Overview of Tuna Purse Seine Fisheries by M.V.SEAFDEC in the Eastern Indian Ocean
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Tuna purse seine surveys in the Eastern Indian Ocean have been conducted by MV SEAFDEC of the Training Department of SEAFDEC since 1993. There were 87 fishing operations. The total catches was 1,945.55 tons with average catch 6.53 tons/ fishing days. Catch composition was consisted of skipjack tuna, the most dominant specie caught at 65.56 %, followed by yellowfin tuna at 20.26%, bigeye tuna at 12.82% and other species at 1.36% respectively. The size range of skipjack tuna, yellowfin tuna and bigeye tuna were within range between 31-80, 20-136, 31-122 cm FL. The relative length-weight was determined using allometric equation for skipjack tuna (W=0.000006L3.3067), yellowfin tuna (W=0.00003L2.9175) and bigeye tuna (W=0.00001L3.1699)
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Scientific Report on Stock Assessments of Yellowfin Tuna (Thunnus albacares), Bigeye Tuna (Thunnus obesus) and Skipjack Tuna (Katsuwonus pelamis) in Sulu and Sulawesi Seas by ASPIC* *A Stock Production Model Incorporating Covariates Unknown author (Southeast Asian Fisheries Development Center, 2017-11)Results of stock assessments should be looked at with caution because of following reasons, i.e., (a) Stock assessments (YFT: yellowfin, BET: bigeye and SKJ: skipjack tuna) in the SSS water, may not be meaningful because ...
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