한국패류학회지 (The Korean Journal of Malacology)

한국패류학회 (The Malacological Society of Korea)
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Micronesia Chuuk Island에 서식하는 Top shell, Trochus niloticus의 생식주기

Reproductive Cycle of Top Shell, Trochus niloticus in Chuuk Island, Micronesia

  • 진영석 (제주대학교 해양과환경연구소) ;
  • 박용주 (류큐대학) ;
  • 김한준 (제주대학교 해양과환경연구소) ;
  • 나오수 (제주대학교 해양과환경연구소) ;
  • 송영보 (제주대학교 해양과환경연구소) ;
  • 이치훈 (제주대학교 해양과환경연구소) ;
  • 최면식 (Chuuk 해양개발 연구소) ;
  • 노섬 (제주대학교 해양과학부) ;
  • 이영돈 (제주대학교 해양과환경연구소)
  • Jin, Young-Seok (Marine and Environmental Research Institute, Cheju National University) ;
  • Park, Yong-Ju (Sesoko Station, Tropical Biosphere Research Institute, University of the Ryukyus) ;
  • Kim, Han-Jun (Marine and Environmental Research Institute, Cheju National University) ;
  • Na, Oh-Soo (Marine and Environmental Research Institute, Cheju National University) ;
  • Song, Young-Bo (Marine and Environmental Research Institute, Cheju National University) ;
  • Lee, Chi-Hoon (Marine and Environmental Research Institute, Cheju National University) ;
  • Choi, Myun-Sik (Chuuk Marine Development Institute) ;
  • Rho, Sum (Faculty of Ocean Science, Cheju National University) ;
  • Lee, Young-Don (Marine and Environmental Research Institute, Cheju National University)
  • 발행 : 2004.06.01
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초록

Gametogenesis, changes of gonad bulk index (GBI), monthly variation in oocyte diameter, reproductive cycle and spawning with lunar cycle of the top shell, Trochus niloticus were investigated by histological examination. The specimens were sampled in the coastal waters of Chuuk Island, Micronesia, form November 1999 to September 2000. T. niloticus is a gonochorism, and the female and male were present in an approximately 1:1 ratio (p > 0.05). The ovary contained with the oocyte of yolk stage, the testis composed of the spermatid and spermatozoa at around the year. Monthly GBI were higher at February, March, April and June than the other months. Major spawning occurred between April and May, and June and July but the individuals of partially spawning were presented throughout the year. GBI with lunar cycle were higher at the full moon than the other lunar phase. These results suggest that the spawning occurred between the full moon and last quarter moon.

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