Catching efficiency of biodegradable trap for swimming crab (Portunus trituberculatus) in the western sea of Korea

Kim, In-Ok; Lee, Gun-Ho

doi:10.3796/ksft.2014.50.3.262

Cited by 6 publications

(1 citation statement)

References 13 publications

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“…혼획과 비목표종의 투기가 많이 발생하게 된다 (Alverson et al, 1994;Kelleher, 2005 (Kim et al, 2011) 생분해성 통발의 어 획성능 (Bae et al, 2010;Kim and Lee, 2014), 심해 통 발의 어획 (Park and Bae, 2011), 붕장어 그물통발에서 혼획 및 투기 실태 (Cha et al, 2010), 붉은대게 통발에서 유령어업 (Watanabe, 2005), 통발의 탈출장치 (Boutson et al, 2009;Kim et al, 2010;Morris et al, 2011), 그 리고 망목 선택성과 관련하여 붉은대게 통발 (Jeong et al, 2000), 고둥통발 (Park et al, 2007;Park et al, 2013…”

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Bycatch and discards of the whelk trap in the Uljin waters, East Sea

H¹,

Bae²,

Park³

et al. 2014

Journal of the Korean society of Fisheries Technology

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Experiment was set up to analyze bycatch and discards situation including snow crap Chionoecetes opilio of whelk trap. Four types of trap were used: drum type trap with PE net; drum type trap with PBS net; cylinder type trap with PE net; and cylinder type net with PBS net. Three funnels were attached in drum type trap and two funnels were used in cylinder type trap. A fleet of traps was consisted with one hundred traps. 25 traps of each type were set on a line in repeated sequence.Field experiments were conducted with 6 fishing operations in the Uljin waters, East Sea in July 2014. Catch of target whelks were 173,261 g and catch rate was 48.7% of total catch, while bycatch were 182,571 g, 51.3% of tatal catch. The catch rate of bycatch was 2.6% higher than that of target catch. Bycatch weight of snow crap was the highest as 142,987 g and formed about 40.2% of total catch, followed giant octopus, Enteroctopus dofleini, 31,762 g (8.9%). Bycatch rate of cylinder type trap was 2.3 times higher than that of drum type trap. Discard rate (discard/(discard+landing)) was 43.6%. Discard rate was the highest at cylinder type trap with PBS net as 63.1%, followed cylinder type trap with PE net as 47.9%, drum type trap with PE net as 33.4%, the lowest at drum type trap with PBS net as 22.1%.

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