SOCIO-ECONOMIC STUDY OF SEAWEED FARMERS (Chlorophyta) IN SEJOLI VILLAGE, MOUTONG DISTRICT, PARIGI MOUTONG REGENCY

Thu, 25 Jun 2026 00:00:00 +0800

Seaweed cultivation is a fisheries subsector with high economic value and plays an important role in improving the welfare of coastal communities. Sejoli Village, Moutong District, Parigi Moutong Regency has great potential in developing Chlorophyta seaweed, but faces obstacles such as limited capital, simple cultivation technology, and weak communication between farmers. This study aims to determine seaweed farmers' social and economic conditions in Sejoli Village. The research method used is descriptive qualitative with 25 respondents, selected based on the criteria of active farmers. Data were obtained through observation, interviews, questionnaires, and documentation, then analyzed descriptively. The results show that socially, the majority of farmers are of productive age (21–50 years), predominantly male (92%), have basic education, and have strong social interactions through cooperation activities and farmer groups. Economically, business capital ranges from IDR 4,000,000 to IDR 20,000,000 per planting season, total production costs IDR 101,160,000, total revenue IDR 197,405,000, and net income IDR 96,245,000 per cycle.

COASTAL RESOURCE ASSESSMENT: SUITABILITY AND CARRYING CAPACITY INDICES OF PANGANDARAN EAST COAST, WEST JAVA

Shafira Bilqis Annida, Faqih Baihaqi, Riyanti Rahmawati, Yusfi Sri Wahyuningtias — Wed, 17 Jun 2026 00:00:00 +0800

This study aims to evaluate the tourism suitability index and carrying capacity of the Pangandaran East Coast area, West Java, as a tourist destination based on beach recreation and marine activities. This research was conducted in April 2025. The research method involved primary data collection through field surveys of environmental parameters such as beach conditions, water quality, and supporting facilities, as well as secondary data from relevant agencies. The analysis was conducted using a quantitative descriptive approach with the tourism suitability index formula and the carrying capacity of the area. The results showed that Pangandaran East Beach has a tourism suitability index for beach tourism, camping and swimming activities in a row of 97.3%; 91.7%; 85.9% which is classified in the “very suitable” category. The carrying capacity of the area for beach recreation activities was calculated at 253 people/day, then for swimming activities at 189 people/day and camping at 710 people/day which reflects the maximum capacity of visitors that can be received without disturbing the beach ecosystem or reducing the quality of the tourist experience. This approach provides important recommendations for tourism managers to optimize the management of visitor numbers and improve supporting facilities to maintain the sustainability of the area. With calm beach characteristics and good accessibility, Pangandaran East Beach has great potential as a leading destination in West Java for marine recreation. This research is expected to be a reference for the development of sustainable tourism policies in coastal areas.

THE EFFECT OF SOAKING IN KETAPANG LEAVES ON THE PRODUCTIVITY PERFORMANCE AND COLOR QUALITY OF ZEBRA FISH (Danio rario)

Asrullah Akbar Anwar, Risfany Risfany , Dheni Rossarie, Sri Wahyuni Firman — Wed, 17 Jun 2026 00:00:00 +0800

Zebra fish (Danio rerio) is a widely cultivated ornamental freshwater species valued for its distinctive body stripes. However, color fading during the rearing period remains a common problem for fish farmers. Ketapang leaves (Terminalia catappa) contain various bioactive compounds, including tannins, flavonoids, and saponins, which are known to improve fish health and potentially enhance pigmentation. This study aimed to determine the effect of ketapang leaf soaking water on the improvement of color quality in Zebra fish (Danio rerio). The research was conducted for 28 days using a Completely Randomized Design (CRD) with five treatments and three replications: A (control/100% freshwater), B (25% ketapang leaf extract), C (50%), D (75%), and E (100%). The observed parameters included survival rate, absolute length growth, absolute weight growth, color quality, and water quality (pH, DO, and temperature). Color quality was assessed using visual color grading and evaluation by 50 panelists. The results indicated that the use of ketapang leaf soaking water significantly influenced the enhancement of color quality in Zebra fish. Treatment D (75% ketapang leaf soaking water) produced the highest color brightness score, both visually and based on panelist assessments. The highest survival rate was recorded in treatment E (100%), while the highest weight growth occurred in treatment A (control). Water quality parameters, including pH, DO, and temperature, remained within optimal ranges for Zebra fish culture throughout the study

COMPARATIVE STUDY ON THE EFFECTIVENESS OF HONEY, COCONUT WATER, AND METHYL TESTOSTERONE IN THE MASCULINIZATION OF NILE TILAPIA (Oreochromis niloticus)

Nur Islamiyah, Andre Rachmat Scabra, Muhammad Sumsanto — Wed, 17 Jun 2026 00:00:00 +0800

