Temperature-Dependent Sex Determination in Sea Turtles in the Context of Climate Change: Uncovering the Adaptive Significance.,BioEssays

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Temperature-Dependent Sex Determination in Sea Turtles in the Context of Climate Change: Uncovering the Adaptive Significance.
BioEssays ( IF 3.2 ) Pub Date : 2020-09-08 , DOI: 10.1002/bies.202000146
Pilar Santidrián Tomillo ₁ , James R Spotila ₂

Affiliation

The adaptive significance of temperature‐dependent sex determination (TSD) in reptiles remains unknown decades after TSD was first identified in this group. Concurrently, there is growing concern about the effect that rising temperatures may have on species with TSD, potentially producing extremely biased sex ratios or offspring of only one sex. The current state‐of the‐art in TSD research on sea turtles is reviewed here and, against current paradigm, it is proposed that TSD provides an advantage under warming climates. By means of coadaptation between early survival and sex ratios, sea turtles are able to maintain populations. When offspring survival declines at high temperatures, the sex that increases future fecundity (females) is produced, increasing resilience to climate warming. TSD could have helped reptiles to survive mass extinctions in the past via this model. Flaws in research on sex determination in sea turtles are also identified and it is suggested that the development of new techniques will revolutionize the field.

中文翻译：

气候变化背景下海龟的温度依赖性性别决定：揭示适应性意义。

在该组首次发现 TSD 几十年后，爬行动物温度依赖性性别决定 (TSD) 的适应性意义仍然未知。与此同时，人们越来越担心气温升高可能对 TSD 物种产生影响，这可能会产生极度偏向的性别比例或只有一种性别的后代。这里回顾了海龟 TSD 研究的最新进展，与当前的范式相反，有人提出 TSD 在气候变暖的情况下具有优势。通过早期存活率和性别比例之间的共同适应，海龟能够维持种群。当后代存活率在高温下下降时，会产生增加未来生育能力的性别（雌性），从而增强对气候变暖的适应能力。TSD 可以通过这个模型帮助爬行动物在过去的大规模灭绝中幸存下来。还发现了海龟性别决定研究中的缺陷，并建议新技术的发展将彻底改变该领域。

更新日期：2020-10-22

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