A Morphological Method to Approximate Jumping Performance in Anurans for Macroevolutionary Studies
A Morphological Method to Approximate Jumping Performance in Anurans for Macroevolutionary Studies
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DOI：
10.1007/s11692-020-09509-7
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发表时间：
2020-07
影响因子：
2.5
通讯作者：
Bryan H. Juarez;D. Moen;D. Adams
中科院分区：
文献类型：
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作者：
Bryan H. Juarez;D. Moen;D. Adams
生物体的表现通常是理解宏观进化模式的关键，但表征许多物种的表现是具有挑战性的，因为分类群不同的地理位置往往禁止活体测量。然而，在理论上，可以使用性能参数的解剖学近似来研究对性能演变的推断，从而允许对更广泛的物种进行采样。在这项研究中，我们利用生物学和物理学原理，对无尾两栖动物在起跳时的三个不同方面：最大跳跃速度、能量和功率，从数学上推导出三个尺寸标准化的解剖学近似。我们还描述了使用例如腿长、腿部肌肉质量和身体质量的测量来对这些近似值进行参数化的几种方法。我们通过对51种无尾两栖动物的256个个体的跳跃行为的直接尺寸标准化测量进行比较，来评估这些方法的有效性。使用系统发育和非系统发育方法，我们发现三个解剖学近似中的两个(速度和能量)与活体测量高度相关，而第三个(幂)不是。这表明，前者可以作为跳跃性能的这些方面的可靠估计，而后者的近似并不能涵盖无尾两栖动物跳跃能力的所有方面。我们还报告了在活体测量中发现的近似的重要系统发育信号。这些分析证明了解剖学近似在宏观进化研究中的实用性。与活体实验室方法相比，这种新方法允许对无尾两栖动物以及可能还有其他跳跃动物的跳跃性能进行广泛的基于博物馆的分类调查。
Organismal performance is often key in understanding macroevolutionary patterns but characterizing performance across many species is challenging, as the disparate geographic locations of taxa often prohibit in vivo measures. In theory, however, inferences on the evolution of performance could be investigated using anatomical approximations of performance parameters, allowing for a wider range of species to be sampled. In this study, we use biological and physical principles to mathematically derive three size-standardized anatomical approximations for three different aspects of jumping performance at take-off in anurans: peak jumping velocity, energy, and power. We also describe several ways to parameterize these approximations using, for example, measurements of leg length, leg muscle mass, and body mass. We evaluate the efficacy of these approaches via comparison with direct size-standardized measures of jumping performance across 256 individuals from 51 anuran species. Using both phylogenetic and non-phylogenetic approaches, we find that two of the three anatomical approximations (velocity and energy) are highly correlated with in vivo measures, while a third (power) is not. This reveals that the former may serve as reliable estimates of those aspects of jumping performance, while the latter approximation does not capture all aspects of jumping power in anurans. We also report significant phylogenetic signal for the approximations, as found in in vivo measures. These analyses demonstrate the utility of anatomical approximations for use in macroevolutionary studies. Relative to in vivo laboratory methods, this new method allows for broad museum-based taxonomic surveys of jumping performance in anurans and possibly other jumping animals.