A review of grouper (Epinephelus suillus) fry production research in Malaysia
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Research on grouper (Epinephelus suillus) fry production in captivity has been carried out in Malaysia since 1986 at Tanjung Demong Marine Finfish Production and Research Centre (TDMFPRC) but the breakthrough was only achieved four years later in 1990. Eggs were obtained through natural and induced spawning in tanks. Natural spawning of grouper in captivity seldom occurred and was unpredictable. However induced spawnings were successfully carried out by injecting human chorionic gonadotropin (hCG) intramuscularly at a dose of 500-1000 IU/kg fish. The results from several trials on larval rearing conducted since 1989 until recently showed that larvae obtained from natural spawnings survived longer with some reaching the juvenile stage. The highest recorded survival rate of 43 days posthatch (32.5 mm total length) was 12.1% at 28-32 °C water temperature. On the other hand, 100% mortality usually occurred in larvae obtained from induced spawning 7 days after hatching. The major constraints of grouper fry production in Malaysia are lack of male spawners, inconsistent and unpredictable natural spawning, small quantity of eggs released every spawning day, poor fertilization and hatching rate, weak hatchlings, and high mortality rate at the early stages of larval development. The latter is probably due mainly to problems on initial feeding.
Ali, H. M. (1996). A review of grouper (Epinephelus suillus) fry production research in Malaysia. In C. L. Marte, G. F. Quinitio, & A. C. Emata (Eds.), Proceedings of the Seminar-Workshop on Breeding and Seed Production of Cultured Finfishes in the Philippines, Tigbauan, Iloilo, Philippines, 4-5 May 1993 (pp. 140-149). Tigbauan, Iloilo, Philippines: SEAFDEC Aquaculture Department. http://hdl.handle.net/10862/574
PublisherAquaculture Department, Southeast Asian Fisheries Development Center
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BookBureau of Agriculture and Fisheries Standards - 2009 - Bureau of Agriculture and Fisheries StandardsThis Philippine National Standard for live, chilled/frozen grouper identifies the Philippine species of grouper, specifies their essential composition and quality factors (including size classification and quality characteristics), provides the presentation, packaging and labeling requirements, indicates the methods sampling, examination and analyses, and defines the types of defectives. It is hoped that this standard accomplishes our two pronged goal of protecting consumer health and making the Philippine fish and fishery products globally competitive.
Conference paperMNR Alava, MLL Dolar & JA Luchavez - In CL Marte, GF Quinitio & AC Emata (Eds.), Proceedings of the Seminar-Workshop on Breeding and Seed Production of Cultured Finfishes in the Philippines, Tigbauan, Iloilo, Philippines, 4-5 May 1993, 1996 - Aquaculture Department, Southeast Asian Fisheries Development CenterNatural spawnings of four Epinephelus species reared in the laboratory were observed from 1987 to 1992. These species are: E. summana, E. caeruleopunctatus, E. macrospilus and E. fuscoguttatus. Spawning was serial, usually occurring at night, on or 1-6 days after the new moon. Egg characteristics of these four species were compared. Fertilized egg and early larval development of E. summana and E. fuscoguttatus are discussed.
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