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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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PEMANFAATAN BAHAN ALAMI UNTUK MEMPERPANJANG UMUR SIMPAN IKAN KEMBUNG (Rastrelliger neglectus) Eko Susanto; Tri W. Agustini; Fronthea Swastawati; Titi Surti; Akhmad S. Fahmi; Mahmud F. Albar; Muhammad K. Nafis
Jurnal Perikanan Universitas Gadjah Mada Vol 13, No 2 (2011)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.3063

Abstract

Penelitian ini bertujuan memanfaatkan sosor bebek dan jahe merah sebagai bahan pengawet alami ikan serta mencari rasio terbaik ikan dan es pada penanganan ikan kembung. Penelitian ini memanfaatkan daun sosor bebek (Kalanchoe pinnata Lamk.Pers) dan jahe merah (Zingiber officinalle var. Amarum) sebagai pengawet alami pada ikan kembung (Rastrelliger neglectus) yang didinginkan dengan perbandingan ikan dan es yang berbeda. Perlakuan pada penelitian ini adalah perlakuan sosor bebek 20% dan jahe merah 9%. Ikan kembung disimpan dalam rasio ikan dan es yang berbeda (1:1 (kontrol), 1:1, 3:1, 5:1 (dengan perlakuan bahan alami) selama 12 hari. Parameter yang diamati adalah perubahan organoleptik, TPC, dan TVBN. Perlakuan terbaik dihasilkan dari perlakuan rasio ikan dan es 1:1. Kedua bahan alami dapat digunakan sebagai alternatif untuk memperpanjang shelf-life ikan kembung.
PENGARUH LEVEL KARBOHIDRAT DAN FREKUENSI PAKAN TERHADAP RASIO KONVERSI PAKAN DAN SINTASAN JUVENIL Litopenaeus vannamei Zainuddin Zainuddin; Haryati Haryati; Siti Aslamsyah; Surianti Surianti
Jurnal Perikanan Universitas Gadjah Mada Vol 16, No 1 (2014)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.9150

Abstract

This study aims to determine the level of carbohydrates and feeding frequency on feed convertion ratio and survival of shrimp vanamei juvenile. Research using completely randomized design by factorial patern with two factors and three replications. Treatments were factor A (carbohydrate levels, namely 18, 32, 40 and 50%), and factor B (frequency of feeding 2, 4 and 6 times per day). Shrimp vanamei which was used have an average weight of 0.3 g per individual. Feed dose was 10% of the body weight of shrimp with the feeding frequency adapted to the treatment. The results showed that the factor levels of carbohydrate feeding, feeding frequency and the combination of both give a signifi cant effect on feed convertion ratio of shrimp vanamei juvenile with the best combination of 50% carbohydrate level and feeding frequency 6 times per day. Treatment levels of carbohydrates, feeding frequency and combination of both give no signifi cant effect on survival of shrimp vanamei juvenile.
PERKEMBANGAN OVARI DAN OOSIT IKAN PATIN HASIL PERSILANGAN ANTARA BETINA PATIN JAMBAL (Pangasius djambal Bleeker) DENGAN JANTAN PATIN SIAM (Pangasianodon hypophthalmus Sauvage) Evi Tahapari; Bambang Iswanto
Jurnal Perikanan Universitas Gadjah Mada Vol 10, No 2 (2008)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.8884

Abstract

The aim of the study was to obtain the information of the gonadal development i.e ovary and oocyte of the hybrid between female patin jambal (Pangasius djambal) and male patin siam (Pangasianodon hypophthalmus). The gonadal development was investigated monthly by dissection of fish samples with 225.2-2,238.6 grams of body weight. Observations were carried out visual-macroscopically for shape, colour, and size of the ovaries. The visual-microscopically observations were carried out for both whole oocyte and ovarian histological slides. The results showed that the ovaries were very small, look alike short lobes. Its colour were grey-redish, very fatly, some of which were rudimentary, with gonadosomatic indices (GSI) ranged 0.05-0.92%. The most advanced stage of ovarian development was stage II (developing stage), later developed as regression ovary with major atresia, and never reached mature stage. The intraovarian oocytes developed as stage 1 (chromatin nucleolar and perinucleolar stages) with less than 225 μm in diameter and stage 2 (cortical alveolar and yolk vesicles stages) with 200- 875 µm in diameter, and the most advanced oocyte stage reached stage 2 only. There were no oocytes reached vitellogenesis stage (stage 3, yolk granules stage) neither mature oocyte stage (stage 4, migratory nucleus and hydrated oocyte stages), and showed major atresia, assigned by presence of the atretic oocyte stage (stage 5).
Parasit Anisakis sp. Pada Populasi Layur (Trichiurus sp.) yang Didaratkan di Pelabuhan Ikan Cilacap Suadi Suadi; Senny Helmiati; Retno Widaningroem
Jurnal Perikanan Universitas Gadjah Mada Vol 9, No 2 (2007)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.35

