摘要
盐度21 0～33 0,大黄鱼受精卵孵化率较高,其中盐度29时孵化率达79%。盐度22的海水中饲育20日龄的稚鱼,移到盐度21、25的海水中,48h内的成活率大于95%;移到盐度29以上或17以下的海水中,48h内的成活率明显降低。在盐度22的海水中饲育的30日龄的稚鱼,移到盐度17、21、25、29的海水中,48h内的成活率均大于96%;移到盐度33以上或13以下的海水中,48h内的成活率明显下降。
The hatching rate of Pseudosciaena crocea was high at a salinify of 21.0～33.0 with 79% at a salinify of 29.The Larvac reared 22 for 20 days were taken into the sea water with a salinity of 21 or 25, their survival rate was over 95% within 48h. The rate decreased significantly when they were taken into the water with a salinity of above 29 or below 17. The fish reared in a of salinity of 22 for 20 d were stocked into the water with a salinity of 17, 21, 25 and 29, the survival was all over 96% within 48 h. The survival rate decreased significantly when the fish were taken into the water with salinity above 33 or below 17.
出处
《水产科学》
CAS
北大核心
2005年第1期20-21,共2页
Fisheries Science
基金
宁波市教育局基金资助项目(2001035)
关键词
盐度
大黄鱼
孵化率
稚鱼成活率
large yellow croaker
salinity
Pseudosciaena crocea, hatching rate, larvac
surviv
