Associations are more strongly correlated with space use than kinship in female eastern grey kangaroos
Associations are more strongly correlated with space use than kinship in female eastern grey kangaroos
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DOI：
10.1016/j.anbehav.2013.12.011
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发表时间：
2014-03-01
期刊：
影响因子：
2.5
通讯作者：
Goldizen, Anne W.
中科院分区：
文献类型：
--
作者：
Best, Emily C.;Dwyer, Ross G.;Goldizen, Anne W.
在哺乳动物社会中，亲缘关系和雌性社会偏好之间的关系常常因亲缘行为和两两家庭范围重叠的变化而变得复杂。虽然在使用网络分析的研究中越来越多地考虑到空间使用对关联模式的影响，但仍需要一些方法来生成控制成对本源范围重叠的零模型。本研究调查了具有较高裂变融合动态的东部灰袋鼠（Macropus giganteus）野生种群的雌性结合力，以检验家域重叠和亲缘关系对配对结合力的影响。遗传分析表明，雌性具有高度的亲缘性，我们发现关联强度与家庭范围重叠显著相关。为了测试社会偏好，我们将观察到的关联与基于个人空间使用的随机关联进行了比较，并使用Digiroo2进行了模拟。HWIG是半权重关联指数的一个版本，用于控制个体间的群居性变化。偏好同伴的两两相关性显著高于预期。虽然一些雌性与一些近亲有很强的社会关系，但总的来说，空间使用与联系强度的相关性要比成对亲缘关系和母系关系强得多。这表明熟悉度可能在雌性袋鼠的联想模式中起着关键作用。我们建议在研究一般的社会偏好和社会结构时控制个人的空间使用。(C) 2013动物行为研究协会。Elsevier Ltd.出版。版权所有。
Understanding the relationship between kinship and female social preferences in mammalian societies is frequently complicated by philopatric behaviour and variation in pairwise home range overlap. While the influence of space use on association patterns is increasingly being considered in studies using network analysis, methods are needed for generating null models that control for pairwise home range overlap. We investigated female associations in a wild population of eastern grey kangaroos, Macropus giganteus, a species with higher fission-fusion dynamics, to test the influences of home range overlap and kinship on pairwise association strengths. Genetic analysis revealed that females were highly philopatric and we found that association strengths were significantly correlated with home range overlap. To test for social preferences, we compared observed associations with random associations based on individuals' space use, simulated using Digiroo2. HWIG, a version of the half-weight association index that controls for among-individual variation in gregariousness was used for all analyses. Preferred associates had significantly higher pairwise relatedness than expected. Although some females had strong social relationships with some of their close kin, in general, space use had a much stronger correlation with association strengths than both pairwise relatedness and maternal lineage. This suggests that familiarity may play a key role in driving association patterns in female kangaroos. We recommend controlling for individuals' space use when undertaking studies on social preferences and social structure in general. (C) 2013 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.