Abstract

The aims of this research were to determine the population parameters of hairtails (Trichiurus sp.) and the potential use of fish parasite (Anisakis sp.) for its stock assessment. Fishery survey was conducted at southern coast of Cilacap, Central Java on September to October 2004. Total length and weight of 527 fish samples were measured in five periods during the field survey and 30 samples were collected randomly for further observation to analyze the Anasakis sp., sex ratio, and gonad maturity. The average length of catched fish was ranged between 62  to 70 cm and weight was 200  to 250 g. The  length-weight (L-W) relationship indicated positive allometric growth (b=3.6076). Sex ratio was balance at 1:1 with gonad maturity range between I to IV for female and I to III for male. Anisakis sp. were found as endoparasite and potentially used as biological tags for fish stock assessment such as migration pattern and feeding habit.
PENGARUH PERBEDAAN AWAL PEMBERIAN ARTEMIA TERHADAP PERTUMBUHAN DAN SINTASAN PADA PEMELIHARAAN LARVA IKAN KLON (Amphiprion ocellaris) Ketut Maha Setiawati
Jurnal Perikanan Universitas Gadjah Mada Vol 10, No 1 (2008)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.8946

Abstract

The objective of this research was to find out the best time for nauplii artemia delivered in larva rearing of clown fish (A. ocellaris). Fiberglas tanks of 200 L were used as larva rearing container, and filled with 100 l filtered seawater. Eggs of clown fish were stocked at 100 individual in each tank. The treatment of different initial feeding time of nauplii artemia were set up as A) at Day 6, B) Day 10 and C) Day 15. The results showed that there were no significant differences among treatments to the growth rate but the survival rate at treatment A was the highest. Total length of the larvae were similar among treatment, namely A) 10.2±0.9 mm, B) 10.3±0.5 mm, and C) 9.9±0.8 mm. Survival rate was A) 81±11.3%, B) 62±0% and C) 67±5.7%, respectively.
ISOLASI DAN IDENTIFIKASI BAKTERI Aeromonas sp. DARI LELE DUMBO (Clarias sp.) DI KABUPATEN NGAWI Sri Rejeki; Triyanto Triyanto; Murwantoko Murwantoko
Jurnal Perikanan Universitas Gadjah Mada Vol 18, No 2 (2016)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.26917

Abstract

African catfish (Clarias sp.) is one of important freshwater fish which prefer consumed by people due to many advantages. Aeromonas sp. bacteria are dangerous patogen for freshwater fishes. This objective of the research was to isolate, identify and determine pathogenicity of Aeromonas sp. bacteria from African catfish from District Ngawi. The samples of catfish with 20 - 25 cm length showing clinical signs disease were obtained from three sub districts. Bacteria were isolated from kidney and inoculated into GSP medium. Characterization and identification through morphology of bacterial colonies, cells and biochemical test. Postulate Koch was conducted to verify abaility to couse disease. Pathogenicity was analyzed by determination of value of Lethal Dosage-50 on catfish on 7 - 9 cm length. The result showed that the disease symptoms of fish infected by the bacteria were skin ulcer, abdominal swelling and kidney damage. Fifteen bacterial isolates were collected which five, six and four isolates were from Kecamatan Karang Jati, Geneng dan Paron.sub-district respectively. The result showed 12 isolates (GKJ1, GKJ3, GKJ4, GGN1, GGN2, GGN3, GGN4, GGN5, GGN6, GPR2, GPR3 and GPR4) were identified as Aeromonas hydrophila. Three isolates (GKJ2, GKJ5 and GPR1) were identified as A. salmonicida. Isolate of A. hydrophila GKJ1, GKJ4, GGN2, GGN5, GPR2 and GPR4 were virulent to African catfish with LD50 values of 1,55 x 105, 3,89 x 105, 7,24 x 105, 2,39 x 105, 6,61 x 104 and 1,95 x 104 cfu/fish.
Antibacterial Activity of Jatropha curcas (Linn) Leaves Extract a gainst Vibrio harveyi and Aeromonas hydrophila Nasrullah Bai Arifin; Imas Marthapratama; Ellana Sanoesi; Arief Prajitno
Jurnal Perikanan Universitas Gadjah Mada Vol 19, No 1 (2017)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.10741

