Not AvailableReproductive biology is central to biological science and an understanding of it is vital to proper animal management. Since marine invertebrates have representations in all phyla, some of them exclusively, their reproductive biology has been studied with the aim of extending the basic ideas over a wider phyletic and environmental range. Experimental studies on invertebrate reproduction in the past were limited to insects alone inasmuch as they formed the major agricultural pests. A proper control of them, however, entails a thorough knowledge of the sexual, reproductive and developmental biology.Not Availabl