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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 8 Documents

Search results for , issue "Vol 12, No 2 (2010)" : 8 Documents clear

KARAKTERISASI KROMOSOM SIDAT BICOLOR, Anguilla bicolor bicolor McClelland, 1844 DI WAY SEMANGKA, LAMPUNG Marlina U. Genisa; Trijoko Trijoko; Niken S.N. Handayani
Jurnal Perikanan Universitas Gadjah Mada Vol 12, No 2 (2010)
Publisher : Universitas Gadjah Mada

The eels of genus Anguilla are catadromous, their juvenile grow in estuaries, rivers and lakes, and their spawning areas being offshore in the ocean. The eels of Anguilla have high economic potency due to good taste and high protein content. Eel Anguilla bicolor bicolor has been cultured but the seed was depending on the glass eels availability from nature. However, genetic study for Anguilla bicolor bicolor in Indonesia was limited. The aim of this research was to characterize the chromosome of eel Anguilla bicolor bicolor, to be used as a basic information for conservation and aquaculture development. Chromosome preparation was done by blood culture splash method. The results revealed that the diploid chromosomes (2n) of Anguilla bicolor bicolor was 38, classiﬁed as 34 (17 pairs) of metacentric and 4 (2 pairs) of submetacentric chromosomes. Displaying karyotype formula of 2n = 38 = 34m + 4 sm.

KOMPOSISI SUMBERDAYA IKAN DEMERSAL DI PERAIRAN SELAT MALAKA Wedjatmiko Wedjatmiko
Jurnal Perikanan Universitas Gadjah Mada Vol 12, No 2 (2010)
Publisher : Universitas Gadjah Mada

Fish resources found in waters of Malacca Strait consist of shrimp, demersal ﬁsh, large pelagic ﬁsh and small pelagic ﬁsh resources. Exploitation of demersal resources in the waters of Malacca Strait is very intensive. Therefore this study was aims to determine the development of the composition of demersal ﬁsh in the waters of Malacca Straits. The study was conducted in the waters of Malacca Straits that focused around Belawan and Bengkalis, which was held in June 2008, using the KR. Bawal Putih and bottom trawl as ﬁshing gear. The result showed that 70% of ﬁsh caught is demersal ﬁsh. The composition of the dominant demersal ﬁsh caught in the waters of Malacca Strait was different between Belawan and Bengkalis waters. In the Belawan waters, 3 most dominant demersal ﬁsh species caught were goats ﬁsh (Mullidae), squid (Loligonidae) and lizard ﬁsh (Synodontidae), while in Bengkalis waters, 3 most dominant demersal ﬁsh species caught were croackers ﬁsh (Scianidae), grunters ﬁsh (Pomadasidae) and stingrays (Dasyatidae). The difference in species composition of demersal ﬁsh in Belawan and Bengkalis waters, caused by differences in characteristics of the aquatic environment.

RECRUITMENT MECHANISM OF THE TROPICAL GLASS EELS GENUS ANGUILLA IN THE POSO ESTUARY, CENTRAL SULAWESI ISLAND, INDONESIA Hagi Y. Sugeha
Jurnal Perikanan Universitas Gadjah Mada Vol 12, No 2 (2010)
Publisher : Universitas Gadjah Mada

In order to understand recruitment mechanism of the tropical anguillid glass eels in the Poso Estuary, Central Sulawesi Island, Indonesia, a year quantitative sampling ﬁeld was conducted from May 2008 to April 2009. About 11181 specimens of glass eels were ﬁshed using line transects method of two triangular scoop nets through 13 times of new moon and 1761 specimens were preserved for examined in the laboratory. It was found that recruitment of glass eels occurred almost throughout the year of investigation and peak of recruitment occurred in August. Anguilla celebesensis and Anguilla sp. nov 1 were recruited in dry season, A. marmorata recruited in dry and rainy seasons, while A. interioris, A. bicolor paciﬁca and Anguilla spp. nov 2 recruited only in rainy season. Anguilla celebesensis (69.17%) was the most dominant species recruited in the estuary followed by A. marmorata (23.54%), Anguilla spp nov 1 (4.99%), Anguilla spp nov 2 (2.03%), A. interioris (0.14%) and A. bicolor paciﬁca (0.04%). The onset of recruitment as well as ﬂuctuation of abundance of the tropical anguillid glass eels into Poso estuary were strongly associated with seasonal and circadian rhythmic as well as tidal and lunar cycles that occurred in the central Indonesian regions.

