Serranidae
Serranidae
Serranidae
Serranidae

Epinephelus ongus
Epinephelus quoyanus
Epinephelus spilotoceps
Gracila albomarginata

14 Serranidae Epinephelus amblycephalus
15 Serranidae Epinephelus areolatus
16 Serranidae Epinephelus bilobatus

32 Serranidae
33 Serranidae
34 Serranidae

Liopropoma lemniscatum
Pogonoperca punctata
Saloptia powelli

17 Serranidae Epinephelus caeruleopunctatus
18 Serranidae Epinephelus coioides

35 Serranidae
36 Serranidae

Variola albimarginata
Variola louti

27
The Diversity of Grouper (Epinephelinae) in Ambon Island, Maluku, Indonesia

Furthermore, there is one species Cephalopholis igarashiensis Katayama 1957 that has beenfound in North Sulawesi waters but never reported to be found in Maluku waters. Previously,
this species has been reported to be found in Tropical Western Pacific, Southern Japan, Taiwan,
Guam, Philippines, South China Sea, Samoa and Tahiti (PERISTIWADY et. al. 2009). Our results
will have a great contribution in building a new database on the diversity of fish in Maluku
and will provide new information to revise the geographical distribution of groupers.
Given that fishing pressure is the major driver of population declines in most threatenedgrouper species, it must be addressed to move towards their recovery. Grouper management
has been attempted in various ways, ranging from minimum size limits to protect juvenile fish,
recreational bag limits and commercial fishing quotas, gear and seasonal controls, marine
protected areas, to limited entry fisheries and slot sizes. Moreover, the establishment of
no-take-area (NTA) has been shown to be effective management strategy to increase thepopulation and help maintain and increase the grouper stocks.

Acknowledgement
We would like to thank Ministry of Research Technology and Higher Education andPattimura University for funding this research through UPT Research Grant from DIPARISTEKDIKTI (2016).

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南太平洋海域調査研究報告
OCCASIONAL PAPERS

No.58（2017 年 3 月）
No.58（March 2017）

Species Diversity of Hexacorallia
around the Satsunan Islands, Japan
FUJII Takuma
Research Center for the Pacific Islands, Kagoshima University

Abstract
The Satsunan Islands, in the middle to the north of the Ryukyu Islands, Japan, are located in an
important location for biogeography, as there is a shift of marine fauna in this region from subtropical totemperate. However, few have studied about marine biodiversity of this region for many taxa, withexceptions such as fishes. In this report, the biogeographic relations between the Coral Triangle region ofhighest marine diversity, and the Satsunan Islands, using previous reports related to species diversity of
subclass Hexacorallia are reviewed. In the near future, it is strongly needed to more clearly reveal the
species diversity of order Hexacorallia within the Satsunan Islands, a region of ecological variety, based on
thorough and taxonomical surveys.
Keywords: biogeography, ecological variety, ecozone, Scleractinia, Zoantharia

Suborder Hexacorallia
Class Anthozoa, currently consisting of 3 subclasses; Hexacorallia, Octocorallia andCeriantharia, is characterized by a lack of the medusa stage in their life cycles. Anthozoans
are common organisms that are widely distributed in various marine environments fromshallow to deep, from the equator to the polar region. The phylogenetic relationships within
Anthozoa are not yet resolved. Compared to the other two suborders, inter-order level
phylogeny within the subclass Hexacorallia is still under revision (DALY et al. 2007, STAMPAR
et al. 2014). Octocorallia is characterized by eight plumate tentacles and eight complete
mesenteries inside the body cavity. Ceriantharia, recently promoted to subclass from an order
within subclass Hexacorallia, is characterized by a nest tube formed utilizing a specialized
nematocyst, and unpaired, coupled mesenteries in the body cavity. In contrast to the twoeasily definable subclasses, Hexacorallia is a less coherent taxon. The morphological andecological features within the subclass are very varied compared to the other subclasses. The
synapomorphys of hexacorallians are considered to be the appearance of spirocysts, a type ofnematocyst, and the first six mesenteries in the development of polyps.

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FUJII Takuma

Currently, subclass Hexacorallia consists of five orders; Scleractinia, Corallimorpharia,
Actiniaria, Zoantharia and Antipatharia. It has been estimated that there are around 4,000
species contained within this subclass in a previous study (DOUMENC and VAN PRAET 1987).
However, as well as the other marine invertebrates, the development of the analyticaltechniques have provided more and more discoveries of new taxa (e.g., studies for order
Zoantharia: REIMER and FUJII 2017), and reconstructions of taxonomy have been performed(e.g., studies for order Scleractinia: FUKAMI et al. 2008, KITAHARA et al. 2010). In the orders
Corallimorpharia, Actiniaria and Antipatharia, the accumulation of basal knowledge of
species diversity is still required.

The Coral Triangle and the Satsunan Islands
The “Coral Triangle”, an area of Southeast Asia between Malaysia, the Philippines,
Indonesia and Papua New Guinea, is considered to be the center of the coral reef region, andthe center of maximum marine biodiversity. Recently, the global patterns of biodiversity withvarious parameters such as species richness, uniqueness, or threats for major marineorganisms have been discussed and analyzed for this region. However, further basal studies
are required to properly estimate detailed biogeographical patterns. Most previous studies
were focused on only major taxa, such as fish, snails, zooxanthellate corals, or lobsters, andthe information on the border areas of the Coral Triangle is seriously deficient (e.g.,
HOEKSEMA 2007, ROBERTS et al. 2002).
The Ryukyu Islands are at the northern edge of the Coral Triangle, and are considered as
one of the highest centers of marine bio-endemism (ROBERTS et al. 2002). Moreover, theSatsunan Islands are an important area to study the gradient of marine biodiversity fromsubtropical to temperate zones following the Kuroshio Current. The Ryukyu Islands are thesouthern chain of islands in Japan, from the east side of Taiwan to the Osumi Islands, andspans from the subtropical to temperate zone. The Ryukyu Islands, or even the Nansei Islands,
span over two prefectures, Okinawa and Kagoshima. The northern part is called the Satsunan
Islands of Kagoshima Prefecture (TOYAMA 2009). From a biogeographical point of view, theSatsunan Islands extend into two regions as well; the Palearctic and Indomalaya ecozones.
The border between these two ecozones, designated as Watase line, is crossed on Tokara Strait
where is between Kodakarajima Island and Akusekijima Island. The border of thebiogeographical ecozones was decided based on the terrestrial organisms, and it’s still
doubtfully if it can be applied to the marine benthic fauna. For example, the northernmost
coral reef region is considered to be around Tanegashima Island (approx. N30° 21’ to N 30°51’), where in the areas where the average sea surface temperature of the coldest month isgreater than 18°C (YAMANO 2009). Either way, the Satsunan Islands possibly having high33
Species Diversity of Hexacorallia around the Satsunan Islands, Japan

marine biodiversity from ecological, species to genetic levels. Previously some faunal reportson the major taxa of marine organisms were published only on some part of the islands (e.g.,
fish: MOTOMURA 2016).

Faunal Reports on Subclass Hexacorallia from the Satsunan Islands
The order Scleractinia, generally called stony corals, is one of the key taxa in the coral
reef region. More than half of the approximately 1,400 species of this order are symbiotic
with photosynthetic brown algae and known as reef-building corals or zooxanthellate corals(CAIRNS 1999). Zooxanthellate corals have important ecological roles in shallow warm waters
as the primary producers and constructing complex physiological structures on the sea floor
that providing various spaces to live for other organisms. Because not only of their ecologicalbut also of the economic importance, recently the scleractinian species have become to bemuch studied regarding their species diversity for ecological monitoring, particularly by local
administrative agencies and civilian organizations (see THE JAPANESE CORAL REEF SOCIETY
and MINISTRY OF THE ENVIRONMENT 2004). Unfortunately, it is often difficult to access todetails of such reports and to recognize if the surveys were carried out scientifically or not.
A field guidebook edited by VERON (2000) may be the most widely used material toidentify zooxanthellate corals in recent years, and currently a beta version of the associatedweb database has been updated (VERON et al. 2016). Based on this database (2016), 369
species of zooxanthellate scleractinian corals have been listed in “Ryukyu Islands North”
region (=from Okinawajima Island and the Kerama Islands to the Tokara Islands), and 218
species in the “Kyushu South-east” region (=from the Osumi Islands to the Koshiki Islands,
southern Kyushu Island and east coast of Kyushu Island). However, these list contain someuncertain information as the distribution was reported based either or both on specimens or insitu photographs clearly identified combined with possibly distributed species in which the
distribution was estimated but currently no records exist. Thus, although there are no doubtsthat this field guide and database are valuable in the preliminary identification and estimationof biogeographical patterns, these data should treat carefully and with caveats for scientificstudies.
Within the Satsunan Islands, SUGIHARA et al. (2015) reported 161 species ofzooxanthellate scleractinian corals from Tanegashima Island in the Osumi Islands. Although
this work is an open access electronic field guide book and there is an absence of descriptionsof voucher specimens, it can be considered to be a valuable distributional report as themethodology of identification and the traceability of the taxonomy were clarified. YABE andSUGIYAMA (1935) and SUGIYAMA (1937) reported 63 zooxanthellate scleractinian corals
species from the Amami Islands and UTINOMI (1956) reported 15 species from the Tokara

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FUJII Takuma

Islands based on vouchered specimens in public museums. However, these older reports were
simply the results of elementary surveys in each reports, and asides from the TanegashimaIsland data, these reports are too old to be treated as information on the current species
diversity around the Satsunan Islands region. Thus, there is an overall lack of basal
information on coral species diversity in the Satsunan Islands.
The Zoantharia is the other hexacorallian order in which recently the studies on species
diversity have been advanced as much as the order Scleractinia. This order, often calledcolonial sea anemones or sand-encrusting sea anemones, is characterized by a specialized
bilateral mesenterial arrangement. This order is as large as Scleractinia, consisting of around
300 species, and the fact that almost all the species have no hard tissues such as a skeleton orsclerites had limited the progress of taxonomy in the past. However, molecular techniques
have helped to sort out the taxonomy and advanced biogeographical research. Previously, 13
zoantharian species were recorded from the Satsunan Islands region based on voucher
specimens or the descriptions of in situ observation, with 9 zooxanthellate species and 4
azooxanthellate species (see REIMER and FUJII 2017). Zooxanthellate zoantharians are
considered to occupy a similar niche with zooxanthellate corals and assuming the ecologicalrole as the primarily producer in the coral reef ecosystems, although they have no skeletal
tissues to construct the new structures on the sea floor. ONO et al. (2008) revealed the
distribution patterns of 9 zooxanthellate zoantharian species in the Satsunan Islands, showing
decreasing species richness from south to north.
The other hexacorallian orders; Corallimorpharia, Actiniaria and Antipatharia, have beenstudied little regarding the species diversity around the Ryukyu Islands region. There is no
doubt that these orders also have high species diversity around not only the Satsunan Islands
but also in the whole Ryukyu Islands, as there are many photographs on field guides (e.g.,
SHIRAI 1977, UCHIDA and SOYAMA 2001). The preliminary results of this author’s informal
survey suggest the distribution of 7 species including 2 previously unrecorded species ofzoantharias around Takarajima Island, the Tokara Islands (FUJII 2016). Thus, it is easy toestimate that the species diversity of Hexacorallia is higher than has been previously reported
within this region, particularly given that Takarajima Island is a comparatively small islandand the eco-habitats for hexacorallian species are less varied within the Satsunan Islands.
In the near future, it will be strongly required to more clearly reveal the species diversityof order Hexacorallia not only within the Coral Triangle, the region of highest marine
biodiversity, but also within the Satsunan Islands, a region of ecological variety, to report
representatively based on the thorough field and taxonomic surveys utilizing identification
with voucher specimens.

35
Species Diversity of Hexacorallia around the Satsunan Islands, Japan

References
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1–46.
DALY, M., BRUGLER, M. R., CARTWRIGHT, P., COLLINS, A. G., DAWSON, M. N., FAUTIN, D. G.,
FRANCE, S. C., MCFADDEN, C. S., OPRESKO, D. M., RODRIGUEZ, E., ROMANO, S. L. and
STAKE, J. L. 2007. The Phylum Cnidaria: A Review of Phylogenetic Patterns andDiversity 300 Years after Linnaeus. Zootaxa, 1668: 127–182.
DOUMENC, D. A. and VAN PRAET, M. 1987. Ordre des Actiniaires, ordre desPtyochodactiares, Ordre des Corallimorphares (Order Actiniaria, Order Ptychodactira
and Order Corallimorpharia). In: Traite de Zoologie, Tome III, Fasicule 3, Cnidaries
Anthozoaires (Treaty of Zoology, Volume III, Fasicule 3, Cnidarians Anthozoans) (Ed.
GRASSE, P. P.), 257–401, Masson, Paris, France (in French).
FUJII, T. 2016. Satsunan Shotou ni okeru Sunaginchakumoku oyobi Isoginchakumoku no
Tayousei (Preliminary Report of Diversity of Orders Zoantharia and Actiniaria in theSatsunan Islands, Kagoshima). Occasional Papers (Kagoshima University ResearchCenter for the Pacific Islands), 57: 87–88 (in Japanese).
FUKAMI, H., CHEN, C. A., BUDD, A. F., COLLINS, A., WALLACE, C., CHUANG, Y., CHEN, C.,
DAI, C., IWAO, K., SHEPPARD, C. and KNOWLTON, N. 2008. Mitochondrial Nuclear Genes
Suggest that Stony Corals Are Monophyletic but Most Families of Stony Corals Are Not(Order Scleractinia, Class Anthozoa, Phylum Cnidaria). PLoS One, 3: e3222.
HOEKSEMA, B. W. 2007. Delineation of the Indo-Malayan Centre of Maximum Marine
Biodiversity: The Coral Triangle. In: Biogeography, Time and Place: Distributions,
Barriers, and Islands (Ed. RENEMA, W.), 117–178, Springer, Amsterdam, Netherlands.
KITAHARA, M. V., CAIRNS, S. D., STOLARSKI, J., BLAIR, D. and MILLER, D. J. A. 2010.
Comprehensive Phylogenetic Analysis of the Scleractinia (Cnidaria, Anthozoa) Based on
Mitochondrial CO1 Sequence Data. PLoS One, 5: 1–9.
MOTOMURA, H. 2016. The Ichthyofauna of Yoron-Jima Island in the Southern Extremity of
the Amami Islands, Japan, Including Comparisons with Similar Nearby Regions. In: The
Amami Islands: Culture, Society, Industry and Nature (Eds. KAWAI, K., TERADA, R. and
KUWAHARA, S.), 71–78, Hokuto Shobo Publishing, Tokyo.
ONO, S., REIMER, J. D. and TSUKAHARA, J. 2008. Ecological Survey of Zooxanthellate
Zoanthid Diversity (Hexacorallia: Zoantharia) from Kagoshima, Japan. Kuroshio
Biosphere, 4: 9–24.
REIMER, J. D. and FUJII, T. 2017. Zoantharia (Cnidaria: Anthozoa: Hexacorallia) Diversity
Research in Japan: Current State and Future Trends. In: Species Diversity of Animals inJapan (Eds. MOTOKAWA, M. and KAJIHARA, H.), 383–399, Springer Japan, Tokyo, Japan.

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ROBERTS, C. M., MCCLEAN, C. J., VERON, J. E., HAWKINS, J. P., ALLEN, G. R., MCALLISTER,
D. E., MITTERMEIER, C. G., SCHUELER, F. W., SPALDING, M., WELLS, F., VYNNE, C. and
WERNER, T. B. 2002. Marine Biodiversity Hotspots and Conservation Priorities for
Tropical Reefs. Science, 295: 1280–1284.
SHIRAI, S. 1977. Genshoku Okinawa Kaichuu Doubutsu Seitai Zukan (Underwater Animal
Ecology of Okinawa), 636 pp., Shinsei Tosho, Okinawa, Japan (in Japanese).
STAMPAR, S. N., MARONNA, M. M., KITAHARA, M. V., REIMER, J. D. and MORANDINI, A. C.
2014. Fast-Evolving Mitochondrial DNA in Ceriantharia: A Reflection of Hexacorallia
Paraphyly? PLoS One, 9: e86612.
SUGIHARA, K., NOMURA, K., YOKOCHI, H., SHIMOIKE, K., KAJIWARA, K., SUZUKI, G., ZAYASU,
Y., DEWA, N., FUKAMI, H., KITANO, Y. F., MATSUMOTO, H., MEZAKI, T., NAGATA, S.,
TACHIKAWA, H. and KIMURA, T. 2015. Nihon no Yusousei Ishisangorui Tanegashimahen(Zooxanthellate Scleractinian Corals of Tanegashima Island, Japan), 197 pp., Center for
Environmental Biology and Ecosystem Studies, National Institute for Environmental
Studies, Ibaraki, Japan (in Japanese).
SUGIYAMA, T. 1937. Honpou Engan Sangen Zoushou Sango ni tsukite (On the Recent Reef
Corals Occurring in the Coast of Japan), 60 pp., Contribution of Institute of Geology andPaleontology, Tohoku University, Sendai, Japan (in Japanese).
THE JAPANESE CORAL REEF SOCIETY and MINISTRY OF THE ENVIRONMENT 2004. Coral Reefs
of Japan, 358 pp., Ministry of the Environment, Tokyo, Japan.
TOYAMA, M. 2009. Ryuukyuu Rettou no Meishou ni Kansuru Memo (A Note on the Names of
the Ryukyu Islands). Bulletin of the Historiographical Institute, 37: 59–68 (in Japanese).
UCHIDA, H. and SOYAMA, I. 2001. Isoginchaku Gaido Bukku (Sea Anemones in Japanese
Waters), 157 pp., Hankyu Communications, Tokyo, Japan (in Japanese).
UTINOMI, H. 1956. Invertebrate Fauna of the Intertidal Zone of the Tokara Islands XIV. Stony
Corals and Hydrocorals. Publications of the Seto Marine Biological Laboratory, 5:339–346.
VERON, J. E. N. 2000. Corals of the World, 3 Volumes, 1381 pp., Australian Institute ofMarine Science, Townsville, Australia.
VERON, J. E. N., STAFFORD-SMITH, M. G., TURAK, E. and DE VANTIER, L. M. 2016. Corals of
the World, version 0.01 (Beta). Retrieved 20 November, 2016, fromhttp://coralsoftheworld.org.
YABE, H. and SUGIYAMA, T. 1935. Geological and Geographical Distribution of Reef-Corals
in Japan. Journal of Paleontology, 9: 183–217.
YAMANO, H. 2009. Nihon ni okeru Sangoshou no Bunpu (Distribution of Coral Reefs inJapan). Bulletin on Coastal Oceanography, 46: 3–9 (in Japanese).

