Temperature fluctuations and maternal estrogens as critical factors for understanding temperature-dependent sex determination in nature.

Temperature fluctuations and maternal estrogens as critical factors for understanding temperature-dependent sex determination in nature.
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DOI:
10.1002/jez.2183
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发表时间:
2018-04
期刊:
Journal of experimental zoology. Part A, Ecological and integrative physiology
影响因子:
--
通讯作者:
Paitz RT
Paitz RT
中科院分区:
其他
文献类型:
--
作者:
Bowden RM;Paitz RT

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当涉及到气候变化的潜在影响时,具有温度相关性别决定(TSD)的脊椎动物理所当然地受到了很多关注。长期以来,淡水龟一直被用来描述TSD的生理和遗传机制,并提供了一个很好的系统来研究气候条件变化如何影响患有TSD的脊椎动物。不幸的是,我们所知道的大多数TSD的机制来自实验室条件,这些条件并不能准确地模拟自然条件(即恒定的孵化温度和超生理的类固醇操作)。在这篇文章中,我们回顾了我们对TSD在自然界中如何运作的最新进展,这些进展源于使用更自然的波动孵化温度和卵黄中母体雌激素的自然变异的研究。通过将更多的自然条件纳入实验室研究,我们能够更好地利用这些研究来预测气候条件的变化将如何影响患有TSD的物种。
Vertebrates with temperature-dependent sex determination (TSD) have justifiably received a lot of attention when it comes to the potential effects of climate change. Freshwater turtles have long been used to characterize the physiological and genetic mechanisms underlying TSD and provide a great system to investigate how changing climatic conditions will affect vertebrates with TSD. Unfortunately most of what we know about the mechanisms underlying TSD comes from laboratory conditions that do not accurately mimic natural conditions (i.e. constant incubation temperatures and super physiological steroid manipulations). In this paper, we review recent advances in our understanding of how TSD operates in nature that arose from studies using more natural fluctuating incubation temperatures and natural variation in maternal estrogens within the yolk. By incorporating more natural conditions into laboratory studies, we are better able to use these studies to predict how changing climatic conditions will affect species with TSD.
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