IDENTIFICATION OF MICROPLASTIC CONTENT IN GONGGONG SNAILS (Laevistrombus turturella) ON PENYENGAT ISLAND TANJUNGPINANG CITY

2024-12-04T11:21:54+08:00

Penyengat Island is a tourist attraction located in the Penyengat Village of Tanjungpinang City, Riau Islands Province. As both a tourist destination and a maritime transportation route, it is susceptible to the influx of waste such as plastic waste into its waters. This study aims to determine the distribution and abundance of microplastics found in gonggong snails and sediments in the waters around Penyengat Island. The method used was purposive sampling for sample collection and site selection. The data obtained were analyzed using one-way ANOVA with a significance level of 5%. The highest microplastic abundance was found at station 1, located along the coastal area of Jalan Pelabuhan with concentrations (gonggong snails 3,80 ± 0,86 particles/g, sediment 1,03 ± 0,23 particles/g). The lowest microplastic concentration was found at Station 3, located along the coastline of Jalan Sumur (gonggong snails 1,60 ± 0,29, sediment: 0,44 ± 0,09). The most commonly found microplastic forms were fragments (gonggong snails 62,21%, sediment 58,93%) and films (gonggong snails 23,04%, sediment 30,98%). Meanwhile, the dominant colors at each station were black (gonggong snails 46,76%, sediment 45,60%) and transparent (gonggong snails 1,98%, sediment 22,66%). The high utilization of conch snails necessitates research on the microplastic content in conch snails and in the aquatic sediments where these sessile organisms live and forage.

DEVELOPMENT OF A FISHERY CULTIVATION MODEL AS A MINATOURISM OBJECT IN SUMBERKIMA VILLAGE, GEROKGAK DISTRICT, BULELENG

2026-08-03T20:30:46+08:00

Sumberkima Village, Gerokgak District, Buleleng Regency has fishery cultivation potential in the form of floating net cages (KJA) as well as coastal ecosystems that support minatourism development. This study aims to determine the fishery cultivation potential that can be developed into a minatourism object and to design a sustainable fishery cultivation development model to support minatourism in Sumberkima Village. The study used a Research and Development (R&D) approach with the ADDIE model, involving 77 respondents determined using the Slovin Formula, consisting of aquaculture business actors, local minatourism managers, village officials, and tourists. Data were analyzed using multiple linear regression and SWOT (IFAS-EFAS) analysis. The results showed that fishery cultivation potential (X1) and community participation (X3) had a positive and significant effect on minatourism development (Y), while supporting facilities (X2) had no significant effect, with a coefficient of determination (R2) of 0.761. The SWOT analysis placed Sumberkima Village in Quadrant I with coordinate point (0.85 ; 1.05), indicating that an aggressive (SO) strategy is the most appropriate strategy to apply. The recommended development model integrates local potential, supporting facilities, and community participation, while still considering environmental, economic, and social sustainability aspects. Minatourism; Sumberkima Village; SWOT

THE EFFECT OF TOFU DREGS AND CUCUMBER ON THE GROWTH OF TUBIFEX WORMS (Tubifex sp.)

2026-01-25T13:04:45+08:00

Tubifex worms (Tubifex sp.) are high-protein natural feed organisms for fish fry, and the use of tofu dregs and cucumber as a culture medium may support their growth. This study aimed to determine the effect of using tofu dregs and cucumber as a culture medium on the growth of Tubifex worms. Tubifex worms are a protein-rich natural feed widely used in fish and shrimp farming, especially during the larval stage. Tofu dregs, a solid by-product of the tofu industry, contain protein and fiber, while cucumber has a high water content and contains minerals that may support substrate moisture and quality. The study was conducted experimentally using a completely randomized design (CRD) with four treatments: A (100% tofu dregs), B (85% tofu dregs + 15% cucumber), C (75% tofu dregs + 25% cucumber), and D (65% tofu dregs + 35% cucumber), with three replications for each treatment. The parameters observed included absolute biomass growth (g), individual abundance (individuals/L), and water quality (temperature and pH). Treatment C produced the highest average biomass growth (62.00 g) and individual abundance (89.22 individuals/L). These results indicate that a combination of 75% tofu dregs and 25% cucumber was the optimal medium formulation for supporting the growth of Tubifex sp. The use of organic materials such as tofu dregs and cucumber in Tubifex worm culture may provide an efficient, inexpensive, and environmentally friendly alternative for natural-feed production.

PRODUCTIVITY OF HYBRID GOLDFISH (Carassius auratus) HATCHERIES USING THE SMART-K MODEL

2026-08-03T20:30:20+08:00

The productivity of hybrid goldfish (Carassius auratus) hatcheries remains relatively low due to non-standardized hatchery management, particularly in broodstock management, larval rearing, and water quality control. This study aimed to analyze the effect of implementing the SMART-K model (Technology and Partnership-Based Aquaculture Management System) on the productivity of hybrid goldfish hatcheries. The study was conducted from November to December 2025 at hatchery ponds located in Cicantayan, Nagrak Cisaat, and Cimenteng, Sukabumi Regency. A quantitative approach was applied by comparing fry productivity before and after the implementation of the SMART-K model in the same hatchery units. Observed parameters included fry productivity at the end of the rearing cycle and water quality parameters, namely temperature, pH, and dissolved oxygen (DO). Data were analyzed descriptively and further examined using a paired t-test. The results showed that the average fry productivity increased from 3.61 liters before SMART-K implementation to 15.72 liters after implementation, with a statistically significant difference (p < 0.05). The application of the SMART-K model had a significant effect on improving the productivity of hybrid goldfish hatcheries.

EFFECTIVENESS OF DIETARY SYNBIOTICS FOR CONTROLLING Aeromonas hydrophila AND Pseudomonas sp. INFECTIONS IN PATIN (Pangasianodon hypophthalmus)

2026-08-06T16:26:07+08:00

THE EFFECTIVENESS OF THE USE OF AQUAPONIC SYSTEMS USING CHITOSAN FILTERS ON WATER QUALITY IN AMMONIA, NITRITE, AND NITRATES TEST PARAMETERS

2026-08-03T20:30:02+08:00

Chitosan is a polysaccharide compound derived from chitin obtained from marine animal shell waste and can act as a biocoagulant and bioflocculant in maintaining water quality. This study aims to determine the effectiveness of chitosan with different concentrations in improving water quality as seen from the content of ammonia, nitrite, and nitrates in the aquaponic system. This study was carried out for 30 days in Banjar Tegal Village, Buleleng District, Buleleng Regency, Bali Province using a Complete Random Design (RAL) with three treatments and three replicas. The treatments used include A (Aquaponic system without chitosan filter), B (Aquaponic system with the addition of chitosan filter with a dose of 30 mg/L), C (Aquaponic system with the addition of chitosan filter with a dose of 50 mg/L). Data was collected using a simple random sampling method and analyzed using quantitative and qualitative descriptive data analysis techniques. The results showed that the water quality performance (ammonia, nitrite, and nitrate test parameters) of the aquaponic system in the treatment of adding chitosan filters with a concentration of 50 mg/L (Treatment C) was better when compared to the control and with the treatment of adding chitosan filters with a concentration of 30 mg/L.

