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Sustainable Management Measures for Blue Swimming Crab (Portunus pelagicus) Fishery: A case study in Sikao District, Trang Province, Thailand

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  • Swimming blue crab fishery is a mainstay of small-scale fishers in Sikao District. Two fishing gears are mainly employed, i.e., crab gill net (CGN) and crab trap (CT). The socio-economic conditions of the fishers are varied to fishing ground, type of fishing gear and marketing. The average total cost of CGN was higher than CT due to fishing grounds of CGN are further than those of CT and maintenance including replacement costs of CGN were rather high. However, the total revenue of CGN was higher than CT. The catches composition of CT mainly is small size crabs, thus the fishers have to boil and picking the meat for value added. In contrast, the catches composition of CGN mainly is medium and large size. Thus, it may conclude that the marketbale size of crab can be found in the deeper sea areas. The average catch per trip is varied to seasons, the catch in rainy season was higher than dry season significantly. At present, the management of crab fishery is not well established. Any proper management measure did not apply to this fishery and results to the declining of swimming blue crab stock in the study area. Thus, in order to sustain crab fishery in Sikao District, appropriate management measures should be urgently implemented. The recommended measures are mesh size limit, size of crab to be caught, limit amount of fishing effort of individual fisher, and seasonal and area closure. However, all of the measures should be based on fishery biology of the crab and livelihood of small-scale fishery households.
  • Keywords: Fisheries Management for Coastal Fisheries, Management measures, swimming blue crab fishery in Thailand, Fisheries Economics
  • Keywords: Fisheries Management for Coastal Fisheries, Management measures, swimming blue crab fishery in Thailand, Fisheries Economics
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  • Nitiratsuwan, Thongchai, Kungwan Juntarashote. 2004. Sustainable Management Measures for Blue Swimming Crab (Portunus pelagicus) Fishery: A case study in Sikao District, Trang Province, Thailand. Peer Review: No. In: Proceedings of the Twelfth Biennial Conference of the International Institute of Fisheries Economics & Trade, July 20-30, 2004, Tokyo, Japan: What are Responsible Fisheries? Compiled by Ann L. Shriver. International Institute of Fisheries Economics & Trade, Corvallis, Oregon, USA, 2004. CD ROM. ISBN 0-9763432-0-7
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