Jurnal Perikanan Unram

SELECTIVITY AND ENVIRONMENTAL FRIENDLINESS OF PURSE SEINE FISHING GEAR IN WATERS KUPANG BAY – EAST NUSA TENGGARA

Luthfiah Usman, Andi Risda Fitrianti Abudarda — Wed, 29 Jan 2025 00:00:00 +0800

MACROALGAE BIODIVERSITY IN GILI MATRA CONSERVATION AREA

Disa Aulia Rahmi, Edwin Jefri, Nurliah Buhari, Hotmariyah Hotmariyah — Wed, 29 Jan 2025 00:00:00 +0800

Macroalgae are a group of lower marine plants commonly referred to as thalloid plants. The diversity of macroalgae in tropical regions, particularly in eastern Indonesia, is very high due to the area being part of the Wallacea region. This study aims to determine the level of diversity and distribution of macroalgae in these waters. The method used is the line transect method, with data analysis including ecological indices and distribution patterns. The results show that the diversity index ranges from 2.45 to 2.80, which falls into the medium category. The evenness index ranges from 0.80 to 0.81, classified as high, while the dominance index ranges from 0.09 to 0.11, which is considered low. The distribution pattern of macroalgae at stations 1, 2, and 3 ranges from 1.37 to 1.49, indicating a clustered distribution pattern. This suggests that the environmental conditions in the waters of Gili Air are stable and conducive to the growth of macroalgae, with no species dominating the ecosystem.

SPECIES COMPOSITION AND BIOLOGICAL ASPECTS OF CUTTLEFISH LANDED AT TANJUNG LUAR FISH LANDING SITE EAST LOMBOK DISTRICT

Baiq Hilda Astriana, Intan Ramdini Zakrah, Sadikin Amir — Wed, 29 Jan 2025 00:00:00 +0800

Cuttlefish are a fishery resource classified under the class Cephalopods. The potential for cuttlefish fisheries in Indonesia is quite significant, considering the country has vast and diverse marine waters. The demand for fishery products, including cuttlefish, both in domestic and international markets, continues to increase. Despite the great potential, sustainable management and protection of marine ecosystems are key to ensuring that the utilization of these resources does not harm the environment and can continue in the long term. Research on the species composition and biological aspects of cuttlefish is necessary to understand the condition of the aquatic ecosystem. Data collection was carried out using the accidental sampling method and direct surveys conducted. A total of 457 specimens were obtained during the study. Data analysis included species composition analysis, gender analysis, and the analysis of the length-weight relationship of cuttlefish. The result of this study shows that the captured cuttlefish consists of two species: Sepia latimanus and Sepia pharaonis. The number of males is higher than females; however, the ratio is approximately 1:1. Based on this result, the sex ratio is categorized as nearly balanced, with a ratio of 1:1. The length-weight relationship of all landed cuttlefish, specifically the two species Sepia latimanus and Sepia pharaonis, shows a negative allometric growth, where length growth is faster than weight growth. The purpose of this study is to determine the composition of the type, sex ratio and the relationship between the length and weight of the landed cuttlefish.

THE EFFECT OF FERMENTED BRAN TIME ON IMPROVING WATER QUALITY AND GROWTH OF VANNAME SHRIMP (Litopenaeus vannamei)

Suri Purnama Febri, Adnan Syafi`i, Teuku Fadlon Haser, Ikhsanul Khairi — Wed, 29 Jan 2025 00:00:00 +0800

Vanname shrimp is one of the commodity products that have high economic value in Indonesia and abroad. This study aims to determine the right time to give rice bran fermentation in improving the quality and growth of vannamei shrimp. The study used an experimental method with 4 treatments that were repeated as many as 3 replicates. The treatments tested were P1 giving bran fermentation on day 0 before stocking, P2 giving bran fermentation on day 10 after stocking, P3 giving bran fermentation on day 20 after stocking, and P4 giving bran fermentation on day 30 after stocking. The results of the treatment showed a significant effect on absolute length growth, absolute weight growth, and daily growth rate. Meanwhile, survival and feed conversion ratio did not have significant differences, as well as water quality. In general, water quality was not affected by the treatments given. The highest absolute length growth was produced in the P3 of 4.1 ± 0.01cm, while the lowest absolute length growth was obtained in the P1 with a result of 3.6 ± 0.0. The highest absolute weight growth was obtained in the P3 with the results of 2.61 ± 0.01gr, while the lowest absolute weight growth was produced in the P1 of 2.13 ± 0.03gr. Similarly, the highest daily growth rate was produced in the P3 with the results of 3.6 ± 0.0.

