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Ahmadi Riyanto
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INDONESIA
Jurnal Iktiologi Indonesia (Indonesian Journal of Ichthyology)
Published by Masyarakat Iktiologi Indonesia
ISSN : 16930339     EISSN : 25798634     DOI : https://doi.org/10.32491
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology
Aims and Scope Aims: Jurnal Iktiologi Indonesia (Indonesian Journal of Ichthyology) aims to publish original research results on fishes (pisces) in fresh, brackish and sea waters including biology, physiology, and ecology, and their application in the fields of fishing, aquaculture, fisheries management, and conservation. Scope: This journal publishes high-quality articles dedicated to all aspects Aquaculture, Fish biodiversity, Fisheries management, Fish diseases, Fishery biotecnology, Moleculer genetics, Fish health management, Fish biodiversity.
Arjuna Subject : Biokimia, Genetika dan Biologi Molekuler - Biokimia, Genetika dan Biologi Molekuler (Lain-Lain)
Articles 420 Documents
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PENAMPILAN IKAN RAINBOW SULAWESI (Marosatherim ladigesi) PADA KISARAN KESADAHAN YANG BERBEDA [Sulawesi rainbowflsh {Marosatherim ladigesi) appearance in different range of hardness] Triyanto Triyanto
Jurnal Iktiologi Indonesia Vol 8 No 1 (2008): Juni 2008
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v8i1.281

Abstract

This research aimed to study the effect of hardness on the appearance and the growth of rainbowflsh of Sulawesi (Marosatherim ladigesi). The parameters measured were body length, survival rate, and body color. The experiment was conducted using aquariums(80 x 40 x 40 cm3) filled with water each contained hardness concentrations ranged from 50 - 100; 100 - 150; to 150 - 250 mgCaCO3/L) and added with 25 fish sized of 1,5 - 2 cm. The fish was reared and fed with Chironorma. The research has been conducted on Laboratory of Research Center for Limnology-LIFI in March-June 2007, The result showed that the best growth measured as the body length was 0,019 cm/day obtained from the fish grew on water contained hardness concentrations ranged from 100 to 150 mg CaCO3/L and the best survival rate was 100% obtained from the fish grew on water contained hardness concentrations ranged from 150 to 250 mg CaCO3/L. However, the results of both treatments did not show significant difference statistically (ANOVA; p>0.05). The difference of appearance was shown on fish grew on water contained hardness concentrations ranged from 150 to 250 mg CaCO3/L where the fish body were relatively clean and bright.
REPRODUKSI IKAN NILA (Oreochromis nilotkm) SELEKSI DAN NON SELEKSI DENGAN PEMIJAHAN BUATAN: KARAKTERINDUK, TELUR, EMBRIODAN BENIH [Reproduction of selected and non selected nile tilapia (Oreochromis niloticm) with artificial induced breeding: character of broodstoek, egg, embryo, and larvae] Yohanna R. Widyastuti; Jojo Subagja; Rudhy Gustiano
Jurnal Iktiologi Indonesia Vol 8 No 1 (2008): Juni 2008
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v8i1.282

Abstract

Selection program is one alternative to control and improve growth performance. It is well known that decreasing growth rate has a correlation to the early maturation of the brood stocks. Objective of the present study was to elaborate the information of bioreproduction parameters of selected tilapia brood stocks coming from selective breeding on the growth improvement. Three groups of brood stock were used in this study defining as the first generation of selected brood stock (01) and the second generation (02) and farmer’s tilapia (M). Each group of brood stock has 5 pair brood stocks as replications. Hormone injection was given for artificial spawning. Eggs were then incubated in the jars equipped with recirculation system. Larvae were transferred to aquaria for growth observation. Results showed that artificial spawning could be done on tilapia using hCG injection as priming prior to ovaprim. Although there were no significantly different (P > 0.05) in egg diameters, the eggs of selected brood stock were still slightly bigger than non selected brood stock. Larvae of the second generation of selected brood stock has better growth rate than the first generation and non-selected one.
PERTAMBAHAN BIOMASSA IKAN NILA (Oreochromis niloticus) SELEKSI BAN NON SELEKSI DALAM KERAMBA JARING APUNG DI WADUK CIRATA DAN DANAU LIDO [Growth of selected and non selected Oreochromis niloticus in floating net cages in Grata Reservoir and Lido Lake] Kusdiarti Kusdiarti; Ani Widiyati; Winarlin Winarlin; Rudhy Gustiano
Jurnal Iktiologi Indonesia Vol 8 No 1 (2008): Juni 2008
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v8i1.283

