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INDONESIA
Jurnal Perikanan Universitas Gadjah Mada
Published by Universitas Gadjah Mada
ISSN : 08536384     EISSN : 25025066     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology
Jurnal Perikanan Universitas Gadjah Mada are published to promote a critical review of the various investigative issues of interest in the field of fisheries between the researchers, academics, students and the general public, as a medium for communication, dissemination, and utilization of wider scientific activities.
Arjuna Subject : -
Articles 460 Documents
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An Ethnozoological Study: Utilization of Sharks Fishermen's Community of Brondong Village, Lamongan Regency Setyawan, Dwi; Farid, Saif Aiman; Hadi, Samsun; Permana, Fendy Hardian; Prihanta, Wahyu
Jurnal Perikanan Universitas Gadjah Mada Vol 26, No 1 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.87118

Abstract

The problems studied focus on the influence of ethnozoological knowledge and family economic Status on the use of endangered sharks by the people of Brondong village. The Data were taken in the form of (1) ethnozoological knowledge of the community, (2) Family economic status, (3) Attitudes, and (4) Shark utilization behavior. Data collection is done by survey method with the help of questionnaire, structured interview, and direct observation. Path - analysis is performed to determine the relationship of the proposed variables. Not only that, the relationship of variables can also be explained by descriptive analysis. The results showed that the Brondong ethnic community still adheres to Airlangga and Majapahit culture by maximizing fishing activities, one of which is the behavior of shark utilization for sale and consumption. While the results of Block 1 path analysis showed a significant influence of ethnozoological knowledge on attitudes, amounting to 0.446. While the results of Block 2 showed the influence of attitudes towards shark utilization behavior, had a significant path coefficient of 0.253. It is concluded that ethnozoological knowledge affects indirectly the utilization of shark behavior by passing attitude.
Major Fisheries Species along with Their Contribution to the National Fishery Production in Bangladesh Manik, Mehedi Hasan
Jurnal Perikanan Universitas Gadjah Mada Vol 26, No 1 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.87151

Abstract

In Bangladesh, due to its geographical location, fisheries play a significant role in socioeconomic development and food security. The country has 57 major rivers and nearly 118,813 km2 marine area in the Bay of Bengal. Almost 260 freshwater and 740 marine water fisheries species are found in Bangladesh. There is a lack of studies dealing with species-wise production status and growth rate in Bangladesh. This study is conducted to discover the recent trend of fisheries yield with major species-wise production share and growth rate. The required data have been collected from the website of the Department of Fisheries of the government of Bangladesh. Fisheries yield is increasing in Bangladesh, but the inland culture segment is growing fast compared to inland capture and marine segments as the slope of inland culture is 1.1, higher than inland capture and marine. Species converging in the major carp group are the highest, over 21%, contributor to the national yield. As a single species, the Hilsa takes the maximum production share, around 12%. The contribution of marine species is poor, approximately 15% of the total yield, compared to the potential. Bangladesh may raise the required export diversification based on fisheries resources. To do so, the policymakers of Bangladesh should raise funds for blue economic research, human resource development, and technology import.
Perspectives of Fishers on the Incident of Fish Kills in Coastal Waters in Rivers State, Nigeria Olopade, Olaniyi Alaba; Dienye, Henry Eyina; Oroma, Bestman Succes
Jurnal Perikanan Universitas Gadjah Mada Vol 26, No 1 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.89782

