An experiment in rearing larval Siganus vermiculatus (Valenciennes) and some observations on its spawning cycle |
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| Authors: | D Popper RC May T Lichatowich |
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| Institution: | 1. FAO/UNDP Aquaculture Project Raviravi, c/o Fisheries Division, Ministry of Agriculture, Fisheries and Forests, Lautoka Fiji;2. Hawaii Institute of Marine Biology, Kaneohe, Hawaii U.S.A.;3. Fisheries Division, Ministry of Agriculture, Fisheries and Forests, Lautoka Fiji |
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| Abstract: | Siganus vermiculatus spawned in captivity on three occasions, and limited numbers of newly hatched larvae were stocked in an 80-m3 outdoor concrete tank and a 2000-m2 fish pond in Fiji. Survival through the larval stage was 9% in the tank, in spite of high temperatures and relatively low food densities. No larvae survived in the pond.Data collected on the appearance of fry, spawning, and the gonadal state of adults suggest that S. vermiculatus in Fiji spawns monthly on or around the first lunar quarter during its spawning season.Possible ways to solve problems encountered in this experiment are discussed. |
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