Judul: Study on the biology of the ghost shrimp, Nihonotrypaea japonica (Ortmann 1891) (Decapoda: Thalassinidea: Callianassidae), distributed on intertidal Sandflats in Ariake Sound, Kyushu, Japan
Abstrak: Nilumotrypaea jfll)Onica (Ortmann 1891) is one of the commonest members of large­sized benthic fauna. inhabiting intertidal sandflats largely in the middle one-third of A.riake Sound, Kyushu, Japan, while the habitats of its congeneric species, N. hann(!ndi, range from Ariake Sound (estuary) through Tachibana Bay (intermediate waters) to the East China Sea (open sea). However, there is a little overlap in their distribution margins. The two shrimps construct and reside in complex tubular branching burrows for shelter, reproduction and feeding. Accompanied with their activities during burrow construction or maintenance and/or feeding, unwanted sediment is ejected from the burrow, forming mounds on substratum surface. Those activities are often called bioturbation. Whilst the importance of bioturbation has been recognized, there are still relatively few detailed studies of the shrimps' biology. This is particularly true of N. japonica. The aim of the present study was to elucidate the biology of N. japonica, including (l) taxonomy, (2) spatial distribution and (3) life history, in the light of comparative viewpoint to those of N harmandi. The results of the three subjects are presented in three chapters after Chapter I (General Introduction), i.e. Chapter II, Chapter ill ;md Chapter IV, respectively. Chapter ll - For the two calliaoassid shrimps, Nihonotrypaea japonica and N harmandi, morphometric character variations [carapace length (CL), total length (TL), abdomen width (AW), eyestalk width (EsW), cornea width (CoW), and rostrum angle (RA)] were examined based on the materials collected from sandflats in western Kyushu, Japan. Allometric relationships were established between each combination of two morphometric characters for each species, in which CL was fixed on the abscissa as a reference variable; the values of TL, AW, EsW and CoW lnearly increase with the CL..dst
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Judul: Keanekaragaman udang air tawar pada berbagai tipe habitat di Provinsi Jambi
Abstrak: The freshwater shrimp can be found in Indonesia Indonesia is consisted of families Atyidae and Palaemonidae of the order Decapoda. The main barrier factors influencing the presence of freshwater shrimp include habitat characteristics and environmental quality in each habitat type. Jambi Province, including the areas with lowland tropical rainforest has the highest deforestation rate in the Asian region. Effects of changes in forest conversion to agricultural habitats will change the ecosystem conditions. It is thought to affect macroinvertebrate diversity therein. The purpose of this research is to study the diversity of the river freshwater shrimp found in oil palm plantation, rubber plantation, community forest and secondary forest in relation to the convertion of forest and to clarify the species through DNA barcoding. The shrimps were collected from two locations, i.e. Batanghari and Sarolangun Regencies. The collection of the freshwater shrimps were conducted in four habitat types, i.e oil palm plantation, rubber plantation, community forest, and secondary forest. The research locations were chosen purposively and continued road sampling. Samples were taken by using a hand net and fish trap. Specimens’ identification were based on Wowor et al. 2004 and Cai et al. 2007. The environmental factors observed velocity (m/second),depth (cm), brightness (cm), temperature (°C), pH and substrate type. To see the effect of forest conversion to the diversity freshwater shrimp were analysed with Kruskal-Wallis non-parametric analysis continued with Multiple Comparisons. The relationship of the distribution of the freshwater shrimp were tested with Canonical Correspondence Analysis. Community structure were analysed with calculated diversity indexs, the eveness, and the similarity of habitats by using Primer 5 program. The study revealed six spesies of freshwater shrimp consisted of Macrobrachium malayanum, M. pilimanus, M. lanchesteri, Caridina malayensis, C. propinqua, C. excavatoides. Macrobrachium malayanum. Highest amount of diversity and evenness in Batanghari Regencies found in the oil palm plantation (H '= 0.934) and community forests (E = 0.934). Analysis of habitat similarities between habitats showed that oil palm and rubber plantations have similar habitat types, and different people in the forest habitat.... The freshwater shrimp diversity and eveness in Batanghari found high in the oil palm plantation (H’=1.148) and community forest (E=0.934). Analysis of habitat similarity between habitat oil palm plantations and rubber plantations have similar habitat type, and different in community forest. The freshwater shrimp diversity and eveness in Sarolangun found high in the secondary forest (H’=0.699) and community forest (E=0.6909). Analysis of habitat similarity between habitat community forest and rubber plantations have similar habitat type, while secondary forest habitat have similar with oil palm plantation. Based on the analysis of Canonical Analysis corespondance that environmental factors affecting the distribution of certain shrimp. This is shown in Batanghari Regencies , Macrobrachium lanchesteri distribution was affected by the altitude, width and pH. Caridina malayensis, C. excavatoides and C. propinqua distribution was affected by temperature and pH. Distribution of M. pilimanus and M. malayanum was affected by velocity and brightness. At the Sarolangun Regencies, distribution M. malayanum was affected by pH and temperature, while the distribution of M. lanchesteri was affected by pH and brightness. Based on the analysis
Keyword: diversity, freshwater shrimp, Macrobrachium, Caridina, DNA Barcode

Judul: Katalis Zink Ferit Tersubstitusi Cu untuk Oksidasi Benzil Alkohol
Abstrak: Katalis berperan dalam menurunkan energi aktivasi. Katalis ZnFe2O4 dan ZnFe2O4 tersubstitusi Cu disintesis menggunakan metode kopresipitasi untuk digunakan dalam oksidasi benzil alkohol. Katalis dicirikan dengan spektrofotometer inframerah (FTIR) dan difraktometer sinar-X. Spektrum FTIR menunjukkan puncak serapan dari ikatan Zn-O dan Fe-O masing-masing pada rentang 559‒575 cm-1 dan 419‒447 cm-1. Difraktogram menunjukkan terbentuknya fase tunggal Zn0.6Cu0.4Fe2O4 pada katalis ZnFe2O4 tersubstitusi Cu 20%. Benzil alkohol dioksidasi dengan sistem refluks. Konversi benzil alkohol meningkat dengan meningkatnya suhu. Kadar benzaldehida yang dihasilkan dengan katalis ZnFe2O4 tersubstitusi Cu 20% lebih tinggi dibandingkan dengan katalis ZnFe2O4 yang tidak tersubstitusi dan yang tersubstitusi Cu 60 dan 80%. Hal tersebut menunjukkan bahwa katalis ZnFe2O4 tersubstitusi Cu 20% memiliki kinerja yang lebih baik dalam oksidasi benzil alkohol menjadi benzaldehida dengan kadar benzaldehida 8.763%.
Keyword: Benzil alkohol, katalis, oksidasi, ZnFe2O4