Abstract

This study was conducted to assess fishermen's perspectives on the massive fish kill incident in coastal waters in Rivers State, Nigeria. Primary data were collected using questionnaires from 101 randomly selected fishermen and the data were evaluated using descriptive statistics. The results showed that fishing was the main occupation of the respondents and the interviewed fishermen have fishing experience in the region studied and knowledge of their fishery. The results showed that 53.3 percent of fishermen attributed the strange phenomenon to pollution, while 19.8 percent of fishermen cited infection and disease as the cause of the fish kills. The majority of respondents (94%) reported that croaker fish species were particularly affected in the study area. Other observations include fish swimming on the surface or jumping onto shore and affected fish washing up on shore. The unusual appearances of the dead fish commonly reported by respondents were as follows: fin rot, open mouth, disease spots and deep blue gills. About half of the respondents (50.5%) gave a range of 1,000 - 5000 dead fish and a size class of the dead fish of more than 30 cm. Most respondents (79.2%) indicated that the government has not taken any action. Few of those surveyed reported government action on sea clean-up exercises to remove dead fish, end oil spillage and bunkering as measures put in place by the government. The study recommended partnerships between the government and fishermen and fishermen's groups as stakeholders are required to address the concerns about marine waters.
Antioxidant Activity and Phytochemical Screening of Rhizopora mucronata Mangrove Leaf Extract from Mangrove Botanical Garden, Surabaya City, Esat Java Rahmawati, Rahmawati; Sanjaya, Yushinta Aristina; Pratiwi, Yunita Satya; Hendrawan, Elistiya Putri Nuraini; Salsabila, Zhafa Nesya; Amalia, Tania
Jurnal Perikanan Universitas Gadjah Mada Vol 27, No 1 (2025)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.90770

Abstract

Rhizophora mucronata is a type of mangrove plant that acts as a natural antioxidant which is used as a food ingredient and traditional medicine. The aim of this research was to determine the profile of secondary metabolites, antioxidant activity and total phenols of R. mucronata leaf extract. R. mucronata leaves were obtained from Gunung Anyar District, Surabaya City and then extracted using three solvents with different polarities, namely n-hexane, ethyl acetate, and ethanol. Mangrove leaf extract (Rhizopora mucronata) was followed by phytochemical testing using color testing, antioxidant activity testing using the DPPH method, and determining phenol content using the Folin-Ciocalteu method. Phytochemical tests show that all R. mucronata mangrove leaf extracts contain secondary metabolites such as flavonoids, saponins, steroids, triterpenoids and tannins with total phenols ranging from 0.04%-6.7%. The antioxidant activity of n-hexane, ethyl acetate, and ethanol extracts were 4.9 mg ± 0.82%, 1.7 mg ± 0.17%, and 0.21 mg ± 1.9%, respectively.
Hydrolysis of Polysaccharide Caulerpa racemosa Seaweed with Fermentation Lactobacillus plantarum SK (5) Sudibyo, Muhammad Farid; Santoso, Joko; Desniar, Desniar
Jurnal Perikanan Universitas Gadjah Mada Vol 26, No 1 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.91045

Abstract

Hydrolysis of polysaccharides can increase biological activity by changing the structure of polysaccharide functional groups and reducing molecular weight. Enzyme hydrolysis is an environmentally friendly hydrolysis method because it does not form toxic by-products. Lactobacillus plantarum can produce amylase and cellulase enzymes, which can be used to hydrolyze C. racemosa polysaccharides. This research aims to determine the best fermentation time and starter concentration in the C. racemosa polysaccharide hydrolysis process and the C. racemosa glucose concentration before and after fermentation. The research was divided into phases: phase I and II. The fermentation time in Phase I is six days, while in Phase II, it is 48 hours. The starter concentrations used are 0%, 5%, and 10%. The analysis showed that differences in starter concentration and fermentation time caused changes in the total values of LAB, TTA, pH, reducing sugar and glucose concentration. The best treatment was shown by adding 5% starter with a fermentation time of 24 hours.
Dry Media Formulation to Increase Productivity and Quality of Silkworms (Tubifex sp.) as A Natural Feed Development for Aquaculture Corne, Yohanes; Rahardjo, Sinung; Nurhudah, Moch.; Wiradana, Putu Angga
Jurnal Perikanan Universitas Gadjah Mada Vol 26, No 2 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.91351

