통영 연기해역의 바지락자원 적정관리에 관한 연구

Abstract

In order to develop the sustainable ecological management, short-necked clams, Ruditapes philippinarum, are collected from Yoengi coast at Tongyoeng, Korea. The growth of clam was estimated as: Lf = 68.08·(1-e-0.145(t+0.324)) from ring radius composition of shell. Instantaneous coefficient of total mortality and natural mortality were calculated as: 0.991/year and 0.494/year, respectively. The age at first capture was estimated to be 3.28 year. The total biomass was estimated to 212 MT in the fisheries area (6.4 ha). Applied by these parameters, the annual recruit biomass and the current yield per recruit (Y/R) was corresponded to 649.5 individuals/m2 and 0.7 g/m2, respectively. Although the current fishing intensity was much lower than that for maximum sustainable yield (MSY) and acceptable biological catch (ABC) and higher yield per recruit could be achieved by increase fishing intensity, it is favorable to retain the current fishing intensity becauseof the unique fishing attitude on Yeongi coast at Tongyoeng, Korea.