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南太平洋海域調査研究報告
OCCASIONAL PAPERS

No.58（2017 年 3 月）
No.58（March 2017）

Identification and Inventory of Coastal and Small Islands
Conservation Area in the Lease Islands, Maluku Province
ABRAHAMSZ James1, AYAL Frederik W.1, LOPULALAN Yoisye1 and MAKAILIPESSY Marvin M.2
1: Fisheries and Marine Science Faculty, Pattimura University
2: Polytechnic of Fisheries, Tual

Abstract
Maluku Province is targeting 1,000,000 ha of coastal and small island conservation areas until 2019.
For that reason, this study was conducted to identify and to inventory the conservation area in the Lease
Islands region as part of the Cluster VII island of Maluku. The conservation areas in this region werecategorized into three namely conservation of coastal and small islands, maritime conservation area andmarine waters conservation area. The most suitable conservation area among those three classifications wasdetermined based on score system and value-weighted score for three main criteria, i.e., ecological, socialand economic which consist of 20 parameters. The results indicated a potential conservation area on the
Island Cluster VII, i.e., on the Lease Islands region with an area of 81,573.48 ha. Conservation of coastaland small islands have the highest score and become the selected category with a score-weighting of 1.15,
higher than the other two categories. The type of conservation area is set to become Small Island Park anddesignated by the name of Small Island Park of the Lease Islands.
Keywords: category, conservation policies, islands cluster, score-weight

Introduction
Until 2020, there is targeted Marine, Coastal and Small Islands Conservation Area of
20,000,000 ha in Indonesia. This target is to answer the mandate of Indonesia Republic Law
No. 27 of 2007 as amended by Law No. 1 of 2014. This law defines conservation as theprotection, preservation and utilization of Coastal Areas and Small Islands and the ecosystem
to ensure the existence, availability and continuity of resources while maintaining andimproving the quality of the value and diversity.
Conservation Areas according to the Regulation of the Indonesia Minister of Marine andFisheries No. 17 of 2008 is part of coastal areas and small islands that have certain
characteristics as a whole ecosystems are protected, preserved and/or utilized in a sustainable
manner to realize the management of coastal areas and small islands sustainably.

38
ABRAHAMSZ James, AYAL Frederik W., LOPULALAN Yoisye and MAKAILIPESSY Marvin M.

Conservation of coastal areas and small islands is held: 1) to preserve coastal and small island
ecosystems, 2) to protect migration of fish and other marine life, 3) to protect the habitat formarine life and 4) to protect the traditional culture.
To support the policy of the Indonesian Government, the Government of Maluku
Province took the initiative to develop a Conservation Area of Marine, Coastal and Small
Islands on the entire island cluster as the unit of planning area. Maluku Government expects
up to 2019 there were 1,000,000 ha of conservation area. In the province there are 12 islandclusters, and 8 island clusters already have a conservation area.
In 2015, the Department of Marine and Fisheries Maluku Province collaborated with the
Research Center for Small Islands, Coastal and Outermost Islands of Pattimura University, todetermine the potential of protected areas at the Islands Cluster VII (including Ambon Islandand the Lease Islands) which has not had conservation area. This study aims to identify andinventory the conservation areas of marine, coastal and small islands waters.

MethodThis study was conducted on the Lease Islands as a part of the Islands Cluster VII of
Maluku. The study was conducted from September to December in 2015.
The method includes 20 parameters according to Supplement 1, Guide to Identification,
Inventory and Reservation of Marine, Coastal and Small Islands Conservation Area (LUBIS etal. 2014). Twenty of these parameters are clustered in three criteria. First, an ecologicalcriterion includes 10 parameters: 1) biodiversity of mangrove, seagrass and coral reefs, 2)
originality, 3) the ecological connectivity, 4) representation, 5) uniqueness (distribution offlora, fauna and ecosystems), 6) productivity (biomass, kg/ha), 7) migration area, 8) habitat ofendangered, endemic and protected fishes, 9) spawning ground and 10) nursery ground.
Second, a social criterion includes 6 parameters: 11) community support, 12) conflicts ofinterest potential, 13) threats potential, 14) the potential of maritime history, 15) local wisdomand 16) customs.
Third, an economic criterion includes 4 parameters: 17) the importance value of fisheries,18) the potential for recreation and tourism, 19) aesthetics and 20) access to location.
The category of conservation area, such as conservation of coastal and small islands,
maritime conservation and marine conservation, was determined by using the scoring systemand the value of score-weighted. The type of conservation areas was chosen by using
comprehensive study approach.

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Identification and Inventory of Coastal and Small Islands Conservation Area in the Lease Islands, Maluku Province

Results and Discussion
General condition
The identification results show that a conservation area candidate has an area of
81,573.48 ha, of which 70.11% is marine water and 29.89% are land. The area has six border
points: 1) 128o29’59,08” E and 3o29’56,24” S, 2) 128o35’18,80” E and 3o28’19,61” S, 3)
128o45’3,97” E and 3o28’48,76” S, 4) 128o52’2,91” E and 3o29’52,48” S, 5) 128o48’2,59” Eand 3o44’2,90” S and 6) 128o30’59,10” E and 3o39’11,88” S, covering most of Haruku,
Saparua, Molana, Nusalaut islands and adjacent waters (Fig. 1).
Bathymetric mapping results showed that waters depth average near the islands ranging
from 50 to 150 m. Deep water in general is in the southern part of the conservation area,
directly opposite the Banda Sea, as well as the eastern part of Saparua and Nusalaut islands.
Chlorophyll-a concentration ranged from 0.4 to 1.0 mg/m3. The concentration ofchlorophyll-a was high (1.0 mg/m3) in the bay waters and around the estuary. The highconcentration of chlorophyll-a on the waters of Saparua and Nusalaut islands indicates thatthese waters contribute to high productivities.

Fig. 1. Delineation of the Lease Islands (the Islands Cluster VII) conservation area.

40
ABRAHAMSZ James, AYAL Frederik W., LOPULALAN Yoisye and MAKAILIPESSY Marvin M.

Criteria and parameters to determine conservation area category
Ecological
Biodiversity: a biodiversity parameter rate was based on the existence of three keystone
ecosystem at the coastal area, mangroves, seagrass and coral reef. Among three ecosystems, abiodiversity value was in accordance with the species distribution. Distribution of mangrove
species ranged from 4 to 12 species and that of seegrass ranged from 5 to 8 species. Moreover,many species of coral reefs were found in this area. The average value of the entire ecosystem
diversity is 3.01. Biodiversity is given a score of 3.
Originality: 75.96% of mangrove, 76.51% of seagrass and 75.74% of coral reefs wereoriginal ecosystems. Originality is given a score of 3.
Ecological Connectivity: the status of ecosystem components connected to 73.15%.
Ecological Connectivity is given a score of 2.
Represent: assessment of these parameters is based on the number of ecosystem types
and the main habitats in an area. At a regional level, there are 11 types include: mangroves,seagrass beds, coral reefs, lagoons, muddy, sandy beaches, rocky beaches, steep coast, pasi,
shallow waters and deep sea. There are 9 types (81.82%) at Haruku, 10 types (90.91%) at
Saparua and 10 types (90.91%) at Nusalaut. The average value of the representation is87.88%. Represent is given a score of 3.
Uniqueness: some uniqueness were found in this area, such as local wisdom (sasi) andcommunity knowledge about the location of fishing ground of red snapper group (thisknowledge is called pasi). These wisdom and knowledge are found only in the Moluccas,
particularly in the Lease Islands, thus Uniqueness is given a score of 2.
Productivity: productivity was assessed by abundance of reef fish. It is found that the
productivity was 949 kg/ha at Haruku, 2,151.5 kg/ha at Saparua and 2,411.5 kg/ha at Nusalaut,which indicates very high productivity in this region. Productivity is given a score of 3.
Migration Area: the waters around the candidate of conservation area is a migration areaof 7 species of whale, 5 species of dolphins and 4 species of sea turtles. The presence of threegroups of mega fauna illustrates the highly migratory species richness around the area.
Migration Area is given a score of 3.
Habitat of Endangered and Protected Species: an endangered species is found in Dugong
dugon and protected species are found in whales, dugongs, turtles, top shell and green turban.
Habitat of Endangered and Protected Species is given a score of 3.
Spawning Ground: a location of spawning ground was found only at the Leinitu waters,
Nusalaut Island by using participatory mapping. Spawning Ground is given a score of 1.
Nursery Ground: 491.67 ha of mangrove area and 91.98 ha of seagrass beds were an areaof nursery ground of marine fauna in the surrounding area. Nursery Ground is given a score
of 3.

41
Identification and Inventory of Coastal and Small Islands Conservation Area in the Lease Islands, Maluku ProvinceSocialCommunity Support: among 80 respondents in three islands, 88.75% agreed to support
conservation area development. The result shows the status of more than 75% of people
support the development of a conservation area, so Community Support is given a score of 3.
Conflicts of Interest Potential: conflict of space utilization, fishing gear conflicts andpolitical conflicts were assessed. All the components are generally considered low, an averageof 92.50% of respondents said that the potential for conflict is low. Conflicts of Interest
Potential is given a score of 3.
Potential of Threats: results of field assessment show only one of the six factors
identified as potential of threats (the use of fishing gear and techniques damages theenvironment). The status of the potential of threat is low, thus Potential of Threats is given ascore of 3.
Potential of Maritime History: three potential of maritime history, such as a routecolonial cruise, a historical tourism and an international live aboard since 1949, wereidentified. Potential of Maritime History is given a score of 3.
Local Wisdom: three types of local wisdom, such as sasi laut, amula laut and local
knowledge of pasi as a potential fishing ground, were identified in this area, which cansupport conservation. Local Wisdom is given a score of 3.
Customs: assessment is done to find the existence of institutions and customs as well as
the effectiveness of potentially support on conservation area development. About 14 local
agencies are considered effective. Local institutional governance systems still work
effectively, thus Customs is given a score of 3.
Economic
Importance Value of Fisheries: the assessment was based on the value of Location
Quotient (LQ) of the value of fishery production. The calculation of the value of LQ was 1.07
which shows fisheries potentially are very important economically. Importance Value of
Fisheries is given a score of 3.
Recreation and Tourism Potential: recreation and tourism potential of the conservation
areas candidate includes beaches, mangrove ecotourism, seagrass ecotourism, coral reef
ecotourism and maritime history. Recreation and Tourism Potential is given a score of 3.
Aesthetics: coral reefs in the waters, white sand of beaches and cleanliness of the marine
environment in this region have a high aesthetic value, thus Aesthetics is given a score of 3.
Access to Location: assessment of the access was done by calculating the average valueof access to three main islands, Haruku, Saparua and Nusalaut through sea transportation. The
value of access was 89.58%, 92.19% and 67.86% in Haruku, Saparua and Nusalaut,respectively. These results indicate that the status of access is very easy, thus Access to
Location is given a score of 3.

42
ABRAHAMSZ James, AYAL Frederik W., LOPULALAN Yoisye and MAKAILIPESSY Marvin M.

Determination of category and type of conservation area
Categories of the conservation areas are determined through an assessment of scores andweights in three general categories, conservation of coastal and small islands (CCSI),
maritime conservation area (MCA) and marine waters conservation area (MWCA). The
results show the highest value is the value of CCSI, 1.15 (Table 1). These results illustrate thatthe conservation area candidate of the Lease Islands should be developed with CCSI category.

Table 1. The results of the determination of Conservation Areas Criteria.
No Criteria and Parameters
Ecological
1 Biodiversity

CCSI*
MCA*
MWCA*
Score
(S) Weight WxS Weight WxS Weight WxS
(W)
(W)
(W)
3

4

12

2

6

4

12

2 Originality
3 Ecological connectivity
4 Represent

3
2
3

4
4
4

12
8
12

1
1
1

3
2
3

4
4
3

12
8
9

5 Uniqueness6 Productivity
7 Migration area

2
3
3

4
3
3

8
9
9

1
1
2

2
3
6

4
3
3

8
9
9

3

3

9

1

3

4

12

9 Spawning ground
10 Nursery ground

1
3

4
3

4
9

1
1

1
3

3
3

3
9

Social
1 Community support
2 Conflict interest potential
3 Threats potential

3
3
3

2
2
2

6
6
6

4
4
3

12
12
9

2
2
4

6
6
12

3
3
3

2
2
2

6
6
6

4
2
4

12
6
12

1
1
1

3
3
3

1 Importance value of fisheries
2 Recreation and tourism potential
3 Aesthetics

3
3
3

2
2
2

6
6
6

3
4
4

9
12
12

2
2
2

6
6
6

4 Access to location
Total

3
56

2
6
56
152
1.15
Selected

8

Habitat (endangered and protected
species)

4 Maritime history potential
5 Local wisdom
6 CustomEconomic

Total score
Status of the area

4
12
48
140
1.13
Not selected

2
6
54
148
1.14
Not selected*CCSI: conservation of coastal and small islands, MCA: maritime conservation area and
MWCA: marine waters conservation area.

43
Identification and Inventory of Coastal and Small Islands Conservation Area in the Lease Islands, Maluku Province

CCSI consists of four types, Coastal Asylum, Small Island Asylum, Coastal Park andSmall Island Park. In accordance with three criteria, Coastal Asylum has a value of 22, Small
Island Asylum with a value of 27, the Coastal Park with a value of 30 and Small Island Parkwith a value of 35. These results suggest that Small Island Park is suitable for theconservation area candidate. High value on the type of Small Island Park is also based on theimportance of conservation in the region that has been utilized by the community, with thesupport of the potential of small islands and the surrounding waters.
In general, the effectiveness of a protected area depends on a complex set of interactions
between biological, economic and institutional factors. While MPAs might provide protection
for critical habitats and cultural heritage sites, their impact is less certain as a tool to enhance
fishery management (SANCHIRICO et al. 2002).
Protected areas are essential for the conservation of biodiversity and are one of the pillarsof virtually all conservation strategies (AGOSTINI et al. 2015). In this context, the managementof coastal/marine protected areas represents one of the main mechanisms for the protection ofareas with significant ecological importance, functioning as an essential tool for ensuring theconservation of nature and the promotion of sustainable development (ESTIMA et al. 2014).

Conclusion
Conservation area candidate of coastal and small islands at the Lease Islands has thehighest score and becomes the selected category with a score-weighting of 1.15, higher thanthe other two categories. The type of conservation area is set to a Small Island Park, anddesignated by the name of Small Island Park of the Lease Islands.

Acknowledgement
Authors would like to thank Department of Marine and Fisheries of the Maluku Province
for supporting this research.

References
AGOSTINI, V. N., MARGLES, S.W., KNOWLES, J. K., SCHILL, S. R., BOVINO, R. J. and BLYTHER,
R. J. 2015. Marine Zoning in St. Kitts and Nevis: A Design for Sustainable Managementin the Caribbean. Ocean and Coastal Management, 104: 1–10.

44
ABRAHAMSZ James, AYAL Frederik W., LOPULALAN Yoisye and MAKAILIPESSY Marvin M.

ESTIMA, D. C., VENTURA, M. A. M., RABINOVICI, A. and MARTINS, M. C. P. F. 2014.
Concession in Tourism Services and Partnerships in the Marine National Park of
Fernando de Noronha, Brazil. Journal of Integrated Coastal Zone Management, 14(2):215–232.
LUBIS, S. B., SURAJI, RASYID, N., KENYO, A. S., JANAH, A. R., WULANDARY, D. R.,
SAEFUDING, M., ASHARI, M., WIDIASTUTIK, R., KUHAJA, T., AFANDI, Y. A., SOFIULLAH,
A. and SUDARSONO, K. 2014. Guide to Identification, Inventory and Reservation ofMarine, Coastal and Small Islands Conservation Area, 43 pp., Ministry of Marine andFisheries Affairs, Jakarta, Indonesia.
SANCHIRICO, J. N., COCHRAN, K. A. and EMERSON, P. M. 2002. Marine Protected Areas:
Economic and Social Implications, 2–26, Discussion Paper, Resources for Future,
Washington, D.C., USA.

45
南太平洋海域調査研究報告
OCCASIONAL PAPERS

No.58（2017 年 3 月）
No.58（March 2017）

Assessment of the Impact of Wildlife Tourism on Animals:
A Case Study of Amami-Oshima Island
SUZUKI Mariko1, INOUE Eiji2, ITO Keiko3 and FUJITA Shio4
1: Research Center for the Pacific Islands, Kagoshima University
2: Faculty of Science, Toho University
3: Yuinoshima Animal Clinic, Amami
4: Joint Faculty of Veterinary Medicine, Kagoshima University

Abstract
Wildlife tourism is a large and global industry. It contributes to wildlife conservation, while sometimes
negatively impacting on animals. Numerous studies have reported the impact of wildlife tourism on
animals. They have used several parameters, such as physiological response, behavioral modification andpopulation dynamics, to evaluate the effects of such tourism on animals. In Amami-Oshima Island ofKagoshima Prefecture, Japan, the number of tourists has been increasing recently. One of the main wildlife
tourism activities is a night tour for watching a nocturnal animal including Amami rabbit (Pentalagus
furnessi), which is an endemic species inhabiting only Amami-Oshima and Tokunoshima islands. In orderto evaluate the effects of wildlife tourism on Amami rabbits, we investigate their physiological andbehavioral responses to the fluctuation of traffic volume on the road used for night tours. Such research willlead to the realization of stress-free tours on wildlife.
Keywords: Amami rabbit, human disturbance, stress, traffic, wildlife tourism

Wildlife Tourism for Animals
Wildlife tourism has recently become a large and global industry. In order to watch wild
animals, people visit natural areas, such as rain forests and savannas, even if they are in
distant countries. Because a tourist spends money not only on tour, but also on transport,
accommodation, food and souvenirs, it is considered that wildlife tourism brings an economic
profit to the habitat countries and/or regions. Moreover, the experience in nature gives anopportunity of environmental education to tourists. The economic and social value of wildlife
tourism let people stop a destructive development and choose the sustainable use of a nature,
which leads to the conservation of the target animals and their living environment (e.g.,

46
SUZUKI Mariko, INOUE Eiji, ITO Keiko and FUJITA ShioWEAVER 1999). However, several studies have reported negative impacts of tourism on
animals (for example a review about birds: STEVEN et al. 2011).

How to Assess the Impact of Wildlife Tourism
Several ways are used to assess the impact of wildlife tourism on animals. Measuringphysiological response has been a major technique for evaluating the impact on animals in thelast decade. The plasma and/or feces glucocorticoid (GC) concentration (BUSCH and
HAYWARD 2009, MILLSPAUGH and WASHBURN 2004), the heart rate (king penguins[Aptenodytes patagonicus]: VIBLANC et al. 2012) and hematological changes (southernstingrays [Dasyatis americana]: SEMENIUK et al. 2009) are used for measuring thephisiological response to the tourism. GCs have been used as an index of stress level though
the primary role of GCs is to regulate the basic energy metabolism of the cells. When
individuals encounter unexpected challenges, their GC concentrations rise beyond thethreshold, sometimes posing a threat to their survival (in details: BUSCH and HAYWARD 2009).
However, the interpretation of results can be complicated because many factors such as
season, sex and age can affect GC levels (BUSCH and HAYWARD 2009). The modifications ofanimals’ behavior after an encounter with tourists have also been surveyed as the effects ofwildlife tourism. The self-scratching, aggressive behaviors, and change of habitat area wereobserved as the behavioral responses of animals to wildlife tourism (LUSSEAU 2005,
MARÉCHAL et al. 2011, STAFFORD-BELL et al. 2012). Although mortality and reproductive
success are the most important parameters of population dynamics and useful for evaluating
the impact of tourism, it is difficult to investigate these parameters of animals with long lifespans. While measuring the physiological responses provide us the quantitative data, animals
can cope with human disturbances by changing their behavior and/or being habituated without
physiological disorder. Therefore, it is considered better to perform a comprehensive
evaluation by combining several parameters.