THE EFFECT SUBSTITUTION OF FISH MEAL WITH FRESH BLACK SOLDIER FLY LARVA ON THE GROWTH AND HEALTH OF CATFISH (Clarias sp.)

2026-09-30T14:52:57+08:00

This study aims to determine the effect of substituting fish meal with fresh Black Soldier Fly (BSF) larvae in feed on the growth of catfish (Clarias sp.). This study used a completely randomized design with four treatments and triplicates. The treatments include P1 (100% fish meal: 0% fresh BSF larvae), P2 (75% fish meal: 25% fresh BSF larvae), P3 (50% fish meal: 50% fresh BSF larvae), and P4 (25% fish meal: 75% fresh BSF larvae). The research used catfish seeds measuring 9-12 cm and fed them twice a day with a dosage of 3% based on fish biomass. Data were analyzed using variance analysis with a significance level of 95%. The research results show that substituting 50% fish meal with 50% fresh BSF larvae increases survival, absolute growth, specific growth rate, and reduces the feed conversion ratio of catfish. Substituting 25% fish meal with 75% fresh BSF larvae resulted in an absolute weight-based growth performance of 24.20±0.94 g and a weight-based specific growth rate of 0.4±0.01%/day. Substituting 50% fish meal with 50% fresh BSF larvae resulted in a survival rate of 94.67±2.31% and a feed conversion ratio of 1.2±0.08.

RELATIONSHIP BETWEEN THE N/P RATIO AND PLANKTON COMPOSITION AND ABUNDANCE IN INTENSIVE PACIFIC WHITE SHRIMP (Litopenaeus vannamei) CULTURE AT PT TANJUNGBUMI AKUAKULTUR BANGKALAN EAST JAVA

2026-08-06T15:30:47+08:00

ANALYSIS OF CONSUMER CHOICE OF PROCESSED FISHERY PRODUCTS IN BALONGPANGGANG VILLAGE, GRESIK REGENCY, EAST JAVA.

2026-08-06T16:24:43+08:00

Gresik Regency has great fishery potential, yet its utilization through processed products remains suboptimal, necessitating a deep understanding of consumer preferences as a foundation for developing marketing strategies. This study aims to analyze consumer preferences for processed fishery products in Balongpanggang Subdistrict through mapping the importance and performance levels of product attributes and the influence of demographic characteristics on preferences. The research employed a descriptive quantitative approach with a survey method involving 105 respondents selected through accidental sampling. Data were collected using Likert scale questionnaires and analyzed using Importance-Performance Analysis (IPA), Kruskal-Wallis test, and Spearman's Rank Correlation test. The results showed that taste and trust attributes are the main strengths that must be maintained, while price is the top priority for improvement. Demographic characteristics have limited influence, where age significantly affects the taste attribute (p=0.044) and education significantly affects the packaging attribute (p=0.026), while income and consumption frequency have no significant effect. This study recommends differentiated marketing strategies including improving price perception, taste innovation for the productive age group, and enhancing packaging quality with complete product information.

POTENTIAL OF BLACK SOLDIER FLY LARVAE (HERMETIA ILLUCENS) AS A COMMERCIAL FEED SUBSTITUTE FOR NILE TILAPIA (OREOCHROMIS NILOTICUS)

2026-09-01T10:49:43+08:00

Maggot (Hermetia illucens) is a potential alternative feed source for Nile tilapia (Oreochromis niloticus) due to its nutritional value and potential to replace commercial feed. This study aimed to evaluate the potential of maggot Hermetia illucens as a substitute for commercial feed on the growth and survival of Nile tilapia (Oreochromis niloticus). The experiment was conducted for 28 days using three dietary treatments: P0, consisting of 100% maggot; P1, consisting of 50% maggot and 50% commercial feed; and P2, consisting of 100% commercial feed. The observed parameters included weight gain, specific growth rate (SGR), absolute length growth, and survival rate (SR). The results showed that, descriptively, P0 produced the highest weight gain and SGR, with values of 2.47 ± 1.01 g and 1.55 ± 0.78%/day, respectively, compared with P1 (1.13 ± 0.35 g and 1.03 ± 0.20%/day) and P2 (1.40 ± 0.87 g and 1.30 ± 0.84%/day). Absolute length growth in P0 and P2 was 0.73 ± 0.47 cm and 0.73 ± 0.21 cm, respectively, while P1 showed 0.43 ± 0.21 cm. The highest survival rate was observed in P1 (82.22 ± 13.33%), followed by P2 (80.00 ± 6.67%) and P0 (73.33 ± 11.55%). Analysis of variance showed that dietary treatments had no significant effect on the absolute length growth of Nile tilapia (p>0.05). Descriptively, maggot showed potential as an alternative feed for Nile tilapia culture.

IMPLEMENTATION OF PANCASILA VALUES REGARDING PLASTIC WASTE MANAGEMENT AWARENESS AMONG THE COASTAL COMMUNITY OF TAPIAN NAULI I VILLAGE

2026-08-05T18:12:14+08:00

Sampah plastik di wilayah pesisir Indonesia merupakan ancaman serius bagi ekosistem laut dan ekonomi nelayan. Desa Tapian Nauli I, Tapanuli Tengah, Sumatera Utara, menghadapi akumulasi sampah plastik akibat praktik pengelolaan yang tidak terkelola dan keterbatasan fasilitas. Penelitian ini bertujuan mengidentifikasi tingkat kesadaran masyarakat terhadap pengelolaan sampah plastik dan menganalisis implementasi nilai-nilai Pancasila dalam menjaga kebersihan lingkungan pesisir. Pendekatan deskriptif kualitatif diterapkan dengan pengumpulan data melalui observasi, wawancara, dan dokumentasi pada 40 responden pada Juni 2026. Data dianalisis secara kualitatif-deskriptif untuk menggambarkan pengetahuan, sikap, praktik pengelolaan sampah, serta perwujudan nilai Pancasila. Hasil menunjukkan kesadaran dan pengetahuan masyarakat mengenai bahaya sampah plastik tergolong baik; mayoritas memahami dampak ekologis dan ekonomi. Namun, terjadi kesenjangan signifikan antara pengetahuan dan praktik: 87,5% responden mengakui pernah membuang sampah ke laut atau membakar sampah, terutama karena keterbatasan fasilitas pembuangan dan minimnya sistem pengelolaan. Nilai agama dan Pancasila terutama gotong royong, persatuan, dan tanggung jawab sosial—tertanam kuat dan memotivasi partisipasi dalam kegiatan kebersihan, meski partisipasi belum merata. Hambatan utama meliputi faktor struktural (kekurangan fasilitas) dan kultural (kebiasaan penggunaan plastik tinggi). Penelitian ini menyimpulkan bahwa pengelolaan sampah plastik memerlukan pendekatan holistik yang mengintegrasikan penguatan fasilitas infrastruktur, edukasi partisipatif berkelanjutan, penegakan regulasi, serta penguatan nilai lokal berbasis Pancasila untuk mendorong tindakan kolektif dan keberlanjutan lingkungan pesisir.

