摘要
在 2 2 5～ 2 7 3℃、盐度 2 4 5～ 2 9 3条件下 ,对养殖大海马 (Hippocampuskuda)进行了饥饿及投喂方式对其生存和生长影响的实验。成鱼 (体长 10～ 12cm)持续饥饿后 10 9d全部死亡 ,死亡高峰在 80～ 84d ;幼鱼 (体长 4～ 6cm)饥饿后死亡高峰在 6 5～ 72d ,97d全部死亡 ;初生苗 (体长 0 7～ 0 9cm)持续饥饿后有两个死亡高峰 ,分别为 3～ 4d和 7～ 8d ,13d全部死亡。成鱼、幼鱼和初生苗的饥饿不可逆点 (PNR ,thePointofNo return)分别为 85d、70d和 7d ;初生苗饥饿后影响存活率 ,持续饥饿 7d后存活率为 0。每天仅投喂两次或间隔 1d等投饵方式基本不影响幼鱼的生长 ,是可以考虑使用的投喂方法。
To reveal the effects of starvation and feeding modes on the survival and growth of seahorse,the experiments Hippocampus kuda were conducted on condition of 23.5～ 27.3 ℃,salinities 24.5～29.3.The adult fish all died after starvation for 101 days,and the peak of death was at 80～84 day.The larvae all died at 97 day and the peak at 65～72 day,and the newborn larvae all died at 13 day but had two peaks of death. The Point of No-return of adult fish,larvae and newborn larvae were 85、70 and 7 days respecttively,meanwhile the effects of starvation on survival rate of the newborn larvae were significant.The feeding mode effected the growth rate of seahorse dominantly,the survival rate was zero after 7 days’ starvation.The feeding modes,for example,feeding twice a day or feeding 1 day and stop 1 day,could be selected because of making no difference significantly.
出处
《海洋水产研究》
CSCD
2004年第4期51-56,共6页
Marine Fisheries Research
基金
厦门市科技局科技基金 (1 998年 )资助
