Fishery situation and management proposal for Indian squid (Loligo duvauceli) in the Gulf of Thailand
1997
Mala Supongpan | Sinoda, Masatoshi | Karuna Kongmuag (Department of Fisheries, Bangkok (Thailand). Bangkok Marine Fisheries Development Center)
Monthly length frequency of indian squid Loligo duvauceli was taken from a squid light luring fishing boat at Lang Suan, Chumporn Province during March 1991 through/February 1992 to assess the present fishery situation. Pauly's Empirical formula was used to estimate the natural mortality (M), Jone's Length-based Cohort Analysis and Length based Thompson and Bell's Analysis were used to assess the present stock of the Indiansquid (Loligo duvauceli) in the Gulf of Thailand as well as the situations of fisheries during the two proposal periods of closed areas and seasons. Management regulations are proposed for the Indian squid to be sustainable development as (1) The squid light luring fishing gear should be reduced stepwise by about 20 percent of the present level. (2) The existing fisheries laws and regulations such as mesh size for capturing squid by light luring fishing gear and fishing area within 3 km from shoreline of all types of fishing gear except non-motorized gears should be fully exhaustive. (3) During the period of closed area and season, 15 Februaty to 15 May annually at Prachub Kiri Khan, Chumporn and Surat Thani Provinces, the squid light luring fishing gears should be prohibited stepwise from a large scale boat. (4) To decrease the fishing rate of light luring fishing gear by decreasing of light intensity is effective, it is possible that the intensity can be easily managed at the port and on the sea. (5) To make stock assessment of squid with high accuracy, the fisheries statistics should be substantial.
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