Departamento de Biología Celular y Fisiología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad Universitaria, Apartado Postal 70228 México, D.F. 04510, Mexico.
Departamento de Biología Celular y Fisiología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad Universitaria, Apartado Postal 70228 México, D.F. 04510, Mexico.
J Therm Biol. 2019 Oct;85:102400. doi: 10.1016/j.jtherbio.2019.102400. Epub 2019 Aug 22.
A number of strategies have emerged that appear to relate to the evolution of mechanisms for sexual determination in vertebrates, among which are genetic sex determination caused by sex chromosomes and environmental sex determination, where environmental factors influence the phenotype of the sex of an individual. Within the reptile group, some orders such as: Chelonia, Crocodylia, Squamata and Rhynchocephalia, manifest one of the most intriguing and exciting environmental sexual determination mechanisms that exists, comprising temperature-dependent sex determination (TSD), where the temperature of incubation that the embryo experiences during its development is fundamental to establishing the sex of the individual. This makes them an excellent model for the study of sexual determination at the molecular, cellular and physiological level, as well as in terms of their implications at an evolutionary and ecological level. There are different hypotheses concerning how this process is triggered and this review aims to describe any new contributions to particular TSD hypotheses, analyzing them from the "eco-evo-devo" perspective.
出现了许多策略，这些策略似乎与脊椎动物性别决定机制的进化有关，其中包括性染色体引起的遗传性别决定和环境性别决定，其中环境因素影响个体性别的表型。在爬行动物群体中，一些目如：Chelonia、Crocodylia、Squamata 和 Rhynchocephalia，表现出最有趣和令人兴奋的环境性别决定机制之一，包括温度依赖性性别决定（TSD），其中胚胎在发育过程中经历的孵化温度对于确定个体的性别至关重要。这使它们成为研究分子、细胞和生理水平性别决定以及进化和生态水平上的性别决定的理想模型。关于这个过程是如何引发的有不同的假设，本综述旨在描述对特定 TSD 假设的任何新贡献，并从“生态-进化-发育”的角度对其进行分析。
