Abstract:
The study objective are to investigate size at maturity of S. olivacea, to determine
relationships between carapace width (CW) (cm) - body weight (BW) (g) of S. olivacea
and to determine the size distribution of the mud crab, S. olivacea from the Kuala Kedah
coastal water, Kedah conducted to deceive the size at maturity (CW so) of mud crab. The
study area is Kedah coastal water. The type of mudcrab that had been studied is Scylla
olivacea from Kedah coastal water. The number of crabs that were collected since July
2011 to December 2011 in determining the size at maturity is 821 for both sex and 371
males mud crab and 450 females mud crab. The size at maturity (CWso) was determine
for both male and female with the presence of both mature and immature crab. The size
at maturity recorded in this case was 8.8cm CW for female and 7.5cm for male crab.
From this study sex ratio for S. olivacea is 1 :0.82(female: male) and it also show that the
crab carapace width was increase more than their body weight.
