Abstract:
This study was done in order to investigate the mating success between two mud crab
species in Malaysia which is S. olivacea and S. tranquebarica , determine the duration of
mating occur after intermoult male been place together with new moulted female,
determine the duration of mating process activity and also to record of mating process.
Both brood stocks were bought from the market place at Setiu Wetland. When female
crabs in premoult condition, it will transfer into the culture tank with the intermoult male
to face crossbreeding process. This crossbreeding was divided into two type which are
intraspecies crossbreeding and interspecies crossbreeding. As a result, the percentage of
success mating for intraspecies crossbreeding S. olivacea was 60%, while for S
. tranquebarica there were 50% was succeed to mate. On the other side, the percentages
of success mating for interspecies crossbreeding was 40% pairs for male S. olivacea and
female S. tranquebarica while 30% was succeed for interspecies crossbreeding for male
S. tranquebarica and female S. olivacea. From the observation mud crab species mates
during the intermoult male find the moulted and female mud crab species did not show
apparent courtship behaviour.
