Is Heterochrony Still an Effective Paradigm for Contemporary Studies of Evo-devo?
Is Heterochrony Still an Effective Paradigm for Contemporary Studies of Evo-devo?
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DOI：
10.1007/978-94-017-9412-1_4
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发表时间：
2015-01-01
期刊：
影响因子：
--
通讯作者：
Hanken, James
中科院分区：
文献类型：
--
作者：
Hanken, James
异时性，或发育事件相对时间的变化，甚至在19世纪中期创造这个术语之前，就一直是研究进化和发展之间关系的主导概念。它的流行始于20世纪70年代末和80年代，作为对Evo-Devo兴趣的一部分，也是在那时开始的，反映了一个基本的前提，即异时性分析对于有意义地理解和解释形态多样性是必不可少的。然而，人们逐渐认识到，构成形态进化基础的分子和发育机制可能会从其他过程中得到更有效的理解，这使得异时性作为一种解释工具的普遍性越来越有资格。因此，尽管异时性在当代的Evo-Devo研究中仍然发挥着重要的作用，但它并不是一个包罗万象和排他性的作用。相反，对异时性的更细微的看法--作为一个重要的范式，但不是唯一的范式--提供了对进化变化的发展基础的更全面的描述和理解。
Heterochrony, or change in the relative timing of developmental events, has been a dominant concept in the study of the relation between evolution and development since even before the term was coined in the mid-nineteenth century. Its popularity exploded beginning in the late 1970s and 1980s as part of the resurgence of interest in Evo-devo that also began at that time, and reflecting a basic premise that heterochronic analysis is indispensible to a meaningful understanding and explanation of morphological diversification. Yet the gradual recognition that the molecular and developmental mechanisms that underlie morphological evolution may be understood more effectively in terms of other processes has increasingly qualified the universality of heterochrony as an explanatory tool. Consequently, while heterochrony still has an important role to play in contemporary studies of Evo-devo, it is not an all-encompassing and exclusive role. Instead, a more nuanced view of heterochrony—as an important paradigm, but not the sole paradigm—provides a more comprehensive depiction and understanding of the developmental basis of evolutionary change.