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A Morphological Method to Approximate Jumping Performance in Anurans for Macroevolutionary Studies
Evolutionary Biology ( IF 2.5 ) Pub Date : 2020-07-17 , DOI: 10.1007/s11692-020-09509-7
Bryan H. Juarez , Daniel S. Moen , Dean C. Adams

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.

中文翻译:

宏观进化研究中近似无脊椎动物跳跃性能的形态学方法

生物性能通常是理解宏观进化模式的关键,但是表征多种物种的性能却具有挑战性,因为分类单元的不同地理位置通常会禁止体内措施。但是,从理论上讲,可以使用性能参数的解剖学近似来研究有关性能演变的推论,从而可以对更广泛的物种进行采样。在这项研究中,我们使用生物学和物理原理从数学上推导三种尺寸标准化的解剖学近似值,以用于无尾翼起飞时跳跃性能的三个不同方面:峰值跳跃速度,能量和功率。我们还描述了几种方法来使用例如腿长,腿部肌肉质量和体重的测量参数化这些近似值。我们通过与直接尺寸标准化的标准比较来评估这些方法的效果,该标准测量了来自51种无环物种的256个人的跳跃表现。使用系统发生方法和非系统发生方法,我们发现三种解剖学近似值(速度和能量)中的两种与体内测量高度相关,而第三种(功效)却没有。这表明,前者可以作为跳跃性能的那些方面的可靠估计,而后者的近似值不能捕获无脊椎动物中跳跃能力的所有方面。我们还报告了近似的重要系统发育信号,如在体内测量中发现的。这些分析证明了在宏观进化研究中使用解剖学近似的效用。相对于体内实验室方法,
更新日期:2020-07-17
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