摘要
在0、15、25及32四种盐度梯度下,测试了以色列红罗非鱼仔鱼、稚鱼及幼鱼的耐盐性。结果表明:以色列红罗非鱼的耐盐性高于尼罗罗非鱼和奥利亚罗非鱼,低于佛罗里达红罗非鱼和莫桑比克罗非鱼,与莫桑比克和尼罗罗非鱼的杂交种相当。以色列红罗非鱼的耐盐性与其日龄有关,日龄越大,其耐盐性越强。幼鱼与仔、稚鱼间耐盐性存在极显著差异,仔鱼和稚鱼间耐盐性差异不显著。几种耐盐指标中,ST50最灵敏,MST和BT次之,MLS-96和死亡率较差。
The salinity tolerance of Israel red tilapia has been studied at these salinity gradients: 0, 15, 25 and 32. The salinity tolerance of Israel red tilapia is stronger than Oreochromis niloticus and O. aureus, but it is weaker than Florida red tilapia and O. mossambicus, and it is similar to the hybrids of O. niloticus and O. mossambicus. The salinity tolerance of Israel red tilapia is related to the age of days. The older the age of days of Israel red tilapia is, the stronger salinity tolerance is. The difference of salinity tolerance is highly significant between young and fry or juvenile, but it is not significantly different between fry and juvenile. Among these salinity tolerance indexes, ST50 is the most sensitive, MST and BT are sensitive, and MLS-96 and mortality rate are the least sensitive.
出处
《上海水产大学学报》
CSCD
2003年第3期205-208,共4页
Journal of Shanghai Fisheries University
基金
上海水产大学与中捷农场水产良种场合作项目(J-0156).
关键词
红罗非鱼
以色列
耐盐指标
日龄
red tilapia
Israel
salinity tolerance
age of days