CHARACTERIZATION OF INDICATOR BACTERIAL COMMUNITIES IN SHRIMP PONDS FOR EVALUATING THE HEALTH OF CULTURE MEDIA

2026-08-03T20:30:08+08:00

GROW-OUT TECHNIQUE OF WHITELEG SHRIMP (Litopenaeus vannamei) IN HDPE-LINED PONDS AT UPT BPBAP SITUBONDO, GELUNG INSTALLATION

2026-08-20T14:14:53+08:00

Whiteleg shrimp (Litopenaeus vannamei) is a leading crustacean commodity that is widely cultivated because of its rapid growth and strong adaptability to the environment. This study aimed to describe the grow-out technique of whiteleg shrimp in High Density Polyethylene (HDPE)-lined ponds at UPT Balai Perikanan Budidaya Air Payau (BPBAP) Situbondo, Gelung Installation, covering pond preparation, water quality management, feed management, and growth performance. The study was conducted from 12 November 2025 to 13 January 2026 using a survey method with primary data collection (observation, active participation, and interviews) and secondary data (literature review and institutional documents). Shrimp were stocked at a density of 125 individuals/m² (200,000 individuals in a 1,600 m² pond). The results showed that water quality parameters remained within the optimum range, namely temperature 25.5–30.6°C, pH 7.4–8.0, salinity 23–27 ppt, transparency 20–40 cm, and dissolved oxygen 4–5 mg/L. Feed management was applied through a blind feeding method (DOC 1–30) and an index-based method (DOC 31–harvest), with Average Body Weight increasing from 3.1 g (DOC 30) to 5.6 g (DOC 40) and Average Daily Growth ranging from 0.24–0.26 g/day. The Feed Conversion Ratio obtained was 1.04, considered efficient. During rearing, an infection of Infectious Myonecrosis Virus (IMNV) occurred, presumably triggered by temperature fluctuations and high stocking density. These results indicate that the application of HDPE-lined ponds combined with proper water quality and feed management can optimally support the growth of whiteleg shrimp, although viral disease control still requires strengthened biosecurity measures.

SWOT ANALYSIS OF THE DEVELOPMENT OF NILE TILAPIA (Oreochromis niloticus) GROW-OUT FARMING BUSINESSES IN CIREBON CITY, WEST JAVA

2026-08-05T18:00:16+08:00

SQUID INK FORTIFICATION ON LIKELIHOOD OF WONTON CHIPS

2026-08-06T16:12:17+08:00

Squid ink (Loligo sp.), a by-product of squid processing, has the potential to be utilized as a food fortification ingredient due to its melanin, protein, and amino acid content, which can enhance the nutritional value, provide a natural color, and improve the flavor of food products. This study aimed to determine the optimum level of squid ink addition that produced wonton chips with the highest consumer acceptability based on their organoleptic characteristics. The study employed an experimental method with six levels of squid ink addition (0%, 0.5%, 1.0%, 1.5%, 2.0%, and 2.5%) and involved 20 semi-trained panelists. The evaluated parameters included appearance, aroma, texture, and taste using a hedonic test. The data were analyzed using the Friedman test, multiple comparison test, and the Bayes method to determine the best treatment. Proximate analysis was conducted on the selected treatment to determine moisture, ash, protein, fat, and carbohydrate contents. The results showed that the addition of squid ink had a significant effect on appearance and taste, but no significant effect on aroma and texture. The addition of 1.5% squid ink was identified as the best treatment, with median hedonic scores of 9 for appearance, 7 for aroma, 7 for texture, and 9 for taste, and exhibited chemical characteristics that met the required quality standards. Therefore, fortification with 1.5% squid ink produced wonton chips with the highest overall acceptability among the panelists.

Key words: Fortification, wonton chips, organoleptic characteristics, squid ink, hedonic test

DEVELOPMENT OF EAFM INDICATORS BASED ON BIOMETRIC AND SPATIAL PARAMETERS WITHIN THE FISH RESOURCE DOMAIN FOR THE EVALUATION OF SUSTAINABLE FISHERIES

2026-09-30T15:04:52+08:00

The implementation of the Ecosystem Approach to Fisheries Management (EAFM) in Indonesian small-scale fisheries frequently encounters challenges regarding instrument sensitivity, primarily due to qualitative bias and operational data uncertainty in the field. This study aimed to analyze the weaknesses of existing EAFM indicators in the fish resource domain and reconstruct indicator formulations to be more valid, measurable, and operational. The research was conducted at the Pamayangsari Fish Landing Base (PPI), Tasikmalaya Regency, employing a Research, Design, Production, and Evaluation (RDPE) design with a descriptive qualitative-quantitative approach. Primary data were gathered through field observations, biometric catch sampling, and in-depth interviews with 35 key respondents (fishermen, port authorities, and fish traders). Findings revealed that the existing NWG-EAFM (2014) indicators suffer from critical fundamental subjectivities in qualitative assessment. This study successfully formulated two reconstructed indicator innovations: (1) a Biometric-Based Fish Size Trend Indicator, which converts qualitative perceptions into a quantitative matrix based on the ratio of Length at First Maturity () to mean catch length (); and (2) a Spatial-Logistic Range Collapse Indicator, which converts spatial fishing ground shifts into a combined metric of nautical distance, sailing time, and Fuel Consumption Ratio (FCR). Integrating these reconstructed indicators significantly enhanced EAFM evaluation precision from a "Less Measurable/Yellow" state to a "Valid and Sensitive/Green" state. This research recommends establishing co-management institutions and fishermen field schools to ensure sustainable, participatory biometric and spatial data collection.

EFFECT OF LIQUID ORGANIC FERTILIZER (POC) SOAKING ON GROWTH AND CARRAGEENAN CONTENT IN SEAWEED (Kappaphycus alvarezii) CULTIVATION

2026-08-05T18:18:27+08:00

Kappaphycus alvarezii is a type of carrageenan-producing seaweed that has high economic value and is widely cultivated in Indonesia. This study aims to determine the effect of liquid organic fertilizer (POC) immersion on the growth and carrageenan content of K. alvarezii. The study was conducted for 45 days using a Randomized Block Design (RBD) with three treatments: no POC immersion (P1), 200 mL POC immersion (P2), and 250 mL POC immersion (P3). The parameters observed included absolute growth, specific growth rate (SGR), and carrageenan content. The results showed that POC immersion significantly affected seaweed growth (P<0.05). The highest absolute growth was obtained in treatment P2 at 392±13.23 g. Meanwhile, the highest carrageenan content was obtained in treatment P1 at 27.46%.

