Context dependence of female reproductive competition in wild chacma baboons
Context dependence of female reproductive competition in wild chacma baboons
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DOI：
10.1016/j.anbehav.2018.03.001
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发表时间：
2018-05-01
期刊：
影响因子：
2.5
通讯作者：
Huchard, Elise
中科院分区：
文献类型：
--
作者：
Baniel, Alice;Cowlishaw, Guy;Huchard, Elise
最近的研究表明，雌性生殖竞争是常见的，并可能塑造雌性哺乳动物的社会和生殖策略。本研究探讨了野生性乱灵长类动物--南非狒狒（Papio ursinus）雌性性内冲突的决定因素和强度。我们测试了一套假设，以评估女性对女性的攻击是否主要是由食物，配偶或父亲照顾的即时竞争驱动，或旨在通过生殖抑制减少后代之间的未来竞争。在两个对比鲜明的2年期间（2005-2006年，2013-2014年），从两组53名女性中收集了行为数据：第一组的特征是男性统治阶层的稳定性，第二组是由几次移民事件和男性接管引起的不稳定性。在这两个时期，我们发现，性接受女性收到高水平的侵略从其他性接受女性，与竞争交配机会。在不稳定的时期，女性交流的侵略率高于稳定期，无论生殖状态，但哺乳期女性收到最侵略，符合较高的竞争，在社会上获得男性合作伙伴，以应对增加的杀婴风险。没有证据表明，女性之间的侵略反映了对食物的竞争或生殖抑制。这些研究结果表明，女性之间的侵略模式波动与社会人口因素影响性和社会访问男性，并反映生殖竞争更密切的资源竞争，在这个滥交的灵长类动物社会。(C)2018动物行为研究协会。由爱思唯尔有限公司出版。保留所有权利。
Recent research reveals that female reproductive competition is common and may shape the social and reproductive strategies of female mammals. This study explores the determinants and intensity of female intrasexual conflicts in a wild promiscuous primate, the chacma baboon, Papio ursinus. We tested a suite of hypotheses to assess whether female-female aggression was primarily driven by instantaneous competition for food, mates or paternal care, or aimed at reducing future competition among offspring via reproductive suppression. Behavioural data were gathered from 53 females in two groups over two contrasting 2-year periods (2005-2006, 2013-2014): the first characterized by stability in the male dominance hierarchies, the second by instability induced by several immigration events and male takeovers. In both periods, we found that sexually receptive females received high levels of aggression from other sexually receptive females, consistent with competition over mating opportunities. In the unstable period, females exchanged higher rates of aggression than in the stable period, regardless of reproductive state, but lactating females received most aggression, consistent with higher competition over social access to male partners in response to increased infanticide risk. There was no evidence that aggression between females reflected either competition over food or reproductive suppression. These findings indicate that patterns of aggression between females fluctuate with sociodemographic factors affecting sexual and social access to males and reflect reproductive competition more closely than resource competition in this promiscuous primate society. (C) 2018 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.