Journal of Aquaculture (한국양식학회지)

The Korean Society of Fisheries and Aquatic Science (한국양식학회)
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Hormonal Induction of Sex Reversal in Serranid Fish, Epinephelus septemfasciatus

호르몬처리에 의한 능성어(Epinephelus septemfasciatus)의 성전환

  • Lee Young-Don (Marine Research Institute, Cheju National University) ;
  • Kim Hyung-Bae (Marine Biotechnology Laboratory, KORDI) ;
  • Song Choon-Bok (Department of Aquaculture, College of Ocean Science, Cheju National University) ;
  • Rho Sum (Department of Aquaculture, College of Ocean Science, Cheju National University) ;
  • Lee Jung-Jae (Department of Aquaculture, College of Ocean Science, Cheju National University)
  • 이영돈 (제주대학교 해양연구소) ;
  • 김형배 (한국해양연구소 해양생물공학연구그룹) ;
  • 송춘복 (제주대학교 증식학과) ;
  • 노섬 (제주대학교 증식학과) ;
  • 이정재 (제주대학교 증식학과)
  • Published : 1996.02.01
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Abstract

Hormonal induction of sex reversal was examined by using sex steroid hormones in serranid fish, Epinephelus septemfasciatus. Young fish were collected from the coastal area of Cheju Island, and reared for 2 years before fish were used for the experiments. Without any hormonal treatment, gonads of fish ($1,000\~2,800$ g in body weight) were occupied by oocytes of the perinucleolus stage and bundles of protogonial cells in the area of germinal epithelium. When the induction of sex reversal was attempted by daily oral administration of $17\alpha$-methyltestosterone (0.5 mg/kg fish) for 90 days, active spermatogenesis was induced, and spermatogonia and spermatocytes and spermatids were appeared in all gonads we examined. However, after daily, oral treatment of $17\beta$-estradiol (0.5 mg/kg fish) to. 50 days with the following injection of human chorionic gonadotrophin ($1,000\~1,500$ IU/kg fish) mature oocytes were not induced in fish gonad.

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