The Korean Journal of Malacology (한국패류학회지)

The Malacological Society of Korea (한국패류학회)
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Study on natural short-necked clam, Ruditapes philippinarum, stocks in Yeongheung coast of Wando Island, Korea

완도 영흥지선 연안의 천연 바지락 자원에 대한 연구

  • Cho, Sang-Man (Department of Aquaculture and Aquatic Science, Kunsan National University) ;
  • Lee, Jong Hwa (Department of Aquaculture and Aquatic Science, Kunsan National University)
  • 조상만 (군산대학교 해양과학대학 해양생명과학과) ;
  • 이종화 (군산대학교 해양과학대학 해양생명과학과)
  • Received : 2012.05.29
  • Accepted : 2012.06.04
  • Published : 2012.06.30
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Abstract

In order to understand the effect of introduction of oyster rack culture on natural short-necked clam, Ruditapes philippinarum, stock, we investigated the status of natural clam stock prior to introduction of oyster rack culture at Yeongheung Coast of Wando Island. The growth equation of the clam was estimated as: $L_t=61.46{\cdot}(1-e^{-0.172(t+0.155)})$ from ring radius composition of shell. Instantaneous coefficient of total mortality and natural mortality were calculated as: 2.4087/year and 0.478/year, respectively. The age at first capture was estimated to be 2.55 year. The total biomass was estimated to 3.23 ton in the bed (0.8 ha). Applied by these parameters, the annual recruit biomass and the current yield per recruit (Y/R) was corresponded to $114.7individuals/m^2$ and $92.0g/m^2$, respectively. Maximum sustainable yield (MSY) was estimated 0.77 ton/year which was close to annual catches, 0.74 ton/year, in the area.

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References

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