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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 6 Documents
 1 
Search results for , issue "Vol 12, No 1 (2010)" : 6 Documents clear
KANDUNGAN DAN KOMPOSISI PIGMEN Sargassum sp. PADA PERAIRAN TELUK AWUR, JEPARA DENGAN PERLAKUAN SEGAR DAN KERING Dian Resita; Windu Merdekawati; AB Susanto; Leenawaty Limantara
Jurnal Perikanan Universitas Gadjah Mada Vol 12, No 1 (2010)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.2897

Abstract

Sargassum sp. is one of seaweed species that abundance and widespread in Indonesia. Besides alginates, Sargassum sp. also contains photosynthesis pigment i.e. chlorophyll a and c, carotene, and fucoxanthin. To date, Sargassum sp. is only used in the form of alginates colloid for industrial raw material with drying process prior to production. Dried process of Sargassum sp. cause pigment degradation especially chlorophyll. The aim of this research was to determine the content and pigment composition of fresh and dried Sargassum sp. Pigment identifi  cation was conducted by Thin Layer Chromatography (TLC), Spectrophotometer and High Performance Liquid Chromatography (HPLC). The contents were analyzed by HPLC. Results showed that Sargassum sp. contain pigment fucoxanthin range from 21.80 to 73.10%, chlorophyll a range from 0.73 to 54.96%, chlorophyll c range from 0.28 to 1.09% and carotene 0.38%. The research results showed that fresh and dry Sargassum sp. contain same pigment composition that were as carotene, pheophytin a, chlorophyll a, chlorophyll c and fucoxanthin.
BUDIDAYA UDANG WINDU, Penaeus monodon PADA TAMBAK TANAH SULFAT MASAM DI TARAKAN, KALIMANTAN TIMUR Brata Pantjara; Markus Mangampa; Rachman Syah
Jurnal Perikanan Universitas Gadjah Mada Vol 12, No 1 (2010)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (168.067 KB) | DOI: 10.22146/jfs.2896

Abstract

Low productivity in acid sulphate soil (ASS) pond can be improved by pond bottom reclamation. The aim of this research was to observe the effects of soil reclamation in acid sulphate soil on survival rate and production of tiger prawn. The research was conducted in a farmer pond in West Tarakan, Tarakan, East Kalimantan. The soil treatments were reclamation and without reclamation. The density of tiger prawn was 40.000 ind./ha during 3 months. The result showed that ponds with and without reclamation produce survival rate by 28.5% and 21.6% respectively. Pond with reclamation produce higher tiger prawn production (191.9 kg/ha) than without reclamation (143 kg/ha).
KUALITAS SELAI YANG DIOLAH DARI RUMPUT LAUT, Gracilaria verrucosa, Eucheuma cottonii, SERTA CAMPURAN KEDUANYA Eko N. Dewi; Titi Surti; Ulfatun Ulfatun
Jurnal Perikanan Universitas Gadjah Mada Vol 12, No 1 (2010)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (82.966 KB) | DOI: 10.22146/jfs.2904

Abstract

The aims of this research were to investigate the physical, chemical and organoleptic quality of jam that processed from 3 different seaweeds raw material. Materials that used in this research were Gracilaria verrucosa, Eucheuma cottonii and its combination. Seaweeds were boiled, blended, mixed with sugar and stirred for 20 minutes and jams are packaged. The experimental design applied was Completely Randomized Design with 3 treatments and each treatments were triplicates. Data on moisture content, sugar content, crude fi ber, pH, water activity, viscosity and sensory evaluation were tested with analyzes of variance. The HSD test was conducted in order to determine the differences among treatments. While sensory evaluation data were analyzed by using Kruskall Wallis test.Based on the results, moisture content of combination jam were significantly different (P<0.05) from E. cottonii jam, but it did not significantly different (P>0.05) to G. verrucosa jam. Water activity of combination jam showed there were significantly different (P<0.05) from E. cottonii jam, but it did not significantly different (P>0.05) to G. verrucosa jam. While, between G. verrucosa and E. cottonii showed did not significantly different (P>0.05). For pH value, sugar content, and crude fi ber content showed did not significantly different (P>0.05). There were highly signifi cant different (P<0.01) on the viscosity of E. cottonii jam from G. verrucosa jam, and it was significantly different (P<0.05) to its combination jam. While, viscosity of its combination jam did not significantly different (P>0.05) from G. verrucosa jam. The sensory evaluation (color, texture, taste and odor) results indicated that there were signifi cant differences (P<0.05) among treatments. However the spreads characteristic showed did not significantly different (P>0.05).
PENGARUH KONSENTRASI KAPUR (CaCO3) TERHADAP PERTUMBUHAN LOBSTER AIR TAWAR (Cherax quadricarinatus) Arki Y. Arsono; Rustadi Rustadi; Bambang Triyatmo
Jurnal Perikanan Universitas Gadjah Mada Vol 12, No 1 (2010)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (264.456 KB) | DOI: 10.22146/jfs.2909

