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首页> 外文期刊>Canadian Journal of Zoology >Effect of recovery parameters on critical swimming speed of juvenile rainbow trout (Oncorhynchus mykiss)
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Effect of recovery parameters on critical swimming speed of juvenile rainbow trout (Oncorhynchus mykiss)

机译：恢复参数对幼体虹鳟临界游泳速度的影响

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摘要

Critical swimming speed (U-crit) is commonly measured to evaluate the influence of particular parameters on the swimming ability and physiological status of fish. Prior to experiments, fish are often forced to swim at low speed for a period of time to allow them to recover from handling stress. In the past, recovery times and speeds have varied from study to study but their possible effects on U-crit have not been thoroughly examined. Therefore, hatchery-reared juvenile rainbow trout (Oncorhynchus mykiss) were forced to swim at a velocity of 26.5 cm/s for 0, 0.5, 1, 2, 4, 8, or 16 h or at a velocity of 0, 17.0, 21.8, 26.5, 36.0, or 45.5 cm/s for 0.5 h prior to being subjected to the U-crit protocol (5-min intervals and 2.5 cm/s increments were used). Fish were tested at 6 and 18 degrees C. Mean U-crit, values were independent of recovery time and speed at both temperatures, suggesting that the recovery phase of the protocol may not be required and that inconsistencies in U-crit values among studies are probably not attributable to differences in recovery parameters used.
机译：通常测量临界游泳速度（U-crit）以评估特定参数对鱼类游泳能力和生理状态的影响。在进行实验之前，通常会迫使鱼类低速游泳一段时间，以使它们从应对压力中恢复过来。过去，恢复时间和速度因研究的不同而异，但是它们对U暴的可能影响尚未得到彻底检查。因此，孵化场饲养的幼体虹鳟（Oncorhynchus mykiss）被迫以26.5 cm / s的速度游泳0、0.5、1、2、4、8或16小时，或以0、17.0、21.8的速度游泳进行U-crit方案之前，请先以26.5、36.0或45.5 cm / s的速度持续0.5小时（使用5分钟间隔和2.5 cm / s增量）。在6和18摄氏度下对鱼进行了测试。在两个温度下，U临界值的平均值与恢复时间和速度无关，这表明协议的恢复阶段可能不是必需的，并且研​​究之间的U临界值不一致是可能不是归因于所使用的恢复参数的差异。

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