Penelitian ini bertujuan untuk menganalisis perbandingan efektivitas madu, air kelapa, dan metil testosteron dalam proses maskulinisasi ikan nila (Oreochromis niloticus). Metode yang digunakan adalah eksperimen dengan empat perlakuan, yaitu kontrol (P1), metil testosteron (P2), air kelapa (P3), dan madu (P4). Parameter yang diamati meliputi persentase maskulinisasi, survival rate (SR), berat mutlak, specific growth rate (SGR), serta kualitas air. Hasil penelitian menunjukkan bahwa perlakuan metil testosteron menghasilkan tingkat maskulinisasi tertinggi sebesar 90,29% ± 3,97, diikuti oleh madu sebesar 70,79% ± 13,34, air kelapa 49,29% ± 8,61, dan kontrol 35,97% ± 8,64. Nilai SR berkisar antara 68–78% dan masih tergolong baik. Pertumbuhan ikan yang diamati melalui berat mutlak dan SGR tidak menunjukkan perbedaan nyata antar perlakuan, meskipun nilai tertinggi cenderung diperoleh pada perlakuan madu. Parameter kualitas air selama penelitian berada dalam kisaran optimal untuk pemeliharaan ikan nila. Berdasarkan hasil tersebut, metil testosteron merupakan perlakuan paling efektif dalam maskulinisasi, sedangkan madu berpotensi sebagai alternatif bahan alami yang lebih ramah lingkungan.

ENZYMATIC ACTIVITY OF LACTIC ACID BACTERIA ISOLATES FROM THE GASTROINTESTINAL TRACT OF NILE TILAPIA (Oreochromis niloticus) FROM LAKE RANAU, WEST LAMPUNG AS PROBIOTIC CANDIDATES

Hilma Putri Fidyandini, Rika Iwan Syahputri, Agus Setyawan, Limin Santoso — Wed, 17 Jun 2026 00:00:00 +0800

Tilapia (Oreochromis niloticus) cultivated in Lake Ranau, West Lampung, possesses several superior characteristics, including good growth performance, thick flesh, savory taste, and the absence of muddy odor. These advantages are presumed to be associated with the presence of gut microbiota, particularly lactic acid bacteria (LAB), which have potential as probiotics. This study aimed to obtain lactic acid bacteria isolates from the gastrointestinal tract of tilapia, evaluate their enzymatic activities, and determine potential probiotic candidates. The research employed an exploratory method through bacterial isolation, LAB screening using de Man Rogosa Sharpe Agar (MRSA), enzymatic activity assays, morphological and biochemical identification, and molecular analysis based on 16S rDNA sequencing. The results showed that 12 bacterial isolates were successfully grown on MRSA medium. Ten isolates exhibited amylase activity, while all isolates demonstrated lipase and protease activities, indicated by the formation of clear zones around the bacterial colonies. Isolate UNR.11 showed the highest enzymatic activities with clear zone diameters of 25.5 ± 2.80 mm for amylase, 20.4 ± 1.2 mm for lipase, and 22.7 ± 4.06 mm for protease activity. Based on macroscopic, microscopic, biochemical, and 16S rDNA sequence analyses, isolate UNR.11 was identified as Bacillus cereus with 99% similarity. This isolate has potential as a probiotic candidate due to its ability to produce digestive enzymes, namely amylase, lipase, and protease, which may support digestion and nutrient utilization in fish.

FATTY ACID BIOENCAPSULATION IN Daphnia sp. TO ENHANCE THE GROWTH AND SURVIVAL OF CATFISH (Clarias sp.) LARVAE

Sheny Permatasari, Andri Hendriana, Imam Tri Wahyudi — Wed, 17 Jun 2026 00:00:00 +0800

EFFORTS TO INCREASE THE SHELF LIFE OF RED NILE FISH MEATBALLS (Oreochromis niloticus) BY ADDING LIQUID SMOKE

Wed, 17 Jun 2026 00:00:00 +0800

Red tilapia fish meatballs are a popular processed fishery product because they have a taste liked by various groups and are relatively affordable, making them accessible to all. However, red tilapia fish meatballs have a short shelf life, so safe, natural preservation methods are needed; one is liquid smoke. This study aims to determine the effects of soaking time and the addition of liquid smoke on the shelf-life of red tilapia fish meatballs (Oreochromis niloticus) during a shelf-life test. This study used a Completely Randomized Design (CRD) with two treatment factors: soaking time (30 minutes and 45 minutes) and liquid smoke at 1.5% and 3%. Analysis of red tilapia fish meatballs included testing for water content, ash content, total acid, total phenols, texture, a sensory test, and a shelf-life test. The results showed that the addition of liquid smoke significantly increased ash content and total acid, decreased water content, improved texture, and increased the shelf life of fish meatballs. The total acid analysis yielded values of 0.14%-0.36%, and the total phenol content yielded values of 0.06%-0.15%. Meanwhile, the analysis of fish meatball products included texture characteristics such as hardness (254.8-351.4), cohesiveness (0.87-0.93), and springiness (0.83-1.00). The moisture content analysis yielded values of 5.07%-5.73%, and the ash content analysis yielded values of 1.85%-2.82%. Based on the research results, liquid smoke is an effective natural preservative that improves the quality and shelf life of red tilapia fish meatballs.

