bluuebunny/crossref_metadata_2025 huggingface dataset:
Flexible housing implementation in dome-shape post-disaster relief house: Is it possible?
Authors: Pramishinta Pingkan A , Widyarko
Published: April 2021

One of the major disasters in Indonesia within the last two decades was the 2006 earthquake in Yogyakarta. The earthquake prompted the government to assist the victims by rebuilding their houses through the post-disaster housing programs. Usually, when designing post-disaster relief houses, aspects such as mass-production speed, building strength, and other functional aspects became the main priority. Consequently, local culture, each occupant’s uniqueness, and particular needs are often forgotten to be accommodated in the house. These issues can be solved by applying the flexible housing concept where a house can change according to its users’ needs and adjustments to specific patterns as demographics, economy, and the environment. However, previous precedents of houses built with this concept tend to use a frame structure system that is more flexible to modify within the long term. Thus, this research raises a case study of post-disaster relief houses in Yogyakarta built after the 2006 earthquake, which uses a dome structure. Interviews and on-site observation were applied to investigate whether flexible housing applications can be implemented in the house. Overall, this domeshaped post-disaster house is still far from being categorized as flexible housing.
A sustainable ecotourism conservation model based on biodiversity analysis of Tambaan Coast, Pasuruan City, East Java Province. Indonesia
Authors: Rudianto  , Dwi Ari Sanda Luthfian , Chairi Vina Rahmi , Putri Olivia Nilla , Ester  , Nur Habibah Eva
Published: April 2021

Currently, coastal areas are facing various pressures, resulting in degradation of the areas. The pressures come not only from anthropogenic factors but also from natural factors. However, coastal areas have coastal ecosystems which can potentially be developed into marine ecotourism areas. It is necessary to formulate a model of ecotourism conservation based on biodiversity. The study was conducted at Tambaan Beach, Pasuruan City to prepare a model of ecotourism conservation based on gastropod diversity in the mangrove forest, the presence of mudskipper, Total Suspended Solid, and type of sediments. The objective of this study is to develop a model that is suitable for the development of marine ecotourism areas that can be conserved so that they can be sampled for marine ecotourism areas elsewhere. The study employed the DPSIR (Driver-Pressure-State-Impact-Responses) model to determine the process and interaction of the relationship between the coastal environment and the surrounding humans. The results indicate that the conservation management of marine ecotourism areas based on biodiversity is essential not only for the current generation but also for future generations.
The effect of thickness mangrove mud substrate media on growth and survival rate of sea worms (Nereis sp.)
Authors: Shofiya A D A , Pinandoyo  , Windarto S , Herawati V E
Published: April 2021

Nereis sp. is a type of sediment-eating organism (deposit feeder) which harness organic materials provided by other organisms as food. Nereis sp. has slow growth, because thickness and the type of substrate in which it grows is less than optimal. The aim of this study is to examine the effect of mangrove mud substrate media thickness on the growth and survival rate of Nereis sp. Research animal in the form of Nereis sp. aged 2-3 months. Experimental media used in this study was mangrove mud substrate which has a high nutrient content with different thickness of substrate media. The experimental method used in this study was a completely randomized design (CRD) (4 treatments and 3 replications). Treatments A (thickness 3 cm), B (thickness 6 cm), C (thickness 9 cm) and D (thickness 12 cm). The results showed that treatment C has the highest absolute growth, SGR, FUE, FCR, PER and SR were 6.66 ± 1.18bc, 0.43 ± 0.01bc, 68.93 ± 12.67a, 1.35 ± 0.13b, 1.72 ± 0.34a, and 97.00 ± 3.61bc. In conclusion the thickness of the mangrove mud substrate media significantly different (P<0.05) on Nereis sp.
Specific growth rate and survival rate of striped catfish (Pangasianodon hypophthalmus) in the nursery phase
Authors: Miladiyyah A , Sari P D W
Published: April 2021

The performance of specific growth rate and survival rate of striped catfish (Pangasianodon hypophthalmus) in the nursery phase were observed. The working method used in this research was data collection methods, consisting of primary and secondary data obtained from direct observations, interviews, and literature study. Nursery activities were carried out starting from larvae that have been depleted of egg sac up to 0.75-1 cm in size. In the end of nursery activities, the result showed 0.43% in specific growth rate and 60.14% in survival rate of siamese catfish fingerlings.
Identification and antimicrobial activity test of endophytic fungi from water hyacinth petiole (Eichhornia crassipes) against Escherichia coli and Staphylococcus aureus
Authors: Fanani A Z , Triastuti J , Sulmartiwi L
Published: April 2021

Endophytic fungi have bioactive compounds in the form of secondary metabolites that come from reciprocal relationships with their host plants. Microorganisms such as endophytic fungi has important role in the production of bioactive compounds in the field of biotechnology. The main goal of this study was to find out the antimicrobial activity of endophytic fungi from water hyacinth petiole against E. coli and S. aureus. The endophytic fungi were cultured from petiole of water hyacinth on PDA for 4-5 days at 30ºC. The fungi isolates that have grown were purified and used to test of antimicrobial activity. The method used for antimicrobial test is overlay and disc diffusion agar test. There were 8 endophytic fungi isolated, a total of 4 endophytic fungi identified. Overlay test of the results showed only three isolates had antimicrobial activity i.e Aspergillus sp. Trichophyton sp. and Penicillium sp. Disk diffusion test of the results showed that Penicillium sp. had strong antimicrobial activity with inhibition zones 13.6 ± 1.4 mm (E. coli) and 7.5 ± 1.1 mm (S. aureus). Meanwhile, Aspergillus sp. produced antimicrobial activity with inhibition zones 2.5 ± 0.2 mm and Trichophyton sp. of 2.8 ± 0.7 mm against E. coli bacteria.
Prevalence and intensity of endoparasitic helminth on swamp eel (Monopterus albus) from natural caught and cultivation
Authors: Januarista Y T , Kismiyati  , Ulkhaq M F
Published: April 2021

