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Jurnal Perikanan Universitas Gadjah Mada

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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.

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Articles 21 Documents

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Search results for , issue "Vol 9, No 2 (2007)" : 21 Documents clear

Sebaran Dan Kepadatan Kima (Tridacnidae) di Perairan Kepulauan Derawan, Kalimantan Timur Hendrik Alexander William Cappenberg
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.34

The purpose of this research was to know the distribution and density of clams (Tridacnidae) in Derawan Islands. The research was conducted in three islands of Derawan Islands, Berau District, East Kalimantan, namely Maratua, Panjang and Raburabu Islands. RRI (Rapied reef Resources Inventory) method was applied in September 2004. There were 414 individuals, belonging to four species, namely Tridacna crocea, T. derasa, T. maxima and T. squamosa. The highest density was found in Tridacna crocea (0.193 ind/1000m²) and the lowest density was T. squamosa (0.002 ind/1000m²) in Maratua Island.

Pengaruh Vitamin C Terhadap Perkembangan Gonad Induk Udang Galah (Macrobrachium rosenbergii) Wahyu Pamungkas; Ikhsan Khasani; Raden Roro Sri Puji Sinarmi Dewi
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.30

The objective of the experiment was to know the effect of vitamin C on gonadal development of giant freshwater prawn (Macrobrachium rosenbergii) broodstock. Female broodstock of 30-60 g and male broodstock of 40-70 g average body weight were used in this experiment. The broodstock were fed with different dose of vitamin C in feed as 0; 0.05; 0.10; and 0.15% at 3-4% of biomass weight per day for 3 months. Gonado Somatic Index (GSI) value obtained from the diet with 0.15% of vitamin C was significantly different from others (P0.05). The supplementation of vitamin C in the diet of giant freshwater prawn broodstock is important for gonadal development.

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

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.

An Experimental Fishing Operation of Collapsible Trap for Capture of Coral Fish Barbara Grace Hutubessy; Jacobus Wilson Mosse
Jurnal Perikanan Universitas Gadjah Mada Vol 9, No 2 (2007)
Publisher : Universitas Gadjah Mada

The aim of this research was to know the effectiveness of the trap which was modified and redesigned from its original. The research was conducted in the water of Baa, Rotendao district, East Nusa Tenggara Province. The trap was operated for 3 months started from August to November 2004 by using three types of baits. Fishes were collected from the trap every 2-3 days immersion by pulling up the trap on board. There were 69 individuals fishes in one trap representing 11 families and 15 species. Most fish species were highly economic values and was dominated by snappers (Lutjanidae) and groupers (Serranidae). The fish size were ranging from 17 to 29 cm of tolat lenght (TL). There was no significant difference between bait used on the catch (p>0.05) suggesting that bait may not be required anymore on this specific reef fishing methods. It is realized that further studies may be required, however in the mean time, this gear may provide an alternative method for small scale reef fishing.

Kadar Fosfat, Nitrat dan Silikat di Teluk Jakarta Marojahan Simanjuntak
Jurnal Perikanan Universitas Gadjah Mada Vol 9, No 2 (2007)
Publisher : Universitas Gadjah Mada

The aim of this study was to find out the distribution pattern of phosphate, nitrate and silicate in the Jakarta Bay. The research were carried out in May and October 2004. Water samples were collected from 30 stations at surface and buttom layers using Nansen Bottle Sampler. Samples were analyzed using spectofotometer for phosphate, nitrate and silicate concentrations. The results showed that in May 2004, concentration of phosphate (0.03-0.05 ppm) and nitrate 90.05-0.29 ppm) were the highest in the western area, while in the central part, phosphate (0.002-0.07 ppm) and nitrate (0.05-0.29 ppm) were the lowest, respectively. In contrast to silicate, the highest was (0.61-2.93 ppm) found in the eastern part and the lowest (0.43-1.05 ppm) occurred in the western part. In October 2004, the highest concentration for phosphate (0.01-0.11 ppm) was found in eastern part, nintrate (0.03-0.19 ppm) and silicate (0.34-3.54 ppm) were found in central part, respectively. While the lowest for phosphate (0.007-0.06 ppm) occurred in central part, nitrate (0.015-0.15 ppm) in western part and silicate (0.31-1.77 ppm) in eastern part, respectively. It was suggested to manage water discharge into the Bay to reduce eutrophication.

Fluktuasi dan Kelimpahan Fitoplankton di Danau Laguna Ternate Maluku Utara Yuliana Yuliana; Thamrin Thamrin
Jurnal Perikanan Universitas Gadjah Mada Vol 9, No 2 (2007)
Publisher : Universitas Gadjah Mada

