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An aerodynamic perspective on hurricane-induced selection on Anolis lizards
Functional Ecology ( IF 4.6 ) Pub Date : 2021-05-30 , DOI: 10.1111/1365-2435.13848 Shamil F. Debaere 1 , Colin M. Donihue 2, 3 , Anthony Herrel 1, 4 , Sam Van Wassenbergh 1
中文翻译：
飓风引起的 Anolis 蜥蜴选择的空气动力学观点
更新日期：2021-05-30
Functional Ecology ( IF 4.6 ) Pub Date : 2021-05-30 , DOI: 10.1111/1365-2435.13848 Shamil F. Debaere 1 , Colin M. Donihue 2, 3 , Anthony Herrel 1, 4 , Sam Van Wassenbergh 1
Affiliation
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- Studies have demonstrated that hurricanes can drive selection in Neotropical anoles. In a recent study, it was shown that post-hurricane survivors showed longer toepad areas and, surprisingly, shorter femurs.
- One potential explanation for the reduction in femur length is that increased drag on individuals with longer femurs causes them to be blown off their perch. Consequently, lizards with shorter femora might survive better in hurricanes.
- To gain insight into the form–function relationships of drag reduction in perched lizards exposed to high-velocity winds, we quantified drag forces on Anolis lizard models in realistic grasping positions using computational fluid dynamics.
- We showed that overall drag, as well as the relatively high drag at the hindlimbs strongly increase with the distance of the pelvic region from the perch. As optimal postures to resist sustained arboreal pulling involve extended limbs, longer hindlimbs increase the chance of having the limbs and pelvic region positioned outside the zone in which efficient shielding from the wind by the perch occurs.
- Our study underlines the complexity of performance trade-offs on the evolution of limb morphology in arboreal lizards, and emphasizes the importance of generally ignored functions such as aerodynamic drag reduction in arboreal ecosystems.
中文翻译：
飓风引起的 Anolis 蜥蜴选择的空气动力学观点
- 研究表明，飓风可以推动新热带 anoles 的选择。最近的一项研究表明，飓风后幸存者的脚趾垫区域更长，令人惊讶的是，股骨更短。
- 股骨长度减少的一种可能解释是，股骨较长的个体受到的阻力增加导致他们被吹离栖木。因此，股骨较短的蜥蜴可能在飓风中生存得更好。
- 为了深入了解暴露在高速风中的栖息蜥蜴的减阻形式 - 函数关系，我们使用计算流体动力学量化了Anolis蜥蜴模型在真实抓握位置上的阻力。
- 我们表明，随着骨盆区域与鲈鱼的距离增加，整体阻力以及后肢相对较高的阻力显着增加。由于抵抗持续树栖拉力的最佳姿势涉及伸展的四肢，因此更长的后肢增加了四肢和骨盆区域位于鲈鱼有效遮挡风的区域之外的机会。
- 我们的研究强调了树栖蜥蜴肢体形态进化的性能权衡的复杂性，并强调了通常被忽视的功能的重要性，例如在树栖生态系统中减少空气动力学阻力。
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