Swamp eel (Monopterus albus) is one of the highly prospect freshwater fisheries commodities that are consumed by broad community. Marketed swamp eels are generally derived from natural caught and cultivated eels. Natural caught swamp eel has high risk of infected parasites from a natural feed that contaminates with larvae of the parasite of cultured swamp eel could be infected with a parasite from poor pond biosecurity. Information about the types of parasites that infect swamp eels from natural caught and culture has never been reported before. The aims of these studies were to identify the endoparasite and calculate the prevalence and intensity of endoparasite in swamp eel from natural caught and cultivation. A total of one hundred and twenty swamp eel (37.7±2.5 cm height) collected from natural caught and pond culture in Banyuwangi. Two endoparasites helminth were infected to eels from natural caught and cultivation i.e Eustrongylides ignotus and Pingus sinensis. The higher prevalence and intensity of endoparasites helminth were found in swamp eel from natural caught than cultivation. Further studies were needed to molecular identified of endoparasite in swamp eel with a scanning electron microscope or 16rDNA.
The technology of striped catfish broodstock (Pangasius hypophthalmus) in high-quality maintenance
Authors: Wardani A I , Sari L A , Sari P D W , Nindarwi D D , Arsad S
Published: April 2021

Striped catfish(P. hypophthalmus)is a high economic value and is a determining factor at the hatchery stage. Quality catfish brooders that can produce superior seeds can be obtained through good handling. The purpose of this study is to gain knowledge in the maintenance techniques of catfish broodstock. The working methods used in the study is a descriptive method with primary and secondary data collection. Striped catfish broodstock uses a recirculation system which includes preparation of pond maintenance, broodstock maintenance, feed management, water quality management, broodstock selection, and spawning. The results of the average water quality parameters for 25 days are turbidity 17.85 cm, temperature 29.51°C, DO 4.23 mg/L, ammonium 0.005 mg/L, and pH 7.54. The average weight measurements in the first and second sampling are 3.11 kg and 3.13 kg, while the average length measurements in the first and second sampling are 55 cm and 56.05 cm. The growth rate in the maintenance of catfish broodstock for 21 days is 9.52 grams/day, and the specific growth rate is 0.028%. Catfish spawning uses a ratio of ten males and three females.
The effect of feed management technology (life and pellet feed) on the maintenance of mutiara catfish (Clarias sp.) in freshwater cultivation
Authors: Dewanggani A P , Sari L A , Sari P D W , Nindarwi D D , Arsad S
Published: April 2021

Catfish is currently the flagship commodity to increase economic value in Indonesia. Catfish farming is very profitable because good broodstock maintenance will produce quality tillers. A good catfish broodstock should have a feed management system, thereby improving the quality of mains. The purpose is to learn about feed management technology (life and pellet feed) on the maintenance of Mutiara catfish (Clariassp.). The method is with a descriptive method with immediate data retrieval and secondary data. Life feed is observed by taking water samples and then observed using a microscope. Life feed that is found using a microscope isSpirulinasp. andChlorellasp. Feed management on the maintenance of the broodstock of the Mutiara catfish (Clariassp.) is by feeding one time a day at a dose of 1.5 kg, the feed used is pellets PL 1 size 2 mm which has 33% protein and 5% fat, FCR which can be 2.43, absolute growth 15.42 kg, SGR 0.147 %, GR 2.4 gram/day, and SR 100%. Fish enlargement is a business activity maintenance fish up to the size of consumption. The feed is the largest component on the business of catfish enlargement.
The relationship with N/P ratio to phytoplankton abundance in mangrove Wonorejo waters, Rungkut, Surabaya, East Java
Authors: Arofah S , Sari L A , Kusdarwati R
Published: April 2021

The abundance of phytoplankton in water depends on the availability of nutrients. Nitrogen and phosphorus are two parameters that affect water. Phytoplankton require the elements of nitrate and phosphate in the production of fats and proteins. Nitrate and phosphate in water can be influenced by household waste discharges originating from residential areas around mangroves. The Wonorejo mangrove waters area is the estuary of an industrial waste journey. This study was conducted to determine the relationship of the N/P ratio to the abundance of phytoplankton in the Mangrove Waters of Wonorejo, Rungkut, Surabaya, East Java. Sampling was done at three stations with two replications. Identification or observation using a microscope. The results found that the most dominant class is the Bacillariophyceae consisted of two genus. Whereas the other classes found consisted of two genus Dynophyceae, one Clorophyceae, Coscinodiscophyceae, Fragilariophyceae and Cynophyceae. The results of the regression-correlation analysis showed a correlation coefficient of 0.885, meaning that the relationship obtained with an N / P ratio with an abundance of phytoplankton was very strong. The abundance of phytoplankton is influenced by the concentration of nitrogen and phosphate at 78.3% while the other 21.7% is influenced by physical and chemical factors of other waters.
The impact of COVID-19 on Indonesian fisheries conditions: opinion of current status and recommendations
Authors: Wiradana P A , Widhiantara I G , Pradisty N A , Mukti A T
Published: April 2021