Abstract

The use of natural products as an antimicrobial agent is an alternative way in the treating drug-resistant pathogens. A. hydrophila and V. harveyi are pathogenic bacteria both in freshwater and marine culture, respectively. Physic nut (Jatropha curcas, Linn) has been known as an herbal plant that has an antibacterial agent. The purpose of this study was to analyze inhibition ability of an extract of physic nut leaves on the growth of V. harveyi and A. hydrophila. In this study, water extract of physic nut leaves was determined to evaluate the antibacterial activity against V. harveyi and A. hydrophila using the Minimum Inhibitory Concentration Test (MIC) and Paper Disk Diffusion Method. The smallest concentration on the MIC was 0.10 g/ml for A. hydrophila and 0.15 g/ml for V. harveyi, respectively. The Paper Disk Diffusion Method used difference concentrations (0.10 g/ml; 0.15 g/ml; 0.20 g/ml; 0.25 g/ml; 0.30 g/ml; 0.35 g/ml; dan 0.40 g/ml) and Control (0 g/ml). The concentration of 0.35 g/ml had the highest inhibition zone diameter in 11.3±0.2 mm for A. hydrophila and 0.40 g/ml had the highest inhibition zone in 11.2±0.3 mm for V. harveyi. The result showed that water extract of physic nut leaves was able to inhibit both tested bacteria.
SEBARAN LOKASI PENELURAN PENYU HIJAU (Chelonia mydas) DI PULAU SANGALAKI KEPULAUAN DERAWAN KABUPATEN BERAU Andi Ibrahim; Djumanto Djumanto; Namastra Probosunu
Jurnal Perikanan Universitas Gadjah Mada Vol 18, No 2 (2016)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.26214

Abstract

Populasi penyu hijau (Chelonia mydas) yang bertelur di kawasan konservasi kepulauan Derawan semakin menurun disebabkan oleh berbagai faktor. Penelitian ini bertujuan untuk mengetahui jumlah peneluran tiap induk penyu hijau dan korelasinya terhadap naungan, lebar pantai berpasir dan fase bulan. Penelitian ini dilakukan pada tanggal 24 Januari–31 Maret 2015 berlokasi di Pulau Sangalaki. Pengamatan induk bertelur dilakukan dengan menyusur pantai tiap malam untuk menemukan induk yang sedang bertelur. Pada induk yang sudah bertelur, maka sarangnya diberi tanda di lokasi tempat bertelur. Pada hari berikutnya dilakukan penggalian sarang, pengambilan telur, dan pengukuran kondisi lingkungan tempat peneluran. Data yang dikumpulkan adalah jumlah telur tiap sarang dan kondisi lingkungan tempat peneluran. Kondisi lingkungan yang diukur meliputi kedalaman sarang, suhu substrat, jarak sarang terhadap naungan dan garis pantai saat surut terendah. Analisis data dilakukan secara deskriptif terhadap jumlah telur dan parameter lingkungan. Hasil penelitian menunjukkan rerata jumlah telur tiap sarang sebanyak 97 butir dengan kisaran 45–127 butir, ukuran panjang karapas 96 cm dengan kisaran 86-107 cm, rerata kedalaman sarang 73 cm dengan kisaran 56-87 cm. Penyu yang bertelur semakin banyak akan menggali sarang semakin dalam, namun tidak ada korelasi antara panjang karapas dengan jumlah telur. Jumlah rerata induk penyu hijau yang bertelur di Pulau Sangalaki adalah 486 ekor/bulan dengan kisaran 168–1085 ekor/bulan. Musim barat dan timur mempengaruhi frekuensi peneluran. Frekuensi peneluran terjadi sepanjang tahun dan frekuensi peneluran paling tinggi terjadi pada bulan Agustus yang bertepatan dengan puncak musim Timur. Frekuensi peneluran pada musim Timur empat kali lebih banyak daripada saat musim Barat. Frekuensi pendaratan penyu hijau tidak dipengaruhi oleh fase bulan. Berdasarkan lokasi penyu hijau bertelur, pantai yang banyak dipilih untuk lokasi bertelur terdapat di sebelah barat laut, timur laut dan selatan Pulau Sangalaki. Sarang penyu hijau lebih banyak ditemukan pada daerah naungan vegetasi (64%) daripada daerah pasir terbuka (36%).
Rehabilitation of Mangrove Ecosystem Through Community-Based Project and the Current Economic Value: A Case Study of Rehabilitation Project in Lubuk Kertang Village, Langkat Regency, North Sumatera Natasha Dinda; Suadi Suadi; Latif Sahubawa
Jurnal Perikanan Universitas Gadjah Mada Vol 20, No 2 (2018)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1502.173 KB) | DOI: 10.22146/jfs.34067