Abstract

The objective of this study was to evaluate the result of selection program by comparing the growth of selected and non-selected fish. The study was carried out in floating net cages in Cirata Reservoir and Lido Lake, Each group of the examined fish used four cages 2x2x2m3 sized with densities of 300 fish in Cirata Reservoir and 225 fish in Lido Lake. Fish was fed 5% body weight a day with commercial pellet. Growth was observed by measuring the total biomass of every cage per three weeks. Results showed that selected fish has slightly bigger (26.0 ± 1.63) than non-selected one (23.0 ± 2.45) in Cirata Reservoir. For survival rate, selected fish has better performance (92 4 ± 0.01) than the non selected one (84,4 ± 0.05) in floating net cages in the Lido Lake (P < 0.01).
KEBIASAAN MAKANAN IKAN MOTAN (Thynnichthys polylepis) DI WADUK KOTO PANJANG RIAU [Food habits of Thynnichthys polylepis in Koto Panjang Reservoir, Riau] Adriani SN Krismono; Anisa Rahma Lathifa; Sutrisno Sukimin
Jurnal Iktiologi Indonesia Vol 8 No 1 (2008): Juni 2008
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v8i1.284

Abstract

This research aim to describe the food habits of Thynnichthys polylepis. Research location is situated in Koto Panjang Reservoir. The research was conducted in March, June, and December 2007. Fishes were captured using experimental gillnet with mesh sizes of 1.5; 2,0; 2.5; and 3.0 inch. The results showed that the composition of food was comprises of six classes, such as Chlorophyceae, Cyanophyceae, Desmidium, Dinophyceae, Protozoa, and Rotifera, with genus of Peridinium (Dinophyceae) as main food. Male and female fishes consumed relative similar food on pursuant to time, area, and length. The niche overlap of food between male and female fishes was high.
PERKEMBANGAN GONAD IKAN SIDAT (Anguilla marmorata) DI DANAU POSO [Gonads development of eels (Anguilla marmorata) in Lake Poso] Gadis Sri Haryani; Lukman Lukman; Triyanto Triyanto
Jurnal Iktiologi Indonesia Vol 8 No 1 (2008): Juni 2008
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v8i1.285

Abstract

The gonads condition of eels (Anguilla marmorata) in Lake Poso was studied. The aim of this research is to identify gonads development of eel in Lake Poso and estuary of Poso River. Based on histological analyses of the gonad, eels collected in the Lake Poso and in the estuary were in the early vitellogenic stage, and the GSI (Gonadosomatic index) value ranged between 0.60 -4.40%. Development stage of female gonads showed four stages: chromatin nucleolar, perinucleolar, cortical alveoli and vitellogenic. The male gonads showed only pre-spermatogenic stage which contains only spermatogonia. Next stages should be reached during down stream migration to the deep sea.
OCCURRENCE OF DEEP-WATER LEATHERJACKET FISH Thamnaconus tessellatus (GUNTHER, 1880) (TETRAODONTIFORMES: MONACANTHIDAE) FROM BITUNG, INDONESIA Teguh Peristiwady
Jurnal Iktiologi Indonesia Vol 8 No 2 (2008): Desember 2008
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v8i2.286

Abstract

Occurrence of Deep-water Leatherjacket Fish Thamnaconus tessellatus (Gunther, 1880) (Tetraodontiformes: Monacanthidae) From Bitung, Indonesia. One specimen of Thamnaconus tessellatus (CRDOA 6367; 204.00 mm SL) was collected from Winenet Fish Market, Bitung, North Sulawesi, Indonesia, on 11 February 2008. The specimen was collected from depths of about 20-30 m in association with other coral reef fishes catch. This genus is poorly known because of their generally deep-water habitats and normally on the trawling grounds. The deepest record for the genus is collected by trawl net at a depth of 360 m (Fiji), 270 m (Loyalty Island) and between (230-260) m (New Caledonian). Found in many locations in southern Japan southward through the Ogasawara Islands, Malaysia, Taiwan, Hong Kong, Philippines, Indonesia and Papua New Guinea to Australia and New Caledonia. Its morphological features and diagnostic characters are discussed and illustrated.
KERAGAAN GENETIK IKAN SIDAT (Anguilla marmorata) DARI PERAIRAN POSO BERDASARKAN POLIMORFISME MITOKONDRIA DNA D-LOOP [Genetic Appearances of Eel (Anguilla marmorata) from Poso Waters Based on Mitochondria Polymorphism DNA D-loop] Triyanto Triyanto; Lukman Lukman; Djamhuriyah S. Said
Jurnal Iktiologi Indonesia Vol 8 No 2 (2008): Desember 2008
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v8i2.287

Abstract

Anguilla marmorata is the dominant eel found in Poso. It has the largest body size and distributes on all habitat types especially the lake and the river of Poso. As catadromous fish, the larvae of eel grow in marine ecosystem which subsequently migrates and develops in freshwater ecosystem such as lakes and rivers. Information concerning variance of morphologies from the eel has been known but biological information especially in genetic not yet many reported. A. marmorata from various locations in Lake Poso (Pendolo, Tentena, Solokaya) and River Poso (Pandiri and estuary) was examined using polymorphism of the mitochondria DNA (mtDNA) D-loop markers. Four composite haplotypes were detected using digestion of D-loop sequences with five endonucleases: HaeIII, Hin61, /?sal, Taq\, and NdeII. There was no significant difference observed on the genetic variation among the eel populations.
KAJIAN KEBIASAAN MAKANAN, LUAS RELUNG, DAN INTERAKSI ANTAR JENIS IKAN DI WADUK CIRATA, JAWA BARAT [Study on food habit, niche breadth, and species interaction of food in Cirata Reservoir, West Java] Didik Wahju Hendro Tjahjo; Sri Endah Purnamaningtyas
Jurnal Iktiologi Indonesia Vol 8 No 2 (2008): Desember 2008
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v8i2.288

