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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 460 Documents

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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.

Penilaian Kualitas Air Berdasarkan Sistem Saprobik di Sungai Ciapus Majariana Krisanti; Niken T.M. Pratiwi
Jurnal Perikanan Universitas Gadjah Mada Vol 9, No 2 (2007)
Publisher : Universitas Gadjah Mada

Changes of environment could also changes the organisms, as individual, population, or community therefore the appearance of an organism could be applied as biological indicator of those environments. Simple methods were introduced in England, Australia, Thailand, and Indonesia. The objective of this study was to evaluate water quality of Ciapus river using simple kit based on saprobic system. An Illustrated cover and inserted paper were used as kit to evaluate the river water quality. Using this kit, the appearance of specific organisms were used as key to evaluate the river water quality of Ciapus River directly. Samples were taken from two segment of Ciapus River i.e. upper and middle part. According to the method, the upper segment of Ciapus River was categorized as very good condition, while the middle part was in moderate condition.

Variasi Genetik Ikan Hias Clown, Amphiprion ocellaris Sari Budi Moria; Ida Komang Wardana; Gusti Ngurah Permana; Ahmad Muzaki; Ketut Maha Setiawati
Jurnal Perikanan Universitas Gadjah Mada Vol 9, No 1 (2007)
Publisher : Universitas Gadjah Mada

Evaluation of genetic variation of wild clown fish, Amphiprion ocellaris was conducted to collect basic knowledge in order to develop sustainable ornamental fish breeding under controled condition. Clown fish samples were collected from three locations, i.e. Bali, Madura, and South Sulawesi waters. PCR amplification of mt-DNA by using universal primer obtained single band with molecule weight of 461 bp. RFLP of mt-DNA with Hinf I, Mbo I and Nla III restriction enzymes showed that the highest genetic variation as 0.581 was found from South Sulawesi population and the lowest as 0.382 from Bali, while Madura population has genetic variation of 0.456. Genetic distance of clown fish from South Sulawesi and Madura was closer (0.107) comparing to clown fish from Bali population (0.270).

Konsentrasi Unsur Hara pada Media dan Pertumbuhan Chlorella Vulgaris dengan Pupuk Anorganik Teknis dan Analis Sri Amini; Syamdidi Syamdidi
Jurnal Perikanan Universitas Gadjah Mada Vol 8, No 2 (2006)
Publisher : Universitas Gadjah Mada

Research on the effect of technical and proanalyze fertilizers on the growth of Chlorella vulgaris was conducted in triplicates using a culture bottle containing 3 l of sea water at 30 ppt. The culture media were inoculated with Chlorella vulgaris at 104 cells/ml of initial density, lighted at 2000 lux, and incubated at 26°C. Results showed that the highest growth rate of C. vulgaris was obtained in medium added with anorganic proanalyze fertilizer with maximum density of 2.62 x 107 cells/ml at 9 days culture. Ammonia, sulphide, nitrate, nitrite, phosphate, iron, cuper, and cadmium contents were not exceed the maximum limit at the 13-day of culture.

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