EFFECT OF Rhizophora mucronata LEAF EXTRACT ON THE GONAD MATURITY OF MUD CRAB Scylla olivacea

2026-06-02T18:03:17+08:00

Female mud crabs are a high-value fishery commodity due to the market demand for their gonadal development potential. To date, market supply remains predominantly dependent on wild-caught populations. This condition threatens the sustainability of mud crab stocks, both for market supply and the conservation of natural populations. The present study aimed to evaluate the effect of mangrove leaf extract (Rhizophora mucronata) on the gonadal maturation of mud crab (Scylla olivacea). The study employed a Completely Randomized Design, consisting of four dosages of mangrove leaf extract (0, 0.5, 1, and 1.5 mg/100 g body weight), with each treatment conducted in triplicate. The mangrove leaf extract was injected into the experimental animals on the fourth day after stocking. The crabs were fed trash fish at 10–15% of body weight twice daily. Gonadal maturity stage (GMS), gonado-somatic index (GSI), and hepatopancreas-somatic index (HSI) were observed on day 15 post-injection (one individual from each treatment) and day 30 post-injection (all individuals from each treatment). Descriptive analysis indicated that the gonadal maturity stage of the experimental crabs increased across all treatments. The highest GMS and GSI values, along with the lowest HSI value, were obtained in the treatment receiving 1 mg/100 g body weight. Water quality parameters during the culture period remained within the optimal range for mud crab cultivation. Injection of R. mucronata leaf extract at a dosage of 1 mg/100 g body weight was found to be the most effective dose for enhancing gonadal maturation and GSI in mud crabs.

GROWTH OF SILKWORM (Tubifex sp.) IN VERTIQUA MEDIA WITH THE ADDITION OF A BIOFICAL FILTER

2026-08-03T20:30:26+08:00

bahasa inggris

STRATEGIES OF IMPROVING INCOME FOR HANDLINE RED SNAPPER FISHER IN LAMONGAN REGENCY, EAST JAVA

2026-08-05T18:15:55+08:00

The red snapper is a fish with high economic value in Indonesia. One of the fish landing areas in Lamongan Regency, where the main catch is red snapper, is in Kandangsemangkon Village, Paciran District. The income of boat crew red snapper fishery is still relatively low, which can affect the welfare of life.The average income of red snapper fishermen in Kandangsemangkon Village is IDR 1.667.448/month, which is below the minimum wage in Lamongan Regency. The government needs to formulate strategies to increase the income of red snapper fishermen. This study aims to formulate strategies to increase the income of red snapper fisher in Lamongan Regency. The approach method uses descriptive analysis and SWOT. The results of the study indicate that five strategies were formulated. These five strategies are improving the quality of fish catches by replacing ice blocks with slurry ice, facilitating the creation of alternative livelihoods, controlling the quantity of fish marketed according to demand using a warehouse receipt system, and optimizing the number of workers fisher per boat.

DETECTION OF MEGALOCITIVIRUS IN GOBY FISH (Stiphodon sp.) AT WAAI RIVER USING POLYMERASE CHAIN REACTION METHOD

2026-09-01T11:20:41+08:00

Megalocytivirus is an important viral pathogen affecting freshwater and marine fish, causing mass mortality and significant economic losses in aquaculture. Goby fish (Stiphodon sp.) have high ecological and economic value, particularly as ornamental fish and indicators of water quality, thus requiring early detection of viral diseases. This study aimed to detect Megalocytivirus infection in goby fish using conventional Polymerase Chain Reaction (PCR) targeting the major capsid protein (MCP) gene. Fish tissue samples were collected from February to April 2025 at the Maluku Fish, Animal, and Plant Quarantine Center. DNA extraction was performed using an RNA/DNA silica extraction kit, followed by PCR amplification and agarose gel electrophoresis. The results showed that all tested goby samples were negative for Megalocytivirus infection. These findings indicate that goby fish from Maluku waters were free from Megalocytivirus. Conventional PCR proved to be an effective and sensitive method for early detection of viral diseases in fish

EFFECTIVENESS OF DIFFERENT ADDITIONAL FEEDINGS ON THE GROWTH AND SURVIVAL OF MAHSEER (Tor tambra) FISH FROM THE ALAS RIVER

2025-02-25T19:24:44+08:00

Mahseer (Tor tambra) is a high-value freshwater fish species that is highly favored by both local and international markets. Its popularity is attributed to its thick flesh, distinctive taste, high oil content, and premium market value. This study aimed to evaluate the effects of different supplementary feeds on the growth performance and survival rate of mahseer originating from Alas River. The experiment employed a Completely Randomized Design (CRD) consisting of four treatments with three replicates each. The treatments included P1 (commercial pellet feed), P2 (commercial pellet feed spplemented with coconut meal), P3 (commercial pellet feed supplemented with sweet potato), P4 (commercial pellet feed supplemented with figs). The results demonstrated that P4 produced the best growth performance, with an absolute weight gain of 0.84 g, an absolute length gain of 0.99 cm, and a specific daily growth rate of 0.69%. the most efficient feed conversion ratio was also observed in P4, with a value of 1.90. Meanwhile, the highest survival rate was recorded in P1 and P3, both achieving 100% survival. Throughout the rearing period, water quality parameters remained within suitable ranges for fish culture, with temperature ranging from 24.3-26.5^oC, pH from 7.6 to 7.9, dissolved oxygen (DO) from 4.0 to 4.4 mg/L, and ammonia concentrations ranging from 0.11 to 0.66 mg/L.

ANALYSIS OF LEAD (Pb) AND COPPER (Cu) CONTENT IN Gracilaria sp. SEAWEED FROM THE COASTAL WATERS OF SUMBERKIMA VILLAGE

2026-08-03T20:30:39+08:00

OPTIMIZATION OF THE DUOKAILI CRISPY PROCESSING ON THE PROXIMATE AND ORGANOLEPTIC CONTENT OF ANCHOR, MORINGA LEAF, AND SWEET POTATO-BASED PRODUCTS

2026-08-06T16:33:11+08:00

Duokaili Crispy is a traditional food of the Kaili community made from anchovies, moringa (Moringa oleifera) leaves, and sweet potatoes. However, the processing methods, particularly ingredient formulation, frying temperature, and the resulting proximate composition and sensory quality, have not yet been standardized. This study aimed to evaluate the effects of ingredient formulation and frying temperature on the proximate composition, antioxidant activity, and sensory characteristics of Duokaili Crispy. A laboratory-based experimental design was employed using four formulation treatments: F0 (50% anchovies, 0% moringa leaves, and 50% sweet potatoes), F1 (40%, 20%, and 40%), F2 (30%, 30%, and 40%), and F3 (50%, 20%, and 30%), combined with three frying temperatures: S1 (150°C), S2 (165°C), and S3 (180°C). The products were analyzed for moisture content (oven drying at 105°C), crude fat (Soxhlet extraction), ash, protein, carbohydrate content (by difference), and antioxidant activity. Sensory evaluation was conducted to assess color, aroma, taste, texture, and overall acceptability. Data were analyzed using appropriate statistical methods to determine the effects of formulation, frying temperature, and their interaction. The results showed that ingredient formulation, frying temperature, and their interaction significantly affected (p < 0.05) the proximate composition, antioxidant activity, and sensory characteristics of Duokaili Crispy. Increasing frying temperature reduced moisture and fat contents but increased ash content, whereas higher proportions of moringa leaves and anchovies significantly enhanced protein content and antioxidant activity. In contrast, the highest carbohydrate content was observed in formulations containing a greater proportion of sweet potatoes. Sensory evaluation revealed that formulation F2 processed at 165°C achieved the highest scores for color (8.30), aroma (8.40), taste (8.60), texture (8.50), and overall acceptability (8.60), indicating that this treatment represented the optimum processing condition for Duokaili Crispy.

