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학제간연구 과학기술학 뇌인지과학 기술정책 기타 복합학

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한국수산해양기술학회(구한국어업기술학회) 수산해양기술연구 수산해양기술연구 제50권 제1호
발행연도
2014.1
수록면
1 - 11 (11page)

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To compare the catches made using gillnets, trammel nets, and gillnets with supporting lines, several experiments were conductedwith commercial vessels near Uljin and Pohang in Eastern Korea between July 2010 and May 2011. Two sets of 13 differentnets were used, including 5 panels of gillnets and trammel nets each with stretched mesh sizes of 7.6, 9.1, 10.6, 12.1, and 13.6cm and 3 panels of gillnets with a mesh size of 9.1 cm with supporting lines with different line spacing. The outer (stretched)mesh size of the trammel nets measured 51.5 cm. The target fishes of the fishing nets were various types of flounders. The catchrate of flounders was 50.7% of the total catch in weight. The total catch for all nets was 443.8 kg. The predominant species waspointhead flounder (Cleisthenes pinetorum). The total catch by trammel nets was 1.4 times that of the comparable gillnets. Butmore pointhead flounder were caught by gillnets than by trammel nets, though there was no significant difference. Fishermencatching the pointhead flounder in Korea said that there was no need to use trammel net to catch it; this was an unexpectedfinding compared to the findings of other flounder fisheries. The amounts of roughscale sole, brown sole, and blackfin floundercaught by trammel nets were greater than those caught by gillnets. The mean lengths (standard deviation) of blackfin flounder,pointhead flounder, brown sole, and roughscale sole were 21.0 (4.57), 22.9 (3.40), 24.7 (4.90), and 28.3 (5.43) cm, respectively;there were significant differences in mean length (p < 0.00001). Therefore, in order to catch flounder efficiently, the fishing netsand mesh size should be chosen according to the target species. One advantage of using supporting lines is that it prevents breakageby strengthening the material especially when utilized on a rough bottom. Catch by using gillnet with supporting lines wasnot greater than that by using trammel net for the conservation of fisheries resources.
#Species composition #Catch efficiency #Flounders #Gillnet #Trammel net

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참고문헌 (10)

참고문헌 신청
Cho YB / 2000 / A study on the selectivity of the mesh size in trammel net for Cynoglossidae / Bull. Korean Soc Fish Tech 36 : 89 ~ 95 google schola NFRDI (National Fisheries Research & Development Institute) / 2007 / The report for examination of regulation of catch prohibition by fisheries resources : 1 ~ 327 google schola Park HH / 2011 / Selectivity of Korean flounder (Glyptocephalus stelleri) by gillnets and trammel nets using an extension of SELECT for experiments with differing mesh sizes google schola Wanner GA / 2010 / Comparison of green and white mesh trammel nets and gill nets to assess the fish community was done in a large river / North Am J Fish Management 30 : 12 ~ google schola 김성훈 / 2002 / 가자미 삼중자망의 망목 선택성 / 한국어업기술학회지 38 (2) : 91 ~ 100 google schola

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