Rustadi Rustadi(1*)

(1) Jurusan Perikanan, Fakultas Pertanian UGM
(*) Corresponding Author


Plankton monitoring were conducted in hatchery and rearing hapas of red tilapia (Oreochromis sp.) to know plankton abundance and its utilization by fish during 98 days. Be-weekly plankton samples and fry fish guts were taken from fish hapa rearing, meanwhile brood fish gut were taken monthly. Be-weekly plankton and water monitoring were also applied in fish rearing without feed, water outside of hapas and river. Two units of bamboo frame, 6 x 6 m2 divided into 4 blocks respectively, were used for fixing 2 x 3 x 1 m3 hatchery hapa, and 1 x 2 x 1 m3 rearing hapa. Commercial feed was given daily to brood stock at the rate of 2% of the total fish weight and fry at the rate of 40%. Plankton density and composition in hatchery and rearing hapas were higher density than water reservoir and river. All size of red tilapia consumed selected plankton species, about 31.34-38.89% of existing species. Dominant plankton in hapa water were: Navicula, Closteriopsis, Sphaerocystis, Surirella dan Arthrodesmus and among them were prefered by red tilapia as natural food, namely Navicula, Surirella, Closteriopsis dan Sphaerocystis. Water quality parameters were still suitable for fish growth and breeding, but dissolved oxygen tended to low due to high plankton abundance.


plankton, hapa, hatchery, red tilapia, natural food

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Alabaster, J.S., and R. Lloyd. 1982. Water quality criteria for freshwater fish. FAO. 2nd. ed. Butterworth Scientific. 361 p.

Anonim. 1985. Standard methods for examination of water and wastewater. APHA, AWWA and WPCA. 16 th. edition. Washington DC. 1269 p.

Behrends, L.L., J.B. Kingsley, and A.H. Price. 1993. Hatchery production of blue tilapia, Oreochromis aureus (Steindachner), in small suspended hapa nets. Aquaculture and Fisheries Management. 24: 237-243.

Boyd, C.E. 1982. Water quality management for pond fish culture. Elsevier Science Pub. Co. Inc. New York. 318 p.

Bhujel, R.C. 2000. A review of strategies for the management of Nile tilapia (Oreochromis niloticus) broodfish in seed production systems, especially hapa-based systems. Aquaculture. 181: 37-59.

Dubost, N., G. Masson, and J.C. Moreteau. 1996. Temperate freshwater fouling on floating net cages: methods of evaluation, model and composition. Aquaculture. 143: 303-318.

George, T.T. 1975. Introduction and transplantation of cultivable species in Africa. Proc. FAO/CIFA symp.on Aquaculture in Africa, Accra, Ghana. CIFA/75/SR.7. 25 p.

Hora, S.L. and T.V.R. Pillay. 1962. Handbook of fish culture in the Indo-Pacific region. FAO Fish. Biol. Tech. Pap. 14. 204 p.

Kamiso, H.N, Rustadi, Djumanto, Sukardi, S.S. Djasmani, dan S.B. Priyono., 1997. Studi awal dan uji coba keramba jaring apung di Waduk Sermo Kabupaten Kulonprogo. Laporan penelitian. Kerjasama Diskan DIY dengan Fak. Pertanian UGM. 58 p.

Krismono, Didik Wahyu, H.T., A. Hardjamulia, S. Nuroniah dan C. Umar, 1987 Penelitian limno-biologis Waduk Saguling pada tahap Post-inundasi. Bull. Penel. Perik.Darat. 3 (6): 1-31.

Lovshin, L.L. and H.H. Ibrahim. 1988. Effects of broodstock exchange on (Oreochromis niloticus) egg and fry production in net enclosures, pp. 231-236. In: The 2th Internat. Symp. on Tilapia in Aquaculture. R.S.V. Pullin, T. Bhukaswan, K. Tonguthai, and J.L. Maclean (Eds.). ICLARM Conf.Proc., 15. Dept. of Fisheries. Bagkok and ICLARM Manila. 623 p.

Philippart, J.C.L. and J.C.L. Ruwet. 1982. Ecology and distribution of Tilapias, in: The biology and culture of tilapias. R.S.V. Pullin and R.H. Lowe-McConnell (Eds.). ICLARM Conf. Proc.9. ICLARM Manila. 205-246 p.

Rustadi, Ign. Hardaningsih, Triyatmo, B. Soebiantoro, dan Djumanto. 1996. Pembenihan nila merah (Oreochromis sp.) menggunakan jaring apung di Waduk Kedungombo. Jurnal Perikanan UGM. I : 54-62.

Rustadi, R. Kuwabara, dan Kamiso H.N. 2002. Water quality and planktological approach to monitor eutrophication by cage culture of red nile (Oreochromis sp.) in Sermo Reservoir, Yogyakarta, Indonesia. Asian Fisheries Sciences Journal. 15:135-144.

Shirota, A. 1996. The plankton of South Viet-Nam. Overseas Tech. Coop. Agency Japan. 416 p.

Simson, E.H. 1949. Measurment of diversity. Nature. 163: 688.

Uchida, R.N. and J.E. King. 1962. Tank Culture of tilapia. Fish. Bull. 62: 21-52

Ward, H.B. and G.C. Whipple. 1966. Fresh-water biology. W.T. Edmondson (ed.), John Wiley dan Sons, Inc. New York. 1248 p.


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Jurnal Perikanan Universitas Gadjah Mada (print ISSN 0853-6384; online ISSN 2502-5066) is published by Department of Fisheries, Universitas Gadjah Mada in collaboration with Semnaskan UGM (Seminar Nasional Tahunan Hasil Perikanan dan Kelautan) and ISMFR (International Symposium on Marine and Fisheries Research).


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