This study by Rider University examines the relative abundance and population structure (e.g., size structure, sex ratio) of adult blue crabs in Barnegat Bay as well as the temporal and spatial variation in aspects of the reproductive potential (e.g., sperm stores of both sexes, brood production of field-caught females) and movement patterns of adult crabs (with mark-recapture data). Mark-recapture data and direct counts of commercial crab traps (in selected locations) also provide information on the temporal and spatial extent of fishing effort (commercial and recreational) on adult blue crabs in the Bay.