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http://dx.doi.org/10.3796/KSFT.2013.49.4.440

Estimations on population ecological characteristics of small yellow croaker, Larimichthys polyactis by the drift gillnet fishery in Korean waters  

Lee, Jong Hee (Fisheries Resources Research Division, NFRDI)
Seo, Young Il (Fisheries Resources Research Division, NFRDI)
Oh, Taeg Yun (Fisheries Resources Research Division, NFRDI)
Lee, Dongwoo (Fisheries Resources Research Division, NFRDI)
Publication Information
Journal of the Korean Society of Fisheries and Ocean Technology / v.49, no.4, 2013 , pp. 440-448 More about this Journal
Abstract
Estimations on population ecological parameters of the small yellow croaker, Larimichthy polyactis in Korean waters, were calculated using catch data based on coastal and offshore drift gillnet fishery and biological data from 2010 to 2012. The population ecological parameters included survival rate, instantaneous coefficient of natural and fishing mortality and age/length at first capture. The survival rate (S) of the small yellow croaker was estimated to be 0.20 from catch curve method. The instantaneous coefficient of natural mortality (M) was estimated to be 0.46/year with Alverson and Carney method. The instantaneous coefficient of total mortality (Z) was 1.611/year, used to be transformed the survival rate and the instantaneous coefficient of fishing mortality (F) were 1.153/year. The length at first capture ($L_c$) was 19.1cm by Pauly method, and the age at first capture ($t_c$) was 1.303 years of the small yellow croaker by the coastal and offshore drift gillnet fishery.
Keywords
Small yellow croaker; Larimichthys polyactis; Population ecological characteristics; Drift gillnet fishery; Length at first capture ($L_c$);
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