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

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

Hyun Jeong Lim, Sang Ho Back, Mae Soon Lim, Eun Hee Choi and Su Kyoung Kim

West Sea Fisheries Research Institute, National Fisheries Research & Development Institute, Incheon 400-420, Korea Korea Fisheries Resources Agency, Busan, 612-020, Korea Seosan Branch, Fisheries Management Office, Chungcheongnam-do, Daesan, 356-870, K

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.

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