Phenotype in lizards is related to reproductive function, and hence to reproductive output. Besides the intraspecific diversity in phenotypes, their temporal variation throughout the reproductive season in relation to the variation of social contexts builds extra complexity into sexual selection scenarios. One useful model for understanding phenotypic diversity dynamics is Tropidurus spinulosus because it presents sexual dimorphism in different phenotypic traits, dichromatism in regions related to reproductive behaviour, and it has intense social reproductive interactions. We aimed to evaluate how the reproductive and phenotypic traits of individuals vary with changing social contexts, and how intrasexual phenotypic diversity and reproductive potential are explained by the phenotypic traits. In this study, we used data obtained during four consecutive breeding seasons (2015–2018) in a wild population. The social context, characterized according to the operational sex ratio, varied between months and, therefore, some phenotypic and reproductive traits also varied. We found that body robustness and chromatic diversity were the main sources of phenotypic diversity and were related to reproductive traits in both sexes. Our results help to understand the dynamics and reproductive implications of phenotypic diversity in changing social contexts in a lizard social model.

中文翻译：

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蜥蜴模型中表型多样性及其在变化的社会环境中与生殖潜力的关系

蜥蜴的表型与生殖功能有关，因此与生殖产出有关。除了表型的种内多样性外，它们在整个繁殖季节的时间变化（与社会环境的变化有关）使性选择场景更加复杂。一种了解表型多样性动态的有用模型是棘皮长螺旋体因为它在不同的表型性状中表现出性二态性，在与生殖行为有关的区域中表现出二色性，并且与社会生殖之间存在着强烈的相互作用。我们旨在评估个体的生殖和表型特征如何随社会背景的变化而变化，以及表型特征如何解释性内表型多样性和生殖潜力。在这项研究中，我们使用了野生种群在四个连续繁殖季节（2015-2018）期间获得的数据。根据工作性别比而定的社会背景在几个月之间有所不同，因此，某些表型和生殖性状也有所不同。我们发现，身体健壮性和色度多样性是表型多样性的主要来源，并且与两性的生殖特性有关。