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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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MAKANAN DAN KEBIASAAN MAKAN IKAN GEROT Pomadasys kaakan (CUVIER & VALENCIENNES,1830) DI TELUK PABEAN JAWA BARAT Chilmia Ayu Annisa; M Fadjar Raharjo; Ahmad Zahid; Charles P.H Simanjuntak; Aries Asriansyah; Reiza M Aditriawan
Jurnal Perikanan Universitas Gadjah Mada Vol 20, No 1 (2018)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.31498

Abstract

The Pabean Bay is an estuary area that inhabited by many fish species such as javelin grunt (Pomadasys kaakan Cuvier, 1830). The purposes of this study were to identify food item and determine the feeding habit of the javelin grunt in The Pabean Bay, West Java. Fishes were collected monthly from June to December 2016 using gill nets and trap nets. Observation food is in vitro by conducting an examination of the stomach and the intestines of an example and refer on the books of the identification by Carpenter and Niem. Analysis of fish diet includes index of relative importance, niche breadth, and niche overlap. Fishes were grouped into three groups based on the size length. The result showed that the javelin grunt was crustacivore. Generally, the diet of javelin grunt consists of Acetes sp., Penaeus sp., Portunus sp., Clupeid, Ambassid, Sciaenid, Gobiid, Sillaginid, and unidentified organisms. Penaeus sp. was the main food and could be found on each size of group in monthly observation. The proportion of index of relative importance value was changed in regard of length size groups of A (41-85 mm: 12.105), B (86-130 mm: 13.804), and C (131-175 mm: 7.561). The niche breadth of javelin fish was higher in the larger ones and a high diet overlap among size groups was found. According to prey item and feeding habit, the javelin grunt can be classified as benthic crustacean feeder.
HUBUNGAN PERKEMBANGAN MORFOLOGI DENGAN ORGAN PENCERNAAN LARVA KERAPU BEBEK (Cromileptes altivelis) TURUNAN KE-3 (F-3) Wawan Andriyanto; Muhammad Marzuqi
Jurnal Perikanan Universitas Gadjah Mada Vol 14, No 1 (2012)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.9052

Abstract

Pengamatan perkembangan morfologi dan perkembangan saluran pencernaan larva ikan kerapu bebek F3 hasil pembenihan induk generasi F2 telah dilakukan melalui serangkaian pemeliharaan dari umur 1 HSM (hari setelah menetas) sampai dengan 40 HSM. Sampel larva diambil setiap hari dari 1 HSM sampai dengan 10 HSM dan dilanjutkan interval 3 hari sampai umur 40 HSM. Pakan alami diberikan sesuai dengan SOP perbenihan kerapu. Sampel dianalisa secara histologi dan morfologi dengan piranti lunak yang mendukung. Fase yolk sac sampai dengan pre fl exionsecara pertumbuhan tidak signifi kan, namun perkembangan morfologi dan differensiasi saluran pencernaan berkembang sangat pesat. Pada fase ini organ pencernaan larva sudah terbagi dari mulut, esophagus, perut, usus dananus namun belum sempurna. Pada fase akhir pre fl exion (13 HSM) pertumbuhan larva menunjukkan grafi k eksponensial (tumbuh cepat). Notochord terbentuk pada fase fl exion (18-20 HSM), sementara organ pencernaan terutama perut dan usus mulai berkembang. Perkembangan morfologi stadia larva kerapu bebek turunan ke-3 (F3) dari fase yolk sac sampai dengan juvenil memerlukan waktu sekitar 28 sampai dengan 31 HSM. Proporsi duri sirip punggung pada stadia prefl exion sampai dengan postfl exion memiliki panjang yang cenderung lebih tinggi dibanding kerapu yang lain yaitu 76%. Rata rata pertumbuhan panjang larva kerapu dari stadia yolk sac sampai dengan juvenil dicapai sebesar 0.41% dengan total panjang larva pada stadia juvenil adalah sekitar 18.42 ± 3.23 mmTL. Nilai standar deviasi yang tinggi memperlihatkan variasi ukuran pada akhir stadia. Larva kerapu bebek turunan ke-3 mulai memanfaatkan makanan dari luar sekitar umur 4 HSM dan saluran pencernaan mulai berfungsi optimal pada umur 28–31 HSM.
Patogenisitas Vibrio Fluvialis 24SK terhadap Kerapu Tikus (Cromileptes altivelis) Indah Istiqomah; Alim Isnansetyo; Triyanto Triyanto; Kamiso Handoyo Nitimulyo; Muhammad Murdjani
Jurnal Perikanan Universitas Gadjah Mada Vol 8, No 1 (2006)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.159

