Management of many decapod crustacean fisheries operates with the underlying assumption that sperm not a limiting factor in the exploited population. Regulations protecting ovigerous females and setting minimum size limits have arisen based on the view that reproductive success depends primarily on female biology(e.g. size-at-maturity and size-based fecundity). As a result, decapod fisheries tend to preferentially remove males at harvestable sizes while allowing reproductive females to accumulate in the population(Cobb and Wang. 1985: Smith and Jamieson. 1991). This can ultimately limit the number of large males while simultaneously increasing the number oflarger females in the pop- ulation(Miller. 1976: Pollock, 1986: Smith and Jamieson, 1991