温度对花鲈饥饿代谢的影响
Effect of Water Temperature on Metabolizability of Starved Lateolabrax japonicus
用自制的密闭流水式呼吸仪，测定了温度对饥饿花鲈（鱼体重221.7±17.4 g）的排氨率和耗氧率的影响。在10℃、15℃、20℃、25℃和30℃温度下，分析了其排氨率和耗氧率的变化规律，并通过氨商（AQ）分别探讨了蛋白质供能比例及内源氮排泄（ENE）。结果认为：（1）排氨率和耗氧率均随温度的升高而升高，温度对两者的影响极其显著(P<0.01)；（2）高温30℃时的排氨率是低温10℃时的近9倍，内源氮排泄（ENE）占体蛋白质含氮量的比例也由10℃时的0.06％上升至30℃时的 0.55%，表明蛋白质供能的绝对值随温度升高增加了9倍，而耗氧率增加了4.5倍，氨商（AQ）仅提高了近1倍，参与供能的蛋白质占能量底物的比例由11.84％上升至23.00％，饥饿花鲈的能量消耗主要是由脂肪和碳水化合物提供；（3）Q10值的变化证明花鲈的排氨率比耗氧率对温度具有更高的敏感性，20～25℃时，Q10最小，印证了此温度为花鲈的最适生长温度。
n experiment was conducted to evaluate the effect of water temperature on ammonia excretion rate and oxygen consumption rate of starved Lateolabrax japonicus with body weight of 221.7±17.4g by a self-made closed respiration instrument. At water temperature of 10℃, 15℃, 20℃, 25℃ and 30℃, We analysed changing regulation of the ammonia excretion and oxygen consumption rate , and discussed the protein’s proportion which provide energy and endogenous nitrogen excretion (EXE)through analysing AQ. The results were: (1) The Ammonia Excretion Rate and Oxygen Consumption Rate rised with rising of temperature, the effect of the temperature was significant for both of them(P<0.01). (2)The ammonia excretion rate(30℃) was about 9 times than that of the ammonia excretion rate(10℃), endogenous nitrogen excretion(EXE) taking the proportion containing nitrogen quantity of body protein rised from 0.06%(10℃) to 0.55%(30℃), it represented that the absolute value of the protein\\\\\\\\\\\\\\\
严小军、王丹丽、沈勤、徐善良
生理学生物化学环境生物学
花鲈温度饥饿排氨率耗氧率氨商内源氮排泄
Lateolabrax japonicusstarvationtemperaturesammonia excretion rateoxygen consumption rateAQendogenous nitrogen excretion
严小军,王丹丽,沈勤,徐善良.温度对花鲈饥饿代谢的影响[EB/OL].(2007-09-25)[2025-08-11].http://www.paper.edu.cn/releasepaper/content/200709-524.点此复制
评论