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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 1996.11
- 수록면
- 419 - 427 (9page)
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In order to obtain the basic information for seedling production of surf clam, Spisula sachalinensis, spawning induction and egg development were investigated.
NH₄OH addition and serotonin injection could induce the spawning in surf clam. Water temperature rising, sperm suspension immersion, UV-ray irradiated seawater and H₂O₂ addition less affected on induction of spawning than NH₄OH and serotonin did. On the other hand, males were more sensitive to the treatments than females. The response time to initial spawning in the case of NH₄OH addition was 3~4 hours. However in the case of serotonin injection, it was within 5 minutes. The number of eggs released by NH₄OH addition were significantly more than those released by serotonin injection. The serotonin injection induced higher rates of germinal vesicle breakdown than the NH₄OH addition. Fertilizing and hatching rates of the eggs also were the similar results.
Eggs of surf clam were demersal isolated eggs and averaging 65.2±1.8 ㎛ in diameter after spawning. Optimum range of water temperature for the development of egg was 15~20℃. The required time for development of D-shaped larvae was 42 hours at 15℃ and 27 hours at 20℃, respectively.
NH₄OH addition and serotonin injection could induce the spawning in surf clam. Water temperature rising, sperm suspension immersion, UV-ray irradiated seawater and H₂O₂ addition less affected on induction of spawning than NH₄OH and serotonin did. On the other hand, males were more sensitive to the treatments than females. The response time to initial spawning in the case of NH₄OH addition was 3~4 hours. However in the case of serotonin injection, it was within 5 minutes. The number of eggs released by NH₄OH addition were significantly more than those released by serotonin injection. The serotonin injection induced higher rates of germinal vesicle breakdown than the NH₄OH addition. Fertilizing and hatching rates of the eggs also were the similar results.
Eggs of surf clam were demersal isolated eggs and averaging 65.2±1.8 ㎛ in diameter after spawning. Optimum range of water temperature for the development of egg was 15~20℃. The required time for development of D-shaped larvae was 42 hours at 15℃ and 27 hours at 20℃, respectively.
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