Biological Aspects of blue Swimmer Crab (Portunus pelagicus) in Pomalaa Waters
Commodity crab fishery resources (Portunus pelagicus) which is locally call “bukkang suji” has been exploited to increase revenues and compliance with the animal protein of Pomalaa’s people widely. For the sake of preserving and to achieve sustainable management, an accurate information about the growth of local fisherman haul production and its crab size is needed. Direct observation to the crab haul conducted with the aim of describing the crab condition and crab resource availability in the study area to be reviewed biology aspect. he studies showed that during the observation all the haul crab size structure has a modus on lengthy class 54–56 mm, board 107–110 mm, thick 29.5–30.5, weight 80–89 gram. Relationships of crab length, width, thickness and weight indicated a positive correlation toward whole parameters. It means that the increasing of one parameter closely related to increasing the size of the other parameters. The growth pattern of caught crab (Portunus pelagicus) at Pomalaa sea is positively allometric with the b grade on 3.079 scale. The comparison of sex ratio between male and female crabs is 1:1.42, it means that crab sex ratio is in an unbalanced state.
Keywords: Crab (Portunus pelagicus), biologys aspect, Pomalaa