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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 13 Documents
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Search results for , issue "Vol 26, No 2 (2024)" : 13 Documents clear
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.
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.
Application of Barracuda Fish Skin Gelatin (Sphyraena barracuda) on Characteristics of Liquid Smoke Flavored Ice Cream Sitoresmi, Riris; Swastawati, Fronthea; Suharto, Slamet
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.92919

Abstract

Gelatin can be applied to ice cream as a stabilizer. The flavors of ice cream on the market only focus on ordinary flavors such as chocolate, vanilla, and strawberry. Liquid smoke as a flavoring in ice cream can be used as an innovation. The purpose of this study was to determine the best concentration of liquid smoke in ice cream and determine the effect of adding gelatin with different concentrations on the physical quality of ice cream. The treatments used were liquid smoke with different concentrations (0%, 0.3%, 0.5%, and 0.7%) in the opening study and gelatin concentrations of 0%, 0.2%, 0.4%, and 0.6% in the main study with three repetition times. Parameters observed were hedonic, overrun, melting time, pH, and viscosity. The analysis showed that all test treatments had a significant effect (P<0.05). Adding liquid smoke with a concentration of 0,7% was the best treatment, with a hedonic value of 7.97<µ<8.17 (preferred by the panelists). The best treatment results for barracuda fish skin gelatin on the characteristics of ice cream were at a concentration of 0,4% with overrun results of 62,67% ± 0,58, melting speed 31.37±0.95 minutes, pH 6.33±0.02, viscosity of 2567.67±142.38 cP and hedonic value of 7.61 <µ <7.79 (preferred by the panelists).
The Effect of Adding Brackish Snail (Faunus ater) Flour to the Feed on the Growth of Dumbo Catfish (Clarias gariepinus) Sah, Risti; Herman, Roffi Grandiosa; Pratama, Rusky Intan; Haetami, Kiki
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.93023

Abstract

Decreased water quality can be caused by fish losing their appetite, resulting in a buildup of food waste in the water. One of the additional ingredients that can be used is brackish snail (Faunus ater) flour. This research aims to determine the effect of adding brackish snail (Faunus ater) flour to feed on the growth of African catfish seeds and the appropriate dosage in feed that can increase the growth of African catfish seeds. The method used in this research was experimental with a Completely Randomized Design (CRD) consisting of 4 treatments and 3 replications. The treatments used were (P0) control, (P1) 10% brackish snail (Faunus ater) flour, (P2) 15% brackish snail (Faunus ater) flour, and (P3) 20% brackish snail (Faunus ater) flour. The test fish used were African catfish fry weighing 3-4 g and 5-7 cm long. The container used is waring with a density of 20 fish per pound. The amount of feed given is 5% of the biomass of African catfish seeds. The observation data were analyzed using Analysis of Variance (ANOVA) with the F test at a test interval of 5%, if there were significant differences, continue with Duncan's multiple range test. The results showed that the addition of 10% brackish snail (Faunus ater) flour gave significant results with the highest absolute length growth of 13.3±0.18 cm, the highest absolute weight growth of 36.2±0.18 g, the highest survival of 98.3±2.8%, the lowest feed conversion ratio was 1.1±0.0.
Agarolytic Bacillus sp. FRAgK1 Screened from Gracilaria (Rhodophyta) Thallus as Probiotic Candidate for Abalone Abdullah, Faisal Zain; Istiqomah, Indah; Isnansetyo, Alim; Yasa, Ngurah Sedana; Ismail, Norshida
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.93662

Abstract

Agarolytic bacteria produce agarase, which may aid in the growth of cultured tropical abalone fed natural seaweed. Agarolytic bacteria can come from a variety of sources, such as seawater, abalone intestines, and dead seaweed. This study aimed to isolate, screen, describe, and identify agarolytic bacteria found in red macroalgae. Agarolytic bacteria isolated from Gracilaria segregated from the substrate at Drini Beach, Gunungkidul Regency, were qualitatively described using the agarolytic index, antibiotic susceptibility, acid resistance (pH 4), and safety test. We collected seven agarolytic isolates. FRAgK1 isolate had the highest agarolytic index, was sensitive to antibiotics, resistant to low pH conditions, and non-pathogenic to finfish, making it suitable for use as gut probiotics in abalone. The bacterium was short rod-shaped, Gram-positive, non-motile, lacked catalase and indol, and was unable to ferment lactose or sucrose. The 16S rRNA gene sequence of FRAgK1 was most like Bacillus subtilis, however only by 99.43%.
Concervation Status of Caught Fish on the Coast Pangandaran, Pangandaran District, West Java Kamiswara, Rendika; Herawati, Titin; Nurhayati, Atikah; Yustiati, Ayi
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.94288

