Optimum stocking density and tank size for larval rearing of the grouper, Epinephelus coioides
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The effect of stocking of stocking density and tank size on early growth and survival of grouper, Epinephelus coioides (=suillus) larvae were determined. In one experiment, larvae were stocked in 500L tanks at densities of 5, 10, 20 and 30 per liter and fed rotifers at 15 ind/mL. After 21 d, larvae attained best growth (9.6 mm) and highest survival (32.2%) at 20/L. In another experiment, larvae were stocked at 30/L in 40 L, 200 L and 500 L circular fiberglass tanks. Survival was highest in 500 L (22.3%) and lowest in 40 L tanks (0.5%), but larvae in 200 L tanks were larger (8.2 mm total length, 1.5 mg dry weight) on day 21. Thus in small tanks, 20 larvae/L is the optimum stocking density. In larger tanks of 500 L, 30 larvae/L is feasible.
Duray, M. N., Estudillo, C. B., & Alpasan, L. G. (1997). Optimum stocking density and tank size for larval rearing of the grouper, Epinephelus coioides. In Y. Zhou, H. Zhou, C. Yao, Y. Lu, F. Hu, H. Cui, & F. Din (Eds.), The Fourth Asian Fisheries Forum: Proceedings of the Fourth Asian Fisheries Forum, Beijing, 16-20 October 1995 (pp. 48-52). Makati City, Philippines: Asian Fisheries Society.
PublisherAsian Fisheries Society
This research was partially supported by the Fisheries Sector Program under Study Code 6900-400-60. We wish to thank Drs. Teodora Bagarinao, Grace de Jesus and Felix Ayson for critically reading the first draft of the manuscript and for the staff of Finfish Hatchery of SEAFDEC AQD for their assistance.
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