摘要
2008年11—12月,在室内采用实验生态学方法,研究了不同水温(5.5、8.5、11.5、14.5、17.5℃)条件下,体重为(26.5±2.0)g的溪红点鲑Salvelinus fontinalus饥饿状态下的耗氧率、排氨率和窒息点。结果表明:溪红点鲑的耗氧率、排氨率和窒息点均与温度呈正相关关系,其回归方程分别为RO=13.723t0.9738(R2=0.9974)、RN=0.1687t1.0896(R2=0.9977)、PS=0.2364lnt+0.8529(R2=0.9960);氧氮比为58.1～66.6,氧氮比与温度呈负相关关系,其回归方程为O∶N=81.36t-0.1158(R2=0.9915),说明在本试验温度范围内,饥饿状态的溪红点鲑的代谢物质以脂肪和碳水化合物为主。
The oxygen consumption, ammonia excretion and suffocation point in brook trout Salvelinusfontinalus in starvation were measured at different temperatures （5.5± 0.5,8.5 ± 0.5,11.5 ± 0.5,14.5 ± 0.5, and 17.5 ± 0.5 ℃ ）. The oxygen consumption rates（ R0 ）, ammonia excretion rates （RN ） and the suffocation point（Ps） of the fish was found to increase with the increase in water temperature, with the correlation formulas of R0 = 13. 723t^0.9738（R^2 =0. 9974）, RN =0. 1687t^1.896（R^2 = 0. 9977） and of Ps = 0.2364 lnt ＋ 0. 8529 （R^2 =0.9960）. The O： N values of the fish was found to decrease with increase in water temperature, with the correlation formulas of O： N = 81.36t^-0. 1158 （R^2 = 0. 9915 ）. The O： N values of the fish was 58.1 - 66.6 at water temperatures ranging from （5.5 ± 0.5 ）℃ to （17.5 ＋ 0.5）%, indicating that fat and carbohydrate were the main energy sources for the brook trout under starvation.
出处
《大连水产学院学报》
CSCD
北大核心
2010年第1期93-96,共4页
Journal of Dalian Fisheries University
基金
北京市科技攻关项目(Z080005032508019)
关键词
溪红点鲑
温度
耗氧率
排氨率
窒息点
brook trout
temperature
oxygen consumption
ammonia excretion
suffocation point