Abstract

Pangandaran has high potential in the tourism and fisheries sectors. Marine resources that are open access and can be used by anyone cause the sustainability of resources to be threatened due to over-exploitation. Traditional fishermen are one of the livelihoods owned by the majority of coastal communities, especially in the Pangandaran Coastal area. However, fishing activities have not been carried out wisely, and become a threat to the sustainability of sustainable marine biota. Small fishermen get by-catch in the form of protected marine life and are included in the IUCN Red List and the CITES Appendix list. This research was conducted to find out the species of marine biota with important conservation status or included in the status of the IUCN red list and the CITES Appendix list caught and traded in the coastal areas of Pangandaran Regency. The research was conducted using field observation method with purposive sampling technique in 2 locations; the east coast and the west coast of Pangandaran. There are 47 fish species found in all research sites with conservation status not evaluated (12.8%), least concern (83.0%), near threatened (2.1%), vulnerable (2.1%), and included in CITES Appendix II (2.1%).
Modulation of Gut Microbiota, Nutrient Transport Gene Expression, and Growth of Red Hybrid Tilapia (Oreochromis sp.) Fed with Black Soldier Fly (Hermetia illucens) by Oral Probiotics Latifah, Ma'rufa Nurul; Murti, Fauziah Arelia Usmiara; Helmiati, Senny; Ismail, Norshida; Syakuri, Hamdan; Istiqomah, Indah; Murwantoko, Murwantoko; Isnansetyo, Alim
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.95268

Abstract

Maggot Black Soldier Fly (BSF) is a nutritionally rich alternative food for fish. The slow digestibility requires the combination with other technologies to produce fish with excellent growth. This study aims to investigate the impact of probiotic application on the growth, microbiome, and gene expression in the intestines of tilapia-fed black soldier fly (BSF) larvae. Tilapia intestines were examined after two months of rearing with three replications and two treatments: A) 30% maggots and 70% commercial pellets with probiotics, and B) 30% maggots and 70% commercial pellets without probiotics. We discovered that probiotics have a significant impact on the gut microbiomes of fish and their absolute growth. The amplicon sequence variant in the probiotic treatment (A) was 25, with dominance by Cetobacterium, Acinetobacter, Enhydrobacter, and Gemmobacter, while the non-probiotic treatment (B) was 8, with dominance by Cetobacterium and Turicibacter. The probiotic treatment increased the expression of Ghrelin, Muc-2, IL-1β, and I-FABP genes, but not the CD36 gene. These findings suggest oral probiotics can help boost tilapia production when fed maggot black soldier fly (Hermetia illucens).
Food and Feeding Habits of Osteochilus vittatus Valenciennes, 1842 and Barbodes binotatus Valenciennes, 1842, in Tamblingan Lake, Bali Sathyananta, Kadek Prayuda; Pertami, Nyoman Dati; Parawangsa, I Nyoman Yoga; Surya Pramana, Made Arya
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.97116

Abstract

Tamblingan Lake is the smallest lake in Bali and is inhabited by various species of fish, which are from the Cyprinidae family, namely bonylip barb and spotted barb. Information regarding the food and feeding habits of bonylip barb and spotted barb fish in Tamblingan Lake is unavailable. This study aims to determine and analyze the food and feeding habits of bonylip barb and spotted barb fish in Tamblingan Lake. Fish sampling was conducted from January to June 2019 in Tamblingan Lake using modified gill nets with a net size of 0.5, 1.0, 1.5, 2.0, 2.5, and 3.0 cm. Fishing was carried out at five stations with water characteristics representing the condition of Tamblingan Lake. Bonylip barb fish obtained during the study comprised 216 individuals, while the Spotted barb had 180 individuals. The average value of the relative intestinal length of bonylip barb fish ranged from 4.34 to 5.53, while that of the spotted barb fish was 0.89 to 1.30. The average value of the gastric fullness index of film fish ranges from 1.34 to 4.77, while the spotted barb is 0.32 to 0.42. The total IRI value of bonylip barb fish food in Tamblingan Lake is 924.32, while the spotted barb is 1,232.62, with the highest IRI value in both species coming from plankton. Bonylip barb and spotted barb in Tamblingan Lake developed a generalist feeding strategy with plankton food groups (planktivorous). Information related to these fishes can be used to formulate fish resource management in Tamblingan Lake.

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