Induced spawning of sea bass, Lates calcarifer, and rabbitfish, Siganus guttatus, after implantation of pelleted LHRH analogue
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Captive Lates calcarifer broodstock at Tigbauan, Iloilo (Philippines) were implanted with cholesterol-based pellets of the LHRH analogue D-Trp6-desGly10-LHRH ethylamide or D-hArg(Et2)6, Pro9-NHet-LHRH at doses between 9.0 and 23.5 μg/kg body weight. In May, one of ten LHRH-treated females released partially hydrated ova into the tank 4 days after implantation. In July, at least one (and probably four) of five LHRH-treated females spawned in the tank 2 days after implantation; 2.6 million hatchlings were collected. In August, both LHRH-treated females spawned in the tank 2 days after implantation; 978 000 hatchlings were collected. None of the sham-operated control fish spawned in any of the experiments. Captive Siganus guttatus broodstock implanted with silastic-based pellets of the LHRH analogue D-Nal (2)6LHRH spawned 1–2 days earlier than sham-operated controls.
Suggested CitationHarvey, B., Nacario, J. F., Crim, L. W., Juario, J. V., & Marte, C. L. (1985). Induced spawning of sea bass, Lates calcarifer, and rabbitfish, Siganus guttatus, after implantation of pelleted LHRH analogue.
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Dhebtaranon, Yodying; Maneewongsa, Sujin; Wongsomnuk, Swad (Aquaculture Department, Southeast Asian Fisheries Development Center; International Development Research Centre, 1979)Feeding experiments on sea bass, Lates calcaifer , have been carried out in nylon net cages in Songkhla, since 1971, to obtain information on: (1) growth rates; (2) survival rates; (3) food conversion rates; (4) environmental ...