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http://dx.doi.org/10.3796/KSFT.2009.45.2.122

Size selectivity of gill net for female snow crab, Chionoecetes opilio  

Park, Chang-Doo (Fisheries Resources Division, West Sea Fisheries Institute, NFRDI)
An, Heui-Chun (Fisheries Engineering Division, National Fisheries Research & Development Institute)
Cho, Sam-Kwang (Fisheries Resources Division, West Sea Fisheries Institute, NFRDI)
Bae, Bong-Seong (Fisheries Resources Division, East Sea Fisheries Institute, NFRDI)
Park, Hae-Hoon (Fisheries Resources Division, East Sea Fisheries Institute, NFRDI)
Bae, Jae-Hyun (Fisheries Engineering Division, National Fisheries Research & Development Institute)
Kim, Hyun-Young (Fisheries Resources Division, West Sea Fisheries Institute, NFRDI)
Publication Information
Journal of the Korean Society of Fisheries and Ocean Technology / v.45, no.2, 2009 , pp. 122-127 More about this Journal
Abstract
A series of fishing experiments was carried out in the eastern coastal waters of Korea from January, 2002 to March, 2003, using gill nets of different mesh sizes (m 180, 210, 240, 270 and 300 mm) to determine the size selectivity of gill net for female snow crab, Chionoecetes opilio. The catch of experimental gears was mostly snow crab (97%), Chionoecetes opilio. The maximum carapace length (RL) of each female snow crab caught in the fishing experiments was measured. The master selection curve was estimated by applying the extended Kitahara s method. The selection curve showed that the gill nets of larger mesh size allowed more female crabs of small carapace size to escape. The optimum values of RL/m for 1.0 of retention probability was 0.563 and RL/m was estimated to be 0.249, 0.290, 0.319, 0.344 and 0.367 when the retention probability were 0.1, 0.2, 0.3, 0.4 and 0.5, respectively.
Keywords
Chionoecetes opilio; Snow crab; Gill net; Selectivity; Selection curve; Kitahara's method;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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