不同时间间隔重复力竭运动对南方鲇幼鱼耗氧率的影响  

Effect of Repetitive Bouts of Exhaustive Exercise with Different Interval on Oxygen Consumption in Juvenile Southern Catfish

作　　者：付世建[1] 曹振东[1] 彭姜岚[1] 

机构地区：[1]重庆师范大学生命科学学院进化生理与行为学实验室重庆市动物生物学重点实验室,重庆400047

出　　处：《重庆师范大学学报（自然科学版）》2009年第1期13-16,共4页Journal of Chongqing Normal University:Natural Science

基　　金：国家自然科学基金(No.30700087);重庆市自然科学基金(No.2007BB1226)

摘　　要：考察我国特有暖水性伏击取食鱼类南方鲇(Silurus meridionalisChen)的重复运动能力,检验力竭运动后的恢复状态是否对下一次力竭运动代谢恢复过程产生影响。实验仪器采用自制流水式呼吸仪(专利号ZL200520010481.0);南方鲇幼鱼选用体重为17.64~48.21g,n=40;在(25.0±1.0)℃条件下,测定了不同时间间隔即10min重复3次、30min重复2次和24h重复2次条件下,重复力竭性运动(驱赶至力竭)后南方鲇幼鱼的耗氧率(Vo2)恢复过程。研究发现在本实验条件下,南方鲇幼鱼静止耗氧率(Vo2rest)为(2.39±0.13)^(2.83±0.31)mg.min-1.kg-1,耗氧率峰值(Vo2peak)为(8.36±0.26)^(10.39±0.44)mg.min-.1kg-1,运动后过量耗氧(EPOC)总量为(66.31±6.37)^(88.89±4.61)mg.kg-1。力竭运动后20~30min耗氧率可达一稳定状态,经24h恢复回落到运动前水平。无论间隔时间长短,各处理组第二次力竭运动均导致恢复速率的显著增加(p<0.05),但耗氧峰值和恢复过程的过量耗氧没有显著变化。研究提示力竭性运动能诱导出南方鲇幼鱼的最大耗氧率。The paper is to investigate the repeating locomotive capacity of warmwater sit-and-wait southern catfish （ Silurus meridionalis Chen） and to test whether post-exercise recovery status has some effects on the next bout of exhaustive exercise metabolic recovery process. The oxygen consumption （ Vo2 ） of juvenile southern catfish （ 17.64 - 48.21 g, n = 40 ） after repetitive bouts of exhaustive exercise （widely accepted hand-chasing method） with different intervals （10 min interval for a series of 3 bouts, 30 min interval for a series of 2 bouts and 24 h interval for a series of 2 bouts） was investigated at （25.0 ± 1.0） ℃ by using flow through respirometer made by laboratory of evolutionary physiology and behaviour （ Patent No. ZL 200520010481.0 ）. The resting oxygen consumption rate （Vo2rest） is （2.39 ±0.13） to （2.83 ±0.31） mg · min^-1 · kg^-1 , the peak oxygen consumption rate （ Vo2peak ） is （8.36 ±0.26） to （ 10.39 ± 0.44） · min^-1 · kg^-1 and the magnitude of EPOC is （66.31 ±6.37 ） to （ 88.89 ± 4.61 ） mg·kg^-1. It is found that oxygen consumption can reach a relative stable status at 20 - 30 min after exhaustive exercise. The pre-exercise status can achieve after 24 h recovery. The recovery rates of post-exercise oxygen consumption are higher in the second and the third bouts of exhaustive exercise compared with the first bout in all interval treatments. However, there are no significant differences in peak oxygen consumption and EPOC magnitude among different bouts of exhaustive exercise. It suggests that exhaustive exercise can elicit the maximum oxygen consumption in juvenile southern catfish.

关 键 词：力竭运动 过量耗氧 南方鲇 

分 类 号：Q493.8[生物学—生理学]