摘要
在实验条件下，对罗非鱼五个品系，即吉富品系尼罗罗非鱼、“７８”品系尼罗罗非鱼、奥利亚罗非鱼、尼奥鱼和红罗非鱼的耐盐性进行了比较研究。在９６ｈ半致死盐度（ＭＬＳ－９６）、平均成活时间（ＭＳＴ）及５０％成活时间（ＭＴ５０）三个耐盐指标上，五个品系罗非鱼的耐盐性表现为“奥利亚”＞红罗非鱼＞尼奥鱼＞“吉富”＞“７８”。在盐度为１６‰的咸淡水中，“奥利亚”、红罗非鱼、“吉富”和尼奥鱼的成活率显著高于“７８”，绝对增重率的大小顺序是“吉富”＞红罗非鱼＞“７８”、尼奥鱼＞“奥利亚”。
Comparisons of salt tolerance among five stocks of tilapia: GIFT strain of Nile tilapia, ' 78 ' strain of Nile tilapia, blue tilapia, Nile tilapia (♀) × blue tilapia () and red tilapia were conducted in laboratory. The result showed the range of salt tolerance was blue tilapia > red tilapia > Nile tilapia × blue tilapia > GIFT strain > ' 78 ' strain, at three indices of mean survival time ( MST ), 50% survival time ( ST 50 ) and ninty six hours median lethal salinity ( MLS 96 ). Culture test showed that, in survival rate, blue tilapia, red tilapia, GIFT strain and Nile tilapia × blue tilapia was higher than ' 78 ' strain significantly; absolute growth rate in body weight was GIFT strain > red tilapia > ' 78 ' strain and Nile tilapia × blue tilapia > blue tilapia in 16‰ brackishwater .
出处
《水产科技情报》
1999年第1期3-6,共4页
Fisheries Science & Technology Information
关键词
罗非鱼
耐盐性
Tilapia Salt tolerance