INFEKSI DAN PATOLOGI PARASIT Actinocleidus sp. (MONOGENEA) PADA INSANG IKAN LELE DUMBO, Clarias gariepinus Hilal Anshary
Jurnal Perikanan Universitas Gadjah Mada Vol 12, No 2 (2010)
Publisher : Universitas Gadjah Mada

The aims of this research were to study level of infection of the monogenean parasite Actinocleidus sp. and its pathological effects on the gills of Catﬁsh ( Clarias gariepinus). This research was conducted in April to June 2008 at several Catﬁsh culture localities in Makassar and Maros, South Sulawesi. The ﬁsh were chategorized in three different ages group, i.e. small (5 < x ≤ 10 cm), middle (10 < x ≤15 cm) and large (x ≥15 cm). The totals of 270 ﬁsh were examined with 9 times frequency of sampling conducted every week.Prevalence of Actinocleidus sp. infection at the three culture facilities was very high (100%). Mean intensity at small, middle and large ﬁsh cultured in Adhyaksa were 85.9, 93.2 and 55.2, respectively. In Arief Rate, the mean intensity of infection at small, middle and large ﬁsh were 17.5, 15.1 and 7.2, respectively, whereas in Maros the mean intensity of infection were 56.7, 64.7 and 40.9, respectively. There was a high signiﬁ cant difference of mean intensity between small, middle and large ﬁsh (P < 0.01). Pathological effects of the parasite Actinocleidus sp. on gills showed some damages, i.e. distal and basal hyperﬂ asia, fusion and overstimulated of mucus production. The high prevalence and mean intensity of the parasite infection indicating the worse culture management system applying by the Catﬁsh farmers as well as by the high stocking density of the ﬁsh. The lower mean intensity of infection seen in the larger ﬁsh might be indicating that the larger ﬁsh had already developed immune system than the small ones.

ANALISIS PARAMETER OSEANOGRAFI UNTUK PENENTUAN HABITAT IKAN PELAGIS DI PERAIRAN PAPARAN SUNDA Mutiara R. Putri; Fitri Suciaty
Jurnal Perikanan Universitas Gadjah Mada Vol 12, No 2 (2010)
Publisher : Universitas Gadjah Mada

In order to determine the regions in the Indonesia waters that are suitable for small pelagic fish habitat, analysis of net primary productivity (NPP) that is associated with oceanographic conditions has been carried out in this study. The NPP values derived from satellite data were calculated using the Vertically Generalized Productivity Model (VGPM). Meanwhile, the oceanographic conditions which are represented by temperature, salinity, and ocean currents were obtained by using a hydrodynamics numerical model. The result of this analysis was then compared with available acoustic observations. The results show that NPP in the Sunda Shelf Waters have different variations. The NPP along the southern coast of Kalimantan in the Java Sea and Centre Part of Malaka Strait around the Riau Waters always high throughout the year, i.e. more than 1000 mgC/m²/day and 750 mgC/m²/day, respectively. Variations in NPP values were strongly inﬂ uenced by seasonal variation of oceanographic conditions, which would physically affect the living habitat of pelagic fish in the Sunda Shelf. During the east monsoon, the salinity and temperature in the Eastern Java Sea and Makassar Strait were very suitable for pelagic fish, i.e. from 32 to 33 psu and 27 to 28°C, respectively. Meanwhile, during the east monsoon, the condition becomes less suitable. By contrast, in the Malaka and Karimata Straits, the oceanographic conditions during the west monsoon were more suitable, with almost similar mixed layer depth, i.e. 5 meters.

