Shellfish Breeding and Hatchery Management (2+1)

10.2.5 Mating

Male and female crabs are found paired together continuously for days. During this period, the male would climb over the female and clasp her with his chelipeds and walking legs. The pair separated on the verge of precopulatory moult.

After the copulatory moult of the female, the male gently turn the female over on her back using chelipeds. The female unfolded her abdominal flap and held the male in position for the deposition of the spermatophores. The whole process will last for two days.