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发育模式 底层形式和功能的变化 展现的房子壁 脚 脚

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  • 1Department of Chemical and Biological Engineering, Princeton University, Princeton, NJ 08544, USA.

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科学领域:

  • 进化生物学是进化的生物学.
  • 发育生物学是发展生物学.
  • 生物力学 生物力学

背景情况:

  • 粘着的脚在身上已经独立地进化了多次,甲就是一个很好的例子.
  • 虽然早期的脚发育在远距离相关的物种中得到保护,但成年人的形态却有很大的差异.

研究的目的:

  • 调查粘合型脚的形态和功能变异如何在单个进化起源 (屋子,Hemidactylus) 中出现.
  • 在三种不同息地偏好的海米达克提勒斯物种中,将发育模式与功能表现相关联.

主要方法:

  • 在三种Hemidactylus物种 (H. platyurus,H. turcicus,H. imbricatus) 中对脚形态和粘合力的比较分析.
  • 检查脚形态发生的胚胎发育模式.

主要成果:

  • 与H. turcicus和H. imbricatus相比,Hemidactylus platyurus的粘合力显著更大,脚面积更大.
  • 胚胎发育期间脚延伸阶段时间的变化与成人形态差异有关.

结论:

  • 像子脚这样的复杂结构中的形态变异可以通过单个进化谱系内的发育时间的改变来产生.
  • 脚形态发生过程中的发育可塑性直接影响功能结果,例如粘合能力.