전자저널 > 전자저널 > Spawning induction according to Stim ulating Treatment and Influence of Water Temperature on Egg Development and Larvae Rearing of Oyster, Crassostrea nippona

Spawning induction according to Stim ulating Treatment and Influence of Water Temperature on Egg Development and Larvae Rearing of Oyster, Crassostrea nippona

Sung Kyoo Yoo and Kyoung Ho Kang

Department of Aquacullture, Pukyong National University, Pusan 608-737, Korea

In order to obtain the basic data for the effective seed production of oyster, Crassostrea nippona, rearing experiments of the oyster larvae were conducted from July 20 to September 10, were treated for spawning induction by means of following three methods, that is temperature rise, sperm suspension and KCl addition. Data on number of spawned eggs and larval survival until the full grown larvae in each spawned female were recorded. The maximum number of eggs spawned and the highest fertilization were obtained at sperm suspension stimulation. The relationships between the water temperature and the required time in each egg developmental stage were investigated. The highest survival rate was obtained at 24℃ of water temperature.

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