Abstract

This research was aimed to investigate the pathogenicity of Vibrio fluvialis 24SK in humpback grouper (Cromileptes altivelis) based on its Lethal Dosage 50 (LD50). V. fluvialis 24SK was isolated from ren of humpback grouper cultured in floating net cage at Brackishwater Aquaculture Development Center (BADC) Situbondo, with vibriosis signs. The bacterium was cultured in Tryptone Soy Broth (TSB) medium dissolved in trisalt solution (KCl, 0.75 g/l; MgSO4.7H2O; 14.2 g/l; NaCl, 18.4 g/l), incubated at 300C for 24 h. Infection was carried out by interperitoneal injection to humpback grouper (8-9 cm of total length) at 102, 104, 106, and 108 cfu/fish. Control fishes were injected with 0.2 ml trisalt solution. Disease sign and mortality of fishes were observed every eight hour for 40 days. LD50 was calculated based on Dragstedt Behrens method (Hubert, 1980). Result indicated that infection of the bacteria at 106 and 108 cfu/fish caused sub-acute disease signs, such as haemorhagic on operculum, base of fins (pinnae pectorales, pinnae abdominales, pinna analis), and also head and abdomen, while infection at 102 and 104 cfu/fish caused chronic disease signs, such as haemorhagic on fins base which was followed by necrotic on fins and skin tissue in prolonged time. Histopathologically, infection of the bacteria caused atrophy on the gills, infiltrations of lymphocyte, heterofel and plasma cell on the gills and fins base, vacuolar degeneration on the liver, and also present the bacteria colony on the fins base and intestine tissues. V. fluvialis 24SK has LD50 at (1,1±0,5)x107 cfu/fish.
HUBUNGAN ANTARA KELIMPAHAN KISTA DINOPHYCEAE DENGAN PARAMETER FISIKAKIMIA PERAIRAN DI TELUK JAKARTA Yuliana Yuliana
Jurnal Perikanan Universitas Gadjah Mada Vol 16, No 2 (2014)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.9111

Abstract

Phytoplankton mainly Dinofl agellata group on sexual reproductive phase will form a cyst when water conditions worsened. Cyst that was in the column will settle to the bottom, forming sediments that abundance is closely related to the events that occurred at an earlier time. This study aims to examine the relationship between abundance of Dinophyceae cysts with physico-chemical parameters of waters in the Jakarta Bay. Research conducted in the Jakarta Bay in August 2009, September 2009, November 2009, January 2010, March 2010 and May 2010 with the number of the location of sediment sampling are 9 stations. Sediment sample were taken using a corer which the pipe made of elliptical. Sample handling is done by the separation between the sediments and cysts which is covering the sifting process, then performed panning. The water samples that has been separated by sediment stored in sample bottles and preserved by using formalin 4%, then identifi ed using a microscope. The results showed that the physico-chemical parameters of waters were the temperature: 25,00-31,80oC, salinity: 28.00 to 33.00, current: 9.81 to 30.51 cm.det-1, acidity : 6.58 to 8.63, brightness: 1.25 to 4.50 m, depth: 4.00 to 7.00 m, nitrates: 0.0072 to 0.0982 mg.l-1, and orthophosphate: 0, 0114 to 0.4076 mg.l-1. Dinophyceae cyst abundance during the study ranged from 51-8081 kista.cm-3. Meanwhile, the composition of the types of cysts Dinophyceae consists of 8 (eight) genus. The results of Pearson’s correlation analysis showed that the current value of Pearson’s correlation was 0.233 provides the most profound and positive correlation to the presence of cysts Dinophyceae during the study.
VIBRIOSIS PADA IKAN DAN ALTERNATIF CARA PENANGGULANGANNYA Kamiso H. N.
Jurnal Perikanan Universitas Gadjah Mada Vol 1, No 1 (1996)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.8859

Abstract

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KARAKTERISTIK PERTUMBUHAN Tetraselmis sp. DAN Nannochloropsis sp. Muhammad Fakhri; Nasrullah B. Arifin
Jurnal Perikanan Universitas Gadjah Mada Vol 18, No 1 (2016)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.10749

