Density and width-weight relationship of blue swimming crab (Portunus pelagicus) in Letman Waters, Southeast Maluku

Blue swimming crab (Portunus pelagicus) is a fishery commodity with fairly high selling value, both as local and an export commodity. The level of utilization trade blue crabs not matched by knowledge how to conserve these resources which can result in decrease resource stocks. Sampling was carried out November 2021 using selected random sampling method. density the male 94,118 ind/km2 female 58,824 ind/km2. results analysis width-weight relationship showed nature growth negative allometric b value 2.579.Keywords: density, relationship, crab, Letman