Social structure can have significant effects on selection, affecting both individual fitness traits and population-level processes. As such, research into its dynamics and evolution has spiked in the last decade, where theoretical and computational advances in social network analysis have increased our understanding of its ecological and inheritance underpinnings. Yet, the processes that shape the formation of structure within social networks are poorly understood and the role of social avoidances unknown. Social avoidances are an alternate of social affiliation in animal societies, which, although invisible, likely play a role in shaping animal social networks. Assuming social avoidances evolve under similar constraints as affiliative behavior, we extended a previous model of social inheritance of affiliations to investigate the impact of social inheritance of avoidances on social network structure. We modeled avoidances as relationships that individuals can copy from their mothers or from their mother’s social environment and varied the degrees to which individuals inherit social affiliates and avoidances to test their combined influence on social network structure. We found that inheriting avoidances via maternal social environments made social networks less dense and more modular, thereby demonstrating how social avoidance can shape the evolution of animal social networks.

中文翻译：

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回避的社会遗传塑造了动物社交网络的结构

社会结构可以对选择产生重大影响，影响个体的适应性特征和种群水平的过程。因此，对其动力学和进化的研究在过去十年中激增，社交网络分析的理论和计算进步增加了我们对其生态和遗传基础的理解。然而，人们对社交网络内结构形成的过程知之甚少，社交回避的作用也不清楚。社交回避是动物社会中社会归属的一种替代形式，虽然看不见，但可能在塑造动物社交网络中发挥着作用。假设社交回避在与亲和行为类似的约束下演变，我们扩展了先前的亲和关系社会继承模型，以研究回避的社会继承对社交网络结构的影响。我们将回避建模为个人可以从母亲或母亲的社会环境中复制的关系，并改变个人继承社会附属关系和回避的程度，以测试它们对社交网络结构的综合影响。我们发现，通过母系社会环境继承回避行为使社交网络变得不那么密集且更加模块化，从而证明了社交回避如何塑造动物社交网络的进化。