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Ecophysiological Characteristics Changes in the Pacific Oyster, Crassostrea gigas, after Spawning Season in Off-bottom Culture
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  • Journal title : The Korean Journal of Malacology
  • Volume 28, Issue 3,  2012, pp.215-223
  • Publisher : The Malacological Society of Korea
  • DOI : 10.9710/kjm.2012.28.3.215
 Title & Authors
Ecophysiological Characteristics Changes in the Pacific Oyster, Crassostrea gigas, after Spawning Season in Off-bottom Culture
Kim, Su Kyoung; Choi, Eun Hee; Han, Hyun Seob; Lim, Hyun Jeong;
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The ecophysiological characteristics of the oyster Crassostrea gigas in Taean area, west coast of Korea, were investigated after main spawning season from September 2011 to January 2012 to confirm the recovery process of condition. The cupped oysters, from 4 different off-bottom culture areas were compared the gonad indices, histological analysis combined with measurement of RNA/DNA contents and ratios in gonad of each sex were undertaken. To evaluate the health condition of oyster after spawning, the RNA/DNA ratio in adductor muscle, fatness and condition index (CI) were used. The results showed that cupped oysters cultured in Uihang coastal area were different physiological aspects than other experiment areas, namely continuously decreasing RNA/DNA content and ratio in adductor muscle, lowest CI and fatness. Oysters cultured in Iwon Station 1 and 2 showed fast recovery in RNA/DNA, increase in fatness and CI during post-spawning stage until October rapidly and there after it decreased. Oysters in Shinduri showed rapidly decrease in fatness and CI until October. On the contrary to this factors, RNA/DNA ratio in adductor muscle increased as like protein until October. Partially spawning season could be observed until December in Shinduri and Iwon Station 1.
oyster;Crassostrea gigas;RNA/DNA ratio;Off-bottom culture;Condition indices;
 Cited by
삼배체와 이배체 굴, Crassostrea gigas의 형태 및 생리학적 특성 비교,김수경;심나영;이원영;최민섭;최은희;임현정;

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