Abstract

Mangrove ecosystem plays an important role for socio-economic and environmental services. However, the rapid expansion of agricultural and industrial plantation activities challenged the sustainability of such ecosystem in Lubuk Kertang Village. This research aims to describe the potential of community-based to rehabilitate the degraded mangrove ecosystem and the economic benefit of such project for Lubuk Kertang villagers. The research was conducted using census methods for all respondents, including fishermen, handicraft makers, tourists, and the manager of the eco-tourism activity. The study showed that the successful of community on replanting the mangrove on mangrove ecosystem led by various factors, including the high willingness of community to participate on rehabilitation project, clear physical boundaries and rule enforcement, effective monitoring system and better conflict resolution mechanism. The total economic value in the mangrove area is Rp 1.057.343.654/year, comprising of Rp 601.077.437/year direct use value, Rp 395.786.267/year indirect value, Rp 22.279.950/year option use value, and Rp 38.200.000 existence value. The society based mangrove management has preserved the benefit potential value of not to endanger the change of mangrove ecosystem.
Preferences of Giant Gouramy (Osphronemus gouramy, Lac, 1801.), Walking Catfish (Clarias sp.) and Red Nile (Oreochromis sp.) on Natural Feed in Fish Culture Dea Nafila; Rustadi Rustadi; Djumanto Djumanto
Jurnal Perikanan Universitas Gadjah Mada Vol 20, No 2 (2018)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (671.262 KB) | DOI: 10.22146/jfs.34494

Abstract

The aim of this study was to determine the preference for plankton as natural feed by giant gourami, walking catfish, and red nile on intensive aquaculture system. The study was designed using Completely Randomized Design (RAL), with two replications. Each fish was kept in six concrete tanks with dimension 2x2x1 m³ and 60 cm water level. Water source were from wells. Commercial pellet feed was given in three times daily ad libitum. Water samples were filtered and two individual fish were collected for plankton samples from pond water and alimentary canal, respectively, every two week, simultaneously with water quality measurements. Plankton samples were preserved using 5% formaldehyde and was observed under a compound light microscope with 100x magnification. The amount of plankton in the alimentary canal was converted to volume. Data were analyzed descriptively. The result showed that the volume contents proportion of plankton in the alimentary canal was less than 1%. The volume of plankton proportion in the alimentary canal of red nile were found the most than other fish. Each fish had the same preference of plankton of Lepocinclis and Scenedesmus, but different from other species of plankton. The plankton that utilized by giant gouramy were Crucigenia, Diadesmis and Navicula, whereas walking catfish was Pediastrum, and red nile was Microcystis. The plankton that preferred by giant gouramy were Crucigenia, Oscillatoria, Splirullina, and Synedra, walking catfish was Navicula, while red nile were Chrysamoeba and Tintinnidium.

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