전자저널 > 전자저널 > Ecologically Sustainable Management of Short-necked Clam, Ruditapes philippinarum, on the Coast of Yeongi at Tongyeong, Korea

Ecologically Sustainable Management of Short-necked Clam, Ruditapes philippinarum, on the Coast of Yeongi at Tongyeong, Korea

Sang-Man Cho, Woo-Geon Jeong and Sang Jun Lee

Institute of Marine Industry & Department of Marine Biology and Aquaculture, College of Marine Science, Gyeongsang National University, Tongyoeng, 650-160, Korea

In order to develop the sustainable ecological management, short-necked clams, Ruditapes philippinarum, werecollected from Yoengi coast in Tongyoeng, Korea. The growth of the clam was estimated as: Lf =68.08·(1-e-0.145(t+0.324)) from ring radius composition of shell. Instantaneous co-efficiency of total mortality andnatural mortality were calculated as: 0.991/year and 0.494/year, respectively. The age of the clams from the firstcapture was estimated to be 3.28. The total biomass was estimated to be 212 MT in the fisheries area (6.4 ha).Applied by these parameters, the annual recruit biomass and the current yield per recruit were calculated to be649.5 individual/m2 and 0.7 g/m2, respectively. The current fishing intensity was much lower for maximumsustainable yield and acceptable biological catch. Although higher yield per recruit could be achieved byincreasing fishing intensity, it is favorable to retain the current fishing intensity because of the unique fishingattitude on Yeongi coast in Tongyoeng, Korea.

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