Recent advances on the estimation of the thermal reaction norm for sex ratios
Recent advances on the estimation of the thermal reaction norm for sex ratios
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DOI：
10.7717/peerj.8451
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发表时间：
2020-03-04
期刊：
影响因子：
2.7
通讯作者：
Girondot, Marc
中科院分区：
文献类型：
--
作者：
Alberto Abreu-Grobois, F.;Alejandra Morales-Merida, B.;Girondot, Marc
温度依赖性性别决定，或TSD，是爬行动物中普遍存在的现象。恒温孵育温度和性比之间的关系的形状定义了TSD模式。TSD模式被认为是一个生活史参数重要的保护，因为更广泛的温度范围内产生的两性，更有弹性的物种是气候变化的影响。我们回顾了不同的出版的方程和方法，已被用来模拟TSD模式。我们描述了一个新的灵活的模型，允许一个不对称的模式周围的关键温度，这是恒定的温度产生两性平等的比例。我们表明，大都会黑斯廷斯与马尔可夫链产生的蒙特卡罗过程相比，最大似然有许多优点，是首选。最后，我们应用该模型的孵化实验结果，从海龟Lepidochelys olivacea起源于印度东北部，东太平洋，西大西洋区域管理单位（RMU）的鸡蛋，并发现很大的差异，关键的温度，但不是在过渡范围内的温度。
Temperature-dependent sex determination, or TSD, is a widespread phenomenon in reptiles. The shape of the relationship between constant incubation temperature and sex ratio defines the TSD pattern. The TSD pattern is considered a life-history parameter important for conservation because the wider the range of temperatures producing both sexes, the more resilient the species is to climate change impacts. We review the different published equations and methodologies that have been used to model TSD patterns. We describe a new flexible model that allows for an asymmetrical pattern around the pivotal temperature, which is the constant temperature producing both sexes in equal proportions. We show that Metropolis-Hastings with Markov chain produced by a Monte Carlo process has many advantages compared to maximum likelihood and is preferred. Finally, we apply the models to results from incubation experiments using eggs from the marine turtle Lepidochelys olivacea originating in Northeast Indian, East Pacific, and West Atlantic Regional Management Units (RMUs) and find large differences in pivotal temperatures but not in transitional ranges of temperatures.