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http://dx.doi.org/10.5657/kfas.2002.35.4.380

Population Dynamics of Crangon hakodatei from Coastal Area of Geoje Island, Korea  

Choi Jung Hwa (Department of Marine Biology, Pukyong National University)
Kim Jung Nyun (Institute of Fisheries Sciences, Pukkyong National University)
Kim Sung Tae (South Sea Fisheries Research Institute, National Fisheries Research and Development Institute)
Cha Hyung Kee (Fisheries Resources Research and Management Division, National Fisheries Research and Development Institute)
Publication Information
Korean Journal of Fisheries and Aquatic Sciences / v.35, no.4, 2002 , pp. 380-385 More about this Journal
Abstract
The sand shrimp, Crangon hakodatei commonly occured in the southern coast of Korea. The population structure, growth, mortality, and size at sexual maturity of C. hakodatei were examined by the samples collected from the coastal area of Geoje Island, Korea from October 2000 to October 2001. For estimation of parameters of growth and mortality, monthly length-frequency data were analysed by ELEFAN. Parameters of growth were estimated, using the modified yon Bertalanffy growth function model. The female grew faster and reached larger size at the same age than the male, There was a breeding season showing a peak in winter (January to february). Total mortality by length-converted catch curve was estimated at $3.10 yr^{-1}$, fishing mortality was $0.62 y^{-1}$ and natural mortality was $2.48 yr^{-1}$. The size at $50\%$ sexual maturity for the female ranged from CL 11.00 to 11.50 mm.
Keywords
Crangon hakodatei; Growth; Breeding season; Mortality; Size at sexual maturity;
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