What of Tourism Affects Animals Negatively?
Several factors of tourism have been reported to negatively affect wildlife. Firstly, theheavy traffic can affect the behavior and physiology of animals. For example, bottlenose
dolphins (Tursiops spp.) in New Zealand seem to avoid the fjord, which is a tourist spot,
during the seasons of increasing boat traffic (LUSSEAU 2005). The hoatzin (Opisthocomus
hoazin) chicks living in the tourist-exposed sites in Amazonian rainforest lakes also showed
higher mortality and plasma GC levels, than those living in the undisturbed sites (MÜLLNER et47
Assessment of the Impact of Wildlife Tourism on Animals: A Case Study of Amami-Oshima Islandal. 2004). These indicate that the heavy traffic might cause noise disturbance and increase therisk of traffic accidents for the animals living there.
Even while observing the animals on foot, the tourists give some stress to the animals. In
the Red Ape Encounters in the Malaysian state of Sabah, an ecotourism program whichfacilitates trekking for wild orangutans (Pongo pygmaeus morio), although the visitors areprovided guidelines when observing animals, the stress hormone levels of the two habituatedorangutans significantly elevated on the day after tourist visitation (MUEHLENBEIN et al. 2012).
At Sandfly Bay in New Zealand, as the number of tourists increased dramatically, theyellow-eyed penguins (Megadyptes antipodes) showed higher stress hormone levels andreduced breeding success compared to those at the undisturbed breeding sites (ELLENBERG et
al. 2007). In addition, close observation by tourists also might cause the disease transmission
from humans to animals (WOODFORD et al. 2002).

Wildlife Tourism in Amami-Oshima Island
Amami-Oshima Island belongs to the Nansei Islands in the south of Japan, and is locatedat the northern limit of the subtropical climate zone. Approximately 80% of its land is coveredby evergreen forests, most of which are secondary forests. The island is surrounded by thecoral reefs, and is famous as a diving and fishing spot. The Nansei Islands, including
Amami-Oshima Island, are one of the biodiversity hotspot areas in the world because they are
inhabited by many endemic species such as Amami rabbit (Pentalagus furnessi), Habu
(Protobothrops flavoviridis) and Otton frog (Babina subaspera).
Wildlife tourism in Amami-Oshima mainly involves a night-tour for watching Amami
rabbits by automobile, and a whale-watching tour by boat. During whale watching, thetourists can see the humpback whales (Megaptera novaeangliae) and bottlenose dolphins(Tursiops aduncus). In the night tour, one can see not only the Amami rabbits but also othernocturnal animals including rats, frogs and snakes. The number of tourists in these wildlife
tourism areas has been increasing recently. One of the reasons for this is the registration of theAmami and Ryukyu islands as the World Natural Heritage Sites by the UNESCO, and theannual total number of tourists has been increasing constantly in Amami-Oshima Island(KAGOSHIMA PREFECTURE 2016).
An increase in the number of tourists has led to an increase in the concern about the
impact of tourism on animals. The Amami-Oshima Eco Tour Guide Association implements
rules and conducts the training of guides for all tourism sites. The night-tours are carried out
by using the forestry roads spread through the forests and old roads which were no longer
used. These roads make it easy for the tourists to access the Amami rabbits’ habitats and theysometime visit there without guides. This makes difficult to regulate all tours.

48
SUZUKI Mariko, INOUE Eiji, ITO Keiko and FUJITA Shio

Monitoring Physiological and Behavioral Responses of Amami Rabbits
in Amami-Oshima
In order to assess the impacts of such activities on the Amami rabbits, we haveinvestigated their physiological and behavioral responses to the fluctuation of the traffic
volume on the road used for a night-tour. The Amami rabbit is a nocturnal and burrowing
animal, and is endemic to Amami-Oshima and Tokunoshima islands (YAMADA et al. 2000). It
often uses open areas, including roads, for feeding on grasses and excreting during the night.
We investigate the road use by Amami rabbit on the forestry road used for a night tour inAmami-Oshima Island. The fecal piles and the videos by camera trapping during a night werecounted on 1.7 km of the road from July to December 2015. In addition, in order to measure
the cortisol levels, fecal samples were collected. Each fecal sample has been individually
identified by analyzing the DNA extracted from it and then the stress level of each individual
has been investigated. Hormonal and DNA analyses are ongoing. We also obtained the data on
the traffic volume of the target road using a counter machine which was installed by the
Kagoshima Prefecture.
The traffic volumes during nights in August (mean: 3.5 cars per night, max: 9 cars) and
September (mean: 3.4 cars, max: 11 cars) were greater than those during the other months(e.g., mean: 0.8 cars, max: 3 cars on December). The number of fecal piles and videos in
August were lower than those in the other months (SUZUKI et al. 2016). These results suggest
the negative impact of tourism on the behavior of Amami rabbits. We are going to analyze therelationship between the fluctuation of traffic and their stress levels.
We use the traffic volume as a parameter of the tourism pressure to animals because it
has been often used and is the measureable even at night. However, it is difficult to observe
the situation of each tour in detail. Other parameters, such as distance between animals andtourists, speed of a vehicle and tourist behaviors may be necessary to be analyzed.
Furthermore, in order to assess the impact on the population of the Amami rabbit, we would
like to focus on the effect of tourism in long-term. Such research will lead to the realization ofstress-free tours on wildlife.

Acknowledgments
This study was supported by Special Budget of the Ministry of Education, Culture,
Sports, Science and Technology, Japan, in 2015 (Establishment of Research and Education
Network on Biodiversity and Its Conservation in the Satsunan Islands) and a grants-in-aid of
the Inui Memorial Trust for Research on Animal Science, Japan. We thank Kagoshima
Prefecture for permitting to use the traffic count data.

49
Assessment of the Impact of Wildlife Tourism on Animals: A Case Study of Amami-Oshima Island

References
BUSCH, D. S. and HAYWARD, L. S. 2009. Stress in a Conservation Context: A Discussion of
Glucocorticoid Actions and How Levels Change with Conservation-Relevant Variables.
Biological Conservation, 142(12): 2844–2853.
ELLENBERG, U., SETIAWAN, A. N., CREE, A., HOUSTON, D. M. and SEDDON, P. J. 2007.
Elevated Hormonal Stress Response and Reduced Reproductive Output in Yellow-Eyed
Penguins Exposed to Unregulated Tourism. General and Comparative Endocrinology,152(1): 54–63.
KAGOSHIMA PREFECTURE 2016. Summary of Amami Island, 402 pp., Kagoshima Prefecture,
Kagoshima, Japan (in Japanese).
LUSSEAU, D. 2005. Residency Pattern of Bottlenose Dolphins Tursiops spp. in Milford Sound,
New Zealand, Is Related to Boat Traffic. Marine Ecology Progress Series, 295: 265–272.
MARÉCHAL, L., SEMPLE, S., MAJOLO, B., QARRO, M., HEISTERMANN, M. and MACLARNON, A.
2011. Impacts of Tourism on Anxiety and Physiological Stress Levels in Wild Male
Barbary Macaques. Biological Conservation, 144(9): 2188–2193.
MILLSPAUGH, J. J. and WASHBURN, B. E. 2004. Use of Fecal Glucocorticoid Metabolite
Measures in Conservation Biology Research: Considerations for Application andInterpretation. General and Comparative Endocrinology, 138(3): 189–199.
MUEHLENBEIN, M. P., ANCRENAZ, M., SAKONG, R., AMBU, L., PRALL, S., FULLER, G. and
RAGHANTI, M. A. 2012. Ape Conservation Physiology: Fecal Glucocorticoid Responses
in Wild Pongo pygmaeus morio following Human Visitation. PLoS ONE, 7(3): 1–10.
MÜLLNER, A., EDUARD LINSENMAIR, K. and WIKELSKI, M. 2004. Exposure to Ecotourism
Reduces Survival and Affects Stress Response in Hoatzin Chicks (Opisthocomus hoazin).
Biological Conservation, 118(4): 549–558.
SEMENIUK, C. A. D., BOURGEON, S., SMITH, S. L. and ROTHLEY, K. D. 2009. Hematological
Differences between Stingrays at Tourist and Non-Visited Sites Suggest PhysiologicalCosts of Wildlife Tourism. Biological Conservation, 142(8): 1818–1829.
STAFFORD-BELL, R., SCARR, M. and SCARPACI, C. 2012. Behavioural Responses of theAustralian Fur Seal (Arctocephalus pusillus doriferus) to Vessel Traffic and Presence ofSwimmers in Port Phillip Bay, Victoria, Australia. Aquatic Mammals, 38(3): 241–249.
STEVEN, R., PICKERING, C. and GUY CASTLEY, J. 2011. A Review of the Impacts of Nature
Based Recreation on Birds. Journal of Environmental Management, 92(10): 2287–2294.
SUZUKI, M., FUJITA, S., INOUE, E. and ITO, K. 2016. Effects of Tourism on the PhysiologicalStress Levels and Behavior in Amami Rabbit. Occasional Papers (Kagoshima University
Research Center for the Pacific Islands), 57: 37–39 (in Japanese).
VIBLANC, V. A., SMITH, A. D., GINESTE, B. and GROSCOLAS, R. 2012. Coping with
Continuous Human Disturbance in the Wild: Insights from Penguin Heart Rate Response
to Various Stressors. BMC Ecology, 12(1): 10.

50
SUZUKI Mariko, INOUE Eiji, ITO Keiko and FUJITA ShioWEAVER, D. B. 1999. Magnitude of Ecotourism in Costa Rica and Kenya. Annals of Tourism
Research, 26(4): 792–816.
WOODFORD, M. H., BUTYNSKI, T. M. and KARESH, W. B. 2002. Habituating the Great Apes:
The Disease Risks. Oryx, 36(2): 153–160.
YAMADA, F., SUGIMURA, K., ABE, S. and HANDA, Y. 2000. Present Status and Conservation of
the Endangered Amami Rabbit Pentalagus furnnessi. Tropics, 10(1): 87–92.

51
南太平洋海域調査研究報告
OCCASIONAL PAPERS

No.58（2017 年 3 月）
No.58（March 2017）

Cassava and Sweet Potato in Western Seram,
Maluku Province: Diversity, Cultivation and Utilization
RAHARJO Simon H. T.1, HETHARIE Helen1, AUGUSTYN Gelora H.1 and PESIRERON Maritje2
1: Faculty of Agriculture, Pattimura University
2: Maluku Agricultural Technology Assessment Board

Abstract
Small islands in Maluku have a high diversity of root crops, with cassava and sweet potato being
among the most common. The objectives of this research were to study the diversity of cassava and sweet
potato in Western Seram, their cultivation systems, their role as staple food crops and to collect theaccessions ex situ. This study used a survey method in 15 sample villages/negri scattered throughout
Western Seram. Morphological characterizations used cassava and sweet potato descriptors (adapted fromHUAMÁN [1991] and Fukuda et al. [2010]). Information on the local varieties, their cultivation andutilization was obtained by Focus Group Discussion (FGD) plus interviews with farmer respondents fromthe sample village/negri. Secondary data were gathered from a desk study. From the surveys, 105 cassava
accessions and 71 sweet potato accessions were found and collected. They were grown under mixed
culture/agroforestry system called kabong or dusun, consisting of forestry plants, spices, perennial andannual crops. Inamosol Subdistrict which is in an inland (non-coastal) region has the greatest diversities ofboth crops. Both crops were found to be among the most important staple food sources, in addition to sagoand cereals. Their ease of cultivation and adaptation to a wide range of geographic conditions made them
have an important role as security food crops in Western Seram.
Keywords: agroforestry, food security, genetic diversity, germplasm, staple food

Introduction
Cassava (Manihot esculenta Crantz, Euphorbiaceae) and sweet potato (Ipomoea batatas(L.) Lam., Convolvulaceae) are annual root crops which are classified as palawija (non-riceannual food crops) in Indonesian agriculture. They are important food crops in eastern
Indonesia. In the archipelagic Maluku Province (the southern half of the Moluccas),cultivation of these crops is spread widely in medium and small islands, primarily as
subsistence crops and food reserves. Thus, these root crops also have an important role infood security and resilience. Both of these root crops are grown in most of the islands ofMaluku as a component of plant cultivation systems of kabong or dusun (polyculture,

52
RAHARJO Simon H. T., HETHARIE Helen, AUGUSTYN Gelora H. and PESIRERON Maritje

agroforestry), and especially has a role as a source of staple food for the families. They are an
important source of carbohydrate, besides rice and sago. Rice has increasingly displaced theposition of sago and root/tuber crops as the major staple food sources. However, there is adetermination of the local government and the community recently to revive the role of root
crops and sago, which will strengthen food security in the region.
Traditional farmers in Maluku who grow cassava and sweet potato usually use several
cultivars or landraces on their lands. Tens or even hundreds of landraces can be found in aregion. For example, studies conducted previously showed that in one village in Maluku morethan 10 different sweet potato accessions were found (HUKUNALA 2010, MAITIMU 2008).
Studies in the field have also shown that the same is true of cassava.
Scientific studies which include germplasm characterization, genetic and agronomic
evaluation and estimation of crop potentials of both root crops have been conducted inWestern Seram District in order to strengthen its role in supporting food security and enhancetheir economic value. So far the two root crops still have limited roles as subsistence crops.
Currently there is 13,000 ha of potential land for food crops in Western Seram District, which
can be planted with cassava and sweet potato. Thus, space for development of both crops isstill wide open toward their utilization for home industries and for supply of raw materials forthe food and beverage industry, animal feed, chemical and pharmaceutical industries in the
future.
As subsistence crops, cassava and sweet potato are considered to have low economic andsocial values. Their roots are generally consumed immediately after being boiled or fried.
Processed products from these crops are still very limited in Maluku, for example in the formof enbal dry bread (in Southeast Maluku), suami and keripik cracker from cassava, whereas
sweet potato is only prepared by boiling/steaming and frying. Thus, possibility for theirprocessing development is still very widely open, to improve the roles of both crops inaddition to that of subsistence one.
To strengthen the role of cassava and sweet potato, both as a subsistence or food security
and as cash crops in Western Seram District, various information need to be collected about
the genetic resource potentials of both crops in Western Seram, cultivation land sizes at thefarmer level, farming technology level applied by farmers and utilization of the crops.

Objectives
The objectives of the research described in this paper are to: 1) explore, collect anddescribe the genetic diversity of cassava and sweet potato in Western Seram, 2) study
cultivation and utilization of cassava and sweet potato by farmers in Western Seram and 3)
study the role of both crops in the supply and diversification of staple food.

53
Cassava and Sweet Potato in Western Seram, Maluku Province: Diversity, Cultivation and Utilization

Methodology
This research was conducted with an exploratory survey, involving exploration,
morphological characterization of cassava and sweet potato germplasms, as well as collectionof data about their cultivation and utilization at farmers’ level. In this research, a desk study
was also undertaken, which began with collection of secondary data and literatures relevant tothe achievement of the research objectives, information about geographical conditions of the
fields.
The location of the exploratory survey that was conducted from July to October 2012
was Western Seram District, with 15 village samples within 8 subdistricts that were
geographically spread throughout the district, on north, west and south coastal areas andinland areas. It covered the subdistricts: Inamosol, Kairatu, Kairatu Barat, Seram Barat,
Hunamual Muka, Waesala, Taniwel and Taniwel Timur.
Assignment of the sample villages and farmers were conducted with purposive sampling.
One to two sample villages were taken from each of the 8 subdistricts. The number of
respondent farmers was 4–8 per village. Information from the farmers was gathered throughguided interviews and Focus Group Discussion (FGD), which were guided by questionnaires.
Heads of villages (raja) and Agricultural Extension Workers (Petugas Pertanian Lapangan,
PPL) were also included as key informants in separate interviews. Observations of crops wereconducted directly in the sample farmers’ fields, to collect data on the cultivars/landraces of
cassava and sweet potato that were grown and their cultivation techniques. Observations to
obtain description and characterization data were performed with morphological description
forms which were previously prepared based on descriptors of cassava and sweet potato(FUKUDA et al. 2010, HUAMÁN 1991).

Results and Discussion
Cultivation of cassava and sweet potatoes in Western Seram
The climate in Western Seram District belongs to a tropical marine climate. It is strongly
influenced by the surrounding wide seas and by the monsoon climate, i.e., the North West or
East or Southeast seasons. A change of seasons is always punctuated by a transitional season(pancaroba). Based on the records of rainfall and number of rainy days for the 2011 (Kairatu
Climatology Station), the peak of rainy season occurs between June and August.
Cropping patterns of cassava and sweet potato by farmers are based less on considerationof season. They are based more on the habits of the local farmers. After land clearing or
previous harvest they immediately plant the crops. Replanting was done immediately after
harvesting previous crops with no or minimal land preparation. Cassava with different
harvesting ages is harvested as needed for daily family consumption. Sweet potato is usuallyplanted at the end of the rainy season, and its harvest time is more based on the harvest ages.