PROXIMATE COMPOSITION OF FRESH AND PROCESSED MANGROVE SNAIL Telescopium telescopium

Bernita br. Silaban, Firly Velvisa, Johanna Tupan, Esterlina E. E. M. Nanlohy — Wed, 17 Jun 2026 00:00:00 +0800

The mangrove snail Telescopium telescopium has long been utilized by communities in Olong Village, Central Maluku, as a food source. However, scientific information regarding the nutritional composition of fresh and processed Telescopium telescopium is still limited. This study aimed to determine the proximate composition of fresh and processed mangrove snail Telescopium telescopium, including crispy fried, pepes, and satay products. This research employed an experimental method. The treatments consisted of fresh Telescopium telescopium (A₀), crispy fried (A₁), pepes (A₂), and satay (A₃). The parameters analyzed included moisture, ash, fat, protein, and carbohydrate contents. The results showed that the proximate composition of fresh mangrove snail consisted of 72.52% moisture, 1.02% ash, 0.70% fat, 23.88% protein, and 1.88% carbohydrates. After processing, changes in proximate composition were observed. The crispy fried contained 28.59% moisture, 4.75% ash, 11.75% fat, 33.03% protein, and 21.88% carbohydrates. The pepes product contained 65.29% moisture, 2.78% ash, 4.76% fat, 24.36% protein, and 2.81% carbohydrates. Meanwhile, the satay product contained 49.10% moisture, 3.22% ash, 8.22% fat, 27.34% protein, and 12.20% carbohydrates. Therefore, processing methods affect the proximate composition of mangrove snail meat Telescopium telescopium.

CARBON POTENTIAL OF MACROALGAE IN THE COAST OF KAUR REGENCY, BENGKULU PROVINCE

Wed, 17 Jun 2026 00:00:00 +0800

Macroalgae as one of the productive tropical coastal ecosystems have the potential as primary producers in fixing marine organic carbon, as carbon absorbers, and carbon biosequesters. Kaur Regency has complete macroalgae biodiversity including the Chlorophyta, Rhodophyta and Phaeophyta groups estimated to have potential blue carbon reserves. Research related to macroalgae in Kaur Regency is still limited to the distribution of macroalgae biodiversity and density, so, it is necessary to study the above ground carbon stock of macroalgae as a baseline for coastal blue carbon management in the future. This study aims to examine the carbon content of macroalgae species found in the coastal of Kaur Regency. Field surveys were conducted to collect shoot density and harvesting data of macroalgae species. Macroalgae data were collected using the quadrat transect method measuring 1 x 1 m. Macroalgae samples were tested in the laboratory to calculate the bound carbon value of macroalgae types. The result showed that macroalgae lived on the coast of Kaur Regency have carbon potential vary among the species. Carbon potential is dominated by Padina minor with 585.26 gC/m², while Tricleocarpa fragilis has the lowest carbon value with 0.86 gC/m².

TEMPORAL TRENDS IN FISHING GEAR COMPOSITION AND FLEET MODERNIZATION IN EAST NUSA TENGGARA 2019–2024

Joi Alfreddi Surbakti, Alexander S. Tanody — Wed, 17 Jun 2026 00:00:00 +0800

East Nusa Tenggara (NTT) is one of Indonesia's most biologically productive fishing zones, yet its capture fisheries sector has experienced a sustained contraction in gear deployment over the 2019–2024 period. This study analyzes temporal trends in fishing gear composition and fleet structure across all 22 regencies using an integrated provincial dataset of 3,919 gear-observation records. Province-wide gear counts fell from 59,161 units in 2019 to 29,960 units in 2024 a decline of 49.4%. A Pettitt change-point test places the structural break between 2021 and 2022, consistent with the regulatory and economic disruptions of that period. A negative binomial regression confirms that year, regency, vessel size class, and water type are all significant predictors of gear count. Shannon diversity indices show a sharp contraction in gear portfolio breadth (mean H' from 1.74 in 2019 to 1.55 in 2024), with substantial inter-regency heterogeneity. Ward's hierarchical clustering identifies four distinct fleet archetypes: gill-net–dominant, line-gear dominant, mixed-gear transitional, and trap-based coastal systems. Non-motorized boat gear declined by 60.4%, while medium-class vessels (21–30 GT) expanded by 339%. The findings indicate a structural shift toward motorized, selective gear systems, with implications for sustainable management, effort licensing, and spatial planning in eastern Indonesian waters.

