News Release

尾杆骨的发育起源

Peer-Reviewed Publication

Proceedings of the National Academy of Sciences

Lateral view of a metamorphosing tadpole (stage 64, Xenopus tropicalis), showing the developing urostyle.

image: Lateral view of a metamorphosing tadpole (stage 64, Xenopus tropicalis), showing the developing urostyle. view more 

Credit: Image Courtesy of Gayani Senevirathne

一项研究审视了蛙的尾杆骨的发育起源——这是在大约2亿年前进化出来的一个独特结构,随着尾部的退化、幼体的轴运动让位与成体的肢体驱动的运动而在变态过程中形成;该研究发现了甲状腺激素介导的成骨以及底索(这是尾杆骨的一个关键组成部分)的扩展在尾的消失、背主动脉的重新排列以及包括蛙在内的两栖类无尾目的发育体制的进化上起到了一个主要的作用。

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