Between-group hostility affects within-group interactions in tufted capuchin monkeys
Between-group hostility affects within-group interactions in tufted capuchin monkeys
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DOI：
10.1016/j.anbehav.2011.11.016
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发表时间：
2012-02-01
期刊：
影响因子：
2.5
通讯作者：
Aureli, Filippo
中科院分区：
文献类型：
--
作者：
di Sorrentino, Eugenia Polizzi;Schino, Gabriele;Aureli, Filippo
长期以来，群体之间的竞争一直被认为是影响群体内部社会动态的关键因素。在人类中，有人认为群体之间的竞争可能有利于群体内部合作的出现。然而，群体之间的竞争也可能导致社会紧张，导致群体内社会关系恶化。到目前为止，很少有研究关注这些对动物社会的可能影响。在这项研究中，我们使用实验装置来操纵两个相邻的圈养卷尾猴（Cebus apella）群体之间的视觉攻击互动机会，以研究群体成员在隶属关系和攻击方面的行为调整。“合作假说”预测，与相邻群体的视觉接触会积极加强社会关系，以缓冲群体间的敌意。相比之下，“诱导紧张假说”预测社会关系会受到相邻群体的视觉暴露的负面影响，因为群体之间的敌意会引起更高水平的社会紧张。实验操作并未对群体内的依恋行为产生影响，而当群体间存在视觉攻击互动时，群体内的攻击行为更高，优势等级更陡。总体而言，与邻近群体的互动导致社会关系恶化，并在一定程度上证实了诱发紧张假说。(C) 2011动物行为研究协会。Elsevier Ltd.出版。版权所有。
Between-group competition has long been thought to be a key factor influencing within-group social dynamics. In humans, it has been suggested that between-group competition may favour the emergence of within-group cooperation. However, between-group competition can also be hypothesized to induce social tension and cause within-group social relationships to deteriorate. So far, little research has focused on these possible effects in animal societies. In this study, we used an experimental set-up to manipulate the opportunity for visual aggressive interactions between two adjacent groups of captive tufted capuchin monkeys, Cebus apella, to examine the group members' behavioural adjustment in terms of affiliation and aggression. The 'cooperative hypothesis' predicted social relationships to be positively reinforced by the visual exposure to the adjacent group to buffer between-group hostility. By contrast, the ` induced-tension hypothesis' predicted social relationships to be negatively affected by the visual exposure to the adjacent group because of the higher level of social tension induced by between-group hostility. The experimental manipulation did not produce changes in affiliative behaviours, whereas within-group aggression was higher and the dominance hierarchy steeper when visual aggressive interactions between groups were allowed. Overall, interactions with a neighbouring group caused social relationships to deteriorate and partly confirmed the induced-tension hypothesis. (C) 2011 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.