Patterns of interventions and the effect of coalitions and sociality on male fitness.
Patterns of interventions and the effect of coalitions and sociality on male fitness.
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DOI：
10.1111/j.1365-294x.2011.05250.x
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发表时间：
2012-02
影响因子：
4.9
通讯作者：
Widdig A
中科院分区：
文献类型：
--
作者：
Kulik L;Muniz L;Mundry R;Widdig A
在群居动物中，特别是灵长类动物中，有一致的证据表明，地位高的雄性比地位低的雄性获得更高的生殖输出。灵长类动物的研究表明，男性联盟和社会性可以影响男性的健康;然而，目前还不清楚男性是否可以通过优先支持和与女性交往来增加他们的健康。在这里，我们调查模式的男性干预和联盟和社会性对男性健身的恒河猴（猕猴），特别注重男女互动的影响。我们将在圣地亚哥岛收集的行为数据与男性生殖输出和相关性分析的遗传数据相结合。我们的研究结果显示，排名前十的男性提供了大多数的男性支持观察。与其他灵长类动物相比，雄性恒河猴主要形成全向下联盟，这表明联盟不太可能用于增强雄性优势。男性支持女性期间和之前，他们可能的概念是不是更有可能使这些女性受精。我们也没有发现任何证据表明雄性更愿意支持他们的后代或其他近亲。有趣的是，男性支持的最重要的预测因素是社交性，因为与给定男性共享较高社交指数的对手更有可能得到支持。此外，一个给定的男性-女性二元体的高社会性指数导致较高的概率的父亲。总的来说，我们的研究结果加强了社会性影响雄性灵长类动物健身的证据，但也表明，在雄性排队占主导地位的物种中，雄性从联盟中获得健身益处的可能性较小。
In group living animals, especially among primates, there is consistent evidence that high-ranking males gain a higher reproductive output than low-ranking males. Primate studies have shown that male coalitions and sociality can impact male fitness; however, it remains unclear whether males could potentially increase their fitness by preferentially supporting and socializing with females. Here we investigate patterns of male interventions and the effect of coalitions and sociality on male fitness in rhesus macaques (Macaca mulatta) with particular focus on male-female interactions. We combined behavioral collected on Cayo Santiago with genetic data analyzed for male reproductive output and relatedness. Our results revealed that the ten top-ranking males provided the majority of all male support observed. In contrast to other primates, male rhesus macaques mainly formed all-down coalitions suggesting that coalitions are less likely used to enhance male dominance. Males supporting females during and before their likely conception were not more likely to fertilize those females. We also found no evidence that males preferably support their offspring or other close kin. Interestingly, the most important predictor of male support was sociality, since opponents sharing a higher sociality index with a given male were more likely to be supported. Furthermore, a high sociality index of a given male-female dyad resulted in a higher probability of paternity. Overall, our results strengthen the evidence that sociality affects fitness in male primates, but also suggest that in species in which males queue for dominance, it is less likely that males derive fitness benefits from coalitions.