54
RAHARJO Simon H. T., HETHARIE Helen, AUGUSTYN Gelora H. and PESIRERON Maritje

Western Seram District is a second-largest cassava producer district in Maluku afterCentral Maluku District. Harvested areas of cassava and sweet potato in Western Seram in2013 were 9,810,000 ha and 458 ha, with a production of 176,900,000 t and 5,137 t freshroots, respectively. This means that the productivity of both commodities was relatively low,amounting to about 18.0 t/ha for cassava and 11.2 t/ha for sweet potato (BPS 2014).
To support the economy and food security of Western Seram District, the expansion ofplanting area of cassava and sweet potato are still very possible, considering the district still
has a large enough suitable potential land for food crops, amounting to 13,000 ha (BPS 2012).
For Maluku Province, development of the root crop cultivation can be directed to dry land
suitable for food crops, namely IV and IV ay ax zones, amounting to 718,000 ha in Maluku(SUSANTO and BUSTAMAN 2006).
In Western Seram, cassava and sweet potato are generally grown in mixed cultivation
systems called kabong or dusun. These systems are practised by indigenous inhabitants ofWestern Seram, i.e., the Alune and Wemale ethnics, from the coast up to the upland. In such acultivation system, both crops have an important role as a source of subsistent staple food
which also means to contribute to food security of the people. Therefore, efforts to increase
their production will strengthen their food security.
Although in the urban areas the position of root crops has been increasingly displaced by
rice, in the rural areas traditional communities still maintain a diet with mixed staple foodsources, consisting of tubers (especially cassava, sweet potato, yams/Dioscorea spp., taro andcocoyam), sago, plantain, corn and some legumes. Cassava and sweet potato are the staple
food sources that are very important for and generally prefered by Western Seram people.
They also ‘must be present’ in the foods provided in traditional events.
Many subsistent, traditional and relatively underdeveloped farmers can still be found inWestern Seram District, whereas more advanced farmers are concentrated in transmigration
areas, such as in Kairatu and Kairatu Barat, which were not included as sample areas. In
general, ownership of cultivated lands ranged between 0.25 and 2 ha per farmer family. The
practised agriculture systems are mixture of annual crops (maize, beans, root crops andvegetables) and the more dominant perennial plants (bananas, clove, nutmeg, coconut, cacao
and others).
Cassava and sweet potato are grown as subsistence crops and as sources ofcarbohydrates, generally with small acreages ranging from 100 m2 to 0.5 ha of the total
farmers’ cultivated lands (0.25 to 2 ha). They are among the dominant food crops;
nevertheless, their cultivation areas are small. Most of the farmers’ lands are planted withperennial crops cash crops. This pattern of cultivation is actually the result of cultivation
system that is directed towards the establishing perennial crop plantation, which is practiced
by most farmers in Western Seram. The system starts from forest clearance by slashing(pameri) and burning (pembakaran), minimal land preparation/tilage and planting of initialannual crops. In the first year, the land was planted with cereals, legumes and vegetables,
which will gradually be shifted to root crops, including cassava and sweet potato, as well as

55
Cassava and Sweet Potato in Western Seram, Maluku Province: Diversity, Cultivation and Utilization

bananas. At the same time in the early years of the land opening, the newly cleared land isplanted with seedlings of or young perennial crops. Establishing a perennial cash crop
plantation generally becomes the main long-term goals. The main perennial crops include
coconut, cloves, cacao, nutmeg, varieties of fruit, multipurpose and timber trees. Sago trees
are rarely planted intentionally. During the time that the perennial plants is growing into
production ages, subsistence food crops are grown in the spaces between the growing
perennials. In such a system, cassava, sweet potato and other root crops are the dominantcrops grown, when the soil fertility has begun to decline and less suitable for cerreals,
legumes and vegetables, and when the annual cash crops are growing into production ages.
All respondent farmers grew cassava and sweet potato among various crops and plants ina mixed cropping system, either with or without regular arrangements. In Seram, this type of
mixed cropping system is called kabong. Other root crops that are grown in the such a land
include cocoyam (Xanthosoma sagittifolium), yam (Dioscorea alata) and gembili (D.
esculenta), in addition to other important sources of carbohydrates, namely banana, sago,
upland rice and corn. In agriculture system adopted by farmers in Western Seram, land
preparation techniques is done by slashing bushes and felling some trees (pameri), followedby burning them when dry. For cultivation of food crops, including cassava and sweet potato,
most farmers apply no- or minimal tillage. A simple soil preparation is done to form kuming(mounds to plant cassava or sweet potato cuttings) using tools that include hoes, wooden
drills and other tools with a low efficiency. The cost for production facilities is usually low
because it is only needed to buy hoes, machete or other simple tools that can be used for many
years. Sometime manure is used, but synthetic fertilizers and pesticides are rary applied.
Intensive crop maintenance are rarely practiced. Family labor is usually not considered as acomponent of cost. Thus, in the kabong cropping system, input cost for the root crop
production is low. This farming system is basically a traditional agricultural system that has
been employed for generation by the various communities living in the villages and near theforests. The low input system is initially applied in cassava and sweet potato cultivation
because of a lack of capital other than the land, as well as a lack of education and training on
agriculture technology.
The respondent farmers rarely grew cassava and sweet potato with orderly plant spacing.
During field observations, irregular plant spacing ranging from 0.6 m x 0.6 m to 1 m x 1 m forcassava and 0.25 m x 0.5 m to 0.5 m x 0.5 m with 1–3 cuttings per mound for sweet potato
were found. Some farmers take into account planting season for cassava and sweet potato, i.e.,
the end or after the rainy season (August to December). Nevertheless, most farmers do nottake into account certain months as cassava planting season. Cassava are planted throughout
the year, that is right after harvesting the previous crop. On the other hand, farmers tend toplant sweet potato at the end of the rainy season.
Because cassava is generally harvested in accordance to the need for family consumption,
there is practically no harvest season for cassava. Either cassava or sweet potato is notharvested at once, but as needed for family consumption or for sale at a small scale. Root

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RAHARJO Simon H. T., HETHARIE Helen, AUGUSTYN Gelora H. and PESIRERON Maritje

sales are usually done locally and in a small scale (Fig. 1). Transporting further to otherregions is rare. This is related to the fact that farmers in Western Seram seldom store cassava
and sweet potato storage roots for more than several days, except “storing” with the plants
alive or by delaying harvesting. Live storing is seldom practised for sweet potato roots,
because farmers know if they are harvested late (after the harvesting age) then a highpercentage of the storage roots will get damaged. Farmers generally do not dry the roots,
make gaplek or cassava flour, as practiced in Java. They harvest the roots as needed, so that
excess of production is not common. Sweet potato roots are also utilized only in fresh
condition. According to the farmers, harvesting age for cassava ranges from 3 to 12 months(mostly harvested at 6 months of age), and for sweet potato 3 to 4 months.
As a result that the farmers do not harvest cassava and sweet potato simultaneously in
one cropping season, it is difficult to predict their yields per unit area. It is also complicatedby the fact that farmers do not weigh the harvested storage roots. However, a raw estimate ofyield for cassava is between 2–5 kg per plant (≈20–50 t/ha). This is higher than that stated by
ALFONS and WAMAER (2015) on the estimated productivity of cassava in Maluku of 12 t/ha or
the Maluku statistical data (BPS 2012) of 17.87 t/ha. Estimated productivity of sweet potato is
1–1.5 kg per plant, or approximately 20–30 t/ha.

Fig. 1. Marketing and processing of cassava and sweet potato in Western Seram; (a) and (b) small-scale
sale of fresh roots in a local market in Piru, (c) and (d) processed cassava in the forms of dry
products, such as crackers and embal (a dry poisonous cassava bread).

57
Cassava and Sweet Potato in Western Seram, Maluku Province: Diversity, Cultivation and Utilization

Cuttings as planting materials used by farmers are generally obtained from the plants
grown previously and only rarely do farmers obtain them from other farmers or fromneighboring villages. From the observations in the respondent farmers’ fields it was found thatthe farmers grew in average one to three varieties of cassava or sweet potato on their field.
However, it was also found that some farmers grew more than five varieties of cassava on
their field, such as those found in Morekao (West Seram Subdistrict), Seaputih (Hunamual
Muka Subdistrict) and Musihuwey (Taniwel Timur Subdistrict). In Ursana (Inamosol
Subdistrict), in a field of a farmer group 6 sweet potato varieties were found. Such farmers
can be seen to become “collectors” of local varieties (landraces) and may play a role in the insitu conservation of the genetic diversity of cassava and sweet potato.
The main reasons that respondent farmers grew a particular variety of cassava or sweet
potato were the good taste (taste preference) and the earliness of harvesting age. But there
were also an indication that farmers grew a particular variety because it was common (known
for generations), the planting materials were available or because the farmers did not see otheroptions. This was supported by the fact that the farmers did not grow new high yielding
varieties because they were never available or accessible. Thus, the establishment of planting
material supply system for cassava and sweet potato, which are reproduced vegetatively, isneeded in Western Seram District. The farmers need to be assisted to grow cassava and sweet
potato varietes that are productive and with clear identities, in order to guarantee a highproductivity and in turn a better income.
Most farmers grew cassava and sweet potato just for their own consumption and only asmall portion was for sale. In spite of such farming conditions, according PESIRERON et al.
(2011) the average food crops in the Western Seram District were economically feasible
because they had Revenue/Cost (R/C) values > 1. Based on the results of the financial
analyses of R/C for cassava and sweet potato farming in the Western Seram District, thevalues of 1.93 and 1.30, were obtained respectively, which means they were feasible to be
cultivated by farmers in the region (PESIRERON et al. 2011).
Results of interviews with the farmers indicated that there were still many obstacles in
the cultivation of cassava and sweet potato, including the climatic factors, pests, especiallywild pigs (Sus scrofa), labor and marketing. The application of technological innovation on
the traditional farmers has been generally hindered by biophysical, sociological, technologicaland economic factors. The application of technology for cassava and sweet potato production
was still very limited in the study area. Therefore, it is very possible that increased
productivity can still be achieved through an effort of providing planting materials of superiorvarieties and various other agricultural inputs.
Diversity of cassava and sweet potato in the Western SeramIn situ characterization of cassava and sweet potato accessions in the farmers’ fields havebeen conducted using descriptors adapted from those of HUAMÁN (1991) and FUKUDA et al.
(2010). In this research, 105 accessions of cassava were obtained and collected from 8

58
RAHARJO Simon H. T., HETHARIE Helen, AUGUSTYN Gelora H. and PESIRERON Maritje

subdistricts, namely Inamosol, Kairatu, Kairatu Barat, West Seram, Hunamual Muka, Taniwel,
Taniwel Timur and Waesala. The highest cassava diversity in Western Seram District (in hilly
inland region) was found Inamosol subdistrict with 17 cassava accessions, followed by
Taniwel Timur Subdistrict with 15 accessions. The number of accessions found per sample
varied from 2 accessions (Kamarian and Kamal) to 12 accessions (Morekao).
Most of cassava accessions obtained (98 accessions or 93%) belong to the type that canbe consumed directly (sweet cassava, with low hydrogen cyanide [HCN] content). Only sevenaccessions belong to the bitter type (with high HCN content) which can not be consumed
directly without special processing, and one of them is considered to be very toxic cassava(Kasbi Galela). Based on the HCN content, cassava is classified into either sweet cassava,with a HCN content < 40 mg/kg of fresh roots, or bitter cassava with a HCN content ≥ 50
mg/kg of fresh roots. High HCN content can cause poisoning to human and animals, so
cassava with a high HCN content is not recommended for fresh consumption (SUNDARI 2010).
Most of the accessions obtained have white root flesh. Seventeen accessions (16.2%) haveyellow root flesh and 3 accessions (2.85%) have cream root flesh.
From the exploratory survei, 71 sweet potato accessions have been obtained andcollected from the 8 subdistricts. The highest sweet potato diversity was found also in
Inamosol Subdistrict with 18 accessions, followed by West Seram and Taniwel subdistricts
with 9 and 7 accessions, respectively.
The data described previously indicate that Western Seram District has high genetic
diversities of cassava and sweet potato, which also means that the region is rich of genetic
resources of both crops. The root crops have long been spread in the region, so that in the longterm this has enabled formation of many new genotypes probable through natural crossbreeding. The habits of farmers that do not use new superior varieties but rather use several
local varieties (landraces) simultaneously has allowed the in situ conservation of the diversityof these two crops. The genetic diversity is a very valuable source of genes that are importantfor breeding programs of the crops in the future.
Processing, utilization and home industry of cassava and sweet potato in Western Seram
Each family of the respondent farmers had an area of land for subsistence annual crops
and perennial trees that ranges from 0.25 to 2 ha. Cassava and sweet potato fresh products
were generally consumed by the farmers’ family or sold in a small scale. However, theirprocessed products were found to be limited. Communities in the study area, especially those
who have the main livelihood as farmers, consume cassava and sweet potato that have beengrown by themselves as staple food sources. They do not buy them in the market. In addition
to cassava and sweet potato, people also consume rice as a staple food eventhough they do not
grow rice. They buy rice with the money they obtain from sales of other agricultural products
or from other revenue.
Cassava and sweet potato can be consumed as a staple food because their storage roots
contain a high carbohydrate, which is 34.7 and 25.6 g/100 g of material, respectively. Cooked

59
Cassava and Sweet Potato in Western Seram, Maluku Province: Diversity, Cultivation and Utilizationroots of cassava and sweet potato are eaten with side dishes such as fish, meat and vegetables,
to improve nutritional values. In addition to the carbohydrate content, the storage roots also
contain protein, but not as much as rice. Their fat, vitamin A and vitamin C contents, however,are higher than those of rice. The calcium contents in cassava and sweet potato are evenhigher than rice, i.e., 33 and 27.7 mg/100 g, respectively, compared to 6 mg/100 g in rice.
The common daily meal composition of the community in Western Seram isroots/tubers/sago/rice-vegetables-fish/meats. The food composition consists of carbohydrates
as an energy source, proteins and fats from the fish/meats as well as vitamins and minerals
from the vegetables. In general, cassava and sweet potato, as well as vegetables, are obtained
from the farmers’ own gardens. Whereas fish or meat as a protein source are purchased or are
obtained from the sea or the forest. Cassava and sweet potato plays an important role as staple
food sources, especially in rural farming communities. In many other regions, cassava is an
important food for the farmers only in certain seasons when other foods are less available ormore expensive (FALCON et al. 1986). However, in most of Western Seram cassava along withthe other root and tuber crops are still the major and daily staple food sources, comparable tosago; and in some communities they are consumed greater and more often than rice. Thissuggests that in Western Seram, the community, especially the farmers, still maintain diverse
staple food sources other than rice. The consumption patterns in the study area thus provide asignificant contribution to better security of staple food supply and provision of balanced
nutrition for the community.
In addition to being consumed as a staple food, cassava and sweet potato are also cooked
into snack foods. A limited quantity of cassava is processed into processed products. Cassava
leaves are cooked as a vegetable. In all the study villages, the only common daily cooking
method of cassava and sweet potato for staple food is by boiling or steaming the fresh storage
roots. For production of snacks, cassava roots may be processed into fried snack, onde-ondeand lemet; whereas sweet potato roots are commonly prerpared by frying. Both may becooked into kolak, a sweet soup made from a mixture of tuber and plantain cubes with brownsugar and coconut milk.
In the food consumption system, diversification is an important aspect. The
diversification of processed cassava and sweet potato is one of the alternatives to support of
the food diversification program promoted by the government. Food diversification isintended to gain nutrient diversity as well as to free the community from dependency on one
particular type of staple food source, particularly rice. High dependency on a particular typeof food sources, such as rice, can lead to instability if the supply is interrupted. Based on thefindings, it can be stated that cassava and sweet potato play an important role for foodsecurity in Western Seram.
In Western Seram, cassava and sweet potato storage roots are generally consumed by thepeople as a staple food and only a small portion of them is processed into a variety of
traditionally processed products, either to meet their own need and for sale. Therefore, theutilization of cassava and sweet potato should be encouraged and developed further by

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RAHARJO Simon H. T., HETHARIE Helen, AUGUSTYN Gelora H. and PESIRERON Maritje

developing new and more modern products with a better nutritional value and with anapplication of food technology. Given the fact that cassava and sweet potato fresh storage
roots are perishable and their fresh conditions last only several days after harvesting, proper
handling and processing techniques should be applied to extend their shelf life. Cassava andsweet potato can also be upgraded into higher value food products. However, this study foundthat product processing of both comodities is rarely performed by Western Seram farmers,
because they lack capabiliy of agriculture product processing technology.
In the rural area, cassava and sweet potato can be processed directly into a variety of wet
and dry foods, and the resulting products can have a variety of flavors. One attempt topreserve the two commodities can be achieved by processing them into flour and the flour canbe processed further into a variety of interesting food products. Flour-making technology can
become a choice to be recommended to the farmers to produce a semi-finished product. The
flour is durable to store, easily blended, can be fortified, and can be cooked faster into various
foods, which is more suitable to the practical modern life (e.g., ANTARLINA 1998,
ONYENWOKE and SIMONYAN 2014).
Small business development goals in rural areas, among others, should be directed toincrease employment opportunities, especially to absorb labor in the agricultural sector, toincrease added values of agricultural products, and to increase incomes of the ruralcommunity. Therefore, agribusiness development program of production and utilization of
local crop resources, such as cassava and sweet potato, by developing food home industry
needs to be initiated by the government of Western Seram District.
Because cassava and sweet potato cultivation in Western Seram is generally a small-scale
activity, its upstream and downstream development efforts should be devoted to developing
small agribusinesses that is efficient and involves farmers’ family labors. To lift the economic
value of cassava and sweet potato, processing technology development as well as a goodmarketing strategy are needed, which in turn can improve the image of the root crops as
inferior food into widely accepted one. This will expectedly increase consumers’ acceptanceof cassava and sweet potato products. Efforts to increase the added value of cassava and sweet
potato through agro-industry can also play a role in supplying staple foods that are morediverse and with better qualities. Through the development of rural home agro-industry, thequantity of staple foods can be increased and the types of their products available in themarket will be more diverse.
Constrains faced by the farmers to develop downstream agribusiness include lack ofskills and mastery of post-harvest handling and product processing technology. Such
constrains affect farmers’ income which tends to be low. Another alternative to improve theincome of farmers is by developing product diversification. The cassava and sweet potato
fresh storage roots may be processed into refined products that can be stored longer, among
other into flour, starch, dried roots, chips and pellets. By this, the market of the commodities
is expected to be better guaranteed, their added values increased, and in turn well-being of the
farmers improved.

61
Cassava and Sweet Potato in Western Seram, Maluku Province: Diversity, Cultivation and Utilization

Conclusion
Conclusions from this research are as follows: 1) cassava and sweet potato are rarely
grown in a monoculture system in Western Seram, however, they are important crops in amixed farming system called kabong and dusun, 2) both play an important role as subsistencecrops and major sources of staple food, 3) farmers’ planting areas of cassava and sweet potato
are generally small (patches less than 0.25 ha) and only small portions of the whole lands
owned by the farmers, 4) their cultivations are traditional, low-input and low-technology ones
and long fallow cultivation is commonly practiced by the farmers to recover soil fertility, 5)
the genetic diversity of cassava and sweet potato in Western Seram is large, however,conservation, assessment and utilization of their germplasms are still very limited and 6) only
limited post-harvest processing of cassava and sweet potato products are applied.
Therefore, possibilities are still open: 1) to increase production in order to strengthen
their position as staple and security food sources, 2) to diversify their intermediate processed
products, such as dried cassava, chips, pellets and flour, to ease storing, transporting andmarketing and 3) to diversify and improve quality of foods based on both crops.

Acknowledgment
Research grant from MP3I (2012–2014) to Simon Raharjo and coworkers has enabled
this research to be conducted.

References
ALFONS, J. B. and WAMAER, D. 2015. Keragaman Karakter Morfologis dan Agronomis
Ubikayu Varietas Lokal Maluku (Morphological and Agronomic Diversities of Cassava
Local Varieties of Maluku). In: Prosiding Seminar Nasional Sumber Daya Genetik
Pertanian (Proceedings of the National Seminar on Agricultural Genetic Resouces) (Eds.
PRIYATNO, T. P., KURNIAWAN, H., HIDAYATUN, N., KOSMIATIN, M. and SURYADI, Y.),
160–168, IAARD Press, Indonesian Agency for Agricultural Research and Development,
Jakarta, Indonesia (in Indonesian).
ANTARLINA, S. S. 1998. Utilization of Sweet Potato Flour for Making Cookies and Cakes. In:
Research Accomplishment of Root Crops for Agricultural Development in Indonesia(Eds. HENDROATMODJO, K. H., WIDODO, Y., SUMARNO and GURITNO, B.), 127–132,
Research Institute for Legume and Tuber Crops, Malang, Indonesia.
BPS 2012. Maluku Dalam Angka 2012 (Maluku in Figures 2012), 569 pp., Central Board of
Statistics of Maluku, Ambon, Indonesia (in Indonesian).

