Development and Reproduction (한국발생생물학회지:발생과생식)

The Korean Society of Developmental Biology (한국발생생물학회)
권호 표지

Sex Ratio and Sex Reversal in Two-year-old Class of Oyster, Crassostrea gigas (Bivalvia: Ostreidae)

  • Park, Jung Jun (Aquaculture Management Division, Aquaculture Research Institute, NFRDI) ;
  • Kim, Hyejin (Dept. of Aqualife Medicine, Chonnam National University) ;
  • Kang, Seung Wan (Gyeongsangnam-do Fisheries Resources Research Institute) ;
  • An, Cheul Min (Biotechnology Research Division, Aquaculture Research Institute, NFRDI) ;
  • Lee, Sung-Ho (Dept. of Green Life Science, Sangmyung University) ;
  • Gye, Myung Chan (Dept. of Life Science, College of Natural Sciences, Hanyang University) ;
  • Lee, Jung Sick (Dept. of Aqualife Medicine, Chonnam National University)
  • Received : 2012.10.02
  • Accepted : 2012.11.14
  • Published : 2012.12.31
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Abstract

The sex ratio (F:M) in the same population of oyster, Crassostrea gigas at the commencement of the study (2007) was 1:1.0, but changed to 1:2.8 by the end of the study (2008). The sex reversal rate in two-year-old oysters was 40.2%. Specifically, female to male sex reversal rate was 66.1%, which is higher than the male to female sex reversal rate of 21.1%. The sex reversal pattern of C. gigas appears to go from male ${\Rightarrow}$ female ${\Rightarrow}$ male, and as such is determined to be rhythmical hermaphroditism.

Keywords

References

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