摘要
在盐度为淡水、7、14、2 1、2 8和 35的条件下 ,测定了 3个体重组 (1.5 7～ 4.87g ,7.0 7～ 18.2 3g和31.5 0～ 5 2 .41g)的台湾红罗非鱼的耗氧率 ,方差分析表明 ,盐度对台湾红罗非鱼的耗氧率有极显著的影响(P <0 .0 1) .体重范围为 1.5 7～ 18.2 4g时 ,盐度 7实验组的耗氧率最高 ,分别为 0 .41mgO2 ·g-1·h-1(1.5 7～ 4.78g)和 0 .34mgO2 ·g-1·h-1(7.0 7～ 18.2 3g) ,体重范围为 31.5 0～ 5 2 .41g时 ,耗氧率最高值出现在盐度 35组 ,为 0 .30mgO2 ·g-1·h-1.耗氧率最低值也因体重范围的不同而出现在不同的盐度 ,体重范围为1.5 7～ 4.78g时 ,盐度 14组的耗氧率最低 ,为 0 .2 8mgO2 ·g-1·h-1,体重范围在 7.0 7～ 5 2 .41g时 ,耗氧率的最低值均出现在盐度 2 1组 ,其中体重范围 7.0 7～ 18.2 3g的最低值为 0 .2 2mgO2 ·g-1·h ,而体重范围31 5 0～ 5 2 .41g的最低耗氧率为 0 .13mgO2 ·g-1·h-1.协方差分析表明 ,盐度和体重对台湾红罗非鱼的耗氧率存在极显著的交互作用 (P <0 .0 1) .
The effects of salinity and body weight on oxygen consumption of Taiwan red tilapia (Oreochromis niloticus×O. mossambicus) were studied. The fish was divided into three groups by their body weight: 1.57～4.87 g (G 1),7.07～18.23 g (G 2) and 31.50～52.41 g (G 3). The results showed that oxygen consumption at diffe-rent salinities was significantly different (P<0.01). The rates of oxygen consumption in G 1 and G 2 were highest,with 0.41 mg O 2·g -1·h -1 for G 1,and 0.34 mg O 2·g -1·h -1 for G 2 respectively at salinity 7‰; while G 3 had highest level with 0.30 mg O 2·g -1·h -1 at 35‰. The lowest oxygen consumption level appeared at diffe-rent salinities with the different body weight. The lowest level in G 1,0.27 mg O 2·g -1·h -1,appeared at salinity 14‰. G 2 and G 3 had lowest oxygen consumption level at 21‰,with 0.22 mg O 2·g -1·h -1 and 0.13 mg O 2·g -1·h -1 respectively. ANOV showed that oxygen consumption was significantly affected by the interaction of salinity and body weight.
出处
《应用生态学报》
CAS
CSCD
2002年第6期739-742,共4页
Chinese Journal of Applied Ecology
基金
国家自然科学基金重大项目 ( 39430 15 0 )
深圳市科技局资助项目 ( 0 0 0 0 982 4)
关键词
盐度
体重
台湾红罗非鱼
耗氧率
Taiwan red tilapia, Salinity, Body weight, Oxygen consumption.
