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Differing effects of size and lifestyle on bone structure in mammals

 
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Manage episode 288621309 series 2902310
内容由MultiModal LLC and Multimodal LLC提供。所有播客内容(包括剧集、图形和播客描述)均由 MultiModal LLC and Multimodal LLC 或其播客平台合作伙伴直接上传和提供。如果您认为有人在未经您许可的情况下使用您的受版权保护的作品,您可以按照此处概述的流程进行操作https://zh.player.fm/legal
Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.08.13.249128v1?rss=1 Authors: Amson, E., Bibi, F. Abstract: The skeleton is involved in most aspects of vertebrate life history. Previous macroevolutionary analyses have shown that structural, historical, and functional factors influence the gross morphology of bone. The inner structure of bone has, however, received comparatively little attention. Here we address this gap in our understanding of vertebrate evolution by quantifying bone structure in appendicular and axial elements (humerus and mid-lumbar vertebra) across therian mammals (placentals + marsupials). Our sampling captures all transitions to aerial, fully aquatic, and subterranean lifestyles in extant mammal clades. We found that mammalian inner bone structure is highly disparate. We show that vertebral structure mostly correlates with body size, but not lifestyle, while the opposite is true for humeral structure. The latter also shows a high degree of convergence among the clades that have acquired specialised lifestyles. Our results suggest that radically different extrinsic constraints can apply to bone structure in different skeletal elements. Copy rights belong to original authors. Visit the link for more info
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已归档的系列专辑 ("不活跃的收取点" status)

When? This feed was archived on December 15, 2021 15:07 (2+ y ago). Last successful fetch was on March 29, 2021 12:55 (3y ago)

Why? 不活跃的收取点 status. 我们的伺服器已尝试了一段时间,但仍然无法截取有效的播客收取点

What now? You might be able to find a more up-to-date version using the search function. This series will no longer be checked for updates. If you believe this to be in error, please check if the publisher's feed link below is valid and contact support to request the feed be restored or if you have any other concerns about this.

Manage episode 288621309 series 2902310
内容由MultiModal LLC and Multimodal LLC提供。所有播客内容(包括剧集、图形和播客描述)均由 MultiModal LLC and Multimodal LLC 或其播客平台合作伙伴直接上传和提供。如果您认为有人在未经您许可的情况下使用您的受版权保护的作品,您可以按照此处概述的流程进行操作https://zh.player.fm/legal
Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.08.13.249128v1?rss=1 Authors: Amson, E., Bibi, F. Abstract: The skeleton is involved in most aspects of vertebrate life history. Previous macroevolutionary analyses have shown that structural, historical, and functional factors influence the gross morphology of bone. The inner structure of bone has, however, received comparatively little attention. Here we address this gap in our understanding of vertebrate evolution by quantifying bone structure in appendicular and axial elements (humerus and mid-lumbar vertebra) across therian mammals (placentals + marsupials). Our sampling captures all transitions to aerial, fully aquatic, and subterranean lifestyles in extant mammal clades. We found that mammalian inner bone structure is highly disparate. We show that vertebral structure mostly correlates with body size, but not lifestyle, while the opposite is true for humeral structure. The latter also shows a high degree of convergence among the clades that have acquired specialised lifestyles. Our results suggest that radically different extrinsic constraints can apply to bone structure in different skeletal elements. Copy rights belong to original authors. Visit the link for more info
  continue reading

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