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BPS 2014. Seram Bagian Barat Dalam Angka 2014 (Western Seram in Figures 2014), 342 pp.,
Central Board of Statistics of Western Seram, Piru, Indonesia (in Indonesian).
FALCON, W. P., JONES, W. O., PEARSON, S. R., DIXON, J. A., NELSON, G. C., ROCHE, F. C. and
UNNEVEHR, L. J. 1986. Ekonomi Ubikayu, Konsumsi (Cassava Economy, Consumption),
212 pp., Standford University Press bekerjasama dengan Penerbit Sinar Harapan, Jakarta,
Indonesia (in Indonesian).
FUKUDA, W. M. G., GUEVARA, C. L., KAWUKI, R. and FERGUSON, M. E. 2010. Selected
Morphological and Agronomic Descriptors for the Characterization of Cassava, 19 pp.,
International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria.
HUAMÁN, Z. 1991. Descriptor for Sweet Potato, 133 pp., CIP, AVRDC and IBPGR, Roma,
Italy.
HUKUNALA, E. 2010. Eksplorasi dan Karakterisasi Plasma Nutfah Ubi Jalar (Ipomoea
batatas (L.) Lam.) di Kecamatan Leksula, Kabupaten Buru Selatan (Exploration andCharacterization of Sweet Potato [Ipomoea batatas (L.) Lam.] Germplasm in Leksula
Subdistrict, South Buru District), Research Report, 57 pp., Faculty of Agriculture,
Pattimura University, Ambon, Indonesia (in Indonesian).
MAITIMU, M. 2008. Karakterisasi Plasma Nutfah Ubi Jalar (Ipomoea batatas (L.) Lam) di
Pulau Moa, Kecamatan Moa-Lakor, Kabupaten MalukuTenggara Barat(Characterization of Sweet Potato [Ipomoea batatas (L.) Lam.] in Moa Island,
Moa-Lakor Subdistrict, Western Southeast Maluku District), Research Report, 63 pp.,
Faculty of Agriculture, Pattimura University, Ambon, Indonesia (in Indonesian).
ONYENWOKE, C. A. and SIMONYAN, K. J. 2014. Cassava Post-Harvest Processing and Storagein Nigeria: A Review. African Journal of Agricultural Research, 9(53): 3853–3863.
PESIRERON, M., SENEWE, R. E., HUTUELY, L., SIRAPPA, M. P., ALFONS, J. B. and TITAHENA, M.
L. J. 2011. Road Map Komoditas Unggulan Tanaman Pangan di Kabupaten Seram
Bagian Barat (Roadmap of Priority Commodities of Food Crops in Western SeramDistrict), 77 pp., Maluku Agricultural Technology Assessment Board, Ambon, Indonesia(in Indonesian).
SUNDARI, T. 2010. Petunjuk Teknis, Pengenalan Varietas Unggul dan Teknik Budidaya Ubi
Kayu, Materi Pelatihan Agribisnis bagi KMPH (Guide, Superior Variety Identification
and Cultural Techniques of Cassava. Agribusiness Training Materials for KMPH),
Report No. 55. STE. Final, 12 pp., Research Center for Legumes and Root Crops,
Malang, Indonesia (in Indonesian).
SUSANTO, A. N. and BUSTAMAN, S. 2006. Data dan Informasi Sumberdaya Lahan untuk
Mendukung Pengembangan Agribisnis di Wilayah Kepulauan Provinsi Maluku (Dataand Information of Land Resource to Support Agribusiness in Archipelagic Region of the
Maluku Province), 73 pp., Maluku Agricultural Technology Assessment Board, Ambon,
Indonesia (in Indonesian).

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南太平洋海域調査研究報告
OCCASIONAL PAPERS

No.58（2017 年 3 月）
No.58（March 2017）

Production and Distribution of Potatoes
in the Kagoshima Island Areas
SAKAI Norio
Faculty of Agriculture, Kagoshima University

Abstract
Potato production is important in Japan, especially in island areas. Potato production and price haveincreased in the Kagoshima island area. The red soil on the islands allows the production of healthy looking
potatoes. Potatoes grown in island areas are produced during the mainland non-growing season and are soldas fresh potatoes.
Broadly, there are two types of potato collectors in the islands, Japan Agricultural Cooperatives andpurchase brokers, who compete with each other in terms of prices and services. Each collector plays a rolein the potato market.
Keywords: distribution, JA, Nagashima Island, Okinoerabujima Island, potato, purchase broker,
Tanegashima Island, Tokunoshima Island

Introduction
Potato varieties such as sweet potato, potato and taro are important crops in Japanese
agriculture and are grown in remote areas and island areas. Potato farmers face many
challenges in regards to potato cultivation and marketing. However, there are only a few
previous studies on potato production and distribution in island areas (IMURA et al. 2015,
SAKAI 2016, SAKAI and NAITOH 2016).
In the current paper, I describe the current state of potato production and distribution in
the island area of Kagoshima Prefecture.

Potato Production and the Preferences of Consumers Pertaining to Potatoes in Japan
Main potato production areas in Japan
Potato production is the highest among vegetable crops in Japan and is important not

64
SAKAI Norio

only for Japanese agriculture but also for Japanese consumers. The main prefectures that
produce potatoes are Hokkaido, Nagasaki and Kagoshima (Fig. 1, 2). These prefectures are
geographically distant from the main markets such as Tokyo and Osaka.
Hokkaido Prefecture
Hokkaido Prefecture accounted for 82.5% of potato production in Japan during 2014. In
Hokkaido, 44%, 24%, 14% and 18% of potatoes are grown for starch, food processing, foodapplications and seeds and other uses, respectively. Potatoes for use in food products are
harvested from summer to fall and are sold until April.
Nagasaki and Kagoshima prefectures
Nagasaki and Kagoshima prefectures produce potatoes for food applications and market
an image of fresh produce. Nagasaki Prefecture accounts for 4.4% of potato production in
Japan, with potatoes shipped from May to June. Kagoshima Prefecture yields 4.1% of total
potato production, and potatoes are shipped from January to May. Both prefectures ship fresh
potatoes during the period in which Hokkaido cannot ship fresh potatoes.
Preferences of consumers for potatoes in Japan
Japanese consumers value esthetically pleasing produce and show preference to potatoes
grown in red soil. Consequently, potatoes grown in red soil are the most expensive of all the
potato varieties.
In addition, different types of potatoes are used for different purposes. The round type of
potato is used for potato salad and croquettes due to its soft texture. The ellipse type potatoes
are used for boiled dishes and soup because this type does not disintegrate during cooking.

Ibaraki
1.7%
Kagoshima
4.1%

Chiba
1.2%

Others6.2%

Hokkaido

Nagasaki
4.4%

Nagasaki

Tokyo
Osaka

Kagoshima
Hokkaido
82.5%

Fig. 1. Potato production in Japan.

Fig. 2. Map of Japan.

65
Production and Distribution of Potatoes in the Kagoshima Island Areas

Potato Production in the Kagoshima Island Areas
Potato producing area in Kagoshima Prefecture has been increasing since the 1980s(Fig. 3). In Kagoshima Prefecture, potatoes are mainly grown in island areas (Fig. 4, Table 1).
The potatoes produced on islands are generally shipped to the mainland.
ha
5,000
4,500
4,000
3,500
3,000
2,500
2,000
1,500
1,000

0

1973
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
2000
01
02
03
04
05
06
07
08
09
10
11
12

500

year

Fig. 3. Potato planted area in Kagoshima Prefecture.

Table 1. Potato producing regions in Kagoshima Prefecture.

Fig. 4. Map of potato producing regionsin Kagoshima Prefecture.

Planted area
(ha)

Yield
(t)

HarvestingseasonTokunoshimaIsland338

6,820

Feb.-Apr.

Okinoerabujima
Island

1,052

14,780Feb.-Apr.

TanegashimaIsland193

4,063

Feb.-Apr.

South Osumi

253

5,450

Mar.-Apr.

NagashimaIsland1,130

27,100Apr.-May.

Others

1,444

33,487―

Kagoshima
Prefecture

4,410

91,700―

66
SAKAI Norio

During summer, it is difficult to grow vegetables in island areas because of strong
typhoons and drought. In addition, the remoteness of island potato production areas poses an
economic disadvantage because it is expensive and time-consuming to transport products off
the islands. Therefore, farmers grow sugarcane and rear beef cattle in summer.
In winter and spring, it is too cold to grow vegetables and flowers on the mainland inJapan. However, because the island areas remain warm, farmers grow vegetables and flowers
for the mainland. Because the soil type on islands is mainly red derived from coral limestone,
farmers can produce fresh red soil potatoes during winter and spring. Therefore, the price ofpotatoes produced on the islands of Kagoshima Prefecture is more than the average price ofpotatoes in Japan (Table 2). Consequently, potato sales constitute approximately 70% of thevegetable crop sales in the Amami Islands.

Table 2. The price of potatoes in Tokyo Central Market.
Japan
Shipment
quantity (t)Produced in Kagoshima
Price(JPY/kg)

Shipment
quantity (t)Price(JPY/kg)

2008

37,95098

10,312

141

2009
2010
2011
2012
2013
2014
2015

41,66242,01444,27645,75048,88948,82949,797

119
140
168
169
112
109
124

8,629
9,941
12,58914,424
14,281
15,055
11,339

160
205
233
157
110
144
211

Potato Distribution in the Kagoshima Island Areas
Potato distribution in the island areas is complex. Broadly, there are two types of potato
collectors in the island areas: Japan Agricultural Cooperatives (JAs) and purchase brokers,
who compete intensively with each other to collect potatoes.
JAs
JAs are large agricultural cooperatives, and almost every farmer in Japan is a member ofa JA. JA branches are widely distributed throughout Japan. In the island areas, JAs collectalmost half of the potatoes produced. Because every island contains a JA automatic potato
sorting facility, the potatoes collected by JAs are shipped to the mainland after being sorted on

67
Production and Distribution of Potatoes in the Kagoshima Island Areas

each island. JAs do not buy potatoes from farmers; they instead send the potatoes to market
and receive sales commission from farmers.
So as to avoid competition among the islands, JAs coordinate the varieties of potatoes
and shipping destinations. For example, on Tokunoshima Island, farmers mainly produce theround type of potatoes that are shipped to Nagoya, whereas Okinoerabujima Island produces
the non-round type of potatoes, which are shipped to the south of Osaka.
Because JAs collectively constitute a large organization, they are responsible for a stablesupply of potatoes to the wholesale markets. Therefore, JAs ships potatoes to markets as soon
as they are received. However, continuous rain can delay the shipping of potatoes to themainland. Because red soil is a hard clay type soil, farmers cannot harvest potatoes for a few
days after a rainfall event. The option of JAs constructing a potato storage facility on themainland is uneconomical because the facility would need to be huge and would only be usedduring monsoon.
Purchase brokers
There are approximately 5–20 brokers on each island. The brokers buy potatoes fromfarmers, which are then transported to the mainland. Brokers generally deal with relatively
small numbers of potatoes. Because brokers have no sorting facilities on the islands, they sortthe potatoes on the mainland. After sorting, brokers sell the potatoes to wholesalers or
retailers.
Brokers engage in price competition while buying potatoes from farmers. If one broker
buys at a high price, others have to raise their prices. However, there is no competition
between JAs and brokers regarding price, whereas they do compete with each other to provide
services to the farmers. Because JAs do not buy potatoes, competition with brokers relates toservices such as potato collecting, supplying harvesting labor, speedy payment to farmers andtechnical advice.
As mentioned above, because the business scale of brokers is relatively small compared
to JAs and that they are a private business, they can react rapidly to situations and behave
opportunistically. If the market price is too low, some brokers refuse to buy potatoes fromfarmers, which consequently place farmers in a difficult situation. Other brokers adopt a
strategy of buying potatoes at a low price and storing them in mainland facilities.
Subsequently, during periods of continuous rain when JAs cannot supply potatoes, the brokers
sell the stored potatoes to the markets at a high price. For wholesalers and retailers, brokers
are useful when there is a shortage of potatoes. However, the behavior of brokers cansometimes lead to price volatility.

68
SAKAI Norio

Future Problems
In the island areas of Kagoshima Prefecture, potato production and price haveexperienced continual increases. However, some problems that require solutions exist within
potato production. First, there is a shortage of potato harvesting labor on the islands; therefore,
securing laborers or the development of harvesting technology is an important issue for thecontinuation of potato production.
Second, potato consumption in Japan has been declining because of the decreasing andaging population and the greater participation of women in the workforce. The price ofpotatoes will decrease in future. To prevent price decline, efforts will be required todifferentiate the products and increase their added value.

Acknowledgement
This work was supported by JSPS KAKENHI Grant Number JP25450326.

References
IMURA, T., NAITOH, S., SUGIMURA, Y. and SAKAI, N. 2015. Shipment Action and the Choiceof Distributor of Potato Farmers in Okinoerabu Island. Agricultural Marketing Journal ofJapan, 24(1): 61–67 (in Japanese with English Summary).
SAKAI, N. 2016. Farming in South Kyushu and the Nansei Island: The Roles and Prospects of
Sweet Potato for Starch and Sugarcane. Japanese Journal of Food, Agricultural andResource Economics, 67(1): 11–20 (in Japanese with English Summary).
SAKAI, N. and NAITOH, S. 2016. The Characteristics of Taro Production and Shipment
Behavior of Farmers in Subtropical Small Island. Agricultural Marketing Journal ofJapan, 24(4): 39–45 (in Japanese with English Summary).

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南太平洋海域調査研究報告
OCCASIONAL PAPERS

No.58（2017 年 3 月）
No.58（March 2017）

Productivity of Nutmeg (Myristica spp.)
in Agroforestry System (Dusung) in Ambon Island
LEATEMIA J. Audrey, REHATTA Herman, ULUPUTTY M. Riadh and MAHULETE Asri S.
Faculty of Agriculture, Pattimura University

Abstract
Nutmeg is an icon of Maluku which has historic value in the world history of spice. However, theresearch on nutmeg in Maluku is still lacking. The objective of this study was to get the potency of nutmeg
in farmers’ plantation, cultivation and utilization of nutmeg by farmers, and kind of pests and diseases ofnutmeg in Ambon Island. The research was conducted in three districts which are the center of nutmeg
production in Ambon Island. Survey method with purposive sampling was used to determine village andfarmer samples. Data was collected through direct observation in the field as well as by interviewing
farmers. The result showed that nutmeg is cultivated in agroforestry system (dusung). The climate inresearch location is suitable for nutmeg growing and production. Productivity of nutmeg in Ambon Island
is consider low which were 0.58, 0.77 and 0.39 t/ha in Leihitu, Leihitu Barat and Salahutu districts,
respectively. Pests and diseases found in nutmeg plantation were stem borer, dry fruit rot, wet fruit rot, stem
cancer, curly top, die top and thread blight.
Keywords: agroforestry, diseases, pests, potential, spice

Introduction
Agriculture sector has an important role in Indonesia, not only as labor market for 42%
people but also as source of income especially for estate crop such as clove, nutmeg andcacao.
Nutmeg (Myristica spp.) is a spice that serves as source of farmer income, country
foreign exchange and supporting industrial. Nutmeg plant that has economic value is its fruit
which is consist of flesh (77.8%), mace (4%), kernel (5.1%) and seed (13.1%), and the mostvaluable parts are mace and seed that can be used to produce nutmeg oil.
Nutmeg is growing well in the tropical area of Asia, America and Africa. Nutmeg isclassified into family of Myristicaceae that consist of 15 genera and 250 species in which 5
genera found in the tropical area of America, 6 genera in Africa and 4 genera in the tropicalarea of Asia (RISMUNANDAR 1990). There are six species of nutmeg in Maluku, i.e., Myristicafragrans, M. argentea, M. fatua, M. specioga, M. sucedona and M. malabarica, with the mosteconomic value is M. fragrans (HADAD et al. 2006).

70
LEATEMIA J. Audrey, REHATTA Herman, ULUPUTTY M. Riadh and MAHULETE Asri S.

Based on historical review and fact in the field, M. fragrans is originally from the
Maluku Archipelago (the Banda Islands). Therefore, Maluku has an important role in theworld economy as a producer of high quality of nutmeg. However, the production of nutmeg
in this area is not optimal yet, because there are many problems faced by the farmer ranging
from cultivation technology to post-harvest processing problems.
Nutmeg is planted by almost all communities in Maluku. According to BPS (2013), themajority of population that most heavily cultivated nutmeg crop is resident of Central Maluku
as many as 9,580 households, followed by 6,542 of East Seram, 4,800 of West Seram, 1,557
of South Buru, while the other districts of less than 1,000 households.
Nutmeg farm in Maluku Province is mostly smallholder plantations and it tends toincrease from time to time (BPS 2013). The production and productivity (production/area of
productive tree) of nutmeg is also increasing over the past three years (0.34–0.54 t/ha; Table 1)
but they are considered to be still low. Low production and productivity of nutmeg are caused
by unsuitable seed used for cultivation, unused of fertilizer and uncontrolled pest and disease(HADAD et al. 2006).
Ambon Island is one of the areas that produce nutmeg in Maluku Province. In this area,nutmeg is cultivated traditionally by using a system called dusung. Dusung is traditional
knowledge practiced in Central Maluku including Ambon Island in which nutmeg is planted
together with other crops (agroforestry) (MATINAHORU 2014).
Pests and diseases in nutmeg plants highly influence the production; decline inproduction due to pests and diseases can reach 10–25% (SEMANGUN 2008).
As mention above, productivity of nutmeg is still low because the problems faced by
farmer range from cultivation system to post-harvest processing. Therefore, solution is needed
to improve the system in order to improve income of the nutmeg farmers.
The objective of this research was to get data on potential of nutmeg, to study thecultivation system and utilization pattern of nutmeg by farmer as well as to get data of pest
and disease of nutmeg plant in Ambon Island.

Methods
This research was conducted on July to November 2014 in three districts namely Leihitu,
West Leihitu and Salahutu of Central Maluku Regency in Ambon Island. Three villages ofeach district were purposively chosen as sampling areas because they are main producer ofnutmeg in Ambon Island.
Direct observations were done in the field as well as interviewing key respondents. The
number of key respondents for each village is 10% of the nutmeg farmers. Data collected
were field resources, variety of plant, cultivation techniques, indigenous knowledge, climate
conditions, plant pests and diseases, production and post-harvest handling. Secondary data

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Productivity of Nutmeg (Myristica spp.) in Agroforestry System (Dusung) in Ambon Island

Table 1. Area and production of nutmeg in Maluku during 2010 to 2012.
Year

Area (ha)2010Young tree
11,949Productive tree
6,635

Old tree
3,741

2011
2012

13,232
16,688

7,943
8,568

3,886
3,608

Production(t)

Productivity*(t/ha)

2,391

0.36

2,700
4,622

0.34
0.54

*productivity = production (t)/area of productive tree (ha)collected from related institution were statistics and agroclimate data as well as otherinformation relevant to the study.
Agroclimate data was analysed using formulas proposed by OLDEMAN (1977) for raining
probability, SCHMIDT and FERGUSON (1951) for climate clasification and OLDEMAN (1975) for
type of climate. Pest and disease were indentified in Plant Pest Laboratory and Plant Disease
Laboratory, Faculty of Agriculture, Pattimura University.

