Comparisons of swimming performance in rainbow trout using constant acceleration and critical swimming speed tests
Comparisons of swimming performance in rainbow trout using constant acceleration and critical swimming speed tests
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DOI：
10.1111/j.1095-8649.2007.01759.x
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发表时间：
2008-02-01
影响因子：
2
通讯作者：
Farrell, A. P.
中科院分区：
文献类型：
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作者：
Farrell, A. P.
最大游泳性能的季节性驯化虹鳟鱼mykiss之间的短时间恒定加速度测试（U-max），并与成熟的，但持续时间较长的临界游泳速度（U-crit）测试进行了比较。目前的研究结果表明，U-max是不敏感的加速度范围内的差异超过三倍。因此，测试持续时间可从58分钟减少到18分钟，而不影响U-max的估计值。然而，U-max的值比U-crit高出57%。（每分钟增加1 cm s（-1））的U-max明显较低，比U-crit高出19%。即便如此，当与斜坡-U-临界值试验（标准U-临界值试验，但水速度最初斜坡至c.估计的U临界值的50%）。因此，游泳测试的持续时间明显短于一个斜坡-U-crit测试的结果在U-max明显大于U-crit。一个额外的发现是，冷驯化虹鳟鱼的斜坡-U-crit性能是独立的测试之间的恢复期。这些结果可能被证明是有用的，在不同的游泳测试协议之间进行比较，并在设计游泳测试，评估鱼类健康和毒理学影响。(c)2008年，《中华人民共和国电信与信息服务业务经营许可证》（以下简称《电信与信息服务业务经营许可证》）。
Maximum swimming performance of seasonally acclimated rainbow trout Oncorhynchus mykiss was compared among short-duration constant acceleration tests (U-max) and with the well established, but longer duration critical swimming speed (U-crit) test. The present results show that U-max was insensitive to a range of acceleration rates that differed by more than three-fold. Thus, test duration could be reduced from 58 to 18 min without affecting the estimate of U-max. The value of U-max, however, was up to 57% higher than U-crit. Only the slowest acceleration rate tested (an increase of 1 cm s(-1) every min) had a significantly lower U-max, and this was up to 19% higher than U-crit. Even so, the potential saving in the test duration was small (70 v. 90 min) when compared with a ramp-U-crit test (a standard U-crit test but with the water velocity initially ramped to c. 50% of the estimated U-crit). Therefore, swim tests that are appreciably shorter in duration than a ramp-U-crit test result in U-max being appreciably greater than U-crit. An additional discovery was that the ramp-U-crit performance of cold-acclimated rainbow trout was independent of the recovery period between tests. These results may prove useful in making comparisons among different swim test protocols and in designing swim tests that assess fish health and toxicological impacts. (c) 2008 The Author Journal compilation (c) 2008 The Fisheries Society of the British Isles.