Abstract

Development of fish culture in float net cages in Cirata Reservoir was very fast so overstep the amount that permitted. The activities had impacted at growth of fish community. Those resulted of exploiting of food resources potency available was not yet ever been optimal. Therefore, purpose of this research was evaluated to role and fish species interaction in exploiting of food resource in Cirata Reservoir. The study was conducted in Ir. H. Djuanda Reservoir on March, June, and December 2007. Those observations were conducted with stratified method. Fish species were caught during this studies e.g. nilem(Psteochilus hasselti), patin (Pangasionodon hypopthalmus), nila (Oreochromis niloticus), benteur (Puntius binotatus), hanipal {Hampala macrolepidota), oscar (Amphilophus citrinellus), kebogerang (Mystus Negriceps), goldsom (Amphilophus alfari), lalawak {Barbonymus bramoides), tagih (Mystus nemurus), marinir (Parachromis managuense), betutu (Oxyeleotris marmorata), mas (Cyprinus carpio), bawal (Colossoma macropopomum) and gabus (Channa striata). Nila has food niche breadth the widest ness, this mean that the fish had much more adaptation ability of food fluctuation compared to the other fish species herbivore. Food competition opportunity between fish species in Cirata Reservoir was be very low. The condition could be interpreted that structure role of the fish community relative stabilize, because food resource was very copious availableness and had not yet been exploited in an optimal fashion. Therefore, the effort was improve exploiting of the food resource could be done by the stocking of herbivore fish, especially plankton feeder.
PERUBAHAN KOMPOSISI KOMUNITAS IKAN DAN FAKTOR-FAKTOR PENTING YANG MEMENGARUHI SELAMA EMPAT PULUH TAHUN UMUR WADUK DJUANDA [Change of Fish Community Composition and The Influencing Important Factors During Fourty Years of The Djuanda Reservoir Impounded] Endi Setiadi Kartamihardja
Jurnal Iktiologi Indonesia Vol 8 No 2 (2008): Desember 2008
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v8i2.289

Abstract

Ecologically, damming of Citarum River have altered running waters ecosystem to become impounded ecosystem, Djuanda reservoir. Studies concerning change of fish community composition and important factors which influence them have been conducted in the Djuanda reservoir after 40 years the reservoir completed. Primary data of fish composition were obtained from experimental gillnet sampling of various mesh sizes which compiled in one fleet net, while secondary data were obtained from the literature study. Data analysis and evaluation was conducted based on 4 periods of 10 years since flooding of the reservoir i.e. 1968-1977, 1978-1987, 1988-1997, and 1998-2007. Important ecological factors such as loss of spawning and nursery habitat, degradation of water quality and water level fluctuation of the reservoir have influenced the indigenous fish species of the Citarum River. Fish composition has changed in number as well as in comparison between the indigenous species (23 species) and the exotic species (11 species). Total number of fish species decreased from 34 species to 20 species, while comparison between the indigenous species and exotic species changed from 23:8 to 9:11. Some indigenous species such as carp (Tor duoronensis), java barb (Barbodes gonionotus), lalawatc barb (Barbodes bramaides), genggehek (Mystacoleucus marginalus), jambal catfish (Pangasius djambai), Arengan (Labeo chrysophaekadion), eel (Anguilla sp.) and feather back (Notoplerus chitala) disappeared due to their riverine species need running water habitat and relatively high dissolved oxygen content.
PENAMPILAN IKAN PANCHAX KUNING (Aplocheilus lineatus) PADA PEMBERIAN PAKAN YANG BERBEDA [The appearance of Aplocheilus lineatus on effect of different feed] Novi Mayasari; Djamhuriyah S. Said
Jurnal Iktiologi Indonesia Vol 8 No 2 (2008): Desember 2008
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v8i2.290

Abstract

The research on effect of feeds type on fish have common done. However information about appropriate feeds type for the growth and performance of Aplocheilus lineatus has been unknown well. The aim of this study is to determine the effect of different feed to growth, survival rate (SR) and body colour of A. lineatus. Three different feeds was used in this study, were commercial diet (pellet), Tubificidae, and Chironomus. Each treatment repeated three times. Ten A. lineatus juveniles 1.2 - 2.1 cm in length were kept in 60 x 30 x 30 cm5 aquarium for 3 months with observation period every two weeks. The result shows that there was not significant survival rate of/1, lineatus (p > 0.05). There is significant different in daily growth (length and weight) and body colour. Fish which fed with Tubificidae show the best growth of length (O.OS36 cm/day) and the best growth of weight (0.0327 g/day). Difference of appearance of fish body which clearly seen in male fish. Colour of fish body relatively shines and more brightly in fish which fed with Chironomus.

Page 36 of 42 | Total Record : 420

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