Broodstock management and egg production of milkfish, Chanos chanos Forsskal
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The milkfish, Chanos chanos Forsskal, industry in the Philippines suffers from a limited supply of wild fry. The demand for milkfish fry has spurred research in artificial propagation to supplement the natural seed supply. Spontaneous maturation and spawning of milkfish beginning at 5 years of rearing in floating net cages or concrete tanks coupled with improved egg collection technique have increased daily egg collection to a maximum of 3 million eggs and provided adequate volumes of eggs for mass fry production. Annual egg collection and number of spawnings were markedly higher in cage-reared stocks older than 9 years old than stocks less than 9 years old. Egg collection of tank-reared stocks were comparable to those collected in cages. As feed constitutes a major portion of the operating expenses for establishing and maintaining milkfish broodstock, further studies must be geared towards defining optimum dietary requirements and ration size for gonadal maturation and spawning. Also environmental manipulation studies must be conducted for year-round spawning. Developments in these areas should ensure the production of maximum numbers of high quality eggs and fry year-round.
Suggested CitationEmata, A. C., & Marte, C. L. (1993). Broodstock management and egg production of milkfish, Chanos chanos Forsskal.
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Baliao, Dan D.; Ticar, Romulo B.; Guanzon Jr., Nicolas G. (Taylor & Francis, 1986)The paper discusses the effect of stocking density and holding periods in stunting milkfish fingerlings in brackishwater ponds using twelve units of 144m<sup>2</sup> earthen ponds. With 15, 20, and 25 fingerlings/m<sup>2</sup> ...
Yolk resorption, onset of feeding and survival potential of larvae of three tropical marine fish species reared in the hatchery Bagarinao, Teodora (Springer Verlag, 1986)This paper provides basic early life-history information on milkfish (Chanos chanos), seabass (Lates calcarifer) and rabbitfish (Siganus guttatus) which may explain in part the observed differences in their survival ...
Histopathological response of milkfish Chanos chanos Forsskal fingerlings to potassium permanganate Cruz, Erlinda R.; Tamse, Catherine T. (Japanese Society of Fish Pathology, 1986)Static 96 h bioassays were conducted on milkfish fingerlings at concentrations ranging from 1.00 to 1.80 mg/l KMnO<sub>4</sub>. Histopathological analyses of gills, liver, and kidney tissues revealed significant changes ...