Results and Discussion
Climate aspect in nutmeg cultivation
Water is necessary by plants for photosynthesis, transpiration of mineral and product ofphotosynthesis, growth and transpiration. For estate crops, major water resource is rainywater.
In nutmeg cultivation area in Maluku (the Banda Islands), average of rainfall is 3,116mm/year with 215 rainy days. According to RIDLEY (1912), rainfall needed by nutmeg crop is
2,175 to 3,550 mm/year without any period of real drought. The more rainfall the higher
production per plant per month. In contrary, dry season causes decrease in production as wellas the quality of the seed. According to HADAD et al. (2006), nutmeg seed harvest in dry
season has lower germination rate compare to that in rainy season. Based on climate
suitability, RUHNAYAT and MARTINI (2015) stated that nutmeg crop is suitable to cultivate inarea with average rainfall of 2,000–4,500 mm/year. According to FLACH (1966), nutmeg crop
cultivated in flat land with low water holding capacity has potential in puddle which will
inhibit the growth of plants and susceptible to root rot disease if there is too much rainfall.
Rainfall in the research area is 1,692–4,231 mm/year with 153 to more than 223 rainy days,
and type of climate B (SCHMIDT and FERGUSON 1951) therefore the research area meets thecriteria of climatic suitability for the development of nutmeg.
Varieties of vegetation have been naturally selected to grow in different latitude andaltitude. At various latitudes and altitudes above sea level, there are different temperature andrainfall that would affect the lives of the various types of plants.
Relative humidity is related to the amount of water vapor in the air and it depends on air

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LEATEMIA J. Audrey, REHATTA Herman, ULUPUTTY M. Riadh and MAHULETE Asri S.

temperature as well as air pressure. Therefore, temperature is linearly correlated to relative
humidity. In general, air temperature and relative humidity is directly related to plant growth,
as well as to development of plant pests and diseases. In the research area (Ambon Island)
average temperature annually is 26.5°C, according to HADAD et al. (2006), optimal
temperature for nutmeg growth is 25–30°C.
In Moluccas, nutmeg and clove crops distribution are found on 0–700 m above sea level.
Nutmeg cultivated in more than 700 m above sea level will have low production due to highrelative humidity that good for plant pathogen (fungus) to grow. Therefore, nutmeg is suitable
to be cultivated on area less than 700 m above sea level (LEE 1957). In Banda Island, nutmeg
is grown from the coastal to area of 458 m above sea level.
Wind has a role in moving heat, water vapor and CO2 between the surrounding air andthe plant, especially the leaves. In relation to nutmeg cultivation, wind speed and direction
should be taking into account since strong wind can cause damage to crops, flowers and/or
fruit fall. In area with strong wind, the speed could be reduced using compact wind barrier orother plant. For example, in most of nutmeg plantation in Banda Island, walnut (canary) tree
are being used as wind breaker that protects nutmeg tree from the sea wind. Wind direction is
also important in spreading of fungus spore and migration of certain plant pests.
Cultivation system of nutmeg in Ambon Island
Farmers in the districts of Leihitu, West Leihitu and Salahutu cultivate nutmeg on theirown land by using the system called dusung mixed with other crops. Nutmegs were planted
from flatland up to the hill with the gradient > 45% and canopy of 80% in the area of 0.5 to
4.0 ha. Nutmegs are harvested 3 times a year in March–April, July–August andNovember–December with the peak on March to April. Description on the number of plant,
production and productivity of nutmeg in three districts are presented in Table 2.
It can be seen in Table 2 that productivity (production [t]/area of productive tree [ha]) ofnutmeg is low due to limited cultivation system. Land used for nutmeg cultivation is also
planted with other vegetation in order to protect nutmeg plants. Those plants are durian,albizia, walnuts (canary), gayam, mangosteen, mango, lenggua, teak and resin (upper stratum),clove, langsat, jackfruit, guava, coconut, betel nut, palm, cocoa, avocado (mid stratum) andbanana, papaya, cassava, yam, pineapple, soursop (lower stratum).
In nutmeg cultivation, farmers has not used fertilizer and pesticide and the tools thatbeen used only hoe, knife and crowbar. Sanitation of the plantation has not been done properly,
and only been done once every 6 months, therefore there were some plant pests and diseases.
Very limited and simple cultivation techniques caused low productivity of plant.
In addition, low productivity was also caused by lack of knowledge of the farmers todifferentiate between female and male plants. The best ratio for male and female is 1:8, but
fact in the field shows that farmer cultivated more male than female plants.
Based on field observation, it is found that there are three species in the study area in

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Productivity of Nutmeg (Myristica spp.) in Agroforestry System (Dusung) in Ambon Island

which two are cultivated, i.e., Myristica fragrans and M. argentea and the other is wild
nutmeg, M. fatua (Fig. 2).
Mature nutmeg fruits (6–7 months old) are harvested by using long stick. The mostvaluable parts of the fruit are seed and mace while most of the fruit flesh are discarded andjust a little are kept to produce nutmeg syrup such as observed in Morela Village. Sun-dryingof seeds usually takes 3–5 days while for mace just one day (Fig. 3). In the rainy season, seed
and mace are smoked.
Table 2. Number of tree, production and productivity of nutmeg in Leihitu, West Leihitu and Salahutu
districts in Central Maluku Regency.
Number of tree*
Production
District
Village
Total
Productivity**
(t)
YT
PT
OT/DOT
Morella
8,869
7,127
2,340
18,33628
0.61
Mamala
5,627
5,760
1,960
13,34723
0.62
Leihitu
Hila
5,151
4,827
1,763
11,741
14
0.45
Mean
6,549
5,905
2,021
14,475
22
0.58
Alang
21,80029,291
3,409
54,500167
0.89
Lilibooy
4,545
9,810
789
14,14443
0.68West Leihitu
Hatu
5,654
20,3902,500
28,54497
0.74
Mean
10,666
19,8302,233
32,396
102
0.77
Liang
2,620
20,1491,989
24,75849
0.38
Tengah Tengah
5,669
26,2353,457
35.36170
0.42
Salahutu
Tial
4,060
17,1101,740
22,910
41
0.37
Mean
4,116
21,1652,395
15,90153
0.39*: YT=young tree, PT= productive tree, OT=old tree and DOT=damaged old tree.
**: It is assumed that there are 156 trees in 1 ha based on tree spacing.

A

B

C

Fig. 2. Myristica fragrans (A), M. argantea (B) and M. fatua (C).

Fig. 3. Harvesting and post-harvesting handling of nutmeg.

74
LEATEMIA J. Audrey, REHATTA Herman, ULUPUTTY M. Riadh and MAHULETE Asri S.

In relation to harvesting, there is a traditional community based management in Ambon
Island called sasi. Sasi system refers to temporal prohibition on particular resources, e.g.,nutmeg and when it is applied (tutup sasi closed season), no usage whatsoever is permitted
until the sasi is lifted (buka sasi opened season). Violation of the sasi system will cause
punishment or fine for the violators. Sasi system for nutmeg is still practiced in the villages ofMamala, Morela (Leihitu District) and Allang (West Lihitu District). Through sasi, we can get
the best quality of nutmeg fruit because it is harvested in condition of physiologically mature.
Pests and diseases
Many pests and diseases were found during the study in all study areas (Table 3). As
mentioned earlier, very limited cultivation techniques were used by farmers. Pest and disease
control was not done intensively due to lack of knowledge of the farmers. Sanitation was notbeen done properly, it was only done twice a year usually before harvesting. The trees that
had been damaged by pests and diseases were left in the field so they become the source ofTable 3. Diseases and pests found in the study area.
District

Leihitu

DiseaseStem cancer (Phytophthora palmivora )Curly top
Dry fuit rot (Stigmina myristicae )Thread blight (Marasmius sp.)
Wet fruit rot (Colletotrichum gloeosporioides )Plant parasite
Upasia salmonico

Curly top
Stem cancer (Phytophthora palmivora )Thread blight (Marasmius sp.)
Die topWest Leihitu Red Algae
Dry fuit rot (Stigmina myristicae )Wet fruit rot (Colletotrichum gloeosporioides )Leave Spot
Cracking of young fruit
Thread Blight (Marasmius sp.)
Stem cancer (Phytophthora palmivora )Salahutu

Pest
Stem borer (Batocera sp.)
Termites

Curly top
Dry fuit rot (Stigmina myristicae )Wet fruit rot (Colletotrichum gloeosporioides )Plant parasite
Die top

Stem borer (Batocera sp.)
Termites

Stem borer (Batocera sp.)
Termites

75
Productivity of Nutmeg (Myristica spp.) in Agroforestry System (Dusung) in Ambon Island

inoculum to healthy trees. In most of plantations, the upper stratum trees (durian, albizia,
canary, mangosteen etc.) occupied the upper canopy and covered the nutmeg and other mid
stratum trees. Therefore, they can hinder the sunlight to go through and can cause highhumidity in the field which in turn can support the development of the diseases.

Conclusion
Based on the study, it can be concluded that: 1) nutmeg in Ambon Island has a great
potential to be developed because climate and physical condition support its growing andproduction, 2) productivity of nutmeg is low (0.37–0.89 t/ha) due to the non-optimal
cultivation system, 3) the unsuitable ratio of male and female trees in the field can cause low
productivity and 4) pests and diseases that found are similar among the study areas.
Therefore, improvement of cultivation system including sanitation of plantation, pest anddisease control as well as the settings of male and female trees ratio by providing female trees
need to be done in order to improve productivity of nutmeg in the area.

Acknowledgement
We would like to thank Directorate of Higher Education, Ministry of ResearchTechnology and Higher Education for funding this research through UPT Research Grant(2014–2015).

References
BPS 2013. Maluku dalam Angka 2013 (Maluku in Figures 2013), 616 pp., Central Board of
Statistics of Maluku, Ambon, Maluku, Indonesia (in Indonesian).
FLACH, M. 1966. Nutmeg Cultivation and Its Sex Problem. Meded. Landbouwhogeschool
Wageningen, 66(1): 1–87.
HADAD, M. E. A., RANDRIANI, E., FIRMAN, C. and SUGANDI, T. 2006. Budidaya Tanaman
Pala (Cultivation of Nutmeg Crop), 28 pp., Balai Penelitian Tanaman Rempah dan
Aneka Tanaman Industri, Parungkuda, Indonesia (in Indonesian).
LEE, D. H. K. 1957. Climate and Economic Development in the Tropics, 182 pp., Harper andBrother, New York, USA.
MATINAHORU, J. M. 2014. A Review on Dusun as an Indigenous Agroforestry System
Practiced in Small Islands. Occasional Papers (Kagoshima University Research Centerfor the Pacific Islands), 54: 53–60.

76
LEATEMIA J. Audrey, REHATTA Herman, ULUPUTTY M. Riadh and MAHULETE Asri S.

OLDEMAN, L. R. 1975. An Agro-Climatic Map of Java, 20 pp., Central Research Institute for
Agriculture, Bogor, Indonesia.
OLDEMAN, L. R. 1977. Climate of Indonesia. International Proceeding of the Sixth Asian
Pacific Weed Science Society Conference, Vol. 1, 14–30, Jakarta, Indonesia, 11–17 July,
1977.
RIDLEY, H. N. 1912. Spices, 449 pp., MacMillan and Co. Ltd., St. Martin’s Street, London,UK.
RISMUNANDAR 1990. Budidaya dan Tata Niaga Pala (Cultivation and Trade of Nutmeg),
Second Edition, 130 pp., PT. Penabur Swadaya, Jakarta, Indonesia (in Indonesian).
RUHNAYAT, A. and MARTINI, E. 2015. Pedoman Budidaya Pala pada Kebun Campuran(Handbook of Cultivation of Nutmeg in Mixed Plantation), 80 pp., Balai Penelitian
Tanaman Rempah dan Obat & AGFOR Sulawesi, Makassar, Indonesia (in Indonesian).
SCHMIDT, F. H. and FERGUSON, J. H. A. 1951. Rainfall Types Based on Wet and Dry Period
Ratios for Indonesia with Western New Guinea, Verhandelingen Djawatan Meteorologi
dan Geofisik, No. 42, 77 pp., Ministry of Meteorology and Geophysics, Jakarta,
Indonesia.
SEMANGUN, H. 2000. Penyakit-Penyakit Tanaman Perkebunan di Indonesi (Diseases of Estate
Crops in Indonesia), 808 pp., Gadjah Mada University Press, Yogyakarta, Indonesia (inIndonesian).

77
南太平洋海域調査研究報告
OCCASIONAL PAPERS

No.58（2017 年 3 月）
No.58（March 2017）

A Newly Invasive Long-Horned Beetle from Mainland
Kyushu Attacks Citrus Trees in the Amami Islands
SAKAMAKI Yositaka, TSUDA Katsuo and MIYAKE Masataka
Faculty of Agriculture, Kagoshima University

Abstract
In the Amami Islands many kinds of citrus have been introduced from continental China and Taiwan.
As there are few indigenous insect pests, introduced citrus species have been well-kept and have diversified
in Kikaijima, Tokunoshima and Okinoerabujima islands. As a result, we can now find a plentiful variety of
citruses in home yards in these areas. About 2008, however, many of the trees appeared to weaken and thendied over the course of one or two years. The problem spread rapidly. For example, in one village in Kikai
Island the total number of citrus trees drastically decreased from 2,800 to 2,000 over a period of four years.
These dead trees had many distinct 2cm-circular exit holes of long-horned beetle at ground level. The
islands have long been home to a type of long-horned beetle, Anoplophora oshimana, that had neverattacked citrus trees. From 2011, we started to simultaneously examine the species of long-horned beetlesin the citrus orchards and to conduct new control strategy against the beetles. The new strategy involves awide-area application of biopesticide band, Beauveria bassiana, Bio-Lisa®, conducted in theabovementioned village. It took three years to decrease long-horned beetle numbers by 90%. DNA analysis
revealed that the long-horned beetle in the orchards was hybrid population between A. oshimana and A.
malasiaca. Anoplophora malasiaca is a notorious pest of citrus trees in main island Japan. We estimate thatthe latter long-horned beetle established itself in the islands before 2008 and hybridized with the endemic
long-horned beetle.
Keywords: Anoplophora malasiaca, A. oshimana, biopesticide band, DNA analysis, hybrid population

Introduction
The history of citrus cultivation on the Amami Islands, which include Amami-Oshima I.,
Kikaijima I., Okinoerabujima I., Tokunoshima I. and Yoron I., is ancient. The people living onthese islands have cultivated many types of citrus trees from China and mainland Japan, butsports and natural hybrids of these citrus trees have been cultivated and handed down within
individual homes for centuries. Consequently, each farmer has unique cultivars of citrus in his
orchard or residential yard, which can be considered valuable genetic resources (YAMAMOTO
et al. 2006). For example, in two local citrus cultivars on Kikaijima I. (Citrus keraji and C.
keraji var. kabuchii), the polymethoxy flavone content of the juice is four-fold higher than

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SAKAMAKI Yositaka, TSUDA Katsuo and MIYAKE Masataka

that of satsuma mandarin (Citrus unshu), and these local citruses are considered to be a goodsource of phytonutrients (YAMATOMO et al. 2008). Few studies have examined thephytonutrients in local citruses from the Amami Islands or examined the cultivars from theislands in detail. YAMAMOTO et al. (2006) reported that severe citrus damage caused by the
citrus long-horned beetle on Kikaijima and Tokunoshima islands is worsening and becoming
a serious threat to local citrus cultivation. In this report, we interviewed people living on theislands who have experienced citrus damage caused by the long-horned beetle to confirm
YAMAMOTO’s report. Second, we assessed the damage status in 2011 and began to control the
long-horned beetle in an experimental model village in Kikaijima in 2012. Here, we provide
an interim report of these actions to protect local citruses against long-horned beetle damage
and discuss the future of these control methods to conserve local citrus populations.
The citrus long-horned beetle, Anoplophora malasiaca, is one of the well-known
wood-boring species of the family Cerambycidae that is distributed across mainland Japan.
This species usually attack many types of hardwood trees, as well as citrus trees, willow,
poplar, walnut, ficus, sycamore, rose, pear, peach and winter hazel (HAYASHI 1984,
MAKIHARA 2007). The closely related species Anoplophora oshimana, which is distributed
across Amami-Oshima, Okinoerabujima, Tokunoshima, Okinawajima, Ishigakijima andIriomotejima islands, is also known to have a broad spectrum of host plants (HAYASHI 1984,
MAKIHARA 2007), but it is thought to prefer winter hazel over citrus; thus, A. oshimana is notcommonly regarded as an insect pest for citrus cultivation on these islands.
We tried to interview a number of citrus farmers and local government officials from
Kikaijima I. regarding citrus damage caused by the long-horned beetle in 2011–2012. They
stated that a severe outbreak of the beetle started about 10 years ago and that the damage was
obvious from 2006–2008. Another farmer that observed damage more than 10 years ago
answered that the beetle rarely attacked citrus trees, but did observe damage to winter hazel
trees used as a windbreak in orchards. In the area one official had been aware a phenomenon
where white spots pattern on back of the long-horned beetle changed from yellowish tobluish-white was reported on Amami-Oshima I. (MAKIHARA 2007), which suggests that thenative A. oshimana, which has yellowish white spots, was replaced by A. malasiaca, which
has bluish white spots, originating from mainland Japan, Kyushu, Shikoku and Honshu
islands.

Example of Decreased Citrus Trees in a Village on Kikaijima I.
Oasato-Nishime is a small village (approximately 25 ha) in the center of Kikaijima I.
There are fewer than 100 houses in the village, and half of the houses are empty. In the village,a tree suffering from citrus greening disease (Citrus Huang-Long-Bin) was first observed in
December 2003. Since this was the first record of the disease on the island and some
additional trees suffering from the disease were found in the village, all citrus trees cultivatedand present (about 2,800 trees in total) were counted, identified, numbered and mapped using

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A Newly Invasive Long-Horned Beetle from Mainland Kyushu Attacks Citrus Trees in the Amami Islands

a GIS system by the local government of Kikai Town in 2005 as part of a citrus greening
disease eradication program. Using this map, a mortality survey of all citrus trees in thevillage was traceable. Thus, we traced the change in number of citrus trees in the village using
the map and numbering system. Additionally, fewer than ten trees were felled by citrus
greening disease after 2005.
The change in number of citrus trees in the village during 2006–2008, which decreasedslightly but was generally stable, was about 2,800. The number of trees then decreased to2,600 by the end of 2006 and to 2,500 by 2010. Only 1,600 trees were thicker than about 2 cm
in diameter, meaning we could use a microbial insecticide containing Beauveria brongniartii(Biolisa Kamikiri Slim®; Idemitsu Kosan Co. Ltd., Tokyo, Japan). When we establishedcontrol of the long-horned beetle using this microbial insecticide, we excluded trees narrower
than 2 cm in diameter to reduce the use of the expensive insecticide and the labor required to
set the control measures. In addition, we did not count the number of narrow trees. If weassume that the trees we excluded accounted for approximately 20% of the citrus trees in thevillage, the total number of citrus trees would be decreased to about 2,000 (Fig. 1). In thiscase, the village lost 1/3rd of the trees over four years.

Choice of a Suitable Control Method
We avoided using chemical insecticides to control the long-horned beetle because thevillage has a water well that many people living in adjacent villages use, and we had toconserve the village’s insect fauna, which was damaged by a chemical insecticide used tocontrol an insect vector of citrus greening disease during 2004–2008.

Total number of citrus trees

3000

2500

2000

Ohasato-Nishime

village
1500

2006

2007

2008

2009

2010

2011

2012

Fig. 1. Change of the number of citrus trees in Oasato-Nishime Village of Kikai Town, 2006–2008. The
Oasato-Nishime Village lost 1/3rd of citrus trees from 2008 to 2011.

