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生理发育时间的可塑性:生理异时性——它是什么,有多常见,以及重要吗?

Plasticity in the timing of physiological development: physiological heterokairy--what is it, how frequent is it, and does it matter?

作者信息

Spicer John I, Rundle Simon D

机构信息

Marine Biology and Ecology and Research Centre, School of Biological Sciences, University of Plymouth, Plymouth PL4 8AA, UK.

出版信息

Comp Biochem Physiol A Mol Integr Physiol. 2007 Dec;148(4):712-9. doi: 10.1016/j.cbpa.2007.05.027. Epub 2007 Jun 12.

Abstract

The study of developmental sequences of physiological traits could be an important way of placing comparative developmental physiology (CDP) within the research agenda being forged by work on developmental plasticity. Here we focus on the concept of heterokairy defined by Spicer & Burggren in 2003 as changes in the timing of physiological development in an individual. The role of this concept in the future of the CDP is discussed. First we provide an historical perspective of the ideas that have led to the investigation of sequences in CDP. This is followed by a re-examination and clarification of the definition of physiological heterokairy before empirical case studies that (explicitly or implicitly) demonstrate physiological heterokairy are reviewed. We suggest that physiological heterokairy can be demonstrated through a wide range of invertebrate and vertebrate examples. However, care must be taken when inferring that heterokairy as a pattern is always the result of heterokairic processes as there is evidence that physiological heterokairy could result from the altered timing of both homologous or analogous physiological mechanisms. We conclude by discussing the potential link between heterokairy and heterochrony and suggest that the investigation of this link should be a major goal for workers in both CDP and developmental plasticity.

摘要

对生理特征发育序列的研究,可能是将比较发育生理学(CDP)纳入由发育可塑性研究推动的研究议程的重要途径。在此,我们聚焦于斯派塞和伯格伦在2003年定义的异时性概念,即个体生理发育时间的变化。讨论了这一概念在CDP未来发展中的作用。首先,我们对引发CDP中序列研究的观点进行历史回顾。接着,在回顾(明确或隐含)证明生理异时性的实证案例研究之前,重新审视并阐明生理异时性的定义。我们认为,通过广泛的无脊椎动物和脊椎动物实例可以证明生理异时性。然而,在推断异时性作为一种模式总是异时性过程的结果时必须谨慎,因为有证据表明生理异时性可能源于同源或类似生理机制时间的改变。我们通过讨论异时性与异时发生之间的潜在联系来得出结论,并建议对这种联系的研究应成为CDP和发育可塑性领域研究人员的主要目标。

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