Social attributes and associated performance measures in marmots: bigger male bullies and weakly affiliating females have higher annual reproductive success
Social attributes and associated performance measures in marmots: bigger male bullies and weakly affiliating females have higher annual reproductive success
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DOI：
10.1007/s00265-012-1358-8
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发表时间：
2012-04
影响因子：
2.3
通讯作者：
Tina W. Wey;D. Blumstein
中科院分区：
文献类型：
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作者：
Tina W. Wey;D. Blumstein
研究社会互动的结构是行为生态学的基础，因为社会行为通常会影响适应性，从而影响自然选择。然而，社会结构往往是复杂的，并且确定个体之间社会行为变化的最适当的度量可能是困难的。社会网络分析产生了许多，但往往是相关的，来自网络的互动个人连通性的措施。我们使用的措施，个人连接在网络中的亲和和竞争的相互作用，黄腹旱獭，首先确定如何方差网络措施之间的结构。主成分分析减少了我们的网络措施的四个“社会属性”（未加权连接，从属关系强度，受害，欺凌），这揭示了从属和竞争的互动模式之间的差异。然后，我们使用这些提取的社会属性来研究个人的社会属性和几个性能指标之间的关系：年度繁殖成功，寄生虫感染，和基础压力。在雄性土拨鼠中，欺凌与年度繁殖成功呈正相关，而在雌性土拨鼠中，从属强度与年度繁殖成功呈负相关。没有其他社会属性与任何绩效指标显著相关。我们的研究强调了在测量社会行为的结构和功能后果时考虑多个维度的实用性。
Studying the structure of social interactions is fundamental in behavioral ecology as social behavior often influences fitness and thus natural selection. However, social structure is often complex, and determining the most appropriate measures of variation in social behavior among individuals can be difficult. Social network analysis generates numerous, but often correlated, measures of individual connectedness derived from a network of interactions. We used measures of individual connectedness in networks of affiliative and agonistic interactions in yellow-bellied marmots,Marmota flaviventris, to first determine how variance was structured among network measures. Principal component analysis reduced our set of network measures to four “social attributes” (unweighted connectedness, affiliation strength, victimization, and bullying), which revealed differences between patterns of affiliative and agonistic interactions. We then used these extracted social attributes to examine the relationship between an individual’s social attributes and several performance measures: annual reproductive success, parasite infection, and basal stress. In male marmots, bullying was positively associated with annual reproductive success, while in females, affiliation strength was negatively associated with annual reproductive success. No other social attributes were significantly associated with any performance measures. Our study highlights the utility of considering multiple dimensions when measuring the structure and functional consequences of social behavior.