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SAKAMAKI Yositaka, TSUDA Katsuo and MIYAKE Masataka

Alternatively, we chose a microbial insecticide (Biolisa Kamikiri Slim®), which consistsof a non-woven fiber band impregnated with a fungus (B. brongniartii) to control the beetleon citrus trees. The reason we chose this particular microbial insecticide is that the fungal
strain originated from Japan, ensuring that the fungus would die in the local environment.
Thus, the use of microbial agents to control the long-horned beetle is one form ofenvironmental load-reducing control.
However, the microbial band takes 10 days to kill an adult beetle, so the female beetle
can still lay a portion of her eggs. Since the longevity of an adult female is typically 2–3
months, the fungus can reduce the beetle longevity time to 1/9th to 1/6th if the fungus infects
just after emergence.
Since the female beetle typically has 200–300 eggs in her ovary and the preoviposition
period of the beetle is 7–15 days, a female exposed to the insecticide just after emergence will
lay few eggs. The fungal infection rate using the microbial band is approximately 1 month.
Therefore, an effective technique for setting the microbial band is to fasten it to an infected
tree at about 40 cm above the ground during the onset of the adult emergence season.
An efficacy report on the microbial band from Okinawajima I. (KYUSHU AGRICULTURE
PROMOTION COUNCIL 1994) stated that 50–100% of adult beetles captured in experimental
orchards (about 11–15 ha) containing the microbial band were infected by B. brongniartii, but
the larvae boring into the citrus tree did not decrease during the later season. Consequently,
the report concluded that control by the band was limited on Okinawajima I. because thesubtropical island has more essential host tree species adjacent to the forest than mainland
Japan. The report estimated that many non-infected females invaded from surrounding forestsand deposited eggs within the experimental orchard (Fig. 2). The report did not perform a trialof the band on the other islands in the Okinawa Islands and their adjacent Amami Islands, andpeople living in the isolated island area have abandoned use of the band. Since Kikaijima I.
belongs to the Amami Islands, whose climate is subtropical and similar to that on
Okinawajima I., a similar phenomenon may occur if we set the band in some citrus orchards.
To avoid similar failures, we set a microbial band on all citrus trees in the village (about 25ha). Using this widespread approach, we hoped to determine the actual efficacy of the
microbial band (at least in the central area of the village). It may be possible to identify
invader females at the edge of the setting village to decrease the likelihood of invader females
reaching the central area of the village.

An Effect of Wide-Area Control by an Entomopathogenic Fungal Pesticide
During our first visit, we observed that many residents were unaware of the correlation
between citrus tree damage and the citrus long-horned beetle. We first distributed a leaflet to
all residents of Kikaijima I. to discuss the correlation between citrus damage and thelong-horned beetle, the life cycle of the long-horned beetle, the morphology of the beetle at all
developmental stages (egg, larva, pupa and adult) and control methods. Simultaneously, we

81
A Newly Invasive Long-Horned Beetle from Mainland Kyushu Attacks Citrus Trees in the Amami Islands

Fig. 2. Schematic comparison of environmental conditions for setting the microbial band between mainland
Japan and subtropical isolated islands (Okinawa, Amami).

held a meeting to explain the long-horned beetle control method using the microbial band and
we identified participants to set bands the next day in the Oasato-Nishime. These actions
increased the residents’ awareness of control of the citrus long-horned beetle.
When we set the microbial bands in May 2012 and in May and June 2013, more than ten
residents participated. Since they knew the position of every citrus tree, setting the bands on
more than 1,500 trees only took half a day. The infection rate of B. brongniartii in the wild
beetle at 2 weeks after setting the bands was more than 70% in May and June 2013 (MIYAKE
et al. unpublished data). This indicated that most of the female beetles that emerged in thevillage could lay few or no eggs and died. In autumn, when the damage caused by larvae
became visible, we searched for freshly damaged trees and counted the number of damage
signs by larvae, which exhausted frass like sawdust. The larval density, which was calculated
based on the number of damage signs, was 1.3 larvae/citrus tree before setting the bands in
2011, but was 0.11 larvae/tree at 2 years after setting the bands (in 2013; MIYAKE et al.
unpublished data). Thus, we were able to achieve high efficacy for the control of long-horned
beetle larvae. This control efficacy was completely different from that on Okinawajima I.
(KYUSHU AGRICULTURE PROMOTION COUNCIL 1994). This may be because we set the
microbial bands in a larger area than on Okinawajima I. (i.e., broader effect).
These results suggest that microbial band control can be extremely useful in isolatedisland areas if people use this approach with considering a broader effect. Unfortunately,
during our 2-year survey 30% of the fixed observation trees (n=108) died. To protect thecitrus trees throughout Kikaijima I., we need to rapidly expand the treatment area.

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SAKAMAKI Yositaka, TSUDA Katsuo and MIYAKE Masataka

DNA Analyses of the Citrus Long-Horned Beetle in Kikaijima I.
We conducted DNA analyses of Mitochondrial COI region (about 800 bp) and nuclear
ITS2 region (about 500 bp) of the long-horned beetle from Kikaijima I. The COI sequences of
those samples were similar to the sequence of Anoprophora oshimana, but the ITS2 sequence
were intermediate status between A. malasiaca and A. oshimana. These results must explain
as introgressive hybridization of the citrus long-horned beetle inhabit in Kikaijima I. by A.
malasiaca’s gene.

References
HAYASHI, M. 1984. Cerambycidae. In: The Coleoptera of Japan in Color, Vol. 4 (Eds.
HAYASHI, M., MORIMOTO, K. and KIMOTO, S.), 1–146, Hoikusha Pub. Co. Ltd., Osaka,
Japan (in Japanese).
KYUSHU AGRICULTURE PROMOTION COUNCIL 1994. Establishment of Biological Control ofLonghorned Beetles on Endemically Special Fruit Trees by Entomopathogenic Fungi.
Study Report of Important New Techniques in Kyushu District Series No. 22, 97 pp.,
Kagoshima Fruit Tree Experimental Station, Tarumizu City, Japan (in Japanese).
MAKIHARA, H. 2007. Lamiini. In: Longicorn Beetle of Japan (Eds. OHBAYASHI, N. and
NIISATO, T.), 576–605, Tokai University Press, Hadano, Kanagawa, Japan (in Japanese).
YAMAMOTO, M., MATSUMOTO, R., UECHI, Y., IJICHI, T., KUBO, T. and TOMINAGA, S. 2008.
The Polymethoxy Flavones Content of Local Citrus Accessions on the Island of
Kikaijima in Kagoshima Prefecture, Japan. Bulletin of the Faculty of Agriculture,
Kagoshima University, 58: 1–7 (in Japanese with English Summary).
YAMAMOTO, M., MATSUSHIMA, K., IJICHI, T., UECHI, Y., KAWAGUCHI, S., NAKANO, H.,
NOMURA, T., TANIMURA, O., KUBO, T. and TOMINAGA, S. 2006. Exploration and
Preservation of Local Citrus Germplasms in the Amami Archipelago. Bulletin of theExperimental Farm, Faculty of Agriculture, Kagoshima University, 29: 5–11 (in Japanesewith English Summary).

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南太平洋海域調査研究報告
OCCASIONAL PAPERS

No.58（2017 年 3 月）
No.58（March 2017）

Design and Application of Unsinkable Tuna Longboat
for Local Fishermen
HETHARIA Wolter R. and METEKOHY Obed
Faculty of Engineering, Pattimura University

Abstract
The activities of fishermen in archipelago regions (Eastern Indonesia and Pacific) mostly relate to theefforts in catching fishes and other marine resources. One of the most valuable fish is Tuna which is caught
by simple up to modern big vessels and fishing gears. Most Moluccas fishermen are using small “tunalongboats” for this purpose. Those small boats operate in open seas where most of the time the sea
conditions are rough. In many cases, those small boats could not resist in such conditions which will end-up
with flooding, capsizing or sinking. Some records showed the fishermen and boats are lost at sea. A study
was executed to solve this problem. Three new tuna long boats, with the size of 1.5 GT each, were designed.
Those boats were provided with solid boxes inside to provide reserve buoyancy. The boats wereconstructed with the material of composite (Fibre Glass Reinforced Plastic). Then, the boats were tested atsea. The results of test showed that for a maximum flooding of boats, they still float (unsinkable) with aminimum trim level. In addition, for a capsize condition, they were still afloat and easily were returned to
upright position. The results of boat design and evaluating were recommended to be applied to the users. A
training program was conducted for the local boat builders during the study. Nowadays, the local boat
builders have developed this unsinkable concept to their new boats into the market.
Keywords: Fibre Glass Reinforced Plastic (FRP), reserve buoyancy, solid boxes, training program

Introduction
Eastern Indonesian waters as well as some Pacific regions have great potential of marine
products, particularly tuna fish. This kind of fish has a valuable selling price in theinternational markets. Tuna fishes are caugth in some fishing grounds in Eastern Indonesianand Pacific waters. They are caugth by using some simple up to modern vessels with fishinggears. Local fishermen, especially in Moluccas, are using small boat, called “tuna longboat”
with the capacity of 1.5 GT. The boat is operated by two fishermen where they use the fishinggears of hand or trolling lines. The fishing grounds are in open waters with some rough sea
conditions. At certain periods, there are strong winds with big waves. The operation of thosesmall boats in such rough waters is not possible. Some accidents occurred where the boats
were flooded, capsized and sinked. The fishermen lost their life at sea. The boats were

84
HETHARIA Wolter R. and METEKOHY Obeddesigned and constructed by local boat builders without paying any attentions of boat designconcept. The design process were only based on traditional experiences where this issue lasts
for long time. Such small boats were constructed with the material of wood or Fibre Glass
Reinforced Plastic (FRP).
A study was conducted to find the solutions. New boat configuration was introduced inthis study. A team of design and construction of small fishing boat, Faculty of Engineering,
Pattimura University was responsible for this work. Three boats (hull material of FRP), withthe size of 1.5 GT each, were designed and constructed based on proper ship design concept.
Those boats were provided with some solid boxes inside. The configuration and dimensionsof solid boxes were calculated and distributed properly along the boats. Furthermore, theboats were tested at sea for floating purpose. At the test, the boats were filled with sea water
into all compartments inside. It was found that the boats were still afloat at certain draft. In
addition, the boats were capsized at an upside-down position. It was found also that the boats
were still afloat at certain condition and easily to be turned into their initial upright position.

Boat Design and Construction
Design of a boat should be based on some requirements, design considerations andfollowing the whole design process (TAGGART 1983). In this case, design consideration is theboat ability to afloat on upright or even in capcized positions. In addition, a consideration ofboat operation and environmental conditions would end up with a boat configuration. Other
considerations are based on the requirements of small fishing boat with a certain cathingtarget. The boat was also designed to fulfill the requirements as a fishing boat (FYSON 1985).
Some input design parameters should be determined to be included in the design process.
Fishing gears were choosen properly to be fixed in this small fishing boat (HETHARIA et al.
2001, HETHARIA et al. 2003). The design process ended up with boat dimensions, geometricalhull forms, structures, general arrangements and other design parameters. In addition, blue
prints are included for construction phase.
To keep a boat afloats on its upright position at designed waterline, a certain reservebuoyancy is required. A relationship of total boat weight should be the same as boat weightdisplacement and is presented as (LEWIS 1988, RAWSON and TUPPER 1984):
Total weight = ∆, (t)
and
∆=Vxγ
(1)
Total weight = lightweight (LWT) + deadweight (DWT)(2)
where: ∆ = weight displacement (t)V = volume displacement (m3)γ = specific weight of sea water (t/m3)
LWT = lightweight = boat hull+engine+ equipments.
DWT = deadweight = cargo (fish and ice) + crews + fuel + lugages + fishinggears + live bait fishes.

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Design and Application of Unsinkable Tuna Longboat for Local Fishermen

For a critical condition, cargo is considered as water that fills all compartments in boat.
(3)

Cargo = Wtotal water

In this study, some solid-closed boxes (with foam inside) were provided inside the boat
in order to reduce total water weight or to keep the boat still afloat. On the other hand, theinside solid boxes provide the buoyancy forces when the boat is in the capsized condition.
This will make the boat afloat at capsized condition.
In addition, a distribution of closed boxes along the boat were arranged in order to obtaina proper longintudinal centre of gravity (LCG) which aproaches the position of longintudinal
centre of buoyancy (LCB).
LCG =
LCB

(4)

When the boat is in capsized condition, the relationship of volume below should be met:
Vboat = Vhull sheel + structures + Vsolid boxes(5)

In the case where the boat still afloat at the upright or capziced positions then thequantity of inside solid boxes should be provided to meet Archimedes’ principle of floating
subject. Besides, the location of LCG should be as close as LCB to ensure the boat would not
be in excessive trim condition.
The hull material of FRP was applied for the boats. The construction of boats were basedon the procedure of using FRP (reffered to “Marine Design Manual for Fiberglass Reinforced
Plastic”). The boats were constructed at the Faculty of Engineering, Pattimura University,
Ambon, Moluccas. The boats were constructed as prototype for evaluating their performanceat sea (HETHARIA 2008). Three boats (similar configurations) were constructed based on theparameters of output design. All boats have the same size which was 1.5 GT. They were Fatek
08, Barracuda and Yellow Fin, as seen in Fig. 1. The boat dimensions and output design
parameters are presented in Table 1.

Fig. 1. Tuna longboats 1.5 GT.

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HETHARIA Wolter R. and METEKOHY Obed

Table 1. Dimensions of tuna longboat.
No Items

SymbolDim

Unit

No Items

1 Length Overall

LOA

8.050

M

Condition: Full Load at Designed Waterline

Dim

2 Length of Waterline

LWL

7.600

M

Flooding to Upper Line, Upright Position

Unit

3 Length Bet. Perpend.

LBP

7.600

M

19 Reserve weight

0.509

Ton

4 Beam

B

1.076

M

20 Reserve volume

0.497

M

5 Maximum Beam

Bmax

1.165

M

21 Reserve freeboard

0.067

M

6 Draft

D

0.390

M

22 After draft

0.518

M

7 Height

H

0.640

M

23 Fore draft

0.713

M

8 Block Coef.

CB

0.641

24 Reserve freeboard aft to U.L

0.224

M

9 Midship Coef.

CM

0.795

25 Reserve freeboard fore toU.L

0.037

M

10 Prismatic Coef.

CP

0.807

Condition: Capsized, Upside Down

11 Waterplane Coef.

CW

0.773

26 Volume displacement

0.807

M

12 Gross Tonnage

GT

1.500

Tons

27 Weight displacement

0.827

Ton

13 Vol. displacement

V

2.045

M

28 Long. Centre of Buoyancy-1.360M

14 Wt. displacement,

∆

2.096

Ton

29 Total boat weight

0.548

Ton

15 Length C. Buoyancy

LCB-0.200M

30 Long. Centre of Gravity-4.540M

16 Total boat weight

W

2.088

Ton

31 Trim: by stern

17 Length C. Gravity

LCG-0.202

M

32 Reserve weight

0.279

Ton

33 Reserve volume

0.272

M

18 Trim : even keel

3

3

3

3

Other output design parameters are:






Payload: 0.7 t fish and 0.35 t ice
Ratio ice/fish: 0.5
Volume of solid boxes: 0.623 m3 (14.3 %)Total volume: 4.37 m3
Prime mover: outboard engine 25 or 40 HP
Crew: 2 persons
Fishing gears: hand line and trolling line
Autonomy: 50 nautical milles
Fishing grounds: Banda Sea, Seram Sea and other Moluccas waters

Sea Trial
The boats sea trial tests were excecuted in order to confirm the output design. The tests
included speed and floating conditions. The test of speed was executed based on a procedureof speed testing. The tests were executed in Ambon bay for three boats (Fig. 2). The results ofthe tests met the design requirements. At the floating test, all components such as engine andequipments were still attached on boats (Fig. 3, 4). The boats reached the speed of 12 or 15
knots for the engine power of 25 HP or 40 HP, respectively.
The tests for floating purpose were executed in three conditions, which are:

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Design and Application of Unsinkable Tuna Longboat for Local Fishermen

1. Loading condition up to designed waterline to check full capacity of cargo loads.
2. Loading condition up to upper line to check the ability to afloat in flooding
condition.
3. Capsized condition to check the ability of boat to afloat in such condition.
The test of full cargo load was set-up for boat draft up to the designed waterline. This
was adjusted for a payload of 0.70 t and bulk ice of 0.35 t. It was found that the boats were ineven keel position. The test of flooding condition was executed by filling sea water to allcompartments inside the boat. All compartments were filled with water meanwhile some boat
equipments were fixed. From theoretical computation, the total weight of displacement was
4.08 t and total boat weight was 3.576 t.

Fig. 2. A sea trial test for the speed.

Fig. 3. A floating test for upright position.

Fig. 4. A foating test for capsized condition.

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HETHARIA Wolter R. and METEKOHY Obed

This means that there was still a reserve weight of 0.50 t or reserve volume of 0.50 m3
was provided. It was found also from the test measurement that the boats were trim by bow. A
reserve freeboard was measured for three boats as follows:
After freeboard to upper line:
Fatek 08: 0.20 m
Barracuda: 0.22 m

Yellow Fin: 0.215 m

Fore freeboard to upper line:
Fatek 08: 0.041 m
Barracuda: 0.045 m

Yellow Fin: 0.042 m

The tests of capcized were executed by turning the boats to upside-down position. From
theoretical computation, total weight displacement was 0.827 t and total boat weight was
0.548 t. This means that reserve weight of 0.279 t or reserve volume of 0.272 m3 were
provided for the boats. It was found also from the test that the boats were trim by stern.
Vertical dimensions of freeboard height were found from measuring floating conditions. Theyare:
After freeboard measured from DWL (immersed):
Fatek 08: -0.010 m
Barracuda: -0.011 m

Yellow Fin: -0.010 m

Fore freeboard measured from DWL (emerged):
Fatek 08: 0.018 m
Barracuda: 0.019 m

Yellow Fin: 0.017 m

It was seen from the results of sea trial tests that the designed boats were afloat to their
upright as well as capziced positions. Those results were closed to the theoreticalcomputations. For a loading condition to designed waterline, it was found that the boats werein even keel condition. A cargo capacity of fish 1.0 t and ice 0.50 t was designed in this work.
A critical conditon where the boats were fully flooded was obtained by filling water into allboats’ compartments. The results were all three boats still afloat with a little trim by bow.
According to theoretical computations, a reserve of after and fore free board to upper line
were 0.224 m and 0.037 m, respectively. Where from the results of sea trial tests, they were0.21 m and 0.043 m. The differences were came from the difference of LCG position in thisloading condition.
When the boats were capcized, they were still aflot as seen from the results of the tests.
The boats were trimmed by stern. An indication of measurement for this condition was
freeboard measured from designed waterline. On the average, after freeboard measured fromDWL for the three boats are -0.11 m. The negative sign means that the boats were immersed
at after perpendicular. Meanwhile, fore freeboard measured from DWL for the three boats are+0.018 m. The positive sign means that the boats were emmerged at fore perpendicular.

89
Design and Application of Unsinkable Tuna Longboat for Local FishermenTraining Program for Local Boat Builders
During the project of boats construction in 2008, the local boat builders were participated.
The training project was organized by Department of Naval Architecture, Faculty ofEngineering, Pattimura University, Ambon, Moluccas. The total of 55 participants fromprivate and government sectors in Moluccas are involved. They were trained for theoreticaland practical approaches of boat design and construction (Fig. 5). By the knowledge achieved
during the training period, they continue to develop this concept to their new product of boats.

Conclusion and Future Work
From the results of theoretical computation and sea trial tests, it was concluded thatwhen a boat is provided with some solid boxes inside it is still afloat even in full of water or
capsized conditions. Those solid boxes reduce the quantity of water coming into the boat.
Besides, the solid boxes create the buoyancy of the boat in the capziced position. A proper
distribution of solid boxes give a condition where the boats were not trimmed excesivelly.
This condition makes easy operation of turning back the boat from the capsized condition toits initial upright condition.
The boats were designed, constructed and tested for their capability to afloat. It wasrecommended to be applied to the users. The local boat builders have developed this concept
for their new products and this help the local fishermen for preventing the sink of boat in therough seas. This concept of boat design is recommended to be used for the fishermen in
Eastern Indonesia as well as the users in the Pacific regions.
The application of this concept for the larger fishing boats is still in the question markbut it will be some solutions for the future. However, this concept will be applied soon for thesmall fast passenger boats operated in the archipelago regions.

