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Journal of Environmental Toxicology 2010;25(4):287-294.
Intersexuality of Crassostrea gigas and Ruditapes philippinarum in Southern Coastal Waters of Korea
Jung Sick Lee , Yeon Gyu Lee , Seung Wan Kang , Ji Seon Park , Dong Geun Lee , Mi Ae Jeon , Sun Mi Ju
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ABSTRACT
  Objectives
: The aim of this study was to verify the intersexuality of Crassostrea gigas and Ruditapes philippinarum in southern coastal waters of Korea.
  Methods : Specimens of Crassostrea gigas (n=363) were collected from six areas of Tongyeong, Geoje and Yeosu. Ruditapes philippinarum (n=221) was collected from five areas of Yeosu. The sex ratio and intersexuality were determined after observing gonad preparations.
  Results : The rate of intersexuality in Crassostrea gigas was 16.25%, with females (24.79%; n=30/121) exhibiting a higher rate than males (11.98%; n=29/242). The rate of intersexuality in Ruditapes philippinarum was 24.43%, with females (37.76%; n=37/98) exhibiting a higher rate than males (13.82%; n=17/123).
  Conclusions : The results of this study suggest that intersexuality is induced by aquatic pollutants such as endocrine disrupting chemicals (EDCs).
Keywords: Crassostrea gigas; Intersexuality; Ruditapes philippinarum
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