Development and Reproduction (한국발생생물학회지:발생과생식)

The Korean Society of Developmental Biology (한국발생생물학회)
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Gonadal Development and Reproductive Cycle of Red Sea Urchin Pseudocentrotus depressus

분홍성게(Pseudocentrotus depressus)의 생식소 발달과 생식주기

  • Kim, Jae-Woo (Fisheries Resources Enhancement Center, National Fisheries Research and Development Institute) ;
  • Lee, Chi-Hoon (Marine and Environmental Research Institute, Jeju National University) ;
  • Lee, Young-Don (Marine and Environmental Research Institute, Jeju National University) ;
  • Chung, Sang-Chul (Dept. of Aquatic Biomedical Science, Jeju National University)
  • 김재우 (국립수산과학원 자원조성사업단) ;
  • 이치훈 (제주대학교 해양과환경연구소) ;
  • 이영돈 (제주대학교 해양과환경연구소) ;
  • 정상철 (제주대학교 해양과학대학)
  • Received : 2010.10.27
  • Accepted : 2010.11.24
  • Published : 2010.12.31
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Abstract

Gonadal development and reproductive cycles of red sea urchin Pseudocentrotus depressus were investigated based on the monthly variations of gonadosomatic index (GSI), gametogenesis and developmental phases of gonad. The specimens were sampled monthly in the north coastal waters of Ongpo and the south coastal waters Bubhwan of Jeju Island, Korea, from December 1994 to December 1995. Monthly changes of GSI values and reproductive cycles showed similar trends in Ongpo and Bubhwan. In females GSI values were reached the maximum in December ($17.8{\pm}4.04$ in Ongpo, $13.8{\pm}1.51$ in Bubhwan). In males GSI values were reached the maximum in December ($15.4{\pm}1.53$ in Ongpo, $13.6{\pm}1.32$ in Bubhwan). In both Ongpo and Bubhwan major spawning probably occurred between November and February when water temperatures and daylengths decrease. The histological observations of the gonads suggested that this species seemed to have a synchronous gametogenesis and one spawning season a year in Jeju Island costal waters.

제주도 옹포와 법환 연안에 서식하는 분홍성게의 생식소 발달과 생식주기를 조사하기 위하여 1994년 12월부터 1995년 12월까지 채집된 개체를 대상으로 생식소중량지수(GSI)의 월별 변화, 월별 생식소 발달 단계를 조사하였다. 옹포와 법환 지역에 서식하는 분홍성게의 생식소중량지수의 월별 변화는 유사하였다. 암컷은 옹포와 법환 모두 12월에 각각 $17.8{\pm}4.04$, $13.8{\pm}1.51$로 최고값을 보였고, 수컷도 옹포와 법환 모두 12월에 각각 $15.4{\pm}1.53$, $13.6{\pm}1.32$로 최고값을 나타냈다. 주 산란은 옹포와 법환 수온과 일장 주기가 감소하는 11월~2월에 일어났다. 생식소의 조직학적 관찰 결과, 제주도 옹포와 법환 연안에 서식하는 분홍성게의 암 수 배우자세포 발달 양상은 동시 발달형이고, 년 1회의 산란시기를 갖은 것으로 생각된다.

Keywords

References

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