Keywords: Vanname shrimp, fermentation, rice bran, water quality, growth

THE INFLUENCE OF STOCKING DENSITIES ON WHITE SHRIMP (Litopenaeus vannamei) REARED USING INTENSIVE SYSTEM: PRODUCTION PERFORMANCE AND WATER QUALITY

Wed, 29 Jan 2025 00:00:00 +0800

ABSTRACT

The increasing trend of vaname shrimp cultivation production encourages farmers to increase their cultivation production. The success of vaname shrimp cultivation can be seen from the ability to measure the capacity of shrimp biomass in maintenance activities and stocking density patterns based on the maximum capacity of the pond in each plot. The purpose of this study was to analyze vaname shrimp cultivation activities for a period of 2 years (2023-2024) in intensive system ponds based on different stocking density patterns at 140 shrimp/m² and 190 shrimp/m². This study was carried out for 6 cultivation cycles, each cycle was carried out for 100 days. The results of statistical tests showed that the shrimp stocking density pattern had a significant effect (p <0.05) on biomass, productivity, survival and feed conversion ratio. The average survival rate of 140 shrimp/m² stocking density was 85.33%, biomass was 3,327.75 kg, FCR was 1.44 and productivity was 30.8 tons/ha. The average survival rate with a stocking density of 190 shrimp/m² was 73.66%, biomass 1,981.87 kg, FCR 1.59 and productivity 12.38 tons/ha. This shows that biomass, SR, and productivity decreased while FCR tended to increase in cultivation with a stocking density of 190 shrimp/m². The results of water quality showed an increase in the Total Organic Matter value of 110-250 mg/l at a stocking of 190 shrimp/m². This shows that there is an increase in organic matter in the maintenance pond which affects the survival of shrimp in the pond so that it affects the biomass and productivity of whiteleg shrimp. A stocking density of 140 shrimp/m² can be recommended for application in intensive whiteleg shrimp cultivation.

Keywords: intensive system, stocking density, water quality, whiteleg shrimp

PLANKTON AND WATER QUALITY ANALYSIS ON THE PRODUCTION PERFORMANCE OF WHITE SHRIMP (LITOPENAEUS VANNAMEI)

Diklawati Jatayu, Andina Chairun Nisa, Tia Amelia — Wed, 29 Jan 2025 00:00:00 +0800

The abundance, diversity, and dominance of phytoplankton affect water quality which can directly affect the success of cultivation. This study was conducted to analyze the diversity of species and dynamics of plankton abundance in shrimp (Litopenaeus vannamei) cultivation in intensive white shrimp ponds in Sumenep, Madura. Observations of plankton, water quality, and white shrimp production were carried out in four ponds for ± 2 months. Data analysis was carried out on water quality data, plankton community structure and white shrimp cultivation production performance. Water quality data and production performance were analyzed descriptively qualitatively while plankton community structure data (biological index) were analyzed descriptively quantitatively. The results of the identification of zooplankton types obtained from the samples amounted to 2 classes, consisting of 7 genera of protozoa and 1 genus of Rotifera. The most abundant zooplankton is the Protozoa Class with 7 genera. The highest plankton abundance is from the Genus Chlorophyta (74.67% ± 4.49%), then the second highest is from the Genus Cyanophyta (18.01% ± 3.40%). The results of the diversity index analysis (H’) in pond 5 were 2.246 indicating high diversity, while ponds 6,7, and 8 showed moderate diversity. The uniformity index showed that pond 5 had a high uniformity index with a value of 0.66 while ponds 6,7, and 8 had moderate uniformity. The dominance index analysis showed that in pond 5 with a value of 0.978 there were dominant species, while ponds 6, 7, 8 did not have dominant species. Water quality observations showed that there were nitrate parameters that exceeded the optimum standard. The performance of white shrimp cultivation showed better results in pond 5 indicated by ADG of 0.35 g/day, ABW 14.9 g, FCR 1.6 and SR 71%.

