전자저널 > 전자저널 > Stock Assessment and Management of Turban shell, Turbo (Batillus) cornutus Lightfoot, 1786 in Jeju Coastal waters, Korea

Stock Assessment and Management of Turban shell, Turbo (Batillus) cornutus Lightfoot, 1786 in Jeju Coastal waters, Korea

Dae-Hyeon Kwon, Dae-Soo Chang, Seung-Jong Lee, Jun-Ho Koo and Byung-Yeob Kim

Subtropical Fisheries Research Center, NFRDI, Jeju 690-192 Korea

Samples of Turbo (Batillus) cornutus Lightfoot, 1786 in Jeju Island were collected from September 2009 to May2010. Population ecological parameters and stock assessment of the turban shell were determined, based on the length and age composition data from 2000 to 2009 and ecological parameters. Instantaneous coefficient of total mortality (Z) of turban shell was estimated to be 2.2062/year. The estimated instantaneous coefficient of natural mortality (M) was 0.874/year. The age of turban shell at its first capture (tc) was 2.636 year. Yield-per-recruit were estimated under harvest strategies that based on Fmax, F0.1, F35%, and F40% was 10.44 g, 1.87 g, 6.53 g and 7.46 g.

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