Abstract

Pemantauan pertumbuhan mikroalga (Tetraselmis sp. dan Nannochloropsis sp.) merupakan salah satu faktor penting dalam budidaya ikan dan udang. Tujuan penelitian ini adalah untuk mengetahui karakteristik pertumbuhan Tetraselmis sp. dan Nannochloropsis sp. dengan mengukur kerapatan optik menggunakan metode spektrofotometri. Penyerapan 600 nm digunakan untuk kedua spesies. Hasil penelitian menunjukkan bahwa pertumbuhan maksimum dicapai pada hari ke 6 untuk kedua mikroalga dengan nilai OD masing-masing 1,734 ± 0,013 dan 1,329 ± 0,002 untuk Tetraselmis sp. dan Nannochloropsis sp.. Tetraselmis sp. memiliki tingkat pertumbuhan maksimum 0,74/hari dan waktu penggandaan 22,43 jam sedangkan Nannochloropsis sp. memiliki tingkat pertumbuhan maksimum 0,86/hari dan waktu penggandaan 19,25 jam. Penelitian ini menunjukkan bahwa absorbansi 600 nm cocok untuk mengetahui pertumbuhan mikroalga hijau dan metode spektrofotometri yang dapat digunakan secara efisien untuk memantau pertumbuhan mikroalga. 
PERTUMBUHAN PHORPHYRIDIUM PADA BERBAGAI SALINITAS Fifi Widjaja; Dedi Soedharma; Agus Saptono
Jurnal Perikanan Universitas Gadjah Mada Vol 8, No 1 (2006)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.9029

Abstract

A study on the growth of Phorphyridium cruentum and P. aerugineum was conducted under laboratory condition. Objective of this study was to find out the optimum growth of Phorphyridium under various salinities. Culture medium used in this research was Guillard F/2 in 2.2 l of culture bottles with continuous lighting. Results show that the optimum salinity for growth of P. aerugineum and P. cruentum were 5 and 24 ppt, respectively.
PENGARUH PARAMETER FISIKA DAN KIMIA TERHADAP KEHADIRAN IKAN LOMPA (Thryssa baelama Forsskål) DI PERAIRAN PANTAI APUI KABUPATEN MALUKU TENGAH Meillisa Carlen Mainassy
Jurnal Perikanan Universitas Gadjah Mada Vol 19, No 2 (2017)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.28346

Abstract

Maluku is one of the archipelago province in Indonesia that has small pelagic fish resources with widespread distribution, such as lompa (Thryssa baelama Forsskål). One of lompa habitat in Mollucas is in Apui coastal areas. The presence of lompa depends on physical and chemical parameters in the waters. This study aims to determine the influence of physical and chemical parameters on the presence of lompa in Apui coastal area Central Mollucas. This study was conducted in June - July 2015. This research is ex-post facto using the value of Environmental Water Quality Index which refers to US-National Sanitation Foundation-Water Quality Index (NSF-WQI). Physical and chemical parameters measured include temperature, velocity, depth, brightness, salinity, pH and dissolved oxygen. The results of calculations with the Indeks Mutu Lingkungan Perairan (IMLP) are 95.61; 92,15; 88.61; 96,37; 93,76; 79.57. And the results of lompa fishing were 181, 162, 205, 173, 184, and 97 respectively. The research conclusion is that the Apui coastal areas are in good condition and potential as lompa habitat.
Distribusi Plankton di Waduk Kedungombo Krismono Krismono; Yayuk Sugianti
Jurnal Perikanan Universitas Gadjah Mada Vol 9, No 1 (2007)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.69

Abstract

The aim of this research was to know plankton distribution in Kedungombo reservoir. The research was conducted at three inlet station, (1) inlet from Kemukus mountain, (2) inlet from Kemusuk and (3) inlet from DAM in transition season (May and September, 2002), rainy season (November, 2002) and dry season (July, 2002). The result showed that the abundance of plankton organism was the highest at July (dry season) when the N:P ratio was highest.
Keragaman Jenis dan Distribusi Ukuran Panjang Ikan Terbang di Perairan Indonesia Timur Augy Syahailatua; Asikin Djamali; Petrus Makatipu; Syamsu A. Ali
Jurnal Perikanan Universitas Gadjah Mada Vol 8, No 2 (2006)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.149

Abstract

Research on flyingfishes in 2004 was aimed to know their species diversity and length distribution. Two locations were selected as sampling sites such as Flores Sea and Sulawesi Sea. Samples were collected in Takalar from May to July 2004 represented samples from Flores Sea, and in Manado and Tahuna in November 2004 represented samples from Sulawesi Sea. All samples were caught by local fishermen who operated a gillnet. There were 7 species identified from Flores Sea, i.e. Cheilopogon abei, Cheilopogon spilonopterus, Cheilopogon spilopterus, Cheilopogon suttoni, Cypselurus poecilopterus, Hirundichthys oxycephalus and Parexocoetus mento, whereas from Sulawesi Sea, Cheilopogon cyanopterus and Cheilopogon spilopterus were identified. The average total length of C. spilopterus collected in May-July 2004 was longer than 200 mm and were no variation amongst months, while Cheilopogon spp. sampled from Sulawesi Sea was longer than 250 mm. The flyingfish samples were mostly in adult stage and had spawned.

Page 12 of 46 | Total Record : 460

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