LOCOMOTOR COMPENSATION CREATES A MISMATCH BETWEEN LABORATORY AND FIELD ESTIMATES OF ESCAPE SPEED IN LIZARDS: A CAUTIONARY TALE FOR PERFORMANCE‐TO‐FITNESS STUDIES
LOCOMOTOR COMPENSATION CREATES A MISMATCH BETWEEN LABORATORY AND FIELD ESTIMATES OF ESCAPE SPEED IN LIZARDS: A CAUTIONARY TALE FOR PERFORMANCE‐TO‐FITNESS STUDIES
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DOI：
10.1111/j.0014-3820.2005.tb01807.x
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发表时间：
2005-07
期刊：
影响因子：
3.3
通讯作者：
D. Irschick;A. Herrel;B. Vanhooydonck;Katleen Huyghe;R. Damme
中科院分区：
文献类型：
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作者：
D. Irschick;A. Herrel;B. Vanhooydonck;Katleen Huyghe;R. Damme
运动适应的进化研究中的一个关键假设是，标准的实验室性能测量准确地反映了动物在自然环境下的行为。一个被广泛研究的性能指标是最大冲刺速度，这被认为是躲避捕食者，捕获猎物和保卫领土的重要因素。以前的研究将最大冲刺速度与健身联系起来，主要集中在实验室测量上，我们建议这种分析可能适用于某些物种和种内类，但不适用于其他物种。我们提供的证据，最大的实验室冲刺速度和动物使用的最大容量的百分比，从现场的威胁（运动补偿模型）逃离时，一般呈反比关系。此外，绝对值的字段逃逸速度和最大实验室速度没有显着相关时，比较不同的组的阿诺利斯蜥蜴和蜥蜴。我们表明，这种模式的运动补偿举行内（即，种内纲之间）和蜥蜴物种之间（有一些例外）。我们提出了一种简单的方法，在物种和/或种内类之间绘制野外逃逸速度（y轴）与最大实验室速度（x轴），使研究人员能够确定他们的研究生物是否是将实验室性能与适应性联系起来的良好候选者。我们认为，直接居住在，或附近的“最佳健身线”（现场逃逸速度=最大实验室速度）的物种是最有可能结出果实，这样的研究。
Abstract A key assumption in evolutionary studies of locomotor adaptation is that standard laboratory measures of performance accurately reflect what animals do under natural circumstances. One widely examined measure of performance is maximum sprint speed, which is believed to be important for eluding predators, capturing prey, and defending territories. Previous studies linking maximum sprint speed to fitness have focused on laboratory measurements, and we suggest that such analyses may be appropriate for some species and intraspecific classes, but not others. We provide evidence for a general inverse relationship between maximum laboratory sprint speed and the percentage of maximum capacity that animals use when escaping from a threat in the field (the model of locomotor compensation). Further, absolute values of field escape speed and maximum laboratory speed are not significantly related when comparing across a diverse group of Anolis and lacertid lizards. We show that this pattern of locomotor compensation holds both within (i.e., among intraspecific classes) and among lizard species (with some exceptions). We propose a simple method of plotting field escape speed (y‐axis) versus maximum laboratory speed (x‐axis) among species and/or intraspecific classes that allows researchers to determine whether their study organisms are good candidates for relating laboratory performance to fitness. We suggest that species that reside directly on, or near the “best fitness line”(field escape speed = maximum laboratory speed) are most likely to bear fruit for such studies.