THE FATE OF THE ‘MARITIME GIANT’: WHY HAS THE FISHERIES SECTOR'S CONTRIBUTION TO GDP REMAINED BELOW 3% FOR A DECADE?

Wed, 17 Jun 2026 00:00:00 +0800

The fisheries sector is a vital pillar of Indonesia's maritime economy, yet its contribution to the national GDP continues to face structural stagnation. This study aims to analyze the influence of specific fisheries sector variables, namely: Domestic Investment (PMDN) in Fisheries, Foreign Investment (PMA) in Fisheries, Fisheries Production Volume, and Fisheries Export Value on the Fisheries GDP in Indonesia for the 2015-2025 period. The analytical method employed is multiple linear regression using the double log model. The results indicate that simultaneously, all independent variables in the fisheries sector significantly influence the Fisheries GDP. However, partially, only Domestic Investment (PMDN) in Fisheries has a positive and significant impact. Conversely, Foreign Investment (PMA) in Fisheries, Fisheries Production Volume, and Fisheries Export Value do not show a significant effect. The lack of significance among these variables suggests structural constraints, such as low product downstreaming, logistical inefficiencies, and the negative impact of Illegal, Unreported, and Unregulated (IUU) Fishing, which leads to a leakage of economic value-added before it can be recorded in the national GDP. This study recommends that the government strengthen the domestic capital base and tighten maritime surveillance to suppress fish poaching. A downstreaming strategy for fisheries export products is key to ensuring that physical production capacity can be optimally converted into economic value-added for national GDP growth.

OPTIMIZATION OF DIFFERENT TYPES OF ATTRACTANTS IN COMMERCIAL FEED TO INCREASE ABSOLUTE WEIGHT GROWTH AND MOLTING FREQUENCY OF FRESHWATER LOBSTER (Cherax quadricarinatus)

Gilang Ramadhan Rasendriya Fawwas, Sri Oetami Madyowati, Achmad Kusyairi — Wed, 17 Jun 2026 00:00:00 +0800

ECONOMIC VALUATION OF GRONJONG WARITI ECOTOURISM AREA IN KEDIRI REGENCY

Rachintha Fica Novita Sari, Totok Hendarto, Rosidah Wahyu Ningtyas — Wed, 17 Jun 2026 00:00:00 +0800

Ecotourism development in Indonesia requires optimal management of available resource potential. Gronjong Wariti Ecotourism, located in Mejono Village, Plemahan District, Kediri Regency, is a community-based tourism destination that optimizes the balance between terrestrial ecosystems and river aquatic environments into fishery ecotourism. This tourism site adopts an educational tourism concept with facilities including tilapia, catfish, and comet fish ponds for live feeding activities, as well as fish therapy using Garra rufa. This research aims to analyze visitor assessments and calculate the economic value of Gronjong Wariti Ecotourism area using the Travel Cost Method approach. The study employs a descriptive method with quantitative and qualitative approaches through data collection techniques including observation, interviews, questionnaires, and documentation. The research sample of 30 respondents was determined using the linear time function formula. Research variables include independent variables namely travel costs, distance, income, education, age, gender, and transportation, as well as the dependent variable of visit demand quantity. The Travel Cost Method is used to calculate the economic value of resources with a regression model to determine the influence of each factor and calculate consumer surplus through Willingness to Pay analysis. The research results are expected to provide recommendations for managers regarding ecotourism area development and contribute academic information about economic valuation of fishery tourism areas.

FECUNDITY AND BIOMASS OF Artemia franciscana FED DIFFERENT FEED TYPES

Wed, 17 Jun 2026 00:00:00 +0800

Artemia franciscana is an essential live food in fish and shrimp hatchery operations, whose nutritional value is significantly influenced by the feed provided during culture. Providing high-quality, cost-effective feed remains a major challenge in the mass production of A. franciscana. This study aimed to evaluate the effect of different feed types on the fecundity and biomass of Artemia franciscana. The experiment was conducted at the Nutrition and Natural Feed Laboratory, Faculty of Fisheries and Marine Sciences, Mulawarman University, over 30 days (August–September 2024). A completely randomized design (CRD) with four treatments and four replications (n = 16 experimental units) was employed. Treatments consisted of P1 (spirulina flour), P2 (soybean meal), P3 (palm kernel cake), and P4 (a mixture of spirulina flour, soybean meal, and palm kernel cake at 1:1:1 w/w ratio). Data were analyzed using one-way analysis of variance (ANOVA) followed by Duncan's Multiple Range Test (DMRT) at a 95% confidence level. Results demonstrated that feed type had a highly significant effect (P<0.01) on the fecundity and biomass of A. franciscana. The highest fecundity was achieved in P4 (100.00 ± 4.40 nauplii/female), followed by P1 (86.00 ± 3.37 nauplii/female), P2 (71.25 ± 2.99 nauplii/female), and P3 (53.75 ± 3.50 nauplii/female). The highest final biomass was similarly recorded in P4 (1.75 ± 0.07 g/L), followed by P1 (1.49 ± 0.06 g/L), P2 (1.23 ± 0.05 g/L), and P3 (0.92 ± 0.05 g/L). All treatments differed significantly from each other based on DMRT (P<0.05). Water quality parameters remained within ranges supportive of A. franciscana survival and reproduction throughout the study. The mixed feed provided a more balanced nutrient profile, yielding the highest reproductive performance and biomass accumulation in Artemia franciscana.

