摘要
采用不同盐度梯度海水对斜带髭鲷(HapalogenysnitensRichardson)仔鱼进行饲育实验。结果表明,盐度对斜带髭鲷仔鱼的活力、摄食及存活率有明显影响。盐度为24,29,34的3个实验组仔鱼不投饵存活系数分别为9.77, 9.83和8.62,而盐度为14,39,44的3个实验组仔鱼的存活系数则分别为4.19, 3.50和1.65,方差分析显示,前3个实验组与后3个实验组的组间存在显著差异(P<0.05) 3个实验组的摄食率明显高于后3个实验组;仔鱼孵出后至第8 ;前天,前 3个实验组的成活率为65%￣85%,高于后 3个实验组的0￣20%。
Difference levels of salinity clearly effects the activity of the early larvae of Hapalogenys nitens Richardson and also effects its feeding rate and survival. The results show the following: The survival activity index of larvae is 8.62~9. 83 when the salinities are 24,29 and 34 but it is 1.65~4.19 when the salinities are 14,39 and 44,there is a marked different between them (p<0.5). The feeding rate of the former is evidenthy higher than the latter. When they were 8 days old, the survival of the former is 65%~85% that is significantly higher than the latter’s at 0~20%.
出处
《海洋科学》
CAS
CSCD
北大核心
2004年第4期5-7,28,共4页
Marine Sciences
关键词
盐度
斜带髭鲷
仔鱼
活力
摄食率
成活率
salinity
Hapalogenysnitens Richardson
larvae
activity
feeding rate
survival
