温度对达氏鲟幼鱼耗氧率的影响  

Effects of Temperature on Oxygen Consumption Rate of Dabry's Sturgeon Juvenile

作　　者：周波[1,2] 卢华 徐飞[1] 陈先均[1] 叶华[3] 

机构地区：[1]四川省农业科学院水产研究所,四川宜宾644000 [2]四川省生物资源保护与可持续利用实验室,四川成都611731 [3]四川宜宾学院生命科学与食品工程学院,四川宜宾644000

出　　处：《西南农业学报》2014年第5期2236-2239,共4页Southwest China Journal of Agricultural Sciences

基　　金：四川省农业科学院青年基金项目(2011QNJJ-017)

摘　　要：采用流水式封闭呼吸装置对不同水温条件下（9 ～30℃）达氏鲟幼鱼的耗氧率和呼吸频率进行了研究.结果表明：在试验温度范围内,达氏鲟幼鱼耗氧率和呼吸频率都有随水温升高逐渐上升的趋势,耗氧率从9℃的（0.0314±0.0049） mgO2·g^-1·h^-1逐渐升至30℃的（0.2292±0.0276） mg O2·g^-1·h^-1,增加7.3倍.呼吸频率从9℃的（57.88±14.04）次/min,逐渐上升至30℃的（126.10±13.45）次/min,增加2.2倍.此外,达氏鲟幼鱼耗氧率昼夜节律测定结果表明,其昼均耗氧率为（0.1259±0.0075）mg O2·g^-1·h^-1,略低于夜均耗氧率（0.1278±0.0087）mgO2·g^-1·h^-1,但方差分析二者无显著差异（P＞0.05）,表明达氏鲟幼鱼耗氧率并不存在明显的昼夜节律.The oxygen consumption rate and respiratory frequency of Dabry＇s sturgeon juvenile was measured in current closed breathing equipment under different temperature （from 9 to 30 ℃）.The results showed that the oxygen consumption rate and respiratory frequency of Dabry＇s sturgeon juvenile were both increased as the temperature increased under tested conditions.The oxygen consumption rate range from （0.0314 ±0.0049） to （0.2292 ±0.0276） mgO2·g^-1·h^-1 and the respiratory frequency range from（57.88 ± 14.04） to（126.10 ± 13.45） times/min as the temperature raised from 9 to 30 ℃ increased 7.3 and 2.2 times,respectively.Besides,the circadian rhythm of the oxygen consumption rate of Dabry＇s sturgeon juvenile test indicated that the oxygen consumption rate in the day-time was a little lower than that in the night-time,but the analysis of variance indicated that there was no significant deviation between the two value.In other words,there was no apparent circadian rhythm in the oxygen consumption rate of Dabry＇s sturgeon juvenile.

关 键 词：达氏鲟 耗氧率 呼吸频率 温度 

分 类 号：S965.215[农业科学—水产养殖]