OBSERVATION OF WATER QUALITY FOR THE CULTIVATION OF CANTANG GROUPER IN PULO PANJANG, SERANG BANTEN

Lubi Yazid Al Jazari, Saifullah Saifullah, Muh. Herjayanto — Wed, 17 Jun 2026 00:00:00 +0800

Water is a cultivation medium that serves as a habitat for cultivated organisms. Information regarding its quality standards is necessary for the feasibility of fish culture. Cultivated organisms will experience changes, either directly or indirectly, if the aquatic environment they inhabit is unstable. This study aims to determine the suitability of Pulo Panjang waters for Cantang grouper cultivation based on its water quality standards. In this study, a purposive sampling method was used to determine the observation stations. The research parameters observed in situ were dissolved oxygen using the Winkler method, water depth using measuring tape, water transparency using a Secchi disk, salinity using a refractometer, pH using a pH meter, temperature using a thermometer, and current velocity using the Langrangian method. Moreover, the parameters observed ex situ were nitrate using the APHA method for nitrate measurement and phosphate using the APHA method for phosphate measurement. Observations of the research parameters were carried out three times every two weeks. The results of the parameter measurements obtained were then scored and compared with those of the water suitability class. Observations show that station 1 falls into the marginally suitable category (S3) with a score of 68%, station 2 falls into the marginally suitable category (S3) with a score of 68%, and station 3 falls into the unsuitable category (N) with a score of 64%. These findings indicate that the water quality at stations 1 and 2 is suitable, and station 3 is not suitable for use in Cantang grouper cultivation activity.

INCOME ANALYSIS AND BUSINESS FEASIBILITY OF HOUSEHOLD-SCALE SALTED FISH PROCESSING IN PASAR BANTAL VILLAGE, MUKOMUKO REGENCY

Nur Lina Maratana Nabiu, Zamdial Zamdial, Rama Dhona Hidayati — Wed, 17 Jun 2026 00:00:00 +0800

Salted fish processing represents an important livelihood activity for many coastal households, providing opportunities to increase the value of fishery products while generating additional income. This study assessed the income and financial feasibility of household-scale salted fish processing businesses in Pasar Bantal Village, Teramang Jaya District, Mukomuko Regency. The research was conducted from December 2025 to January 2026 using a quantitative descriptive approach. Data were collected through observations, interviews, and documentation involving 15 salted fish processors selected from the local processing community. Economic performance was evaluated through analyses of production costs, revenue, net income, and Return Cost Ratio (RCR). The results revealed that the average production cost was IDR 12,016,311 per year, while the average annual revenue reached IDR 29,232,000. Consequently, processors obtained an average net income of IDR 17,215,689 per year. The average RCR value was 2.44, indicating that revenues were more than twice the production costs incurred. These findings demonstrate that household-scale salted fish processing in Pasar Bantal Village is financially feasible and capable of generating positive economic returns. Business sustainability is supported by the availability of raw materials, low capital requirements, the utilization of family labor, and relatively stable market demand. The study highlights the potential of salted fish processing as a livelihood diversification strategy that can contribute to strengthening the economic resilience of coastal households.

BUSINESS MODEL CANVAS ANALYSIS OF A PANGASIUS NURSERY FARM IN PASIR GAOK, BOGOR REGENCY

Sat, 20 Jun 2026 00:00:00 +0800

Aquaculture is a rapidly growing food production sector that plays a vital role in national food security. This study aims to analyze the business model of a Pangasius nursery farm located in Pasir Gaok, Rancabungur District, Bogor Regency, using the Business Model Canvas (BMC) framework. A qualitative descriptive approach was employed, with primary data collected through semi-structured interviews, field observations, and documentation. The results indicate that the Pangasius nursery farm serves local collectors, market traders, and individual buyers, offering consistent fish quality and stable pricing. Feed constitutes the largest cost component, while revenue is mainly derived from the sale of fingerlings. The discussion highlights that business success depends on cost efficiency, effective technical management, and partnerships with research institutions that foster innovation and sustainability in aquaculture enterprises.

