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- W2553930570 abstract "Tuna fisheries in Sri Lanka are developing rapidly, with an ever-increasing offshore fishing fleet making more and more longer trips to offshore waters. Over 3,000 boats are now engaged in tuna fishing, among them about 1,700 boats of 32-60 ft in length operating in the offshore areas. The bigger boats with navigational and communication facilities are now venturing into international waters. Fishing effort extended through multi-day operations has increased from 11 % in 1994 to 57 % in 1996. Gillnets and longlines account for more than 95 % of the total fishing effort. The total production of large pelagic fish is in the range of 100,000-110,000 t, of which about 55,000-60,000 t is from offshore waters. The continuous expansion of the offshore fishing fleet and the extended area of operation has contributed to this increase. The average catch rate of the tuna fishing fleet operating in coastal waters is about 100 kg/fishing day, whereas for the offshore boats some variation of catch rates has been observed between fishing vessels of different sizes and operating in different offshore areas. The average catch rate for the offshore boats of 34-40 ft is about 250 kg/fishing day, but the boats of over40 ft which operate outside the EEZ have reported catch rates of 435 kg/fishing day. The annual average catch rates estimated for the industrial longline fleet have shown a decreasing trend in the past years. All species of tuna together contribute about 50 % of the catch of large pelagics from both coastal and offshore fishing. Among the tuna species, skipjack dominate both in coastal and offshore catches." @default.
- W2553930570 created "2016-11-30" @default.
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- W2553930570 date "1998-01-01" @default.
- W2553930570 modified "2023-09-26" @default.
- W2553930570 title "TUNA FISHERIES IN SRI LANKA: AN UPDATE" @default.
- W2553930570 hasPublicationYear "1998" @default.
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