The objective of this research was to know the fluctuation and abundance of phytoplankton at Laguna Lake, North Moluccas. This research was conducted for 3 periods, from June to July 2005. Sampling of plankton were taken biweekly in 4 stations and 3 depths (0, 5, and 10 m) by filtration method.The results showed that there were 9 genera from 3 classes: Bacillariophyceae (6 genera), Cyanophyceae (2 genera), and Dinophyceae (1 genera). Plankton abundance on period I ranged 1.14 x 104-3.49 x 104 ind/l, period II ranged 7.64 x 103 -4.73 x 104 ind/l, and period III ranged 9.29 x 103-3.78 x 104 ind/l, the highest on period II (3.19 x 105 ind/l) and the lowest on period I (2.49 x 105 ind/l). The phytoplankton abundance in each station were station 1 = 9.29 x 103-4.73 x 104 ind/l, station 2 = 1.51 x 104-4.52 x 104 ind/l, station 3 = 7.64 x 103-3.45 x 104 ind/l, and station 4 = 1.14 x 104-3.49 x 104 ind/l. The highest phytoplankton abundance was in station 2 (2.45 x 105 ind/l) and the lowest in station 4 (1.68 x 105 ind/l). Whereas, phytoplankton abundance based on depth were 0 m = 9,29 x 103-3,92 x 104 ind/l, 5 m = 7,64 x 103-4,73 x 104 ind/l, and 10 m = 1,18x 105-3,7 x 105 ind/l, the highest on 10 m (2.91 x 105 ind/l) and the lowest on 0 m (2.49 x105 ind/l). The range value of biological index such as diversity index (H’) on period I was 0,5276-1,1853, period II was 0,6138-1,1635, and persiod III was 0.6276-1.2264; equitability index (E) on period I was 0.4422-0.8550, period II was 0.4725-0.8393, and period III was 0.5674-0.8575; and dominant index (D) on period I was 0.3403-0.7032, period II was 0.3584-0.6597, and period III was 0.3195-0.6647.

Pertumbuhan Populasi Kopepoda Harpacticoid, Tigriopus sp. dengan Jenis Pakan Mikroalga yang Berbeda Sutomo Sutomo
Jurnal Perikanan Universitas Gadjah Mada Vol 9, No 2 (2007)
Publisher : Universitas Gadjah Mada

The objective of this research was to know the effect of different microalgae diets on the population growth of copepod, Tigriopus sp. The experiment was conducted in 60 ml plastic petridish. One individual of eggs-carrying female copepod were reared in each petri, fed different microalgae diets (Tetraselmis sp., Isochrysis galbana strain T.iso, Chaetoceros gracilis, Nannochloropsis oculata, Thalassiosira sp. and I. galbana) as treatments in 4 replicates. Observations were carried out to count the number of individual copepod, under binocular microscope. The result of one way analysis of variance showed that there were significantly different among the treatments on the population growth of the copepod (P

Persentase Post Larva Udang Galah (Macrobrachium rosenbergii) Dengan Pemberian L-Ascorbyl-2-Monophosphate-Magnesium Dalam Air Raden Roro Sri Pudji Sinarni Dewi; Bambang Iswanto
Jurnal Perikanan Universitas Gadjah Mada Vol 9, No 2 (2007)
Publisher : Universitas Gadjah Mada

The aim of this study was to improve the production homogeneity of freshwater prawn post larva by the addition of L-ascorbyl-2-monophosphate-Mg (AMP-Mg) in the water during rearing period. AMP-Mg was given to the water every three days with different concentrations of 0; 0.5; 1.0; and 1.5 mg/l. The density of larvae was 50 larvae/l. Larvae were fed Artemia and egg custard during rearing period. The results showed that AMP-Mg did not significantly influence larval metamorphose rate, post larvae percentage, and survival rate of prawn. However, AMP-Mg addition could improve homogeneity of post larvae production. The optimum AMP-Mg concentration was 0.5 mg/l.

Respon Osmolaritas Udang Windu Penaeus monodon Fab. dalam Media Terkontaminasi Fenol Haeruddin Haeruddin; Diana Rachmawati
Jurnal Perikanan Universitas Gadjah Mada Vol 9, No 2 (2007)
Publisher : Universitas Gadjah Mada

Phenol represents nerve poison which able to cause paralysis due to the damage on fat tissue of nerve. In crustacean like tiger prawn, the damage on nervous system disturbs molting and osmoregulation activity, because both of those activities related to neuroendocrine system under control of center nervous system. This research was done to : (1) study the effect of various phenol concentration in culture medium to hemolymph osmolarity and osmotic work level of tiger prawn, (2) determine Low Observable Effect Concentration (LOEC) and No Observable Effect Concentration (NOEC) of phenol to hemolymph osmolarity and osmotic work level of the tiger prawn.The results showed that phenol has a significant effect on decreasing hemolymph osmolarity and increasing osmotic work level of tiger prawn. Osmolarity and osmotic work level respon pattern of the prawn to various phenol concentration is linear regression equation. NOEC and LOEC to the hemolymph osmolarity and the osmotic work level of the prawn are 0 to 2.08 mg/l and 2.08 mg/l, respectively.

Jenis dan Sebaran Uca spp. (Crustacea: Decapoda: Ocypodidae) di Daerah Mangrove Delta Mahakam, Kalimantan Timur Rianta Pratiwi
Jurnal Perikanan Universitas Gadjah Mada Vol 9, No 2 (2007)
Publisher : Universitas Gadjah Mada

Studies on the species and distribution of Uca spp. in mangrove area of Mahakam Delta, East Kalimantan was conducted in July 2004. The aims of this study were to know distribution and characteristics of Uca spp. as permanent and dominant species in the mangrove area. Sampling method used in this study was quadrat transect. Results indicated that the highest density of species was Uca (Deltuca) dussumieri dussumieri with density of 912 and 656 individu/m² in Muara Bayor and Muara Beji, respectively. Uca (Australuca) bellator minima and Uca (Deltuca) arcuata both in Muara Bayor had the lowest density at 11 and 12 individu/m², respectively. Those crabs were clump distributed in their live.

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