ANALYSIS OF THE GROWTH RATE AND MOULTING FREQUENCY OF MUD CRAB (Scylla serrata) UNDER DIFFERENT REARING SUBSTRATES

Asti Amalia, Laily Fitriani Mulyani, Muhammad Marzuki — Sat, 20 Jun 2026 00:00:00 +0800

Mud crab (Scylla serrata) is a high-value fishery commodity, but the success of its culture is
still influenced by growth and moulting processes. This study aimed to analyze the effects of
different rearing substrates on the growth rate, moulting frequency, and moulting time of mud
crab. The study was conducted at the Dakota Crab Culture Facility, Mataram City, and the
Aquaculture Environment Laboratory, Aquaculture Study Program, University of Mataram.
An experimental method was used with two treatments, namely P1, a beach sand substrate, and
P2, a beach sand substrate with the addition of mangrove leaves. Rearing was carried out in
crab boxes connected to a Recirculating Aquaculture System (RAS). The main parameters
included moulting frequency, moulting time, absolute weight gain, absolute length growth,
Specific Growth Rate (SGR), and Survival Rate (SR). The data were analyzed using a two
sample t-test assuming unequal variances at the 5% level. The results showed that substrate
differences had no significant effect on any parameter (p>0.05). Descriptively, treatment P2
produced a higher moulting frequency of 0.500±0.534 times/day than P1 at 0.375±0.517
times/day. Moulting time in P2 was also slightly faster, at 38.00±16.4 days, whereas P1 was
39.67±11.3 days. Thus, the combination of beach sand and mangrove leaves tended to be better
for moulting frequency and moulting time, but the differences were not statistically significant.
Keywords: Growth; Mangrove Leaves; Moulting; Moulting Time; Mud Crab; Substrate

EFFECTIVENESS OF MALEIZATION OF TILAPIA (Oreochromis niloticus) SEEDS BY SOAKING IN COCONUT WATER

Sat, 20 Jun 2026 00:00:00 +0800

Market demand, especially the export market, requires tilapia with an average weight of more
than 500 g. To achieve a size of 500 g, farmers experience obstacles requiring a long time,
especially because the growth of female tilapia is slower than male tilapia. The purpose of this
study was to produce a higher ratio of male tilapia seeds. The research design was a completely
randomized design with 2 treatments and three replications. The treatment tested was soaking
tilapia seeds with 40% coconut water compared to the control. Parameters measured included
male sex ratio, survival, biomass and feed conversion. The results showed that coconut water
soaking significantly increased the male sex ratio to 71.8% compared to the control of 56.7%.
The average weight of fish soaked in coconut water was higher with a significant difference of
7.17 g compared to 3.17 and biomass of 1,100 g compared to 571 g. The feed conversion of
treated fish was lower and a significant difference of 1.5 compared to the control of 2.9. The
research results can be used by fish breeders to produce high-quality fry with good production
performance and efficiency in artificial use.

IDENTIFICATION AND PREVALENCE OF Edwardsiella tarda BACTERIA INFECTING TILAPIA (Oreochromis niloticus) AT CV SERAMBI IKAN CENTER, LAMBARO

Fauzia Malina, Suri Purnama Febri, Andika Putriningtias, Retno Sari Putri — Sat, 20 Jun 2026 00:00:00 +0800

Edwardsiella tarda is a gram-negative pathogen that can cause serious disease in fish, including mass mortality. Tilapia fish infected with E. tarda bacteria show clinical symptoms such as sore skin, swelling and decreased appetite. Bacterial identification was carried out at the SKIPM Laboratory, Aceh Besar, to confirm the presence of E. tarda using biochemical tests. The target organs taken for the isolation process are the liver, kidneys and spleen. This research uses a descriptive survey method with sampling using a purposive sampling technique. The results of the research show the morphological characteristics of the bacterial colony which, when viewed from above, is round, flat, intact and whitish in color. The observation table data from the identification results showed that two fish samples with sample codes N5 and N7 were infected with Edwardsiella tarda bacteria in the same target organ, namely the liver. Bacteriological examination through biochemical tests, Edwardsiella tarda bacteria showed negative results in the 3% KOH test, positive in the indole test, and negative in the oxidase test. The prevalence rate of bacterial attacks obtained from the 10 fish samples used was 20% of the total samples.

