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http://dx.doi.org/10.5657/kfas.2009.42.2.157

Estimation of the Ratio of Fin Weight to Body Weight of Sharks for the Korean Tuna Longline Fishery in the Eastern Pacific Ocean  

An, Doo-Hae (Distant Water Fisheries Resources Division, National Fisheries Research and Development Institute)
Kwon, You-Jung (Department of Fisheries Physics, Graduate School, Pukyong National University)
Moon, Dae-Yeon (Distant Water Fisheries Resources Division, National Fisheries Research and Development Institute)
Hwang, Seon-Jae (Distant Water Fisheries Resources Division, National Fisheries Research and Development Institute)
Kim, Soon-Song (Distant Water Fisheries Resources Division, National Fisheries Research and Development Institute)
Publication Information
Korean Journal of Fisheries and Aquatic Sciences / v.42, no.2, 2009 , pp. 157-164 More about this Journal
Abstract
The National Fisheries Research and Development Institute (NFRDI) conducted a circle hook experiment to compare the catch rates of target and bycatch species between J hook and circle hooks in the tuna longline fishery of the Eastern Pacific Ocean, which is located between $9^{\circ}13 and $126^{\circ}00. Sampling was conducted from September 20 to October 23, in 2006. In this survey, we collected shark data to obtain the ratio of fin weight to body weight of sharks. Overall, 413 sharks belonging to 9 species were caught on 62,464 hooks. The total weight of the sharks caught was 11,093 kg. The ratio of wet fin weight to body round weight of sharks by species ranged from 3.7% to 7.7%, while the mean was 5.4%. The total ratio of wet fin weight to the dry fin weight of sharks ranged 0.38 to 0.70 and the mean value was 0.53. The ratio of dry fin weight to the body round weight of the sharks was estimated to be 2.86%.
Keywords
Shark fin; Fin ratio; Wet weight; Dry weight; Pacific Ocean;
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