浙江农业学报

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温度、盐度和体重对美国红鱼幼鱼呼吸和排泄的影响

  

  1. (1 浙江省海洋水产养殖研究所,浙江省近岸水域生物资源开发与保护重点实验室, 浙江 温州 325000; 2 温州科技职业学院,浙江 温州 325105)
  • 出版日期:2014-11-25 发布日期:2014-12-02

Effects of different temperature, salinity and body weight on respiration and excretion of juvenile Sciaenops ocellatus

  1. (1 Zhejiang Mariculture Research Institute; Zhejiang Key Laboratory of Exploitation and Preservation of Coastal Bio\|resource, Wenzhou 325005, China; 2 Wen zhou Vocational College of Science and Technology, Wenzhou 325105, China)
  • Online:2014-11-25 Published:2014-12-02

摘要: 研究了不同温度、盐度及体重对美国红鱼幼鱼呼吸和排泄的影响,结果表明,温度、盐度和体重对试验鱼耗氧率、排氨率影响显著 (P<005)。耗氧率随温度的升高而增大并呈指数相关。10~30℃时,排氨率和O/N比随温度升高而明显升高,并且排氨率与温度呈幂函数相关。呼吸Q10处于正常水平,而排泄Q10较低。当盐度10~40时,耗氧率和O/N比先降后升再降,排氨率先降后升;试验鱼耗氧率和排氨率均随体重的增加而下降,呈幂函数相关,但O/N比变化不显著。 研究了不同温度、盐度及体重对美国红鱼幼鱼呼吸和排泄的影响,结果表明,温度、盐度和体重对试验鱼耗氧率、排氨率影响显著 (P<005)。耗氧率随温度的升高而增大并呈指数相关。10~30℃时,排氨率和O/N比随温度升高而明显升高,并且排氨率与温度呈幂函数相关。呼吸Q10处于正常水平,而排泄Q10较低。当盐度10~40时,耗氧率和O/N比先降后升再降,排氨率先降后升;试验鱼耗氧率和排氨率均随体重的增加而下降,呈幂函数相关,但O/N比变化不显著。

关键词: 美国红鱼幼鱼, 温度, 盐度, 体重, 呼吸, 排泄

Abstract: The effects of different temperature, salinity and body weight on respiration and excretion of juvenile Sciaenops ocellatus were studied, and the results showed that: temperature, salinity and body weight had significant effects on oxygen consumption rate and ammonia excretion rate (P<005). The oxygen consumption rate increased with temperature and there was an exponential correlation between them. The ammonia excretion rate and oxygen\|nitrogen ratio increased significantly with temperature and the ammonia excretion rate was a power function relation with temperature from 10 ℃ to 30 ℃. The Q10 breathing was in normal level, while the level of excretion Q10 was low; From S 10 to S 40, the oxygen consumption rate and oxygen\|nitrogen ratio decreased first then increased and finally decreased, and the ammonia excretion rate decreased first and then increased; The oxygen consumption rate and ammonia excretion rate of juvenile Sciaenops ocellatus was decreased with increasing body weight and power function related, but the effect of body weight on oxygen\|nitrogen ratio was not significant.

Key words: juvenile Sciaenops ocellatus, temperature, salinity, body weight, respiration, excretion