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http://dx.doi.org/10.3796/KSFT.2010.46.4.281

Mesh selectivity of monofilament and multifilament nylon gill net for Marbled sole (Pleuronectes yokohamae) in the western sea of Korea  

Kim, In-Ok (Aquaculture Industry Division, West Sea Fisheries Research Institute, National Fisheries Research & Development Institute)
Park, Chang-Doo (Fisheries System Engineering Division, National Fisheries Research & Development Institute)
Cho, Sam-Kwang (Fisheries System Engineering Division, National Fisheries Research & Development Institute)
Kim, Hyun-Young (Fisheries Resources Enhancement Center, National Fisheries Research & Development Institute)
Cha, Bong-Jin (Fisheries System Engineering Division, National Fisheries Research & Development Institute)
Publication Information
Journal of the Korean Society of Fisheries and Ocean Technology / v.46, no.4, 2010 , pp. 281-291 More about this Journal
Abstract
To estimate the mesh selectivity of monofilament and multifilament gill net for Marbled sole, Pleuronectes yokohamae, the field testes were carried out 12 times with five different mesh sizes (86.6, 101.0, 121.2, 137.7, 151.5mm) in the western sea of Korea, 2007-2009. The master curve of selectivity was estimated by the extended Kitahara's method. In the field testes, the total number of species and catch were 26 and 987, respectively. The catch number of marbled sole was 728 and occupied 73.8% in total catch. The optimum values of l/m for 1.0 of retention probability in monofilament and multifilament gill net were estimated 0.288 and 0.307, respectively and l/m was estimated to be 0.189, 0.203, 0.213, 0.222 and 0.230 in case of monofilament gill net and 0.171, 0.191, 0.205, 0.216 and 0.227 in case of multifilament gill net when the retention probability were 0.1, 0.2, 0.3, 0.4 and 0.5, respectively. The 0.5 selection range of multifilament gill net was wider about 1.5 times than that of monofilament gill net according as multifilament gill net was 0.216 and monofilament gill net was 0.148. So the multifilament gill net has a low selectivity than that of the monofilament gill net. To estimate the optimum mesh size on first maturity length 19.5cm of marbled sole, the retention probability value of 0.1 was adopted in consideration of using the gill net for marbled sole at present. The optimum mesh size were estimated to be 103.2mm and 114.0mm in monofilament gill net and multifilament gill net, respectively, on first maturity length 19.5cm of marbled sole.
Keywords
Selectivity; Monomultifilament gill net; Marbled sole;
Citations & Related Records
Times Cited By KSCI : 8  (Citation Analysis)
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