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http://dx.doi.org/10.3796/KSFT.2011.47.4.403

Fishing characters of skate ray, Raja pulchra by the offshore longline fishery in Heuksan-do, Korea  

Jo, Hyun-Su (Fisheries Resources and Environment Division, West Sea Fisheries Research Institute, National Fisheries Research & Development Institute)
Hwang, Hak-Jin (Korea Fisheries Resources Agency)
Kwon, Dae-Hyeon (Fisheries Resources and Environment Division, West Sea Fisheries Research Institute, National Fisheries Research & Development Institute)
Jeong, Gyeong-Suk (Fisheries Resources and Environment Division, West Sea Fisheries Research Institute, National Fisheries Research & Development Institute)
Choi, Kang-Ho (Fisheries Resources Research and Management Division, National Fisheries Research & Development Institute)
Cha, Byung-Yeul (Fisheries Resources and Environment Division, West Sea Fisheries Research Institute, National Fisheries Research & Development Institute)
Im, Yang-Jae (Fisheries Resources and Environment Division, West Sea Fisheries Research Institute, National Fisheries Research & Development Institute)
Publication Information
Journal of the Korean Society of Fisheries and Ocean Technology / v.47, no.4, 2011 , pp. 403-410 More about this Journal
Abstract
Catches, CPUE, fishing season, disc width composition and fishing ground were studied to rebuild skate ray, Raja pulchra resource by the offshore longline fishery in Heuksan-do, Korea. Annual catches and CPUE of skate ray were increased from 2003 to 2010 (CPUE: from 2007 to 2010) continuously. The main fishing season of the skate ray was from December to next May. Disc width at 50% maturity for Raja pulchra by sex were estimated to be 65.83cm, 57.01cm by female and male respectively. The range of disc width was 22.3-112.0cm and the average disc width was 66.9cm, 60.0cm by female and male of Raja pulchra respectively during 2007-2010. Annual average of disc width of female skate ray was decreased from 2007 to 2010. The fishing grounds were formed from the coastal water off Hong-do to the coastal water off Gyeogyeolbiyeol-do, Korea. The center of fishing ground in October was formed in the northwestern coastal water off Gyeogyeolbiyeol-do and separated from that of the other months.
Keywords
Raja pulchra; Longline fishery; Catch; Group maturity; Fishing ground;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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