KOMPOSISI UDANG HASIL TANGKAPAN JARING CIKER PADA NELAYAN TEGALKAMULYAN DI KABUPATEN CILACAP Supardjo S. Djasmani; Djumanto Djumanto; Septy T. Sari
Jurnal Perikanan Universitas Gadjah Mada Vol 12, No 2 (2010)
Publisher : Universitas Gadjah Mada

The purpose of this research was to investigate the catch composition and catch per unit effort of shrimp captured using ciker net of ﬁshermen in Tegalkamulyan Cilacap district. The sample was collected using ciker net between the ﬁrst week of February and April 2008. The samples were separated between shrimp and ﬁshes then measured total biomass weight. Individual shrimp was identiﬁ ed, measured their weight and total length. The daily shrimp catch data was grouped based on lunar circulation into new moon, ﬁrst quarter, full moon and third quarter. The t-test and anova was performed to the means catch between shrimp and ﬁsh, and shrimp and group of catch. The results showed that the catch during new moon was signiﬁcantly higher than full moon, but not signiﬁcantly different with the ﬁrst and third moon. The average catch per trip of ciker net composted of shrimp (9.27 kg) which was not signiﬁcantly different with ﬁsh weight (6.8 kg). The shrimp catch composed of ﬁ ve species, namely: Penaeus monodon, Penaeus merguiensis, Metapenaeus ensis, Penaeus longipes and Parapenaopsis sculptilis. The highest average catch of shrimp was P. merguiensis 5.76 kg (62.2%) then followed by M. ensis 2.03 kg (21.9%), while the rest was other shrimp. Based on individual length and weight, P. monodon, P. merguiensis and M. ensis were categorized into big size shrimps, while others were small size. The sex ratio of P. monodon and P. merguiensis was 1:1, while others were not equally to 1:1.

PENDEDERAN TIRAM MUTIARA, Pinctada maxima DENGAN PERBEDAAN KEDALAMAN Sudewi Sudewi; Apri I. Supii; Tatam Sutarmat; Hirmawan T. Yudha
Jurnal Perikanan Universitas Gadjah Mada Vol 12, No 2 (2010)
Publisher : Universitas Gadjah Mada

The aims of this experiment were to study the effect of depth to the growth and survival rate of pearl oyster (Pinctada maxima) during nursery period. The experiment was conducted in ten weeks from November 2008 to January 2009 at the Pegametan Bay using spat collector. The spat collectors were wrapped using polyethylene net, then hanged and placed in the ﬂoating cage. The growth and survival rate of juveniles were measured and counted weekly. The experiment used Completely Randomized Design (CRD) with four treatments and four replications. The treatments were 4 depths that were 0 m (near surface), 5 m, 10 m and 15 m. The results showed that the density of plankton in each depth was signiﬁcantly different, which lead to the differencies of growth among treatment. The high growth and survival rate were obtained at the depth of 5 m. During ten week in nursery, the shell could growth from 3.0 mm to 36.5 mm in length, and from 2.45 mm to 30.1 mm in width. The survival rate was ranged from 2.68% to 25.15%.

PENGEMBANGAN METODE LOOP-MEDIATED ISOTHERMAL AMPLIFICATION OF DNA DAN APLIKASINYA UNTUK DETEKSI KOI HERPES VIRUS PADA BEBERAPA JENIS IKAN Murwantoko Murwantoko; Triyanto Triyanto; Dimas A. Pamungkas
Jurnal Perikanan Universitas Gadjah Mada Vol 12, No 2 (2010)
Publisher : Universitas Gadjah Mada

The purposes of this experiment were to establish loop-mediated isothermal ampliﬁcation of DNA ( LAMP) method and its application to observe the presence and duration of koi herpes virus ( KHV) in freshwater ﬁshes after infection. The infection was carried out using 4-6 cm length of java barb (Barbodes gonionotus), grass carp (Ctenoparingodon idella), gold ﬁsh (komet) (Carassius auratus), tambaqui (Colossoma macropomum) and koi (Cyprinus carpio koi) ﬁshes. Fishes were infected intraperitoneally with KHV inoculums and 2 ﬁshes were sampled everyday. DNA was extracted from gill and used for diagnosis with LAMP assays. The result of this experiment showed LAMP assay can be established and gave 100 times more sensitive than conventional PCR assay. Koi was conﬁrmed as a host of KHV. Java barb, tambaqui, gold ﬁsh and grass carp can serve as vector for KHV and the presence of KHV was detected in java barb and tambaqui for 4 days, goldﬁsh and grass carp for 5 days after infection.

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