The COVID-19 outbreak has spread rapidly across the world and has affected health, social, and economic impacts in many countries, including Indonesia. This editorial focuses on the implications of the COVID-19 pandemic on the fisheries sector in Indonesia along with recommendations on how we should deal with the current status. The pandemic has resulted in several negative impacts on the Indonesian community that is directly related to a significant decline in the demand for fisheries products. A range of problems has been reported, including marketing disturbances, issues related to post-harvest and cultivation cycles, and the livelihoods of small-scale fishermen. To overcome these issues, we provide recommendations for various stakeholders to rapidly mobilize the fisheries sector by assisting MSMEs and by helping to market fishery products online, thus facilitating the export of fishery products. These recommendations are expected to stimulate the fisheries sector to mitigate the long-term effects of the COVID-19 outbreak.
Prevalence and intensity of endoparasites in cutlassfish (Trichiurus sp.) at fish auction landing Panarukan Situbondo District and Muncar Banyuwangi District, East Java Province
Authors: Agustin S I , Subekti S , Ulkhaq M F , Amiin M K
Published: April 2021

Cutlassfish (Trichiurus sp.) is a kind of marine fishes has become an important economic commodity from several countries in Asia. The research was done to analyze the prevalence and intensity of endoparasite that infect cutlassfish (Trichiurus sp.), and to compare the prevalence and intensity of them at fish auction landing in Panarukan Situbondo and Muncar Banyuwangi, East Java Province. The method used in this research was an observation. The total of samples taken was 162 fishes. The average size of the examined cutlassfish is 56.47 ± 12.80 cm. The results showed the endoparasite that infects cutlassfish were Anisakis simplex and Camallanus carangis. The prevalence rate of endoparasites at fish auction landing respectively in Panarukan and Muncar were 23.46% and 13.58%, both of them were in the same category, often. The value of the intensity of endoparasite worms respectively in Panarukan and Muncar were 1.53 and 1.1 and both of them are also in the same category, low. Based on the Chi-square test stated that there was no significant difference (p>0.05) in the prevalence and intensity of endoparasite in both places.
Distribution of water turbidity concentrations and phosphate content in tanah merah beach and semujur island waters, central bangka regency
Authors: Yusuf M , Hudatwi M , Adi W , Robin
Published: April 2021

A large number of tin (Sn) mining activities carried out in the coastal area of Bangka Belitung has a direct impact on water quality, especially water turbidity. Turbid waters can produce large amounts of phosphate in local waters, and its distribution is influenced by the direction and speed of ocean currents. This study aims to determine the value of water turbidity concerning the amount of phosphate content in two different locations with tin (Sn) mining activities as a source of pollution. This research was conducted in July 2018, in the coastal waters of Tanah Merah Island and Semujur Island. The results of the water turbidity value in the Tanah Merah coastal waters were 12.50-22.50 NTU greater than that of Semujur Island waters, namely 4.14-7.22 NTU. The phosphate value in Tanah Merah coastal waters is 0.02-0.05 mg / L, greater than the Semujur Island waters, which is 0.01-0.02 mg / L. This indicates that Tanah Merah coastal waters are more turbid with a value higher phosphate. The existence of tin (Sn) mining activities in Tanah Merah waters has an impact on the amount of water turbidity that can bind phosphate elements compared to Semujur waters.
Experimental infection of Streptocccus agalactiae in silver rasbora (Rasbora argyrotaenia): Effect to hematological profile from infected fish
Authors: Nugrahani W A , Kusdarwati R , Ulkhaq M F
Published: April 2021

Silver rasbora (Rasbora argyrotaenia) is one of Indonesian local freshwater fishes species that have high economic value. One of bacterial diseases that probably infected to silver rasbora cultivation is Streptococcus agalactiae that caused streptococcosis. There was limited information about effect of Streptococcus agalactiae infection to hematological profile in silver rasbora has never been reported before. The aims of these studies were to determine the hematological profile of silver rasbora that experimentally infection with Streptococcus agalactiae. A total of four hundreds silver rasbora (6 ± 0.1 cm length and 3.6 ± 0.2 grams weight) were intramuscularly infection with 0,1 mL Streptococcus agalactiae in different density, include 104, 106, 108, 1010 and NaCl physiological solution as negative control. Observation of hematological profile was carried out by blood examination post infection which included total erythrocytes, total leukocytes, differential leukocytes (percentage of lymphocyte, neutrophil, and monocyte) and hemoglobin levels. Hematological profile in silver rasbora (Rasbora argyrotaenia) infected by Streptococcus agalactiae showed an increase in neutrophil and monocyte percentage and showed a decrease in total erythrocytes, hemoglobin, total leukocytes and lymphocyte percentage. Further studies were needed to prevent the Streptococcus agalactiae infection using herbal medicine.
Increased Immune Response of Carp (Cyprinus carpio L) by Giving Garlic (A. sativum) powder extract
Authors: Isroni W , Bahri A S , Maulida N
Published: April 2021

