แปลสัมมนาThe blue swimming crab (Portunus pelagicus Linnaeus, 1758) is an important commercial resource for small-scale fisheries throughout the Indo-West Pacific from Africa to India, South-east Asia and Australia [1-3]. In Thailand, they are a major source of livelihood for small-scale fishers in many parts of the Andaman Sea and Gulf of Thailand [4]. The production of blue swimming crab in Thailand during 2005 was approximately 3,000 metric tons [5]. However, in 2008 exports fell rapidly