SHRIMP FARM EFFLUENT TO COASTAL MICROBIOMES AND ITS IMPLICATIONS FOR WATER QUALITY AND PATHOGEN PROLIFERATION

2026-08-03T20:30:14+08:00

Shrimp aquaculture faces significant challenges from disease outbreaks and environmental degradation caused by cultivation waste. This study aims to characterize the indicator bacteria communities in the coastal areas surrounding shrimp farms and to evaluate their correlation with water quality parameters as a tool for monitoring ecosystem health. This research employed a descriptive-observational approach and conventional cultivation on selective media, including Thiosulfate-Citrate-Bile Salts-Sucrose (TCBS) Agar and Pseudomonas Isolation Agar, to quantify the abundance of Vibrio spp. and Pseudomonas spp., respectively, alongside Marine Agar. Measurements of water quality parameters such as temperature, salinity, pH, dissolved oxygen (DO), nitrate, nitrite, and ammonia were also integrated for correlation analysis. The analysis revealed that aquaculture effluent significantly increased the abundance of total heterotrophic bacteria and Vibrio spp. in the coastal waters receiving farm waste. The abundance of Vibrio was positively correlated with temperature and pH, and negatively correlated with dissolved oxygen. Bacterial communities, including Vibrionaceae and Pseudomonadaceae, were identified as core components of the microbiome in waters exposed to anthropogenic waste. Fluctuations in environmental parameters trigger shifts in these bacterial communities, elevating the risk of pathogen and toxin presence. These findings underscore the importance of monitoring indicator bacteria for sustainable farm management, mitigating disease risks, and ensuring the suitability of coastal waters as a viable medium for aquaculture.

BIOLOGICAL ASPECTS OF MUDSKIPPERS: FEEDING CHARACTERISTICS AND GROWTH PATTERNS IN THE MANGROVE ECOSYSTEM OF KARANGTALUN, CILACAP

2026-09-30T15:03:36+08:00

Mudskippers are characteristic inhabitants of mangrove ecosystems and utilize a variety of food resources available within intertidal habitats. This study investigated the feeding characteristics and growth patterns of mudskippers inhabiting the Karangtalun mangrove ecosystem, Cilacap, Indonesia. A field survey was conducted at three stations selected using purposive sampling. Fish specimens were obtained from local fishers and examined for mouth gape, relative gut length (RGL), stomach content composition, and length–weight relationships. Mean mouth gape ranged from 10.20 to 12.07 mm, while RGL values ranged from 2.16 to 2.34, indicating an omnivorous feeding tendency. Stomach content analysis revealed that phytoplankton was the dominant food component, with detritus, zooplankton, and algae occurring in varying compositions among stations. Length–weight analysis indicated positive allometric growth at all stations, with b values ranging from 3.14 to 3.63. Although feeding characteristics varied among stations, these variations did not consistently correspond to differences in growth patterns. Overall, the findings indicate that mudskippers in the Karangtalun mangrove ecosystem exhibit omnivorous feeding characteristics, utilize diverse food resources, and display positive allometric growth. These results provide baseline information on the feeding ecology and growth biology of mudskippers in mangrove habitats.

FORMULATION AND CHARACTERIZATION OF RICE FLOUR-BASED INSTANT NOODLES WITH THE ADDITION OF AFRICAN CATFISH (CLARIAS GARIEPINUS) MEAT FLOUR AS A PROTEIN SOURCE

2026-08-06T16:04:13+08:00

Instant noodles are generally made from wheat flour, which still relies on imported raw materials. An alternative approach is utilizing rice flour with the addition of African catfish (Clarias gariepinus) meat flour as a protein source. This study aimed to formulate rice flour-based instant noodles enriched with African catfish meat flour and analyze its effects on chemical, physical, and organoleptic characteristics. The study employed a Completely Randomized Design (CRD) with four treatment levels: P0 (0 g), P1 (15 g), P2 (25 g), and P3 (35 g), each with three replications. Chemical and physical data were analyzed using ANOVA followed by Duncan's test, while organoleptic data were analyzed using the Kruskal-Wallis test followed by Dunn's test at a 95% confidence level. The results showed that the addition of African catfish meat flour increased moisture content from 3.69±0.20% to 7.30±0.39%, ash content from 4.43±0.14% to 5.84±0.24%, fat content from 4.41±0.11% to 5.73±0.06%, protein content from 11.07±0.20% to 12.75±0.28%, and rehydration time from 12.18±0.05 minutes to 16.14±0.05 minutes. However, it decreased carbohydrate content from 76.40±0.28% to 68.02±0.93%, as well as the hedonic quality scores and panelists' preference levels for appearance, aroma, texture, and taste. All treatments still complied with the instant noodle requirements based on SNI 3551:2018 and BPOM Regulation Number 26 of 2021.

Key words: African catfish, Fish Meal, Instant Noodle, Rice Flour

SOCIO-ECONOMIC PERSPECTIVES OF COASTAL COMMUNITIES ON THE CHALLENGES OF MANGROVE ECOSYSTEM REHABILITATION IN TAWIRI VILLAGE, AMBON BAY

2026-09-01T11:23:32+08:00

Mangrove ecosystem rehabilitation is a key strategy for sustaining coastal environments; however, its success depends not only on biophysical conditions but also on the socio-economic characteristics of coastal communities. This study aims to analyze the challenges of mangrove rehabilitation in Tawiri Village, Ambon Bay District, from a Social-Ecological Systems (SES) perspective. A qualitative approach was employed using thematic analysis based on in-depth interviews, field observations, and documentation. Data were analyzed through data familiarization, coding, theme development, interpretation, and conclusion drawing, supported by source and method triangulation. The findings reveal that mangrove rehabilitation is constrained by household economic pressures, community dependence on mangrove resources, low rehabilitation success, solid waste pollution, and suboptimal governance. Nevertheless, local communities demonstrate adequate ecological knowledge, environmental awareness, and willingness to participate in rehabilitation programs when supported by sustainable and collaborative initiatives. The study highlights that effective mangrove rehabilitation requires an integrated approach encompassing ecological, social, economic, and institutional dimensions. Therefore, local governments should strengthen SES-based rehabilitation policies by promoting community participation, sustainable livelihood development, integrated coastal waste management, and multi-stakeholder collaboration to enhance mangrove ecosystem resilience and improve the well-being of coastal communities.

