4.5 Article

Large-scale evolution of body temperatures in land vertebrates

期刊

EVOLUTION LETTERS
卷 5, 期 5, 页码 484-494

出版社

OXFORD UNIV PRESS
DOI: 10.1002/evl3.249

关键词

Body temperature; diel activity; endothermy; evolution; niche conservatism; phylogeny; physiology; vertebrate

资金

  1. Foundation for Science and Technology, Portugal [PD/BD/135554/2018]
  2. FCT/MCTES [UIDP/50017/2020+UIDB/50017/2020]
  3. U.S. National Science Foundation [DEB 1655690]
  4. Fundação para a Ciência e a Tecnologia [PD/BD/135554/2018] Funding Source: FCT

向作者/读者索取更多资源

The study found that there is no significant difference in body temperature between endothermic and ectothermic animals, but their rates of body temperature evolution and day-night activity patterns differ significantly. Body temperatures in terrestrial vertebrates exhibit strong phylogenetic signal and are often related to day-night activity patterns rather than climate.
Body temperature is a crucial variable in animals that affects nearly every aspect of their lives. Here we analyze for the first time largescale patterns in the evolution of body temperatures across terrestrial vertebrates (tetrapods: including amphibians, mammals, birds and other reptiles). Despite the traditional view that endotherms (birds and mammals) have higher body temperatures than ectotherms, we find they are not significantly different. However, rates of body-temperature evolution are significantly different, with lower rates in endotherms than ectotherms, and the highest rates in amphibians. We find that body temperatures show strong phylogenetic signal and conservatism over 350 million years of evolutionary history in tetrapods, and some lineages appear to have retained similar body temperatures over time for hundreds of millions of years. Although body temperatures are often unrelated to climate in tetrapods, we find that body temperatures are significantly related to day-night activity patterns. Specifically, body temperatures are generally higher in diurnal species than nocturnal species, both across ectotherms and, surprisingly, across endotherms also. Overall, our results suggest that body temperatures are significantly linked to phylogeny and diel-activity patterns within and among tetrapod groups, rather than just climate and the endotherm-ectotherm divide.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.5
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据