摘要
为了探究罗非鱼规格与耐寒性能的关系,筛选出具有代表性的罗非鱼规格,提高耐寒性能评价的准确性,开展了不同规格罗非鱼耐寒性能的研究.应用室内人工降温,以2℃/d垂直降温,直至所有试验鱼死亡,应用Logistic方程确定罗非鱼的低温半致死温度（LT50）.结果表明：罗非鱼规格与耐寒性能相关,可以选择12朝（体重8.7～12.0 g）的罗非鱼进行后续试验.
To investigate the relationships between tilapia sizes and cold tolerance and select representative tilapia size for accurate evaluation of the cold tolerance, cold tolerance of tilapias with different sizes was investigated. In the condition of indoor artificial cooling, with 2℃/d vertical cooling down to all the tilapias died, the lethal temperatures of 50%（LT50） of tilapias were determined by Logistic function. The results showed that, there was linear correlation between sizes and cold tolerance. We can choose tilapias with weight 8.7-12.0 g for the subsequent study.
出处
《广东农业科学》
CAS
CSCD
北大核心
2014年第14期116-120,共5页
Guangdong Agricultural Sciences
基金
广西壮族自治区直属公益性科研院所基本科研业务费专项(2060302 GXIF-2011-05
GXIF-2012-5
GXIF-2012-14)
国家农业科技成果转化资金项目(2012GB2E100354)
广西科学研究与技术开发计划项目(桂科合1298014-7
桂科转1222017-27)
广西区水产畜牧兽医局科研计划项目(09254-01)
关键词
罗非鱼
规格
半致死温度
昏迷率
累计死亡率
耐寒性能
tilapia
size
lethal temperature of 50%
coma rate
cumulative mortality
cold tolerance
