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Cpue Standardization And Catch Estimate Of Blue Shark By Taiwanese Large-Scale Tuna Longline Fishery In The North Pacific Ocean, Wen-Pei Tsai, Chi-Lu Sun, Kwang-Ming Liu, Shyh-Bin Wang, Nancy C. H. Lo
Cpue Standardization And Catch Estimate Of Blue Shark By Taiwanese Large-Scale Tuna Longline Fishery In The North Pacific Ocean, Wen-Pei Tsai, Chi-Lu Sun, Kwang-Ming Liu, Shyh-Bin Wang, Nancy C. H. Lo
Journal of Marine Science and Technology
The blue shark, Prionace glauca, is a pelagic species with a circum-global distribution in tropical to temperate waters. It is the top by-catch shark species for the Taiwanese large-scale tuna longline (LTLL) fishery. However, its population status in the North Pacific Ocean is still little known. In the present study, the blue shark catch and effort data from observers' records of Taiwanese LTLL fishing vessels operating in the North Pacific Ocean from 2004 to 2012 were analyzed. Due to the large percentage of zero blue shark catch, the catch per unit effort (CPUE) of blue shark, as the number of …