BIOASSESSMENT OF COASTAL WATER QUALITY IN PENYENGAT ISLAND BASED ON MACROZOOBENTHIC COMMUNITY STRUCTURE

2026-08-06T10:28:58+08:00

The coastal ecosystem of Penyengat Island in Tanjungpinang City is an area with high ecological and economic value, however, various anthropogenic activities such as settlements, sea transportation, tourism, and reclamation around the Tanjungpinang coast are suspected to put pressure on water quality. This study aims to determine the abundance and ecological index of macrozoobenthos, water quality conditions based on the A Marine Biotic Index (AMBI), and the relationship between macrozoobenthos abundance and water physicochemical parameters. The study was conducted in February 2026 using a survey method with a systematic random sampling technique. Sampling used an Ekman grab measuring 30 × 30 cm. Data were analyzed using diversity, evenness, dominance, AMBI index, and Spearman correlation tests. The results showed that 24 genera of macrozoobenthos were found consisting of the classes Gastropoda (12 genera), Bivalvia (8 genera), Malacostraca (1 genus), Polychaeta (2 genera), and Oligochaeta (1 genus) with an abundance of 42.22 ind/m². The diversity index (H') value is classified as moderate (2.67), uniformity (E) is high (0.84), and dominance (C) is low (0.10). In general, the water quality still meets the quality standards. Based on the AMBI value, the quality of the coastal waters of Penyengat Island is classified as slightly polluted, which indicates environmental pressure due to the input of organic materials. The results of the Spearman correlation test indicate that the physicochemical parameters have a very weak and insignificant relationship.

TESTING OF PROTEIN CONTENT, WATER CONTENT AND ORGANOLEPTIC QUALITY OF BLOOD SEA CUCUMBER (Holothuria Edulis) WITH DIFFERENT OVENING TEMPERATURES

2026-08-06T16:20:11+08:00

Sea cucumber is one of the marine organisms with high economic value, often used as food and in traditional medicine. Sea cucumbers are marine animals that are easily damaged, so they require post-harvest processing to extend their shelf life. One preservation method commonly used is drying. This study aims to determine the moisture content, protein content, and organoleptic quality of dried blood sea cucumber (Holothuria edulis) at different oven temperatures. The research used a descriptive quantitative approach with oven drying at five temperature treatments: P1 (50°C), P2 (60°C), P3 (70°C), P4 (80°C), and P5 (90°C), with each treatment replicated three times. The parameters observed included moisture content, protein content, and organoleptic tests of appearance, aroma, and texture by 25 untrained panelists. The collected data were analyzed by calculating the average value for each testing parameter. The results revealed that increasing the oven temperature consistently reduced the moisture content, reaching a range of 1.44% to 1.10%, and increased the protein content from 12.06% to 17.63%. The organoleptic evaluation indicated that a temperature of 90°C produced the highest scores for appearance, aroma, and texture. Overall, the treatment using a drying temperature of 90°C (P5) provided the highest values for all tested parameters and is recommended as the best treatment in the processing of dried blood sea cucumber to obtain good physical quality, protein content, and moisture content.

STRATEGIES FOR IMPROVING QUALITY CONTROL AND SAFETY OF FISHERY PRODUCTS AMONG SUPPLIERS IN MEDAN

2026-08-20T14:21:16+08:00

The city of Medan serves as a hub for fish processing units in Indonesia that focus on exporting fishery products. However, quality control and safety measures for fishery products at fish raw material supplier units are not yet fully implemented, which affects the quality of the raw fish supplied to fish processing units and could potentially lead to rejection by processing companies or export destination countries. This study aims to formulate strategies to improve quality control and safety of fishery products at supplier units to produce export-quality fish in the city of Medan. This is a descriptive qualitative and quantitative study using data collection techniques such as questionnaires, observations, and interviews with a sample of 55 respondents consisting of representatives from fish supplier units, fish processing units, and Fisheries Product Quality Inspectors. Strategies were formulated using the IFE and EFE Matrix Analyses, SWOT Analysis, and the QSPM Matrix. The research results based on the IFE and EFE Matrix analyses are as follows: Strengths (S) = 1.752; Weaknesses (W) = 0.562; Opportunities (O) = 2.077; Threats (T) = 1.442, Thus, quality and safety control of fishery products at suppliers is progressive, with 18 alternative strategies. The QSPM analysis identified as a strategic priority is that the Competent Authority routinely conducts outreach to fish raw material suppliers regarding the importance of CPIB and HACCP Supplier certification, particularly in meeting the requirements of export destination countries, with a TAS value of 4,287.

MORPHOMETRIC STUDY OF FISH CAUGHT IN POCKET DRAG NETS (JTB) OF FISHERMEN AT TPI NUSANTARA BRONDONG FISHERY HARBOR, LAMONGAN

2026-08-05T18:10:53+08:00

Brondong Nusantara Fishing Port (NFP) is a type B port located in Indonesia. Brondong NFP, with its adequate facilities, has become the economic center for the fishing community engaged in fishing activities using cantrang nets or Pocket Seines (JTB). In accordance with the Minister of Maritime Affairs and Fisheries Regulation Number 18 of 2021 concerning the Placement of Fishing Gear and Fishing Aids, the prohibited mesh size for cantrang nets is less than 2 inches (5 cm), so it is replaced with a Pocket Trawl Net with a minimum mesh size of 2 inches. Fish have body parts that can be measured and counted. The measurement referred to is morphometric measurement. This morphometric measurement can be used to determine fish growth patterns, feeding habits, fish classification, and as a basis for identifying fish that are catchable and those that are not yet catchable. This research was conducted with the aim of determining the morphometric characteristics of catches from vessels using the Purse Seine Fishing Gear (PSFG) by fishermen at PPN Brondong. The method used in this study is a quantitative method conducted at the TPI PPN Brondong by performing morphometric measurements of fish. Measurements were conducted by assessing 8 morphometric characters of the catch from 5 JTB boats. The results of this study indicate that the JTB fishing gear used by fishermen at PPN Brondong does not comply with the regulations on permissible fishing gear based on PERMENKP No. 18 of 2021. The allowed mesh size for operation is 5 cm or 2 inches, while the minimum width of the fish body is 3 cm or 1.1 inches, which the fishermen catch and can impact the sustainability of fish populations.

FORTIFICATION OF RED SEAWEED (Kappaphycus alvaresii) FLOUR IN SNACK BAR FORMULATION AS AN EVALUATION OF IODINE CONTENT AND TEXTURE IMPROVEMENT

2026-08-06T16:02:31+08:00

Consumer interst in pratical, nutrient-dense funcional foods has prompted the devolopment of healthy snack alternatives from local raw materials. The read seaweed Kappaphycus alvarezii shows promise as a fortiying ingredient, not only for its iodine content and physical texture, but also its moisture profile and overall influence on the snack bar’s sensory traits. To evaluate this potential, a completely randoomized design was set up across four treatments-a seaweed-free control, and three others fortified with seaweed flour at 10%, 20%. And 30%. The evaluation parameters covered moisture, iodine, hardness, and a hedonic sensory test with 25 semi-trainet panelists. Chemical and texture data were subjected to ANOVA followed by Duncan’s test, while sensory scores underwent Kruskal-Wallis and Dunn’s analyses. Ouf findings revealead that the 30% level produced the highest iodine reading, at 60,93 µg/g. Moisture content dropped sharply (p<0,05) from 17.53% in the control to 12.53% in the 30% treatment-although this still slightly exceeds the 11.26% cap set by SNI 01-4216-1996. Hardness readings ranged from 4333.74 to 4588.68 gf, which falls well within the typical span of commercial snack bars. In terms of sensory response, seaweed inclusion markedly affected color, aroma, and texture, but did not significantly alter taste scores. Overall, the 10% seaweed formulation stood out as the best, yielding higher iodine than the control, maintaining an acceptable mouthfeel, and earning the highest panelist preference. Taken together, these results position this particular formulation as a viable candidate for a functional food product aimed specifically at boosting dietary iodine intake.

