Korean Journal of Environmental Biology (환경생물)

Korean Society of Environmental Biology (한국환경생물학회)
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Artificial induction of spawning by human chorionic gonadotropin and carp pituitary extract in marine medaka, Oryzias dancena

인간융모성생식선자극 호르몬과 잉어 뇌하수체에 의한 해산송사리, Oryzias dancena 인공산란 유도

  • Park, In-Seok (Division of Marine Bioscience, College of Ocean Science and Technology, Korea Maritime and Ocean University)
  • 박인석 (한국해양대학교 해양과학기술대학 해양생명과학부)
  • Received : 2020.05.12
  • Accepted : 2020.06.25
  • Published : 2020.06.30
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Abstract

The method of natural spawning is very passive and inconvenient for the study of developmental engineering in marine medaka, Oryzias dancena. The optimum concentration of human chorionic gonadotropin (HCG) and carp pituitary extract (CPE) for ovulation and spawning, and the injection time for the artificial spawning of marine medaka were analyzed in this study. The success rate, survival rate, and hatching rate were highest with 100IU HCG kg-1 BW and 5mg CPE L-1 in both male and female marine medaka (p<0.05). After obtaining unfertilized eggs and sperm by the injection of HCG and CPE into the broodstock of marine medaka, artificial fertilization could be successfully achieved any time fertilized eggs are needed in this species. This result should be useful for developing a study program for marine medaka as an experimental animal.

해산송사리(Oryzias dancena)를 대상으로 한 발생공학 연구시, 현재의 자연산란법은 매우 수동적이고 불편하다. 본 연구에서는 적정 시간에 해산송사리의 수정란을 획득하고자 인공산란을 위한 인간융모성생식선자극 호르몬(human chorionic gonadotropin; HCG)과 잉어 뇌하수체(carp pituitary extract; CPE)의 최적 농도를 조사하였다. 정자활성도, 산란율, 수정 후 3일에서의 수정란 생존율 및 부화율은 100 HCG IU kg-1 BW (body weight)와 CPE 5 mg L-1에서 가장 높았다(p<0.05). 본 종에서의 수정란 필요시, HCG와 잉어 뇌하수체 주사를 통하여 적정시간에 미수정란과 정자를 획득할 수 있었다. 본 연구 결과는 해산송사리의 실험동물화 개발에 유용하리라 사료된다.

Keywords

References

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