전자저널 > 전자저널 > Ecological Study of Shortnecked Clam Ruditapes philippinarum from the Jindu Coast of Hansan Island, Korea

Ecological Study of Shortnecked Clam Ruditapes philippinarum from the Jindu Coast of Hansan Island, Korea

Sang-Man Cho and Woo-Geon Jeong

Institute of Marine Industry and Department of Marine Biology and Aquaculture, College of Marine Science, Gyeongsang National University, 445 Inpyeong, Tongyeong, Gyeongnam 650-160, Republic of Korea

In order to estimate the ecological parameters of the population, short-necked clams, Ruditapes philippinarum, were collected from Jindu coast at Hansan Island, from April to December in 2005. The growth of the clam was estimated by von Bertalanffy growth model and each parameters were obtained from a nonlinear regression as L∞ = 48.8 mm, k = 0.28 and t0 = -0.88 (R2 = 0.994). Instantaneous coefficient of total mortality (Z) and fishing mortality (F) was calculated to be 0.8614/yr. and 0.6122/yr, respectively. The age at the first capture was estimated to be 2.88 year. Using the present parameter for clam fishing, the yield-per recruit (Y/R) was estimated to be 3.44g. Although the maximum Y/R was obtained under the parameters (tc = 3.48 yr. and F = 0.9295/yr), it is favorable to maintain the current fishing effort considering the annual fluctuation of the parameters.

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