THE RELATION BETWEEN THE PHYSICAL AND CHEMICAL CONDITIONS OF WATERS AND THE PRESENCE OF WHALE SHARKS (Rhincodon typus) IN THE BOTUBARANI TOURISM AREA, GORONTALO

2026-08-20T14:04:36+08:00

Whale sharks (Rhincodon typus) exhibit consistent seasonal aggregation in the Botubarani tourism area, Gorontalo, yet the local physicochemical mechanisms governing their occurrence remain poorly quantified. This study aimed to characterize water physicochemical conditions and identify the environmental parameters most strongly associated with whale shark presence at the coastal microhabitat scale. Data were collected across three stations at Botubarani Station III using a water quality meter, Secchi disk, and spectrophotometric nutrient analysis, then analyzed through Pearson correlation, Principal Component Analysis (PCA), and Redundancy Analysis (RDA). Correlation results revealed organized parameter interactions, with strong positive correlations for temperature–salinity (r = 0.78), nitrate–phosphate (r = 0.84), and water clarity–dissolved oxygen (r = 0.65). PCA resolved two dominant environmental gradients: a physical water-mass gradient (PC1, ~71.4%) and a nutrient gradient (PC2, ~28.6%). RDA cumulatively explained ~69.9% of whale shark distribution variance, identifying temperature, dissolved oxygen, and water clarity as primary positive determinants, while turbidity and nutrients exhibited negative associations. These findings support a bio-physical coupling framework, demonstrating that microscale physicochemical variability mediates trophic dynamics and habitat use by R. typus in semi-enclosed tropical coastal systems. Results provide a quantitative baseline for environment-based monitoring strategies in whale shark conservation management at Botubarani.

ECOLOGICAL STATUS ASSESSMENT OF THE MENDELANG RIVER, MEKAR JAYA VILLAGE, SOUTH TABIR DISTRICT, MERANGIN REGENCY, JAMBI PROVINCE BASED ON INTEGRATION OF PHYSICAL-CHEMICAL PARAMETERS AND BIOTIC INDICATORS

2026-08-05T17:52:40+08:00

Assessment of river ecological status based on the integration of physical-chemical parameters and biotic indicators is a comprehensive approach in sustainable inland water management. This study aimed to assess the ecological status of the Mendelang River, Mekar Jaya Village, South Tabir District, Merangin Regency, Jambi Province using physical-chemical parameters and fish community structure as bioindicators. Data collection was carried out in August 2025 with 16 repeated catches using modified ambat nets. Physical-chemical parameters measured included temperature, pH, dissolved oxygen (DO), water clarity, and current velocity. Biotic indicators were analyzed using the Shannon-Wiener (H'), Evenness (E), and Simpson (C) indices. The relationship between environmental parameters and species abundance was analyzed using Principal Component Analysis (PCA). Results showed 21 fish species with a total of 1,541 individuals. The H' value was 2.10 (moderate category), E was 0.69 (high), and C was 0.18 (low). Physical-chemical parameters were still within the water quality standard range of Government Regulation No. 22 of 2021. PCA indicated that temperature and DO were the main variables influencing the distribution of dominant species. Integration of indicators showed that the Mendelang River falls in a good ecological status category with a stable community structure and relatively low environmental pressure

COMPARATIVE ANTIBACTERIAL EFFICACY OF ETHANOL AND AQUEOUS EXTRACTS OF BANGKA LOCAL LEAF EXTRACT AGAINST Aeromonas hydrophila

2026-08-06T10:30:57+08:00

Motiled Aeromonas Septicemia (MAS) is a disease caused Aeromonas hydrophila. It is opportunistic pathogen that can cause fosh mortality up to 90%. The use antibiotics to control MAS has led resistance on bacteria, therefore the use herbal for alternative treatments. The aim riset is to determine the effect of different solvents on the antibacterial activity of leaf extracts of bini simpur, kedebik, and mengkirai against Aeromonas hydrophila. The methods was diffusion with two types of solvents (ethanol and distilled water). Phytochemical screening included alkaloids, tanins, sapponins, triterpenoids, and flavonoids. The results of phytochemical screening showed that ethanol extract contain tanins, sapponins, triterpenoids, and flavonoids. The highest inhibition zone was bini simpur extract with ethanol, ant the lowest was mengkirai extract with distiked water.

POPULATION BIOLOGY OF SNAKEHEAD FISH Channa striata (BLOCH, 1793) IN WAY TULANG BAWANG RIVER, LAMPUNG

2026-08-06T15:24:00+08:00

WATER QUALITY OF TUBIFEX WORM CULTURE IN VERTIQUA TECHNOLOGY

2026-08-03T20:30:32+08:00

Tubifex sp. culture is an important source of natural feed with high nutritional value for fish larvae and juveniles. The dependence on natural harvesting results in unstable availability, highlighting the need for an efficient cultivation system capable of maintaining water quality. This study aimed to evaluate the water quality of Tubifex sp. cultured using Vertiqua technology integrated with a recirculating system and a Biofical Filter. The experiment was conducted from November 2025 to January 2026 at the Bossbaster experimental pond, Sukabumi Regency, Indonesia. Observed parameters included temperature, pH, dissolved oxygen (DO), ammonia, nitrite, nitrate, phosphate, alkalinity, turbidity, and odor indicators. Temperature, pH, and DO were measured daily, while the remaining parameters were analyzed at the beginning, middle, and end of the culture period. The results showed that the average temperature (26.4°C), pH (7.45), alkalinity (105.8 mg/L), nitrate (4.65 mg/L), phosphate (0 mg/L), and turbidity (0 NTU) remained within acceptable ranges for Tubifex culture. However, dissolved oxygen (3.51 mg/L), ammonia (1.515 mg/L), and nitrite (0.236 mg/L) exceeded the recommended water quality standards. Despite these limitations, the Biofical Filter integrated into the Vertiqua system maintained relatively stable water quality, reduced odor, and minimized organic waste accumulation throughout the culture period. Therefore, Vertiqua technology has considerable potential for Tubifex culture on limited land, although further optimization of the filtration system is required to improve dissolved oxygen and reduce ammonia and nitrite concentrations.

APPLICATION OF GOOD MANUFACTURING PRACTICES ON SHREDDED GIANT CATFISH (Arius thalassinus) PROCESSING AT PROCESSING AND MARKETING GROUPS SRIKANDI PANGANDARAN

2024-07-11T14:17:11+08:00

Food safety is a critical aspect of the food processing industry as it directly affects product quality and consumer health. The implementation of Good Manufacturing Practices (GMP) and Sanitation Standard Operating Procedures (SSOP) in small-scale household food processing industries is essential to ensure the safety and quality of the products. This research aims to evaluate the implementation of GMP and SSOP systems and determine the quality of shredded giant catfish produced at Poklahsar Srikandi, Pangandaran. The research was conducted from August 2023 to January 2024 using a case study method. The research procedure included observation of processing stages, analysis of prerequisite program deviations, and chemical content testing. The data obtained were compared and analyzed descriptively, referring to the Regulation of the Minister of Marine Affairs and Fisheries of the Republic of Indonesia No. 17 of 2019 and SNI 7690.2013. The analysis showed 8 minor deviations, 8 major deviations, and 1 serious deviation in the process of shredded catfish processing at Poklahsar Srikandi. Based on the number of deviations in the application of GMP and SSOP, Poklahsar Srikandi has a C predicate. The results of the chemical parameter testing showed that the samples met the standards for water content and protein content, with water content of 12.60% with a maximum limit of 15% and protein content of 25.62% with a maximum limit of 15%.

