수산해양기술연구 (Journal of the Korean Society of Fisheries and Ocean Technology)

  • 제55권4호
  • /
  • Pages.349-355
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  • 2019
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  • 2671-9940(pISSN)
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  • 2671-9924(eISSN)
한국수산해양기술학회 (The Korean Society of Fisheries and Ocean Technology)
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제주 연안에 출현하는 독가시치 Siganus fuscescens의 생식생태

Reproductive ecology of rabbit fish, Siganus fuscescens in the coastal waters off Jeju Island of Korea

  • 이승종 (국립수산과학원 서해수산연구소) ;
  • 김맹진 (국립수산과학원 서해수산연구소) ;
  • 한송헌 (국립수산과학원 제주수산연구소)
  • LEE, Seung-Jong (West Sea Fisheries Research Institute, National Institute of Fisheries Science) ;
  • KIM, Maeng-Jin (West Sea Fisheries Research Institute, National Institute of Fisheries Science) ;
  • HAN, Song-Heon (Jeju Fisheries Research Institute, National Institute of Fisheries Science)
  • 투고 : 2019.07.23
  • 심사 : 2019.09.05
  • 발행 : 2019.11.30
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초록

Reproductive ecology of rabbit fish, Siganus fuscescens were investigated from samples collected monthly in the coastal waters off Jeju Island of Korea from February to December 2014. In male and female of S. fuscescens, the values of GSI were reached high values between July to August in which the water temperature was high, and then decreased until December. The occurrence of individuals which have mature eggs in ovary were higher from July to August. Therefore, a main spawning season was estimated from July to August, with the highest peak in July. Throughout histological observation of the ovary in the spawning period, S. fuscescens belong to an group-synchronous and has a one spawning season a year. Fecundity of ovary ranged from 380,000 to 2,600,000 during the spawning period. Size at 50% sexual maturity, determined from logistic equation, were 25.1 cm TL which is over two years.

키워드

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