进化：重回盐海中的沉重骨骼。

Evolution: Back to heavy bones in salty seas.

机构信息

Département Adaptations du vivant, UMR 7179 CNRS/Muséum National d'Histoire Naturelle, 57 rue Cuvier CP-55, 75005 Paris, France.

出版信息

Curr Biol. 2022 Jan 10;32(1):R42-R44. doi: 10.1016/j.cub.2021.11.049.

DOI:10.1016/j.cub.2021.11.049

PMID:35015995

Abstract

In amniote vertebrates that transitioned from land to sea, bone mass typically increases and later decreases as active swimming evolves. A new study now has found that heavy bones re-evolved in some fossil marine mammals, suggesting that this trajectory can be reversed.

摘要

在从陆地过渡到海洋的羊膜动物中，随着主动游泳的进化，骨量通常先增加后减少。一项新的研究现在发现，一些化石海洋哺乳动物中重新进化出了沉重的骨骼，这表明这种轨迹是可以逆转的。