The Korean Journal of Malacology (한국패류학회지)
- Volume 21 Issue 2 Serial No. 34
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- Pages.81-93
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- 2005
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- 1225-3480(pISSN)
Sexual Maturation and Artificial Spawning of the Hard Clam, Meretrix Iusoria (Bivalvia: Veneridae) on the West Coast of Korea
- Chung, Ee-Yung (School of Marine Life Science, Kunsan National University) ;
- Kim, Yong-Min (Department of Fisheries Science, Graduate School, Kunsan National University) ;
- Hur, Young-Baek (Aquaculture Environment Institute, National Fisheries Research and Development Institute) ;
- Ryu, Dong-Ki (School of Marine Life Science, Kunsan National University)
- Published : 2005.12.31
Abstract
Reproductive cycle with the gonadal phases, first sexual maturity, artificial spawning amount by the size and spawning interval of the hard clam, Meretrix lusoria were investigated by histological observations and morphometric data by artificial spawning induction. Meretrix lusoria is dioecious and oviparous. The reproductive cycle of this species can be classified into five successive stages: early active stage (January to March), late active stage (February to May), ripe stage (April to August), partially spawned stage (June to September), and spent/inactive stage (September to February). The spawning period was from June to September, and the main spawning occurred between July and August when the seawater temperature exceeds over