Cultivation by utilizing the stocking density and feed used is a driving force for the emergence of diseases due to decreased water quality due to the deposition of organic material from leftover food or fish excretion. Meanwhile, fish become stressed so they are vulnerable to disease attacks, especially infectious diseases such as those caused by bacteria or viruses. One of the natural ingredients that can enhance non-specific immune responses and fish growth is garlic powder. garlic is one of the natural plants which contains active ingredients such as sulfur compounds: alliin, allicin, disulfide, trisulfide; Enzymes such as Alinase, perinase; amino acids like arginine, and minerals like selenium. Allicin is one of the active substances that can kill pathogens (antibacterial) such as Aeromonas bacteria. While alliin contained in the white bottom can significantly improve the fish’s immune system so that garlic can be used as an efficient immunostimulant. The study was conducted using the experimental method. The addition of garlic in this study was: treatment A (0 g/kg of feed), treatment B (5 g/kg of feed), treatment C (10 g/kg of feed), treatment D (15 g/kg of feed), Treatment E (20 g/kg of feed) and Treatment F (25 g/kg of feed). The design used was a completely randomized design (CRD) with 6 treatments and 3 replications. The main parameters observed were the increase in non-specific immune responses including total leukocytes and phagocytic activity and added with absolute growth parameters. As supporting data water quality measurements are also carried out.
Study of the weather parameters effect on the maduris salt production
Authors: Mahabror D
Published: April 2021

The most widely used salt production technique is the process of evaporating seawater into salt by utilizing sunlight. This study conducted to measure the weather parameter and salt production during the salt season in 2019. The method used to measure the rate of evaporation was with a impermeable pan to prevent leakage of water samples. The results show that the evaporation rate of freshwater (0°Be) is greater than saltwater (20°Be) and the evaporation in July (0.62 cm/day) is smaller than October (1 cm/day). The correlation coefficient during July until October 2019 for air temperature (r) = 0.964, humidity (r) = -0.985, wind speed (r) = 0.622, and sunshine duration (r) = 0.987. The total salt production was from July until October 2019 reached 37395 kg on a demonstration plot area of 0.43 hectares. It is estimated the total of production per hectare will reach 87 tons /season. And for 2020 based on in-situ data it is estimated that production will decrease which is salt production will begin in July 2020, unlike 2019 which began in June, this is due to the influence of changes from the West wind (Asian monsoon) to East wind (Australian monsoon).
The potency of Pediococcus pentosaceus incubated with Moringa oleifera in fermentation process to increase nutrient content of rice bran
Authors: Lokapirnasari W P , Maslachah L , Sahidu A M , Yulianto A B
Published: April 2021

This study aimed to improve the nutritional quality of rice bran by usingPediococcus pentosaceusincubated withMoringa oleiferaextract (MOE) extract in rice bran fermentation. The treatments were divided into 7 treatments and 3 replications, as follows: P0: control; P1: 1%P. pentosaceus); P2: (1%P. pentosaceus+ 1%MOE); P3: (1%P. pentosaceus+ 2%MOE); P4: (2%P. pentosaceus; P5: (2%P. pentosaceus+ 1%MOE); P6: (2%P. pentosaceus+ 2%MOE).MOEwas added to probiotics according to the dose of treatment and then incubated at 37ºC for 24 hours. Furthermore, synbiotic had been used to ferment rice bran for 5 days under anaerobic conditions. The results indicate that there was a significantly different (p <0.05) in the group treatments and group control on the content of extract ether, crude protein, nitrogen-free extract, crude fiber, and metabolizable energy. The use of synbiotics in the treatment showed an increase in crude protein by 16.76%, a decrease in crude fiber by 23.35, a decrease in extract ether by 19.86%, NFE 9.47%, and an increase in metabolizable energy from 3057.41 to 3153.08 kcal/kg. Based on the results of this study, it could be concluded that the use ofP. pentosaceusincubated withM. oleiferaextract could be used to improve the nutritional quality of rice bran.
Hatching and harvesting techniques for Artemia cysts with different effects of salinity in the district of Situbondo, East Java
Authors: Bahr A S , Isroni W , Maulida N
Published: April 2021

Artemia sp. is a natural food that is very important in the hatchery of marine fish, crustaceans, freshwater fish consumption and ornamental fish. This happens because Artemia has a high nutritional value and the size that matches the mouth opening of almost all types of fish larvae. Artemia can be applied in a variety of fish and shrimp hatcheries. Good seawater, brackish and fresh. The advantage of Artemia compared to other natural foods in aquaculture is that they are traded in the form of cysts, so they can be used at any time if needed. The specialty of Artemia sp. as plankton is to have tolerance (the ability to adapt and defend themselves) in a very wide range of salt levels. At very high salt levels where no organism can survive, it turns out that Artemia sp. can tolerate it. The method used is an experimental method with the experimental design used is a Completely Randomized Design (CRD) with 3 replications and 5 treatments namely 15 ppt, 45 ppt, 60 ppt, 75 ppt 90 ppt and 30 ppt as a control. While the supporting parameters are water quality in culture media which includes temperature, pH, and oxygen.
A sustainable aquaculture model in Indonesia: multi-biotechnical approach in Clarias farming
Authors: Gustiano R , Prakoso V A , Radona D , S Dewi R R S P , Saputra A , Nurhidayat
Published: April 2021

