Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Reproductive Cycle of the Striped Eel Catfish Plotosus lineatus (Thunberg)

쏠종개 Plotosus lineatus (Thunberg)의 생식주기

  • Heo, Seong-Il (Faculty of Applied Marine Science, Cheju National University) ;
  • Ryu, Yong-Woon (Marine and Environmental Research Institute, Cheju National University) ;
  • Rho, Sum (Faculty of Applied Marine Science, Cheju National University) ;
  • Lee, Chi-Hoon (Marine and Environmental Research Institute, Cheju National University) ;
  • Lee, Young-Don (Marine and Environmental Research Institute, Cheju National University)
  • 허성일 (제주대학교 해양과학부) ;
  • 유용운 (제주대학교 해양과환경연구소) ;
  • 노섬 (제주대학교 해양과학부) ;
  • 이치훈 (제주대학교 해양과환경연구소) ;
  • 이영돈 (제주대학교 해양과환경연구소)
  • Published : 2007.06.30
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Abstract

We investigated the reproductive cycle of the striped eel catfish Plotosus lineatus. Specimens were sampled in the coastal waters of Sungsan and Jocheon, east of Jeju, Korea, from September 2001 to August 2002. The gonadosomatic index (GSI) in females and males were reached a maximum in June $(14.18{\pm}10.38)$ and July $(0.35{\pm}0.12)$, respectively. Based on histological observations and GSI variation, the reproductive cycle was classified into the following successive stages: in females, growing (September-April), mature (April-June), spawning (June-July), and degenerative and recovery (July-September) and in males, growing (August-December), mature (September-May), spent (April-July), and degenerative and recovery (June-August). The total length at 100% maturity exceeded 15 cm and the fecundity ranged from 525 to 1176 eggs. The fecundity was correlated positively with total length and body weight. Histological observations of the gonads suggest that this species is a spring-summer spawner with group-synchronous type oocyte development.

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References

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