中文摘要：

利用简易密闭的流水装置,对普安鲫（Carassius auratus）鱼苗的耗氧率进行了初步研究;选择体重为1.40～2.50 g的小规格及21.20～33.31 g大规格普安鲫鱼苗,研究其昼夜耗氧率的变化规律以及水温、体重对其耗氧率的影响。结果表明,温度对普安鲫鱼苗耗氧率有显著影响,耗氧率随温度的增加而升高,随体重的增加而降低。2种规格普安鲫鱼苗的昼夜耗氧率变化曲线基本一致,日均（7∶00～17∶00）耗氧率0.1700 mg/（g.h）与夜均（19∶00～5∶00）耗氧率0.1721 mg/（g.h）相似;其中,小规格普安鲫在23∶00出现耗氧率低峰0.1253 mg/（g.h）,5∶00出现耗氧率高峰0.2647 mg/（g.h）;大规格普安鲫在21∶00出现耗氧率低峰0.0909 mg/（g.h）,7∶00出现耗氧率高峰0.2375 mg/（g.h）。

英文摘要：

The standard oxygen consumption rate of juvenile Carassius auratus Linnaeus （weight： 1.40 -2.50 g, 21.20 -33.31 g ） were measured. The results showed that temperature has significant effect on consumption rate of juvenile C. auratus. With the increase of the temperature, the consumption rate increased, while the consump- tion rate decreased when body size increasaed. The diurnal rhythm of the standard oxygen consumption [ 7： 00 - 17： 00,the average consumption rate 0. 1700 mg/（ g · h） ] was similar to nocturnal rhythm [ 19：00 -5： 00,the average consumption rate 0. 1721 mg/（ g ·h） ]. The standard oxygen consumption of the small size group was served with the peak at 5：00 [0. 2647 mg/（g·） ] ,and the minimum at 23：00 [0. 1253 mg/（g·h） ]. The standard oxygen consumption of the large size group was observed with the peak at 7：00 [0. 2375 rag/（ g· h ） ], and the minimum at 21：00 [0.0909 mg/（g ·h） ].