Tampubolon, Prawira Atmaja R.P.
Masyarakat Iktiologi Indonesia (MII )

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Pertumbuhan ikan oskar (Amphilophus citrinellus, Gunther 1864) di Waduk Ir H. Djuanda, Jawa Barat [Growth of Midas Cichlid (Amphilophus citrinellus, Gunther 1864) in Ir. H. Djuanda Reservoir, West Java] Tampubolon, Prawira Atmaja R.P.; Rahardjo, M. F.; Krismono, nFN
Jurnal Iktiologi Indonesia Vol 12, No 2 (2012): Desember 2012
Publisher : Masyarakat Iktiologi Indonesia (MII )

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Abstract

This research was held on October 2011 until January 2012 in Ir. H. Djuanda Reservoir, West Java, in order to describe some aspects of Midas cichlid (Amphilophus citrinellus) growth, such as length-weight relationship, condition factor, and growth constant (K). The samples were captured from six stations using 1, 1.5, 2, 2.5, 3, and 3.5 inches mesh sized of gill nets. The captured samples were separated in accordance to the stations, then the fish size and weight were measured. The total of fish captured were 460 individuals from six sampling stations. Total length of the captured fishes ranged from 62-210 mm and body weight is 4.81-187.18 gram. Midas cichlids are positive allometric. The condition factor varied depending on periods and stations. The growth formula for Midas cichlid was Lt= 215.78 (1-e'039 (t+025)).AbstrakPenelitian ini dilakukan pada bulan Oktober 2011-Januari 2012 di Waduk Ir. H. Djuanda, Jawa Barat, dengan tujuan untuk mendeskripsikan beberapa aspek yang bertalian dengan pertumbuhan ikan oskar (Amphilophus citrinellus) di waduk tersebut, seperti hubungan panjang-bobot, faktor kondisi, dan koefisien pertumbuhan. Contoh ikan diambil di enam stasiun yang menggunakan alat tangkap jaring insang berukuran mata jaring 1; 1,5; 2; 2,5; 3; dan 3,5 inci. Contoh ikan yang tertangkap dipisahkan berdasarkan stasiun, kemudian diukur panjang dan ditimbang bobotnya. Total ikan contoh yang tertangkap selama penelitian berjumlah 460 ekor yang berasal dari enam stasiun pengamatan. Panjang total dan bobot tubuh ikan berkisar antara 62-210 mm dan 4,81-187,18 gram. Pola pertumbuhan ikan oskar ada-lah alometrik positif. Faktor kondisi ikan oskar bervariasi berdasarkan waktu dan stasiun pengamatan. Persamaan pertumbuhan panjang ikan oskar mengikuti formula Lt= 215,78 (1-e-0,39 (t+0,25)).  
ASPEK PEMIJAHAN IKAN MOTAN, Thynnichthys thynnoides, BL1EKER1852 (FAMILICYPRINIDAE) DI RAWA BANJIRAN SUNGAI KAMPAR KIRI, RIAU [Spawning aspects of Thynnichthys thynnoides Bleeker 1852 (Family Cyprinidae) in the floodplain of Kampar Kiri River, Riau] Tampubolon, Prawira Atmaja R.P.; Rahardjo, M. F.; Sjafei, Djadja S.; Simanjuntak, Charles PH
Jurnal Iktiologi Indonesia Vol 8, No 1 (2008): Juni 2008
Publisher : Masyarakat Iktiologi Indonesia (MII )

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Abstract

Study on the spawning aspects of Thynnichthys thynnoides in the floodplain of Kampar Kiri River was conducted from June 2006 to December 2006, using experimental gillnet and trap. Total samples were 852 individuals, comprised 479 individuals from Mentulik (294 males and 185 females) and 373 individuals from Simalinyang (197 males and 176 females). The range of total length was between 94-198 mm for fishes caught from Mentulik and 104-227 mm from Simalinyang. Sex ratio was counted for fishes in QSIIV. Sex ratio is balanced for fish in Mentulik and unbalanced for fish in Simalinyang. The first size of maturity for male in Mentulik and in Simalinyang were 105 and 118 mm; while for female ones were 109 and 108 mm. Presumably, the spawning season is on September-December with the peak spawning in October. Fecundity ranged 781-27135 eggs for fish from Mentulik and 797-35804 eggs from Simalinyang. The Fish is indieaied to be a total spawner.
KEBIASAAN MAKANAN IKAN MOTAN, Thynnichthys thynnoides, Bleeker, 1852 DI RAWA BANJIRAN SUNGAI KAMPAR KIRI, RIAU [Food habits of Thynnichtys thynnoides Bleeker, 1852 in floodplain river of Kampar Kiri, Riau] Tampubolon, Prawira Atmaja R.P.; Simanjuntak, Charles P.H.
Jurnal Iktiologi Indonesia Vol 9, No 2 (2009): Desember 2009
Publisher : Masyarakat Iktiologi Indonesia (MII )

