Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Variation of Body Composition and Survival Rate According to Spawning of Pacific Oyster, (Crassostrea gigas) in Gamak Bay

가막만 양식 굴, Crassostrea gigas의 산란에 따른 체조성과 생존율 변화

  • Kim, Chul-Won (South Sea Fisheries Research Institute, National Fisheries Research and Development Institute(NFRDI)) ;
  • Kim, Eung-O (South Sea Fisheries Research Institute, National Fisheries Research and Development Institute(NFRDI)) ;
  • Jeong, Hee-Dong (South Sea Fisheries Research Institute, National Fisheries Research and Development Institute(NFRDI)) ;
  • Jung, Choon-Goo (South Sea Fisheries Research Institute, National Fisheries Research and Development Institute(NFRDI)) ;
  • Park, Min-Woo (Division of Aquaculture Management, NFRDI) ;
  • Son, Sang-Gyu (South Sea Fisheries Research Institute, National Fisheries Research and Development Institute(NFRDI))
  • 김철원 (국립수산과학원 남해수산연구소) ;
  • 김응오 (국립수산과학원 남해수산연구소) ;
  • 정희동 (국립수산과학원 남해수산연구소) ;
  • 정춘구 (국립수산과학원 남해수산연구소) ;
  • 박민우 (국립수산과학원 양식관리과) ;
  • 손상규 (국립수산과학원 남해수산연구소)
  • Published : 2009.10.31
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Abstract

In 2007, 43.5% mortality of the cultured oyster population occurred in Gamak Bay. Mortality rapidly increase in September and peak in October. To prevent future mass-mortality event, we investigated spawning and variation of oyster body composition. The main spawning period of culture oyster occurred from August to September. Condition index and body composition (protein and glycogen) appeared to be influenced by the spawning activity. Condition index and glycogen content in September were lowest (13.5% and 5.6 mg/g, respectively). However, protein, lipid and glycogen contents did not rapidly recover after the spawning activity. The data indicates that mass-mortality of cultured oysters in Gamak Bay may be due to deteriorated health, spawning activity, stress of the high water temperature and decreasing food resources.

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