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A Model of Social Organization and the Evolution of Food Sharing in Vampire Bats

机译：吸血蝙蝠的社会组织模型与食物共享的演变

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摘要

This article is aimed at exploring the role of groups in the evolution of a well-known form of altruism: blood sharing among vampire bats. In particular, we are interested in the formation and maintenance of new social structures (roosts) from initial populations as a consequence of both demographic growth and social organization. The example of vampire bats is especially interesting because of the flexible roost-switching behavior shown by these animals in nature. The main hypothesis made in this article concerns the role of grooming networks in roost formation, and was investigated by means of simulation grounded on ethological evidence. The use of simulation allows the discussion of generative hypotheses on the origin of roosts, which are emergent from individual behavior. Besides confirming the main expectations, the results point to the need for a natural ordering in grooming partner selection. This ordering can be obtained not only through kin-based groups but also through the maintenance of a non kin-based precedence rule.
机译：本文旨在探讨群体在一种著名的利他主义形式的演变中的作用：吸血蝙蝠之间的血液共享。特别是，我们对由于人口增长和社会组织而从初始人口形成和维持新的社会结构（栖息地）感兴趣。吸血蝙蝠的例子特别有趣，因为这些动物在自然界中表现出灵活的栖息地转换行为。本文提出的主要假设涉及修饰网络在栖息地形成中的作用，并通过基于种族学证据的模拟进行了研究。模拟的使用允许讨论关于栖息地起源的生成假设，这些假设源自个人行为。除了确认主要期望外，结果还表明在梳理合作伙伴选择时需要自然排序。这种排序不仅可以通过基于亲属的组获得，而且可以通过维护基于非亲属的优先规则来获得。

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