Social dynamics drive selection in cooperative associations of ant queens
Social dynamics drive selection in cooperative associations of ant queens
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DOI：
10.1093/beheco/art093
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发表时间：
2014-01-01
影响因子：
2.4
通讯作者：
Fewell, Jennifer H.
中科院分区：
文献类型：
--
作者：
Clark, Rebecca M.;Fewell, Jennifer H.
社会动力学是结构化群体内部互动的新兴效应，在塑造社会表型和适应性方面发挥着关键作用。我们研究了社会动力学在简单群体中的潜在积极和消极影响，通过创建具有2种替代筑巢策略的收割蚁后社会群体，孤独与合作。我们比较了社会互动，生存，和巢生产力对皇后合作的创始人口，通常孤独的创始人口，或混合对的2种类型。表达的社会表型皇后对强烈依赖于其他皇后的血统。两种行为，攻击和育雏，表现出简单的社会动力学效应。侵略升级对通常孤独的皇后，而皇后合作对协调育雏输出，导致更有效的工人生产。这些动态有上下文为基础的健身后果，如合作皇后获得了生存优势，合作对，但没有类型的女王经历了优势或劣势的“混合”协会。在这些协会中，社会动态和适应性之间的相互作用为社会选择提供了一个经验性的例子。它捕捉到了一个可能的场景过渡到合作生活和早期进化，在合作的个人与孤独的个人谁缺乏合作或欺骗的先验策略进行交互。
Social dynamics, the emergent effects of interactions within structured groups, play a key role in shaping social phenotypes and fitness. We examined the potential positive and negative effects of social dynamics in simple groups, by creating social groups of harvester ant queens with 2 alternate nest-founding strategies, solitary versus cooperative. We compared social interactions, survival, and nest productivity of pairs containing queens from the cooperative founding population, the normally solitary founding population, or mixed pairs of the 2 types. Expressed social phenotypes of queens in pairs depended strongly on the lineage of the other queen. Two behaviors, aggression and brood care, showed simple social dynamical effects. Aggression escalated in pairs of normally solitary queens, whereas queens in cooperative pairs coordinated brood output, leading to more efficient worker production. These dynamics had context-based fitness consequences, such that cooperative queens gained a survival advantage in cooperative pairs, but neither type of queen experienced an advantage or disadvantage in "mixed" associations. The interplay between social dynamics and fitness in these associations provides an empirical example of social selection. It captures a likely scenario of the transition to and the early evolution of cooperative living, in which cooperative individuals interact with solitary individuals who lack a priori strategies for cooperation or cheating.