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Regional Variations in Pacific Oyster, Crassostrea gigas Growth and the Number of Larvae Occurrence and Spat Settlement along the West Coast, Korea

서해 지역별 굴 Crassostrea gigas 성장 특성, 유생 출현량 및 채묘율

  • Lim, Hyun Jeong (West Sea Fisheries Research Institute, National Fisheries Research & Development Institute) ;
  • Back, Sang Ho (Korea Fisheries Resources Agency) ;
  • Lim, Mae Soon (Seosan Branch, Fisheries Management Office) ;
  • Choi, Eun Hee (West Sea Fisheries Research Institute, National Fisheries Research & Development Institute) ;
  • Kim, Su Kyoung (West Sea Fisheries Research Institute, National Fisheries Research & Development Institute)
  • 임현정 (국립수산과학원 서해수산연구소) ;
  • 백상호 (한국수산자원관리공단) ;
  • 임매순 (충청남도 수산관리과 서산사무소) ;
  • 최은희 (국립수산과학원 서해수산연구소) ;
  • 김수경 (국립수산과학원 서해수산연구소)
  • Received : 2012.09.14
  • Accepted : 2012.09.22
  • Published : 2012.09.30

Abstract

Due to the oil spill incident in December 2007, every facility of oyster culture was removed in western coast especially in Taean and Seosan. To restore oyster resources in Taean and Seosan, we brought oyster seeds from southern area and monitored their growth. In addition we monitored the culture environment throughout the year, and observed the number of oyster larvae and attached spats on collectors during summer. The factors of water environment were appropriate for oyster culture in both study area. The growth of shell height was larger in Uihang-ri, Taean than Jungwang-ri, Seosan. Spawning was more intensive in a short time in Jungwang-ri, Seosan than Uihang-ri, Taean. The number of oyster larvae and spats of collectors were much more in Jungwang-ri, Seosan than Uihang-ri, Taean. This study showed that transplantation of healthy oyster seeds from southern area can be a way of restoration of oyster resources in western coast. In addition, systematic approaches are necessary by building a better understanding of regional characteristics to restore and enlarge the oyster culture farms in western coast. In summary Uihang-ri, Taean will be appropriate for cultivation farms and Jungwang-ri, Seosan for seedling grounds to increase oyster culture productivity.

Keywords

References

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