Abstract

Silk worms (Tubifex sp.) are a type of natural food that is widely used for the needs of fish farming activities, especially in the freshwater fish hatchery phase. This study aimed to determine the effect of providing dried feed/media with varying doses on the productivity of silk worms. The study was conducted using a Completely Randomized Design (CRD) with three treatment groups and four replications which included administration of dry media at a dose of (P1) 150 g/m2 (P2) 250 g/m2 (P3) 350 g/m2. The initial silk worm seeds were obtained from silk worm collectors or sellers in Cipayung-East Jakarta. Maintenance of silk worms was carried out for 55 days. The results of the diversity analysis showed that there was a significant difference in the dose of dry media in cultivating silk worms (P≤0.05). The best absolute weight growth, population growth, and productivity were shown in the media treatment with a dose of 250 g/m2 (P2) with absolute biomass growth of 408.7 g, population growth of 209,381 individuals, and productivity of 1.3/m2/cycle. The results of water quality observations are still in a relatively optimal range. Silk worms have the potential to be developed as a safe, environmentally beneficial, and inexpensive natural food for cultivated animals.
The Fermented Cassava (Manihot esculenta C.) Flour and Bioimun as Additional Feed for the Juvenile Catfish (Clarias gariepinus) to Improve Growth, Immunity, and Survival Asih, Supadmi; Hardi, Esti Handayani; Fitriyana, Fitriyana
Jurnal Perikanan Universitas Gadjah Mada Vol 26, No 1 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.91538

Abstract

The availability of fish feed has remained an obstacle in the fish cultivation until now. The dependence on fish flour, soy flour, the imported cornstarch has not been solved, though the natural resource in Indonesia supports the dependence of this raw material availability. This research was conducted by testing the use of the fermented cassava flour to substitute cornstarch as the catfish feed, by adding natural drug product, BIOIMUNÒ, which positively affected growth, immunity, and production. Research methodology used was the Completely Randomized Design with six treatments and three repetitions. Fishes with average weight of 10 g and length of 10 cm were raised in the aquarium with dimension of 60x40x40 cm, with the density of 10 fishes per aquarium. The research was conducted for 60 days with observation every 14 days. Compositions of cornstarch and cassava flour were P1 (0/200), P2 (100/100), P3 (75/125), P4 (50/150), P5 (25/175), and P6 (commercial feed), added with BIOIMUNÒ at 20 ml/kg from the extracts of Solanum ferox and Zingiber zerumbet. Feed was given three times at a percentage of 5%. This research showed the result that the best growth was in treatment (P3), with 75 g of cornstarch and 125 g of cassava flour (75/125). The highest absolute weight gain was in P3 at 132.67 ± 8.33 g. The immunity system testing was in accordance with the result of phytochemical test of positive alkaloid, negative flavonoid, and negative steroid. Survival Rate (SR) based on the variance analysis (ANOVA) had an insignificant effect (P>0.05) 93.00-100.00%. P3 feed conversion rate was 5.35±0.23. Hematocrit level and total erythrocyte with a decent score and total leukocyte increased from P6. Feed proximate test was in accordance with the standard. Total bacteria were in the normal range, the contamination test on heavy metal proved no harm against the catfishes, and the water quality was normal. In terms of economic analysis, P1-P5 were more affordable than (P6), so that it can be concluded that the fermented cassava flour can be used as a replacement of corn by adding BIOIMUNÒ as the catfish feed.
SWOT and QSPM Analysis for The Implementation of Basic Processing Feasibility in Pindang Fish Quality Development in Pekalongan Regency, Central Java Rosihun, Muhammad; Swastawati, Fronthea; Riyadi, Putut Har
Jurnal Perikanan Universitas Gadjah Mada Vol 26, No 2 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.91744

