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http://dx.doi.org/10.5657/KFAS.2018.0286

Species Composition and Catch of Korean Tuna Longline Fisheries in the Indian Ocean from 2010 to 2015  

Ku, Jeong Eun (Distant Water Fisheries Resources Division, National Institute of Fisheries Science)
Lee, Sung Il (Distant Water Fisheries Resources Division, National Institute of Fisheries Science)
Kim, Doo Nam (Distant Water Fisheries Resources Division, National Institute of Fisheries Science)
Publication Information
Korean Journal of Fisheries and Aquatic Sciences / v.51, no.3, 2018 , pp. 286-297 More about this Journal
Abstract
We analyzed scientific observer data to identify species composition and catch trends of Korean tuna longline fisheries in the Indian Ocean. The data were collected by Korean scientific observers onboard Korean tuna longline fishing vessels in the Indian Ocean from 2010 to 2015. The observers identified 94 species including 5 tuna, 6 billfish, 11 shark, 7 other fish, 5 seabird and 1 sea turtle. Albacore tuna Thunnus alalunga and southern bluefin tuna Thunnus maccoyii were the dominant tuna species, and swordfish Xiphias gladius were the most commonly captured billfish. During the survey periods, 87 seabirds were incidentally bycaught. Black-browed albatross Diomedea melanophris was the dominant seabird species in bycatch, especially in 2010. Cluster analysis showed difference in the species composition of catches between the eastern and western Indian Ocean.
Keywords
Scientific observer; Korean tuna longline fishery; Indian ocean; Species composition;
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