Abstract
An experiment of mud crab, Scylla serrata with single factor design was set up at the Marine and Aquaculture Research Unit of James Cook University, Queensland, Australia for 26 days in order to improve the hatchery technique, i.e development and survival of larvae using different rotifer densities. The mud crab larvae were reared at 0, 5, 10, 20, 40, and 60 ml-1 rotifer densities. Survival and development increased with the increase of rotifer density. At higher rotifer density situation, the highest 35-40% survival of Z-I stage was achieved at 40-60 ml l-1. Higher density beyond 40 ml l-1 resulted in higher mortality which needs further investigation. Moreover, rotifer was found as suitable diet for Z-I and Z-II larvae. From Z-III onwards, rotifers were found not suitable for the larval survival and development of mud crab larvae.
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