Changes in Operational Characteristics of the Korean Tuna Longline Fishery in the Pacific Ocean
하영신·박희원·이성일1*
국립수산과학원 원양자원과, 1국립부경대학교 해양생산시스템관리학부
This study examined the changes in the operational characteristics of the Korean tuna longline fishery in the Pacific Ocean from 1971 to 2023 using fishery statistics and logbook data reported by fishermen. Changes in catch, effort, and catch per unit effort (CPUE) were mapped and analyzed by decade and target species such as bigeye (BET), yellowfin (YFT) and albacore (ALB) tunas. In addition, annual changes in used hooks, baskets, and hooks between floats (HBF) were analyzed to investigate the changes in fishing strategies of the Korean tuna longline fishery in the Pacific Ocean. In the 1970s and 1980s, Korean tuna longliners targeted not only BET and YFT but also ALB. However, since the 1990s, they have mainly targeted BET and YFT. As target species changed, HBF increased from less than 10 in the mid-1980s to 17-25 in the mid-2010s. In the 1970s and 1980s, Korean tuna longliners operated throughout the Pacific Ocean; however, since then, as the target species have changed, their fishing grounds have shifted to tropical areas. The findings of this study provide a foundation for enhancing the efficiency and sustainability of the Korean tuna longline fishery in the Pacific Ocean.
Korean tuna longline fishery, Operational characteristics, Fishing strategy, Catch per unit effort, Hooks between floats