Abstract

This research was conducted to determine the effect of lime (CaCO3) concentration on the availability of calcium in water and growth of Crayfish (Cherax quadricarinatus). Completely random design was used in the experiment that consisted of 4 treatments and 3 replications. Four treatments of lime concentration were 0, 50, 100, and 150 mg CaCO3/l. The research was conducted in Fisheries Research Station, Agriculture Faculty, Gadjah Mada University for 30 days. Ten Crayfish were reared in 60 cm x 40 cm x 50 cm aquarium in 60 l water. Crayfish were fed ad libitum with Tubifex tubifex. Calcium concentration on water, Crayfish growth, and water quality were observed every tenth days. The data of calcium concentration on water and Crayfish growth were analyzed with regression and correlation analysis at 95% confi dence level, whereas water quality analyzed descriptively. The research showed that there was correlation between lime concentration and its availability in the water. It showed that, more lime concentration resulted on higher calcium availability in water. Crayfish growth was relative faster on higher lime concentration.
BEBERAPA ASPEK BIOLOGI IKAN DEMERSAL DAN KRUSTASEA DI PERAIRAN ARAFURA Wedjatmiko Wedjatmiko
Jurnal Perikanan Universitas Gadjah Mada Vol 12, No 1 (2010)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (227.776 KB) | DOI: 10.22146/jfs.2914

Abstract

Arafura water is one of the centers of demersal fish and shrimp production in Indonesia. The exploitation of demersal fish and shrimp has grown quite rapidly, cause a declining trend in production from year to year. Besides the decline in production, changes also assumed to be occur in community and size structure of demersal fish and crustaceans. This research was conducted in the water of the Arafura in October to November 2006 to know the development of waters resources, particularly demersal fish and crustaceans (shrimp and crab). The result showed that there were changes in the composition of crustaceans, where commercial shrimp production decreased followed by an increase in types of non-commercial crustaceans (shrimp and crab). Family Portunidae (crabs) were very abundant and the most dominant species was Carybdis natator (98% of all crab species caught) with average catch rate of about 66 kg/hr. The size of demersal fish generally showed a declining trend. We observed in this research was much smaller than the previous year. Shrimp catches were dominated by krosok shrimp (Metapenaopsis sp.) which is a non-commercial shrimp.
SEBARAN SPASIAL PLANKTON DI PERAIRAN BAWEAN Djumanto Djumanto
Jurnal Perikanan Universitas Gadjah Mada Vol 12, No 1 (2010)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (100.167 KB) | DOI: 10.22146/jfs.2933

Abstract

The presence of phytoplankton in the water is very important because it serves as a primary producer that is often used as an indicator of aquatic fertility. The objective of the research was to determine the species, density and spatial distribution of plankton in the Bawean waters, Gresik regency. Baruna Jaya VIII research vessel was used for sampling on 29-30 April 2009. Sampling locations were set up in two stations on the position of 06°05'S, 112°36'E and 06°05'S, 120°12'E, and water samples were taken at depths of 0m, 20m, 40m and 60m in each station. Water was collected using water samplers at amounts of 10 liters each depth, thenwas filtered using plankton net, and then preserved with formalin 4%. Identification of genus plankton was carried out in the laboratory.The results showed that there were 20 genus of phytoplankton and 38 genus of zooplankton which were spread outin each depth of the water column unevenly. Plankton density was as much as 2330 cells / liter, while the density of zooplankton was as much as 507 individuals / liter. The highest density of phytoplankton was found in the water column depth of 20 m, while the lowest was found at the depth of 60m. The highest density of zooplankton was found in the surface, then decreases as the depth of waters. The dominant genusof phytoplankton were Pleurosigma sp., then Rizosolenia sp., Skeletonema sp., and the least was Actinocyclus sp. The dominant species of zooplankton are Ceratium sp. then Tintinopaial sp., and nauplius sp.

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