Clarias catfish is the second rank of Indonesian commodity after tilapia in the production of freshwater aquaculture. It is due to the biotechnical innovations in aquaculture for breeding and grow-out, as well as selective breeding of superior fish. Nowadays, Clarias farming is a promising business because of a large market available in line with food security, fish farmers’ welfare, and sustainable aquaculture. The objectives of this paper are to review the latest status of Clarias catfish, improvement technologies used, challenges, constraints, and strategies to increase and maintain national production. In terms of seedlings production, the existing technology is relatively well-established with available segmentation in fingerling production. As for grow-out, many innovations such as the use of probiotics, biofloc, aquaponics, RAS, and IMTA provide opportunities for various business scales. The availability of technology based on a biotechnical approach enables to improve and maintain the sustainability of national Clarias production. The progress of Clarias farming in the last decade should be suggested as a model for other potential species. It is recommended that genetically improved Clarias by utilizing the potential of local catfish should be applied to produce specific advantages for development in certain areas and to increase business productivity.
Phagocytes response to dietary probiotics SEAL and Aeromonas hydrophila infection in red tilapia (Oreochromis sp.)
Authors: Purwanto A K R , Larasati B S , Istiqomah I , Isnansetyo A
Published: April 2021

This study focusses on the effect of the probiotic application on the phagocytosis activity, phagocytic index, and respiratory burst in red tilapia nilasa strain infected with Aeromonas
hydrophila. Yeast and bacterial strains of different origins (Sacharomyces sp. FNCC3015, Enterobacter sp. JC10, Aeromonas sp. JC33, and Lactococcus sp. JAL12) were administered to fish in daily, and three-day intervals at a dose of 5x104 CFU/gram feed. The control groups were only administered with fish pellets with saline buffer. Fish were infected with A. hydrophila in the LD70 dose on 23rd day of treatment. Phagocytic activity of blood leukocytes and blood respiratory burst were examined at one and two months of probiotic application, and 7 days after pathogenic bacteria infection. Administration of yeast and bacterial strains to fish before A. hydrophila infection elevated and prolonged phagocytic activity of blood leukocytes at the first and second months of application. No significant improvement of the phagocytic index and blood respiratory burst was found in the present study. It is therefore concluded that probiotics application at three-day interval is sufficient to stimulate and enhance the phagocytes performance of red tilapia nilasa strain before and after A. hydrophila infection.
Complement system activation in red tilapia (Oreochromis sp.) orally administered with probiotics SEAL
Authors: Dhanarso P , Yunissa H , Istiqomah I , Isnansetyo A
Published: April 2021

The purposes of this study were to determine the effect of probiotic application on the non-specific humoral immune system in red tilapia infected with Aeromonas hydrophila in a laboratory and field trial. Yeast and bacterial strains of different origin (Sacharomyces sp., Enterobacter sp. JC10, Aeromonas sp. JC33, and Lactococcus sp. JAL12) were administered to fish in daily and three day intervals at a dose of 5x104 cfu/gram feed. Fish were infected with A. hydrophila in the LD70 dose on 23rd day of treatment. All parameters were examined at one and two months of probiotic application, and 7 days of pathogenic bacteria infection. The results showed that dietary probiotics enhanced and prolonged serum antibacterial activity and total plasma protein. All probiotic application intervals induced higher bactericidal complement activity than the controls. Data on total plasma protein also indicated an increased in the humoral factor of probiotics treated fish. In the case of A. hydrohila infection, only the daily treatment of probiotics was able to keep the complement bactericidal activity of higher than the control. Field application of the probiotics required the probiotic doses of at least 105 cfu/gram feed to obtained an improve complement bactericidal activity.
Monitoring of water quality in the catfish (Clarias sp.) farming in Tuban Regency
Authors: Caesar N R , Yanuhar U , Raharjo D K W P , Junirahma N S
Published: April 2021

Fish need a decent environment for their life and livelihood. Types of fish that have different respiratory organs such as catfish can survive in extreme water conditions. However, in order to grow and develop naturally in a cultured environment, they need optimum water quality. This study aimed was to determine the quality of water in catfish aquaculture ponds in three partner locations for Community Service activities in Tuban Regency, East Java. The method used in this research is descriptive, with 3 points of location for water sampling, namely, in Jenggolo Village (A), Tegalagung Village (B), and Campurejo Village (C), Tuban Regency. The results of the study showed that the highest temperature in the pond in Campurejo Village was 30.2 ºC. The highest pH in the pond in Tegalagung Village is 7.59. The highest dissolved oxygen in the pond in Jenggolo Village was 13.4 mg L-1. The highest nitrate level was in the pond in Tegalagung Village, namely, 25 mg L-1. The highest phosphate content in the pond in Tegalagung Village. Furthermore, the highestTotal Ammonia Nitrogen(TAN) levels are in the pond in Tegalagung Village, which is 16.6 mg L-1. Based on the results, the water quality parameters were classified as great. However, some parameters are less than optimal at different locations. Water quality management needs to be developed to optimize the growth of catfish.
Does gender equality in salt community business decision exist?
Authors: Kurniawan T , Arthatiani F Y , Luhur E S
Published: April 2021

