Constancy in an Inconstant World: Moving Beyond Constant Temperatures in the Study of Reptilian Incubation
Constancy in an Inconstant World: Moving Beyond Constant Temperatures in the Study of Reptilian Incubation
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DOI：
10.1093/icb/icu016
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发表时间：
2014-11-01
影响因子：
2.6
通讯作者：
Paitz, Ryan T.
中科院分区：
文献类型：
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作者：
Bowden, Rachel M.;Carter, Amanda W.;Paitz, Ryan T.
多变的环境条件可以改变后代的表型，特别是在变温动物如爬行动物中。尽管如此，大多数关于爬行动物发育的研究都是在实验室的恒定条件下进行的，这就提出了一个问题，即这些研究在自然条件下的适用性如何？在这里，我们首先回顾一下我们从这些恒温研究中学到了什么。其次，我们研究了温度波动对爬行动物发育的重要性，并强调了在波动条件下进行的研究结果。接下来，我们报告了一项新研究的发现，该研究探讨了发育过程中温度波动的频率如何影响表型。最后，我们提出了一些需要进一步研究的领域，以便我们能够更好地了解温度和生理学的复杂相互作用，特别是在具有温度依赖性性别决定的物种中。对于旨在理解环境对表型的复杂影响的问题，我们必须转向更好地捕捉环境变化的研究。通过采取这种方法，有可能更准确地预测这些热敏感生物将如何应对环境扰动，包括气候变化。
Variable environmental conditions can alter the phenotype of offspring, particularly in ectothermic species such as reptiles. Despite this, the majority of studies on development in reptiles have been carried out under constant conditions in the laboratory, raising the question of just how applicable those investigations are to natural conditions? Here, we first review what we have learned from these constant-temperature studies. Second, we examine the importance of temperature fluctuations for development in reptiles and highlight the outcomes of studies conducted under fluctuating conditions. Next, we report our findings from a new study that examines how the frequency of fluctuations in temperature experienced during development affects phenotype. Finally, we suggest some areas in need of additional research so that we can better understand the complex interactions of temperature and physiology, particularly in species with temperature-dependent sex determination. For questions aimed at understanding the complex effects of the environment on phenotype, we must move toward studies that better capture environmental variation. By taking such an approach, it may be possible to predict more accurately how these thermally sensitive organisms will respond to environmental perturbations, including climatic change.