POLICY ANALYSIS AND EMPOWERMENT STRATEGY BASED ON DIGITAL COOPERATIVES FOR SMALL-SCALE FISHERS

Darmawan Darmawan — Sat, 20 Jun 2026 00:00:00 +0800

Small-scale fishers in Indonesia continue to face structural poverty associated with unequal access to markets, financing, information, technology, and economic institutions. The increase in national capture fisheries production has not always been accompanied by improved fisher welfare, as economic benefits within the fisheries value chain remain unevenly distributed. This study aims to identify the structural factors underlying the disempowerment of small-scale fishers, evaluate the limitations of fishers’ economic institutions, and formulate an empowerment strategy through digital cooperatives. The study employs a descriptive qualitative approach using literature review and secondary data analysis. Data were obtained from documents published by Statistics Indonesia, the Ministry of Marine Affairs and Fisheries, the Ministry of Cooperatives and SMEs, and relevant scientific literature. The analysis was conducted through issue identification, secondary data synthesis, thematic triangulation, and strategy formulation. The findings show that the disempowerment of small-scale fishers is shaped by their weak bargaining position in the value chain, dependence on market intermediaries and informal financing, and the suboptimal functioning of fishers’ cooperatives. Digital cooperatives can serve as an empowerment strategy by strengthening transaction recording, institutional transparency, access to price information, marketing of fish catches, and linkages with formal financial institutions. However, their success requires digital literacy, sound cooperative governance, member trust, digital infrastructure, continuous facilitation, and consistent policy support

STUDY OF SQUID HANDLINE OPERATION TECHNIQUES AND CATCH RESULTS IN ARAFURA WATERS

Sat, 20 Jun 2026 00:00:00 +0800

Arafura waters are one of the main squid (Loligo sp.) fishing areas in Indonesia with an important contribution to national capture fisheries production. This study aims to describe the squid handline operation technique and analyze the types and quantities of catches on KM. Bandar Nelayan 118 based in Benoa Harbor, Bali. The study was conducted in October–November 2023 through direct observation on board, interviews with the captain and crew, and documentation of fishing activities. Data were analyzed descriptively qualitatively. The results showed that squid handline operations were carried out at night with the help of 2000 watt metal halide lamps, using four main techniques, namely bottom fishing (ahe-ahe), mid-line fishing (kokokan), surface fishing (lempang), and sate fishing. Fishing gear is selective and only catches Loligo sp. squid without bycatch. The total catch during the study reached approximately 9,902 kg, with daily fluctuations influenced by currents, baiting techniques, bait color, and the location of the catch. This study demonstrates that squid handline fishing on the KM. Bandar Nelayan 118 is effective, selective, and has the potential to support sustainable capture fisheries in the Arafura Waters.

THE EFFECT OF DIFFERENT FEEDING FREQUENCIES ON THE ABSOLUTE GROWTH OF WHITELEG SHRIMP (Litopenaeus vannamei) SIZE PL 6 (30 DAYS)

Medi Hartono, Indra Wirawan, Muhajir Muhajir — Sat, 20 Jun 2026 00:00:00 +0800

Whiteleg shrimp farming is a significant and leading aquaculture industry in Indonesia. One of the main challenges faced by shrimp farmers is the high cost of feed. Appropriate feeding frequency is crucial to improve feed efficiency, supporting growth, FCR, and survival rates of whiteleg shrimp. This article aims to determine the Effect of Different Feeding Frequencies on the Absolute Growth of Pacific White Shrimp (Litopenaeus vannamei) at the PL 6 stage (30 days old) and their health status, as well as to identify the optimal feeding frequency for achieving peak absolute weight gain and shrimp health. The methodology employed in this study is experimental, with data collected through direct observational methods. The experimental design used is a Completely Randomized Design (CRD) consisting of 4 treatments and 6 replications of varying feeding frequencies: Treatment (A): 3 times per day. Treatment (B): 4 times per day. Treatment (C): 5 times per day. Treatment (D): 6 times per day. The results of this study indicate that the frequency of feeding results in a difference in the growth of vaname shrimp body weight with treatment B with the highest value which will result in profits in vaname shrimp cultivation production.

COMPARATIVE STUDY OF ENDOPARASITE INFECTIONS IN THE DIGESTIVE TRACT OF RED TILAPIA (Oreochromis niloticus) UNDER DIFFERENT AQUACULTURE SYSTEMS

Afriliyanti Harun, Yuniarti Koniyo, Arafik Lamadi, Mita Alvionita — Sat, 20 Jun 2026 00:00:00 +0800

Red tilapia (Oreochromis niloticus) is a freshwater commodity that is widely cultivated and has become one of the most popular fish for consumption among communities. Red tilapia is extensively farmed because it has several advantages, such as rapid growth, tolerance to both low and high temperatures, and euryhaline characteristics. In addition to these advantages, red tilapia farming also has weaknesses, one of which is parasitic infection. One of the causes of decreased productivity is parasite infection. Parasites are microorganisms that can infect many fish species; therefore, the researcher is interested in conducting this study to increase knowledge about the types of endoparasites, which is very important to facilitate handling when fish are infected by endoparasites. This research will be conducted for one month, and fish samples will be collected from different aquaculture systems. Parasite observations will be carried out at the Laboratory of the Fish Quarantine Station for Quality Control and Safety of Fishery Products (SKIPM) Class I Gorontalo. This study uses a descriptive method with a comparative approach. This research method is intended to describe every existing phenomenon, which may include forms, activities, characteristics, changes, relationships, similarities, and differences among phenomena (Rosita et al., 2023). When this method is combined with a comparative approach, the focus is on comparing two or more groups. Endoparasite examination will be conducted using the native method. The target organs examined include the digestive tract organs, namely the stomach and intestine