The salt business is not only conducted by the salt aquaculture. Salt aquaculture requires their families to help them producing salt. It is still not visible that there is gender equality in this business. However, there is no gender equality in the salt aquaculture business in Pati Regency in this research hypothesis. Thus, the question arises whether all salt aquaculture always make with their family or are carried out by the salt aquaculture themselves? This paper aimed to analyze the role of gender equality in decision making in households, both in domestic and public activities. This study conducted in 2012 with data updating in 2018 analyzed in 2020—the data took using questions guideline at Pati Regency. This research’s primary funding was the investment decision made together in this district’s family together. Training or socialization was still only given to the head of the family. It would be better if the wife also gave financial training.
Egg diameter of female silver rasbora (Rasbora argyrotaenia) at different gonadal maturity stage
Authors: Salmatin N , Mubarak A S , Budi D S
Published: April 2021

As a new aquaculture species, silver rasbora (Rasbora argyrotaenia) has a high demand for consumption and ornamental fish in Indonesia and its surroundings. The aim of this study was to measured egg diameter in female silver rasbora at different maturity stages. This study was conducted in February 2020 at instrument laboratory Universitas Airlangga, Banyuwangi Campus, Indonesia. A total of 16 females of silver rasbora with a weight of 1.73±0.08 g and length of 5.39±0.13 cm was obtained aquaculture installation of Universitas Airlangga, Banyuwangi Campus, Indonesia. Based on the result, the egg diameters were observed in II, III, and IV maturity stage in the amount of 17.96 ± 1.88 µm, 47.15 ± 10.07 µm, and 83.02 ± 4.40 µm. This information will reach our knowing of the maturation cycle of silver rasbora and also improve artificial techniques of culturing fish for commercial purposes and conservation stocking.
Preliminary study of nitrogenous fixation bacteria exploration under palm tree vegetation on peatland ecosystem
Authors: Lubis S S , Andriyono S
Published: April 2021

The peat ecosystem area has the potential for bacteria that have the potential to act as nitrogen fixers. These bacteria can be applied in various human activities. In fishery activities, nitrogen is an essential component for plankton growth as a live feed. Besides, the ideal N and P components will affect the abundance of plankton in the waters. In this study, the Isolation of candidate bacteria from the peat ecosystem area under palm tree vegetation was carried out in Trumon District, South Aceh. Different depths in the sample soil are an essential parameter, namely the depths of 0-15 cm, 15-30 cm, 30-50 cm. The isolation method was carried out with a scatter plate using Jensen media and obtained 25 isolates which were bio fertilizer candidates. Biodiversity analysis was also carried out to test the three soil depths of the isolated source. A depth of 15 cm shows an isolate diversity pattern that is almost the same as a sample depth of 30 cm.
Biofloc formation without occurrence of cultured organisms (P. vannamei post-larvae) to sustain high density of biofloc concentration - A preliminary study
Authors: Harun A A C , Ikhwanuddin M , Kasan N A
Published: April 2021

Carbon-nitrogen ratio, micro-fauna abundance, water flow rate, water quality parameters were several factors studied by researchers. Unfortunately, main nutrient source and occurrence of organisms were as critically important to be investigated for biofloc formation. In this study, biofloc was formed without the occurrence of organisms (P. vannamei post-larvae) with the additional of an economical nutrient source and inoculum to speed-up and increase the concentration of biofloc formation. The triplicate experimental set-up was prepared under two condition - Treatment A (30% protein pellet feed and molasses) and Treatment B (30% protein pellet feed, molasses, wheat flour, urea, superphosphate and clay) where P. vannamei post-larvae was used as control of each treatment. Water quality parameters, biofloc volume and P. vannamei post-larvae survival rate were observed within 30 days. There was no significant difference (P < 0.05) between the water quality parameters, however, biofloc volume showed a significant difference with and without the occurrence of P. vannamei. Treatment B shows a progressive result where biofloc volume was indicated up to 90.0±4.58 mL/L at day 30. Formation of biofloc without the addition of P. vannamei post-larvae was successful within 5 days with the addition of inoculum and can be used as a starter stock in forming biofloc.
Recommendations for fisheries management in FMAs number 711 and it’s relationship with regional fisheries programs in Batam City, Riau Islands Province
Authors: Wijaya R A , Muliawan I , Hafsaridewi R , Suryawati S H , Pramoda R
Published: April 2021

Ecosystem approach for Fisheries Management (EAFM) has been initiated by the Ministry of Marine Affairs and Fisheries (MMAF) since 2010. In 2014, there is a recommendation for fisheries management based on EAFM in the Fisheries Management Areas (FMAs) number 711. The relationship between recommendations and fisheries management programs in the regions is the focus of this study. This study aims to examine the relationship between fisheries management programs in Batam City and fisheries management recommendations in FMAs number 711. The research was conducted through a qualitative approach. Data collection was carried out through in-depth interviews with key informants from the Riau Islands Province Marine and Fisheries Department, Batam City and Tanjung Pinang Fisheries Department, MMAF representatif from fish quarantine quality control and safety of fishery products agency (BKIPM) and directorate general of supervision of marine and fishery resources (PSDKP). The data analysis was conducted in a descriptive qualitative. The study show that the fishing domain has a strong relationship between government programs and recommendations for improving capture fisheries management. Meanwhile, the domain of fish resources, habitat and ecosystem domain, social domain, economic domains and institutional domain show a weak relationship. Recommendations for improved management based on the ecosystem approach that have been formulated have not become the basis for developing fisheries management programs by regional management agencie.
Life History and Length Based-Spawning Potential Ratio (LB-SPR) of Exploited Demersal Fish Stock (Upeneus sp) in Sunda Strait.
Authors: Yonvitner  , Kurnia R , Boer M
Published: April 2021

