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Histological Study on the Reproductive Cycle of Stichopus japonicus in the West Coast of Korea  

Park, Kwang-Jae (West Sea Fisheries Research Institute, National Fisheries Research and Development Institute)
Park, Young-Je (West Sea Fisheries Research Institute, National Fisheries Research and Development Institute)
Kim, Su-Kyoung (West Sea Fisheries Research Institute, National Fisheries Research and Development Institute)
Choi, Sang-Duck (Department of Aquaculture, Chonnam National University)
Kim, Yong-Gu (Department of Aquaculture, Chonnam National University)
Choi, Nak-Hyun (Department of Aquaculture, Chonnam National University)
Publication Information
Journal of Aquaculture / v.20, no.1, 2007 , pp. 26-30 More about this Journal
Abstract
Resources of the sea cucumber, Stichopus japonicus in the west coast of Korea are decreasing sharply due to overfishing and severe marine pollutions. Artificial seed production and release of this species need to be conducted to maintain sea cucumber stock in the region. In this study, to provide basic information for such works, reproductive cycle of sea cucumber collected from Anmyondo in the region was histologically studied for a year from October 2004 to September 2005. This species was dioecious, and its gonads was composed of a number of gametogenic follicles. The gonadosomatic index (GSI) was reached the maximum in June (7.91), and the minimum in October (0.42). The main spawning occurs between June and August. The reproductive cycle of the sea cucumber could be divided into five stages: multiplicative stage (January to March), growing stage (March to April), mature stage (April to July), spawning.
Keywords
Sea cucumber; Stichopus japonicus; Reproductive cycle; Gonadosomatic index (GSI);
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Times Cited By KSCI : 2  (Citation Analysis)
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