Genetic Analysis of Adult and Larval
Blue Crabs in Chesapeake Bay
This project is among the first to employ PCR techniques to investigate recruitment. In fact, it is one of the first applications of this advanced molecular technique to any marine species. We feel that elucidation of recruitment processes in general will be greatly advanced by the overall scheme outlined here. Of special interest to us, is the relationahip that may exist between genetic estimates of population differentiation and that inferred from megalopal abundance and physical transport models. Data on adult crabs will advance our understanding of stock separation and lead to more effective management plans. Data on genetic variation in megalopal populations will be useful in several respects including the extent of migration in planktonic stages, fidelity of megalopae to natal estuaries and subsequent migration within Chesapeake Bay. All of these issues have direct management implications.
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Robert Chapman
Johns Hopkins University
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