Length Based-Spawning potential ratio (LB-SPR) is the most popular technique in worldwide that use for data-poor fisheries management. Based on this situation, LB-SPR tries to apply in demersal fish is Kuniran (Upeneus sp) in small scale fisheries search in Sunda Strait to learn about the sustainability potency both of maturity and recruitment potency from spawning potency ratio. Length data was collected by team research from 2014 to 2019 (except 2017, there is no sampling activity), which from Bogor University. Research result show that asymptotic length (L∞)is 302,10 mm, natural mortality (M) 0,49, Bartalanffy growth (k) 1,03. The length at 50% maturity size (Lm50) is 134,80 mm, length at 95% mature size (Lm95) is 147 mm and relatively higher than the selectivity size. The spawning potential ratio found at 1-6% with the annual average is 2% per year. The conclusion is this research shown that recruitment potency and recovery of depleted stock relatively low and potential un-sustain. The life history and LB-SPR information need to formulate a new strategy to manage size selectivity and fishing intensity in the Sunda Strait.
Histological structure of striped catfish (Pangasius Hypophthalmus) skin from different body size (age) and its relation to the quality of gelatin based on the melting point
Authors: Hidayati D , Alfarisy M U , Khairunissa  , Kurniawan F , Prasetyo E N , Luqman A , Sa’adah N N
Published: April 2021

Gelatin is a protein derived from collagen denaturation. Currently, fish gelatin has been developed as an alternative to halal gelatin. Fish gelatin can be extracted from the skin of several fish including striped catfish (Pangasius hypophthalmus), because the skin’s connective tissue contains a lot of collagen. In industrial applications, melting point is a very important characteristic of gelatin. The biological factors of raw materials such as the size or age of fish are thought to influence the content of collagen, thereby affecting the melting point of gelatin. The aim of this study was to compare the histological structure of the striped catfish skin at different body sizes, especially the observation of collagen in the skin’s connective tissues and to determine its relationship with the quality of its gelatin product based on melting point. The gelatin pre-treatment was performed using acid-base treatment, extraction with distilled water (55°C) were conducted prior to melting point measurement. The results of histological analysis showed that the connective tissue in the skin of larger fish contained thicker stratum compactum and thinner of stratum spongiosum. The melting point of large catfish skin gelatin has a higher melting point (25.5 °C) than the smaller size (24 °C).
The inclusion of moringa leaf extract fermentation in commercial feed to enhance feed conversion ratio and specific growth rate of tambaqui fish, Colossoma macropomum.
Authors: Veronica D R , Martaningrum E T , Agustono  , Lokapirnasari W P
Published: April 2021

Probiotics could be used as an alternative substitute for Antibiotic Growth Promoter (AGP). One of the bacteria that have the potential as a probiotic wasLactobacillus acidophiluswhich was able to secrete digestive enzymes that could help digestion and absorption of feed nutrients. The activity of probiotic bacteria could be stimulated by giving Moringa leaf extract through the process of breaking down oligosaccharides into lactic acid. The purpose of this study was to determine the effect of giving Moringa leaf extract,L. acidophilusprobiotic, and the interaction between Moringa leaf extract andL. acidophilusprobiotic in commercial feed on the specific growth rate and feed conversion ratio of Tambaqui fish. The results showed that administration of Moringa leaf extract and administration ofL. acidophilusprobiotics to commercial feed with different doses did not have a significant effect (p> 0.05), but the interaction of the combination of Moringa leaf extract andL. acidophilusprobiotics gave a significant effect ( p <0.05) on the specific growth rate and feed conversion ratio of Tambaqui fish, namely the A1B2 treatment (4.03% per day) for the specific growth rate and A2B1 treatment (0.92) for the feed conversion ratio.
Dry matter, crude fiber and nitrogen free extract contents of Seligi leaf (Phyllanthus buxifolius) powder fermented with different duration and probiotic’s dose as a fish feed ingredient
Authors: Vitanti R Y , Lamid M , Lokapirnasari W P , Amin M
Published: April 2021

Seligi (Phyllanthus buxifolius) is a herbaceous plant which still rarely used as feed additives. Seligi has a high crude fibre and low protein so it needs to be improved by fermentation using probiotics. The fermentation process is influenced by duration and dose. This study aims to determine whether there are effects and interactions of duration and dose of probiotics on the content of dry matter, crude fibre and nitrogen free extract (NFE) in Seligi leaves. This study is experimental research with factorial completely randomized design with 2 factors, namely the duration of fermentation, consisting of 2 treatments, 5 and 7 days, while the other factors are the dose, consisting of 4 treatments namely 0%, 2%, 4% and 6%. The results showed that there was an effect of fermentation duration on dry matter, which on day 5 produced the highest dry matter, but there was no dose-effect and no interaction. In crude fibre, there is an effect of probiotic dose where at a dose of 2% it produces the lowest crude fibre, but there is no effect on the duration and there is no interaction. In the NFE, there was no influence and interaction between time and dose.
Histopathological profile of kidney and liver organs of mullet fish (Liza subviridis) exposed by lead (Pb) and mercury (Hg) in Estuaria Lampon Banyuwangi, East Java
Authors: Apriliana A A , Sulmartiwi L , Lutfiyah L
Published: April 2021