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Abstract

Study on the food habits of Thynnichthys thynnoides in the floodplain of Kampar Kiri River, Riau, was conducted from July to Desember 2006, using experimental gillnet and trap. The main objectives of the study were to analyze the food compotition of T. thynnoides from two areas (Mentulik and Simalinyang) and the changes of the food in relation to season. Total samples are 252 fishes, comprises 125 fishes from Mentulik and 127 fishes from Simalinyang. Food analysis was determined by using Index of Preponderance. The result showed that the main food of T. thynnoides both in Mentulik and Simalinyang was Bacillariophyceae. At Mentulik, the most common prey items were Cocconeis, Cyclotella, and Nitzschia; on the other hand at Simalinyang Cocconeis, Cyclotella, and Pleurotaenium more representative. The composition of food items varied monthly, especially at Simalinyang. T. thynnoides from Mentulik and Simalinyang has same trophic positions.
Pertumbuhan ikan oskar (Amphilophus citrinellus, Gunther 1864) di Waduk Ir H. Djuanda, Jawa Barat [Growth of Midas Cichlid (Amphilophus citrinellus, Gunther 1864) in Ir. H. Djuanda Reservoir, West Java] Tampubolon, Prawira Atmaja R.P.; Rahardjo, M. F.; Krismono, nFN
Jurnal Iktiologi Indonesia Vol 12, No 1 (2012): Juni 2012
Publisher : Masyarakat Iktiologi Indonesia (MII )

Show Abstract | Original Source | Check in Google Scholar | Full PDF (467.198 KB)

Abstract

This research was held on October 2011 until January 2012 in Ir. H. Djuanda Reservoir, West Java, in order to describe some aspects of Midas cichlid (Amphilophus citrinellus) growth, such as length-weight relationship, condition factor, and growth constant (K). The samples were captured from six stations using 1, 1.5, 2, 2.5, 3, and 3.5 inches mesh sized of gill nets. The captured samples were separated in accordance to the stations, then the fish size and weight were measured. The total of fish captured were 460 individuals from six sampling stations. Total length of the captured fishes ranged from 62-210 mm and body weight is 4.81-187.18 gram. Midas cichlids are positive allometric. The condition factor varied depending on periods and stations. The growth formula for Midas cichlid was Lt= 215.78 (1-e'039 (t+025)). AbstrakPenelitian ini dilakukan pada bulan Oktober 2011-Januari 2012 di Waduk Ir. H. Djuanda, Jawa Barat, dengan tujuan untuk mendeskripsikan beberapa aspek yang bertalian dengan pertumbuhan ikan oskar (Amphilophus citrinellus) di waduk tersebut, seperti hubungan panjang-bobot, faktor kondisi, dan koefisien pertumbuhan. Contoh ikan diambil di enam stasiun yang menggunakan alat tangkap jaring insang berukuran mata jaring 1; 1,5; 2; 2,5; 3; dan 3,5 inci. Contoh ikan yang tertangkap dipisahkan berdasarkan stasiun, kemudian diukur panjang dan ditimbang bobotnya. Total ikan contoh yang tertangkap selama penelitian berjumlah 460 ekor yang berasal dari enam stasiun pengamatan. Pan-jang total dan bobot tubuh ikan berkisar antara 62-210 mm dan 4,81-187,18 gram. Pola pertumbuhan ikan oskar ada-lah alometrik positif. Faktor kondisi ikan oskar bervariasi berdasarkan waktu dan stasiun pengamatan. Persamaan pertumbuhan panjang ikan oskar mengikuti formula Lt= 215,78 (1-e-0,39 (t+0,25)).