The scratch-digging lifestyle of the Permian “microsaur” Batropetes Carroll & Gaskill, 1971 as a model for the exaptative origin of jumping locomotion in frogs

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2022-07-06 DOI:10.5852/cr-palevol2022v21a23

undefined Maren JANSEN, D. Marjanović

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引用次数: 1

Abstract

Recent studies have shown that the Triassic stem-frog Triadobatrachus Kuhn, 1962 lacked the ability to jump, but nonetheless had the forelimb strength to withstand the impact of landing from a jump. We propose a hypothesis to resolve this pseudoparadox: the strengthened forelimbs are former adaptations to forelimb-based digging that later made jumping possible by exaptation. Micro-CT data from a skeleton of Batropetes palatinus Glienke, 2015 reveal thin cortical bone, confirming Batropetes Carroll & Gaskill, 1971 as terrestrial. Combining adaptations to walking and digging, confirmed by statistical analyses, Batropetes is thought to have searched for food in leaf litter or topsoil. We interpret Batropetes as having used one forelimb at a time to shove leaf litter aside. Batropetes may thus represent an analog, or possibly a homolog, of the digging stage that preceded the origin of Salientia Laurenti, 1768. We discuss the possibility of homology with the digging lifestyles of other “microsaurs” and other amphibians.

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二叠纪“微型恐龙”Batropetes (Carroll & Gaskill, 1971)的抓挠式生活方式，作为青蛙跳跃运动的意外起源的模型

最近的研究表明，三叠纪的茎蛙Triadobatrachus Kuhn, 1962缺乏跳跃的能力，但它的前肢力量足以承受跳跃着陆的冲击。我们提出了一个假设来解决这个伪悖论:增强的前肢是对前肢为基础的挖掘的前适应，后来通过脱位使跳跃成为可能。2015年Batropetes palatinus Glienke骨骼的显微ct数据显示薄的皮质骨，证实了Batropetes Carroll & Gaskill, 1971年为陆生动物。结合对行走和挖掘的适应，经统计分析证实，蝙蝠兽被认为在落叶层或表土中寻找食物。我们把蝙蝠兽解释为一次只用一个前肢把落叶推到一边。因此，蝙蝠兽可能代表了一种类似物，或者可能是同源物，在1768年，在劳伦斯的起源之前的挖掘阶段。我们讨论了与其他“微龙”和其他两栖动物的挖掘生活方式同源的可能性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.