FEASIBILITY ANALYSIS OF NILE TILAPIA AQUACULTURE IN THE NILE TILAPIA CULTIVATION VILLAGE AREA, MATARAM CITY

Wiwik Susanti, Agnes Puspitasari Sudarmo, Rinda Noviyanti — Sat, 20 Jun 2026 00:00:00 +0800

The Aquaculture Village (KPB) in Mataram City is one of the government's efforts to improve community welfare, create food security and become a strategy to spur competitive tilapia productivity. Currently, the development of Aquaculture Villages faces challenges due to high land conversion, increase in fish feed prices, declining water quality, lack of technology adoption and weak marketing systems. This study aims to analyze the feasibility of tilapia farming business in aquaculture village areas based on technical, market, management, and financial aspects. The research uses qualitative descriptive methods and financial feasibility analysis calculations. The results of the study show that the development of tilapia farming business is still constrained in technical, management and marketing aspects. In the financial aspect, the tilapia cultivation business is feasible to run both in the short and long term. The results of the short-term financial analysis showed an R/C value of 1.28, profit of IDR 285,063,750/cycle and a profitability of 28.44%. The long-term analysis shows a positive NPV value of IDR 2.46 billion, Net B/C of 6.3, and IRR of 49%, with PP for 11 months.

CONSUMER ACCEPTANCE OF SENSORY CHARACTERISTICS OF VANNAMEI SHRIMP HEAD (LITOPENAEUS VANNAMEI) POWDERED BROTH EXTRACTION PRODUCTS WITH DIFFERENT FILLING INGREDIENTS

Sat, 20 Jun 2026 00:00:00 +0800

This study was conducted to investigate the production process of powdered broth, evaluate consumer acceptance of various formulations using wheat flour, cornstarch, tapioca starch, and rice flour, analyze the quality characteristics, identify the optimal formulation, and assess the quality of the selected product. The manufacturing process starts from washing, boiling, refining, filtering, adding fillers, drying, second refining, sieving, and packaging. The hedonic test involved 30 panelists with the best results in formula F3 (wheat flour: tapioca). Descriptive tests (spider web) and chemical tests (proximate) and microbiology (ALT) were also conducted. There are four types of formulations in making powdered broth, namely with the addition of wheat flour, cornstarch, tapioca, and rice flour. Based on the data obtained from the hedonic results, consumers prefer powdered broth with tapioca flour filler, because it has superior color, aroma, taste, texture, and solubility characteristics compared to other formulas. Several previous studies have proven the effectiveness of using natural fillers for making powdered broth based on shrimp head waste. Besides being a natural flavoring that is tasty and nutritious, powdered stock from shrimp head waste is also an effort to diversify fishery-based products that supports the principle of sustainable and environmentally friendly waste processing

THE EFFECT OF STOCKING DENSITY ON THE SURVIVAL RATE OF SIAMESE CATFISH (Pangasius hypophthalmus) FINGERLINGS (3-5 CM) IN A CLOSED WET TRANSPORTATION SYSTEM

Rinohadi Kusuma Atmadja, Sri Oetami Madyowati, Achmad Kusyairi — Sat, 20 Jun 2026 00:00:00 +0800

Siamese catfish (Pangasius hypophthalmus) is one of the leading freshwater commodities and has high economic value in Indonesia. Increasing cultivation intensity to meetdomestic and export market demand has direct implications for the high demand for quality seeds. Closed wet transportation is an important part of aquaculture activities. This method has significant advantages in terms of logistics efficiency. This study aims to assess the effect of density on closed wet transportation systems on the survival of Siamese catfish (Pangasius hypophthalmus) seeds with a size of 3-5 cm. This study is expected to provide recommendations for the transportation of the density of Siamese catfish (Pangasius hypophthalmus) in size 3-5 cm. This study uses the analysis method of normality tests in spss, variety homogeneity tests, variety fingerprints and the smallest real difference (BNT). Treatment A = Fish density 100 fish/liter (0) (Control Treatment, Treatment B = 150 fish/liter, Treatment C = 200 fish/liter, Treatment D = 250 fish/liter. From the study, the most optimal density of Siamese catfish (Pangasius hypophthalmus) is the highest which is 200 fish/liter with an average SR of 98.08%. With water quality including: water temperature: 26.1 °C – 26.8 °C, water pH: 6.1 – 6.9 and Dissolved Oxygen (DO): 2.0 – 6.3 ppm.