Fig. 5. A training session for local boat builders.

90
HETHARIA Wolter R. and METEKOHY ObedAcknowledgements
Special thanks are dedicated to the Directorate General of Higher Education, Departmentof National Education, for their financial support to The Maritime Project Faculty ofEngineering Pattimura University, 2008.
Special thanks are dedicated also to the Team of Design and Construction Small Fishing
Boat, Department of Naval Architecture, Faculty of Engineering, Pattimura University. Your
hard works are greatly apreciated.

References
ANONYMOUS 1960. Marine Design Manual for Fiberglass Reinforced Plastic, 412 pp.,
McGraw-Hill Book Company Inc., New York, USA.
FYSON, J. 1985. Design of Small Fishing Vessels, 319 pp., the Food and Agriculture
Organization of the United Nations, Fishing News Books, Farnham, UK.
LEWIS, E. V. 1988. Principles of Naval Architecture, Vol. I, Stability and Strength, 310 pp.,
SNAME, Jersey City, New Jersey, USA.
HETHARIA, W. R., DE FRETES, E. R. and MATATULA, L. A. T. 2001. Desain dan Operasi Alat
Tangkap Tunas Long Line yang Beroperasi di Parairan Maluku (Design and Operationof Long Line Operated in Maluku Waters), Prosiding Seminar Nasional Aplikasi Sains
dan Teknologi, Direktorat Jenderal Pendidikan Tinggi, Departemen Pendidikan Nasional,
Jakarta, 21–24 May, 2001 (in Indonesian).
HETHARIA, W. R., DE FRETES, E. R. and MATATULA, L. A. T. 2003. Desain dan Operasi
Prototype Kapal Ikan Tuna Pole and Line Material Fiberglass Reinforced Plastic untuk
Nelayan Lokal di Maluku (Design and Prototype of Pole and Line Boat FRP Material for
Local Fishermen in Maluku), Prosiding Seminar Nasional Aplikasi Sains dan Teknologi,
Direktorat Jenderal Pendidikan Tinggi Departemen Pendidikan Nasional, Jakarta 26–28
May, 2003 (in Indonesian).
HETHARIA, W. R. 2008. Bimbingan Teknik Pembuatan Kapal Perikanan Kecil Material FRP(Technical Assistance in Building Small Boats), Modul Kelas Program Pelatihan
Pembuatan Kapal Perikanan Kecil – Kerjasama Fakultas Teknik Unpatti dengan Nelayan
Pesisir di Propinsi Maluku, Poka, Ambon, Indonesia, 25 March to 7 April, 2008 (inIndonesian).
RAWSON, K. J. and TUPPER, E. C. 1984. Basic Ship Theory, Vol. 1, 3rd Edition, 374 pp.,
Longman, New York, USA.
TAGGART, R. 1983. Ship Design and Construction, 713 pp., SNAME Publication, New Jersey,
USA.

91
南太平洋海域調査研究報告
OCCASIONAL PAPERS

No.58（2017 年 3 月）
No.58（March 2017）

Renewable Energy Makes Life Style Change:
An Example of Yakushima Island’s Zero Emissions
ICHIKAWA Hidetaka
Faculty of Law, Economics and Humanities, Kagoshima University

Abstract
Tohoku Earthquake, which occurred on March 11, 2011, was a cause of great shock, not only to Japanbut to the rest of the world as well. The quake has led to a paradigm shift in terms of the use of electricity
power. We must now review our nuclear power policy and change our lifestyles by imposing limitations on
the use of electrical power. In the past, we have thought of nuclear power as being low cost, which isimportant in terms of business activities. Subsequently, we have found nuclear power to be high risk, asevident in this accident. We have to find alternatives. Nuclear power is the most effective way of generatinglarge amounts of electricity, and it is difficult to achieve these large volumes except other energy sources.
Yakushima Island, a World Natural Heritage Site located in Kagoshima Prefecture, Japan, is almost
completely powered by hydroelectricity. Focusing on this unique island, Kagoshima Prefecture is
promoting the “Zero Carbon Emissions Island” initiative, which aims to create a developed area wherecarbon dioxide (CO2) emissions are effectively reduced. I thus propose alternatives to nuclear power aswell as a new lifestyle, using Yakushima Island as an example.
Keywords: electric vehicles, new lifestyle, World Natural Heritage Site, Zero Carbon Emissions Island

Use of Renewable Energy
Renewable energy has been used in the world. It depends on country terrain, wind powerand solar power are developing in Spain and United States. In Japan, hydro water power is themost popular, but wind power is not widely open because of the terrain and operation. On theother hand, Japan is surrounded by the sea; it is supposed the use of offshore wind.
According to the investigation of the International Energy Agency (IEA), the amount ofelectricity generated by renewable energy in the world in 2008 account for only 18%. IIDA
Tetsuya said that diffusion of renewable energy power generation in Japan is about 10% and it
has not been changed for past 10 years (THE NIKKEI NEWSPAPER 2012). Compared with thesame period in Germany and Spain, it increased by 18% and by 20% in Germany and in Spain,
respectively. About the reason for the delay in promoting renewable energy in Japan, IIDA

92
ICHIKAWA Hidetaka

says that there are four problems: (1) no support system, (2) monopoly of the transmission
line by the power company, (3) excess of the amount due to local government regulations andthe country and (4) absence of agreement with the local community (THE NIKKEI NEWSPAPER
2012). For (1), feed-in tariff of renewable energy was adopted late in Japan. In Spain andGermany, it is already adopted. Solar cell manufacturers, such as Q-Cells, have increased its
share. In this early century, Japanese companies, such as Kyocera and Sharp, had the majorityof the share of solar power, which were reversed in Western companies because these wereeffectively utilized the feed-in tariff. Now, here is momentum in Chinese companies such as
Suntech Power and JA Solar with low cost that will dominate the market. For (2), powerindustry intends to try to promote nuclear power than renewable energy because each powercompany has a monopoly on the wall next to the power transmission network. For (3), this is
the adverse effects of traditional Japanese legacy system. When you are trying to takeadvantage of renewable energy, its application is impeded by a number of regulations. For
example, trying to take advantage of geothermal energy has been placed under the control of
the National Park, you will not be able to use actively. If you want to use it, you have tosubmit many applications to more than one municipality, prefecture, city, Government and soon. For (4), this is the problem of water rights, which is a major concern in the region. When
you are trying to set up the hydropower, you must get permission to the water rights ofdownstream to do it. This task is very difficult. To make this easier, it will be necessary topenetrate the recognition of renewable energy. The biggest advantage of renewable energy isthe eco-friendly and cleanly. But, it is difficult to understand it. The biggest concern for awater right is that their rights are infringed.
There are many problems which renewable energy does not penetrate in Japan. The lackof understanding of renewable energy is also one of the biggest problems. The merit of using
renewable energy is that energy is never dirty after use, and we are able to reuse many times.
By recognizing the benefits, we have to use renewable energy as energy that can be usedsemi-permanently.

Lifestyle Change from Large-Scale Power Generation-Dependent
Each household made a self-generation to correspond to the power demand in the late
19th century (CARR 2008). Then, the customers have come to rely on large-scale power
generation facilities. Because of the economies of scale, electricity price is reduced, many
appliances are developed. Moreover, an electrical-dependent lifestyle has evolved in a way tomaximize the benefits of low-cost power. It means that you can use the required amount of
power, you don’t worry about the lack of power in order to enrich the lives of your own. As
far as economic development continues, you were able to increase in ever-increasing amount93
Renewable Energy Makes Life Style Change: An Example of Yakushima Island’s Zero Emissionsof power you need. Thus, further economies of scale in power will advance, which is
promoting the construction of large power plants such as nuclear power that can generate
electricity efficiently.
At this time, if this flow is reversed, you do not depend on the power company; eachhousehold produces the power required. It is renewable energy which makes it come true.

Hydro Power in Yakushima Island
Yakushima Island is the fifth largest island in Japan, 132 km perimeter, 503 m2 area. In“Drifting Clouds” book, HAYASHI Fumiko wrote “in Yakushima it rains 35 days in one month”(HAYASHI 1953). It is an area very much rain which caused by mountain conditions.
Yakushima Island is blessed with the natural environment. Hydroelectric power using theabundant water takes up a lot of power in Yakushima.
According to “The History of the Power in Kagoshima” (KYUSHU ELECTRIC POWER CO.,INC. KAGOSHIMA BRANCH 1998), the hydropower has been planned early by geographicalinconvenience of outlying and abundant rainfall. In 1916, Kagoshima Electricity got the waterrights of Anbou River and tried to build a fertilizer plant but not achieved. In 1924,
Yakushima Hydroelectricity Company was established. Takeno River Plant was completed
two years later and general electric light was supplied to Isso, Yoshida and Nagata area. In
1949, hydroelectric power was 385 kW power generation in just four areas; there were 1,530
light lamp. Yakushima Denko Co., Ltd., in 1953 completed Senpiro Fall Plant, and in 1960
Anbou River Plant was completed. So there are four hydropower plant and one thermal plantin Yakushima. Miyanoura thermal power plant is not running basically. It operates just when
the hydropower is insufficient. Instead of Kyushu Electric Power, Yakushima Denko has been
responsible for it in Yakushima. The amount of hydroelectric power generation have morethan enough, the power supply is not considered stagnation. Yakushima power has been met
by hydroelectric power, which will serve as a model for Japan that is to increase thepercentage of renewable energy. So we have to think of the effective use of available capacityhydroelectric and need to promote the benefits that will change as the disadvantages of theisland.

The Use of Electric Vehicles
It is possible that hydropower generated from abundant water in Yakushima covers themost of the island’s power. The geographical disadvantage of islands, for the supply ofgasoline, is about 20% higher than the price of gasoline in mainland. If many use the electric

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vehicles, we will save about 50%. If gasoline can be replaced by electric, economic burden of
the people in Yakushima can be reduced and it is expected that the realization of zero
emissions and CO2-free will come true.
Many people in Yakushima can finish the requirements in less than 30 minutes. Range ofactivities is within 20 km. Disadvantages of electric vehicles are the time for a single charge.
As described, this condition is sufficient. In other words, the electric vehicle is very
economical and reasonable in Yakushima.

New Lifestyle
With the spread of electric vehicles, a new lifestyle is proposed in Yakushima. Whatelectric car brings is not only zero-emissions, CO2-free, but also low cost convenient life. But,
the electric car is not yet sufficiently diffused in Yakushima. The environment which electricvehicles spread is not enough in Yakushima. So, we have discussed the environment
surrounding the electric vehicles; “What elements are missing?”, “What should be
improved?”, “If these problems are eliminated, are electric vehicles prevalent in Yakushima?”,“Will we achieve zero emissions and CO2-free?” I mentioned about the problems to be solved
and the potential for electric vehicles.
(1) High selling price compared to equivalent gasoline vehicles(2) Infrastructure on the island, namely lack of charging facilities(3) Lack of understanding to the electric car(4) Impact on existing industries, the creation of new industries
For (1), not only national and local government subsidies, but the innovation to reduce
the selling price by automobile company is necessary. It is important to be able to sell to
consumers without burden.
For (2), not only subsidies for charging equipment, but the small and lightweight battery,such as a 100 V household power supply, which we can be replaced when needed is expected
to be developed. And we would require an extension of the cruising range due to improved
battery technology.
For (3), rate of more than 65 years of age accounted for 28.7% in Yakushima Island. Car
is also the necessities of life, the driving is essential for their life. Many elderly drive often, asimple way of charging and anxiolytic to out of batteries in the middle of operation will benecessary. Only the benefits of electric vehicles would not be an appeal to purchase. We
would need to make surely awareness for electric vehicles to islanders. As described in thispaper, automotive operating environment at Yakushima is very limited, it is expected that the95
Renewable Energy Makes Life Style Change: An Example of Yakushima Island’s Zero Emissions

possibilities of out of batteries is as same as the shortage of gasoline when you drive theinternal combustion engine. As long as the battery is not in trouble, we make it sure that out ofbatteries never happen in the use of electric vehicles during the day if we have each nightcharge.
For (4), with the spread of electric vehicles may have a major impact on the conventional
industry and business. For example, gas station would go no longer required due to the spreadof electric vehicles. The conventional garages must be corresponding to the electric vehicles,
mechanic technology is not intended for combustion; it may be required to that of electricalsystems.
Resume operations of nuclear power plants is a difficult situation, it may be required toincrease the power rates and rolling blackouts. So hydropower potential in Yakushima will
become the coveted for many companies. Disadvantage of solitary island has come to hamper
the development of new industries, young people has gone out to the city to get the job. Basedon the abundant hydro and power crisis, you should actively attract new companies.
Compared to the demerit to be away from the city and the merit to the stability of the power
supply, there is a benefit to the company to advance to Yakushima. Hydroelectric power
provided by abundant water in Yakushima, which is the renewable energy and does not give aload to the nature, will bring a new life style.

Conclusion
By using renewable energy, in this paper I have proposed the creation of a new lifestyle
to take advantage of electric vehicles. In Japan, most of the nuclear power plant is shut down
currently, alternative method that is the thermal power mostly. But, thermal power generation
has environmental impact of carbon dioxide emissions, as became apparent this accident,
nuclear power also has a large risk to the environment. The only way to remove theenvironment risk would be use of renewable energy. Power generation per one facility is verysmall. In Japan, mountainous areas account for approximately 65%, as hydropower have beenutilized since ancient times, we have very big potential for renewable energy.
Benefits of hydroelectric power are not polluting the water after use. Although there areproblems such as water rights, rediscovering the validity of hydropower, I wonder if it might
become an opportunity to review the hydro power as an alternative to conventional power
generation.
I have an example of Yakushima because of special situations, abundant annual rainfall
and hydroelectric power. So it is possible to use the hydroelectric power effectively to drive
electric vehicles. Also be registered on the World Natural Heritage Site, Yakushima appeals tonature conservation and the maintenance. Most of the island is occupied by forest and if we96
ICHIKAWA Hidetaka

can achieve CO2-free, zero emissions, we can enhance the value of its presence more. If
alternative to gasoline-powered vehicles are electric vehicles, they will not emit CO2, it will
be a big help to protect the natural environment. Gasoline prices in Yakushima are about 20%
higher than those in mainland Japan, it would be a great benefit if you change from gasoline
to electrical energy for vehicle. To use the renewable energy is a competitive advantage toanother area. In Yakushima, small hydroelectric power has begun to be implemented, which isthe amount of close to zero. There are many rivers, waterfalls everywhere, it is expected that
there are so many places that we can take advantage of hydroelectric power. Taking advantageof them, you will be able to interchange the power unit residents. It will serve as a model ofpower generation and supply system of a recycling-oriented not only Japan but also world
should aim to. We have been building a power plant in the form of destroying nature so far,but with an awareness of the use of more natural, we should think we will live together in theform of power generation facilities.
It is expected that renewable energy will be utilized in many places in the future andenergy recycling system will be constructed more efficiently. Yakushima is a cutting-edge
area of the model, we will be sure to create a form that does not leave a load on the future to
generate the power.

References
CARR, N. G. 2008. The Big Switch: Rewiring the World, From Edison to Google, 278 pp., W.
W. Norton & Company Inc., New York, USA.
HAYASHI, F. 1953. Floating Clouds, 473 pp., Shinchosha Publishing Co. Ltd., Tokyo, Japan(in Japanese).
KYUSHU ELECTRIC POWER CO., INC. KAGOSHIMA BRANCH 1998. The History of the Power in
Kagoshima, 276 pp., Kyushu Electric Power Co., Inc. Kagoshima Branch, Kagoshima,
Japan (in Japanese).
THE NIKKEI NEWSPAPER 15 April 2012 (IIDA, T.: The Ability of Renewable Energy the More
Penetrate the More Price Decline) (in Japanese).

KAGOSHIMA UNIVERSITY RESEARFCH CENTER
FOR THE PACIFIC ISLANDS

鹿児島大学国際島嶼教育研究センター

南太平洋海域調査研究報告（バックナンバー）OCCASIONAL PAPERS (BACK NUMBER)

No. 30 The Progress Report of the 1995 Survey of
the Research Project, “Man and the Environment in
Micronesia” (English)
No. 31 Invitation to the South Pacific: Selected
Lecture Notes from the Kagoshima University Research Center for the South Pacific Public Lecture
Series 1994-1997 (Japanese)
No. 32 Foraminifera as Indicators of Marine Environments in the Present and Past (Japanese)
No. 33 Islands and Information Society (Japanese/
English)No. 34 The Progress Report of the 1999 Survey of
the Research Project “Social Homeostasis of Small
Islands in an Island-Zone” Yap Proper, Micronesia
and Islands in Southern Japan (Japanese/English)
No. 35 “The Power of Place” of the Areas at the
Boundary between Land and Sea: The Viewpointfrom Southern Kyushu and the Southerly Islands(Japanese)
No. 36 Health and Medical Issues in Island Areas(Japanese/English)
No. 37 Researching Eruption Clouds of Volcanic
Island Chains (Japanese/English)
No. 38 The Progress Report of the 2000 and 2001
Survey of the Research Project “Social Homeostasisof Small Island in an Island-Zone” Islands in Southern Japan (Japanese/English)
No. 39 The Progress Report of the 2000 and 2001
Survey of the Research Project “Social Homeostasisof Small Island in an Island-Zone” Yap Proper andUlithi Atoll, Micronesia (English)
No. 40 Institutions in the Making: An Interdisciplinary Study on Social Life and Economy of the Philippine Local (Japanese)
No. 41 “Symbiosis” of Human Being and Nature in
the South Pacific Islands (English)
No. 42 The Progress Report of the 2002-2004 Survey of the Research Project “Social Homeostasis of
Small Island in an Island-Zone”: Interdisciplinary
Approach to Satsunan Islands Focussing on Yoron
Island (Japanese/English)

No. 43 Islam in Contemporary Southeast Asia (Japanese)
No. 44 The Future of Shimauta (Japanese)
No. 45 Innovation of Education in Remote Islands
to Affect a Request of the Present Age (Japanese)
No. 46 A Research Project for Sensor Zone Setting
on Kagoshima Chain Islands from South to North
for Cultural and Environmental Transition (Japanese)
No. 47 Global Warming and Pacific Islands (English/Japanese)
No. 48 Climate Changes and Globalization: Environment and People’s Life in the Pacific Islands(English)No. 49 Strategy on the Asian-Pacific Islands andKagoshima: Center-Periphery, Interdisciplinary andInternational Contribution (Japanese)
No. 50 Re-Opening as “The Center for Island Studies Education and Research”, Symposium: “Nesia
Empowerment” Developing Island Futures (Japanese/English)
No. 51 Interdisciplinary Research in the Small Islands, Subtropical Zone (Japanese)
No. 52 The Development towards Affluent and Homeostatic Kagoshima Islands (Japanese)
No. 53 Research on the Influence of Globalization
and Global Warming on Life in Chuuk Atoll (English)
No. 54 New Horizon of Island Studies in the
Asia-Pacific Region (English)
No. 55 Challenge of Integrated Disciplinary Research: Natural Resource Uses in the Pacific Islands(Japanese/English)
No. 56 Report of the 2014 Survey of the Research
Project (Presidential Discretionary Fund for Island
Studies (Japanese)
No. 57 2015 Project Progress Report: Biodiversity
and Its Conservation in the Satsunan Islands (Japanese)