Estuaria Lampon waters that are close to gold mining and polluted by heavy metals Lead (Pb) and mercury (Hg). There is one of the pollutants to aquatic organisms. The purpose of this study was to determine whether there are histopathological changes organ of mullet fish (Liza subviridis) and heavy metals content samples in Estuaria Lampon. The method of making histopathological preparations using HE staining and reading the scoring preparations were analyzed by Kruskal Wallis test with Mann Whitney test. Testing of heavy metal content using AAS. The results of microscopic observations showed damage in the form of necrosis, fat degeneration, and congestion. In the kidney organ there are many categories of damage that is necrosis 64,2% at station I, and in the liver the most damage occurred was fat degeneration 69% at station I. This value indicates that damage area >50% from an average of 4 visual fields.
Food habits of greenback mullet Liza subviridis at Lampon Estuary, Banyuwangi, East Java
Authors: Langsa N S , Sulmartiwi L , Lutfiyah L
Published: April 2021

The mullet is a fish that dominates the Lampon Estuary. These waters contain Pb and Hg that exceed the threshold. This study aims to look at the mullet food habits, water quality, and the relationship between water quality and mullet food habits. This research was conducted for three months, from November 2019 to January 2020 at Estuary Lampon, Pesanggrahan, Banyuwangi, East Java. This research used a survey method (non-experimental) and observation method. The number of fish samples was 171 fish. Based on the analysis, the composition of mullet fish feed consists of Diatoms, Flagellates, Chlorophyceae, Bacillariophyta, Xanthophyta, and Dinoflagellates. The composition of plankton as food in polluted waters obtained a different type of plankton from normal waters. Based on the index value of food choices, the most popular food is Diatoms and can be categorized as herbivorous fish.
Combination chrome and mangrove (Rhizophora mucronata) bark crude extract on Epinephelus sp. leather quality
Authors: Dewi G S P , Saputra E , Abdillah A A
Published: April 2021

Almost all tanning leather industry used chrome sulphate mineral because it has a high tannic power and produce tanned leather with good quality. However. as much as 25% chrome in tanning is wasted as liquid waste. Chrome as waste product from tanning process is categorized as dangerous waste which is toxic to the environment. The aim of this study was to determine the effect of combination chrome and mangrove bark crude extract on tanned Epinephelus sp. skin. The results showed that the best grouper skin was tanned on 8% tanner extract. which was demonstrated a tensile strength value by 228.91 kgf/cm2, tear strength by 23.43 kgf/cm, elongation by 24.03%, and shrinkage temperature by 55.23° C. This studied promised application of mangrove extract could replace chrome as tanned agent for greenly method.
Substitution of Maggot Flour Fermentation (Hermetia illucens) in Commercial Feed Towards The Level of Crude Protein and Crude Fat in Catfish Meat (Clarias sp.)
Authors: Permatasari S A , Rahardjo B S , Nindarwi D D
Published: April 2021

This study aims to determine the effect of fermentation substitution maggot flour in commercial feed on crude protein and crude fat of catfish. The research method used is an experimental method. The treatment used is substitution of maggot flour in commercial feed, P0 (99% commercial feed+1% tapioca flour), P1 (94% commercial feed+5% maggot flour+1% tapioca flour), P2 (89% commercial feed+10% maggot flour+1% tapioca flour), P3 (84% commercial feed+15% maggot flour+1% tapioca flour) and P4 (79% commercial feed+20% maggot flour+1% tapioca flour). Data analysis used Analyze Of Variance (ANOVA) and continued with Duncan’s Multiple Range Test. The results of this study were the best crude protein content of catfish (Clarias sp.) at a substitution dose of 10% maggot flour fermentation with crude protein content of 20.3250a ± 0.042. The best crude fat content of catfish (Clarias sp.) was produced at substitution doses of maggot flour fermentation of 5%, 10%, and 15% with crude fat content respectively 1.255a ± 0.1044, 1.503b ± 0.0737 and 1.523 c ± 0.0345.
Size distribution of Anchovy caught by “purse seine waring” in Semarang and Demak waters - Central Java
Authors: Pebruwanti N , Fitrani I
Published: April 2021

Anchovies (Stolephorus sp) is one of the pelagic fish resources which has economic value and abundant in Indonesia waters. The fishing gear to be used to catch Anchovies is the waring purse seine. Demak is one of the fishing base of the waring purse seine in Central Java. This study aims to analyze the relationship between length-weight, the frequency distribution of anchovy length in Semarang, and Demak waters. This research used an explorative survey method, while the measuring method of fish samples was purposive sampling. Data for Anchovy were obtained in May and October 2018. The correlation between the length-weight of Anchovy in May obtained a value of b=2.759. The longest Anchovy (May) measuring 76.69 mm, weighing 8.8 g, while the shortest size was 34.17 mm, weighing 1.97 g and mode at the mean value of 58.50 mm. The correlation between Anchovy length-weight (October) obtained a value of b =2.126. While the longest Anchovy measures 94.06 mm, weighing of 5.94 g, and the smallest size was 43.68 mm, weighing of 1.44 g while the mode was 65.30 mm in the mean. The catch of Anchovy in October was more feasible to catch than in May.