FEASIBILITY EVALUATION STUDY OF VANAME SHRIMP (Litopenaeus vannamei) CULTIVATION BUSINESS WITH TWO TYPES OF CAPITAL IN THE BUMI DIPASENA FISHING AREA, RAWAJITU TIMUR DISTRICT

Ulfah Lutfiani, Zainal Abidin, Agus Setyawan, A Aman Damai, Maya Riantini — Wed, 29 Jan 2025 00:00:00 +0800

The research aims to determine the evaluation of the financial feasibility and sensitivity of the vannamei shrimp cultivation business in the Dipasena Earth Farming Area, East Rawajitu District on two types of capital, namely independent and borrowed capital. The research was carried out in the Dipasena Earth Farming Area, East Rawajitu District in April – May 2024. The total cost of the vaname shrimp cultivation business was IDR 72,454,423 in independent capital and IDR 80,003,175 in borrowed capital with business profits of -Rp 9,915,373 in independent capital and - IDR 20,596,075 in borrowed capital for 3 harvest periods in one year. Based on the calculation results Net Present Value (NPV), B/C Rasio, R/C Rasio, Internal Rate of Return (IRR), and Payback Period (PP) in both types of capital, the business is included in the criteria of not being feasible. Sensitivity analysis shows that businesses with both types of capital are sensitive to changes in conditions, in this case an increase in operational costs of 2.75% and a decrease in production of 10%.

NUTRITIONAL ANALYSIS OF KOMO TUNJABI (Euthynnus affinis) SAMOSA FORTIFIED WITH SEAWEED Gracilaria sp.

Jawiana Saokani Sofyan, Siti Atika Alwi, Harianti Harianti — Wed, 29 Jan 2025 00:00:00 +0800

FACTORS INFLUENCING THE WELFARE OF RAJUANGAN FISHERMEN IN THE EASTERN COASTAL WATERS OF LAMPUNG PROVINCE

Wed, 29 Jan 2025 00:00:00 +0800

The objective of this study is to identify the factors influencing the welfare of blue swimming crab fishermen in the eastern coastal region of Lampung Province. The study was conducted in three regencies: East Lampung, Central Lampung, and Tulang Bawang, with a sample of 100 blue swimming crab fishermen. Daily fishermen use boats with a capacity of 1-2 GT, while babangan fishermen use boats with a capacity of more than 2 GT. The average catch for daily fishermen ranges from 1.99 to 3.18 kg per trip during the east season and from 9.08 to 10.33 kg per trip during the west season. Babangan fishermen catch an average of 74 kg per trip during the east season and 222 kg per trip during the west season. The factors influencing the welfare of fishermen during the east season are income level (X1), number of family dependents (X4), housing conditions (D1), ease of access to education (D3), and ease of access to transportation (D4). During the west season, the influencing factors are income level (X1), education level (X3), number of family dependents (X4), age of the head of the family (X5), ease of access to healthcare services (D2), and ease of access to education (D3).

PATRON-CLIENT RELATIONSHIP PATTERN IN FISHERY BUSINESS CATCH IN DUDEPO PORT, BOLAANG UKI DISTRICT SOUTH BOLAANG MONGONDOW REGENCY

Erlansyah Erlansyah, Mukhlisnah Djalil, Mohamad Pidra Hasani — Wed, 29 Jan 2025 00:00:00 +0800

The rapid activity of increasing fishing productivity creates an intense relationship called patron and client between ship owners and ship workers who are often in conditions of uncertainty or unequal relations. The aim of this research is to determine relationship patterns, supporting factors and inhibiting factors in patron-client relationships in fisheries businesses. The research method used is a case study by examining phenomena comprehensively, intensely, in detail and in depth. The data analysis used is qualitative analysis using three stages including; data reduction, data presentation, and drawing conclusions. The research results show that the patron-client relationship at Dudepo Port is a relationship of reciprocity or exchange in both economic and non-economic forms. For example Patron; Apart from providing wages to clients for their services and energy, they also provide living space in the form of housing, political protection and other social assistance. There are three supporting factors for patron-client relationships, namely; kinship, trust, and remuneration. Meanwhile, factors inhibiting patron-client relations are the price of fish, patron superiority, and profit sharing.