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http://dx.doi.org/10.5657/kfas.2007.40.3.141

Reproductive Cycle of the Striped Eel Catfish Plotosus lineatus (Thunberg)  

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)
Publication Information
Korean Journal of Fisheries and Aquatic Sciences / v.40, no.3, 2007 , pp. 141-146 More about this Journal
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.
Keywords
Plotosus lineatus; Reproductive cycle; GSI; Fecundity;
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