Abstract

 Indonesian salted-boiled processing is a type of fish processing that is widely practiced by fish processors in the Pekalongan Regency. This fish process will produce a product known as pindang. basic processing feasibility is one of the mandatory programs that must be implemented by fish processing businesses to ensure that the products have good quality and safety. For this reason, a series of efforts are needed to encourage pindang fish processors to be able to implement this program. This study aims to identify internal and external strategic factors, create alternative strategies, and prioritize policy strategies to encourage the implementation of basic processing feasibility for pindang quality development. The research was conducted using in-depth interviews with key stakeholders with an interest in this issue. Field observations were conducted to complement the interviews that had been conducted. The SWOT and QSPM analyses were used to analyze the data. The analysis yielded six alternative strategies for carrying out the basic processing feasibility program, with the priority strategy being the optimization of assistance by fisheries extension officers.
Allocative Efficiency of Tuna Fishing Business in South Prigi Waters, East Java Harahab, Nuddin; Anandya, Asyifa; Wardani, Mentari Puspa; Sofiati, Dwi; Supriyadi, Supriyadi; Sigit, Raehan Kamaludin
Jurnal Perikanan Universitas Gadjah Mada Vol 26, No 2 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.92544

Abstract

Tuna resources have an important economic value and are spread across most of Indonesian waters, ranging from western Indonesian waters to eastern Indonesian waters. One of the distributions of tuna fish in Indonesia is East Java Province. Tuna fishing business is an economic activity carried out by small-scale fishermen by combining resources such as fishing costs, fishing experience, frequency of fishing, ship tonnage, engine power, and the amount of fuel used for fishing) to achieve the main goal of making a profit. This research is important to determine the factors that affect the productivity of tuna fishing business, analyze the allocative efficiency of the factors of production of tuna fishing business, and analyze the profits obtained by fishermen in their business of catching tuna in the waters of Prigi south of East Java. The research method used is descriptive through observation interviews and documentation. This research was conducted on tuna fish fishermen on the coast of Prigi, East Java Regency. The results showed that the conclusion of the factors that affect the productivity of tuna fishing business are fishing costs, fishing experience, frequency of fishing and ship tonnage. The use of fishing costs, frequency of fishing, and ship tonnage used by fishermen still has not reached the allocatively efficient level. The average production cost per year incurred is still relatively high, not proportional to the profit earned each year. This is because the biggest cost incurred is the cost of diesel fuel.
Morphometric and Meristic Characters of Putak Fish (Notopterus notopterus) in the Rokan River Basin Rokan Hilir Regency Riau Munte, Aini; Setyoko, Setyoko; Jayanthi, Sri
Jurnal Perikanan Universitas Gadjah Mada Vol 26, No 2 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.92751

Abstract

Putak fish (Notopterus notopterus) is a type of fish native to Indonesia which is protected based on Government Regulation Number 7 of 1999. Habitat and environmental factors are one of the factors that influence the survival, morphological and biological characteristics of putak fish. The waters of Rokan Hilir Regency, Riau, are one of the habitats of the putak fish (Notopterus notopterus). This research aims to determine the morphological, biological and physicochemical characteristics of the aquatic environment of putak fish (Notopterus notopterus) in the Rokan River, Rokan Hilir Regency, Riau. The method used in this research is a two-station observation method, identifying research stations using a purposive sampling method. Station 1 is in a community settlement and Station 2 is in an oil palm plantation on the riverbank. Data analysis uses quantitative description with simple linear regression. The results showed that at each station there were 22 fish consisting of 11 male fish and 11 female fish. The results of the morphological characteristics of total length are more dominant in female fish with an average length at station 1 of 211.91 mm and an average of 255.91 mm at station 2 compared to male fish with an average length of 211.91 mm exceeding 178.55 mm at station 1. and an average of 222.00 mm at station 2. Regression analysis shows that the morphology of putak fish (Notopterus notopterus) is in a positive biometric criteria state or at station 2 with TL/SL characters, while the other characters are negative. biomass state. The results of data on the biological characteristics of putak fish (Notopterus notopterus) at station 2 are higher than at station 1. The physicochemical factors of the two stations are differences in temperature, where the temperature at station 2 is higher than at station 1.

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