ANALYSIS OF DUNES PRESSURE AND VULNERABILITY IN TOURISM BEACH IN PANGANDARAN REGENCY, WEST JAVA

2026-09-30T13:42:58+08:00

Not only does it protect the coastline from erosion and storm surge that can pose a risk to the environment and infrastructure on land, dunes also has an important role as a habitat provider for flora and fauna. However, the increasing intensity of human activity on tourist beaches has a negative impact on dunes which can affect ecosystems, coastal resilience to storms and exacerbate coastal vulnerability. It is necessary to conduct research to analyze the vulnerability and pressure on dunes in the tourist beach area of Pangandaran Regency, West Java so that it can be an important input in maintaining the ecological balance and sustainability of this tourist beach area. The research was conducted directly on four tourist beaches, namely Batu Hiu Beach, Karang Nini Beach, Pananjung Beach, and White Sand Beach using scoring dune vulnerability assessment and euclidean algorithm approach to determine the differences in vulnerability and pressure experienced by each beach. The results show that the dunes in Karang Nini and White Sand Beach are in low vulnerability category, with the main influence coming from the physical parameters of beach conditions. Meanwhile, dunes on Batu Hiu and Pananjung Beach are in moderate vulnerability category with the dominant influence of human parameters due to their location on the side of the road, making the dunes on these two beaches more vulnerable to pressure. From the results of the study, appropriate handling is needed to reduce the vulnerability index both from physical parameters, beach conditions, and human parameters.

NUTRIENTS FROM Avicennia alba AND Rhizophora mucronata IN MANGROVE AND CRAB CONSERVATION AREA, TARAKAN CITY

2026-06-13T07:06:46+08:00

Mangrove ecosystems exhibit high productivity resulting from the decomposition of litter, which contains various nutrients such as carbon, nitrogen, and phosphorus that benefit both the mangrove plants themselves and the surrounding aquatic ecosystems. This study aims to determine the nutrient content (carbon, nitrogen, and phosphorus) of decomposed litter from Avicennia alba and Rhizophora mucronata. The study was conducted in the Tarakan City Mangrove and Crab Conservation Area, North Kalimantan, from April to June 2026, using a quantitative method with a descriptive-exploratory approach, taking into account the characteristics of the dominant mangroves at three study sites. The results showed that the decomposition rate of A. alba mangrove litter ranged from 0.22 to 0.64 grams/day and that of R. mucronata ranged from 0.25 to 0.67 grams/day; furthermore, no leaf litter from either A. alba or R. mucronata decomposed 100%. The carbon content of A. alba ranged from 9.45% to 13.45%, nitrogen from 0.64% to 0.72%, and phosphorus 0.25% to 0.29%, while the carbon content of R. mucronata ranged from 21.50% to 22.45%, nitrogen from 0.58% to 0.83%, and phosphorus from 0.06% to 0.009%. The values of the physical and chemical parameters of the water still support the decomposition process of litter.

THE ROLE AND IMPACT OF THE DWI TIRTO MULYO COOPERATIVE ON EMPOWERING PARTICIPATION AND THE SOCIO-ECONOMIC CONDITIONS OF MEMBERS OF KALIGRENJENG VILLAGE, BLITAR

2026-06-02T21:06:57+08:00

This study aims to analyze the role and impact of the Dwi Tirto Mulyo Cooperative on empowering participation and the socio-economic conditions of members in Kaligrenjeng Village, Blitar Regency. This research uses a qualitative descriptive method with data collection techniques including observation, interviews, questionnaires, and documentation. The results show that the cooperative has a significant positive impact on members’ socio-economic conditions, indicated by improvements in employment (89%), income (98%), and access to capital (86%), all categorized as agree. Member participation is categorized as high in decision-making (94.74%), implementation (93.66%), benefit utilization (96.36%), and supervision (83.64%). Furthermore, the cooperative’s role in member empowerment is categorized as very high with an average of 94.13%. Overall, the cooperative has effectively improved members’ welfare, although improvements are still needed in supervision and financial service development.

THE EFFECT OF DIFFERENT TYPES OF BAIT ON THE CATCHES OF MANGROVE CRABS (Scylla serrata) USING FOLDING TRAP FISHING GEAR IN THE WATERS OF TANJUNG PECINAN MANGARAN DISTRICT SITUBONDO REGENCY

2026-07-25T21:28:00+08:00

This study was conducted to assess the effect of different bait types on the catch of mangrove crab (Scylla serrata) using a collapsible trap in the waters of Tanjung Pecinan, Mangaran District, Situbondo Regency. The purpose of this study was to determine the effect of bait type on mangrove crab catches. This study used a Randomized Block Design (RBD) method which included 3 treatments and 9 fishing trips. The bait types used were trash fish, field snails, and shrimp. Ten collapsible traps were used for each treatment, randomly spaced 5 meters apart. Additionally, supporting parameters included water quality, waves, current speed, temperature, and tides. Data were analyzed using SPSS with normality tests, homogeneity tests, ANOVA tests, and LSD tests. The data analysis concluded that trash fish and shrimp baits yielded better catches than golden apple snails.

ANTIBACTERIAL ACTIVITY OF Sargassum sp. IN INHIBITING Vibrio sp. ISOLATED FROM CANTANG GROUPER (Epinephelus fuscoguttatus x Epinephelus lanceolatus)

2026-07-25T21:28:07+08:00

Treatment of vibriosis using natural ingredients such as Sargassum sp. extract in cantang grouper cultivation activities needs to be studied. Testing the effectiveness of solvents in producing phytochemical compounds as antibacterials and modifying the extraction process to make it simpler aims to be replicated by farmers in the field. The tested bacterial isolates were isolated directly from cantang grouper fish showing symptoms of vibriosis from fish farmers in Senggarang Besar, Tanjungpinang City. Testing the antibacterial activity of Sargassum sp. extract in inhibiting the growth of Vibrio sp. was carried out through an inhibition zone test using the paper disc diffusion method (Kirby-Bauer method). The results showed that the use of 70% alcohol solvent in the extraction process resulted in a clearer and better inhibition zone diameter of 13 mm at the highest treatment concentration (10%) compared to the extract using 96% alcohol solvent at the same concentration of 11.67 mm. It should be noted that the inhibition zone formed is classified as partial because it is not clear or completely clear due to the presence of thin bacterial growth in the zone even though the circle shape of the inhibition zone is quite clear. The use of 70% alcohol solvent can be used for the extraction process of Sargassum sp. considering that it is cheaper and the results are better than 96% alcohol based on the results shown through this study.