Queuing and queue-jumping:: long-term patterns of reproductive skew in male savannah baboons, Papio cynocephalus
Queuing and queue-jumping:: long-term patterns of reproductive skew in male savannah baboons, Papio cynocephalus
复制标题
DOI：
10.1006/anbe.2003.2106
复制
发表时间：
2003-04-01
期刊：
影响因子：
2.5
通讯作者：
Altmann, J
中科院分区：
文献类型：
--
作者：
Alberts, SC;Watts, HE;Altmann, J
在许多动物中，雄性交配成功的差异与雄性优势等级或其他一些战斗能力的衡量标准密切相关。然而，对灵长类动物的研究在是否发现雄性主导地位和交配成功之间存在联系方面存在很大差异。这种变异性导致了关于雄性灵长类动物等级和交配成功之间关系的性质的辩论。我们通过对野生稀树大草原狒狒种群中32个群体年的优势等级和雄性交配成功之间的关系的分析，为解决这一争论做出了贡献。当将整个时期的数据汇集在一起时，级别较高的男性更容易接触到有生育能力的女性。然而，当我们检查连续6个月的区块时，我们发现在排名预测交配成功的程度上存在差异。在某些时期，优势等级的作用就像一个队列，雄性在其中等待交配机会，因此这个等级预示着交配成功。在其他时期，排队系统崩溃，当群体中有许多成年男性时，当群体中的男性年龄差异很大，当排名最高的男性只维持很短的一段时间时，排名无法预测交配成功。这一单一种群内的差异类似于观察到的狒狒种群之间和灵长类物种之间的差异。我们的长期结果有力地支持了这一命题，即这种差异不是短期研究之间方法差异的产物，而是由于高级别男性能够垄断接触女性的程度的真实差异。(C)2003年，由爱思唯尔科学有限公司代表研究或动物行为协会出版。
In many animals, variance in male mating success is strongly correlated with male dominance rank or some other measure of fighting ability. Studies in primates, however, have varied greatly in whether they detect a relationship between male dominance rank and mating success. This variability has led to debate about the nature of the relation between rank and mating success in male primates. We contribute to the resolution of this debate by presenting an analysis of the relationship between dominance rank and male mating success over 32 group-years in a population of wild savannah baboons. When data were pooled over the entire period, higher-ranking males had greater access to fertile females. However, when we examined successive 6-month blocks, we found variance in the extent to which rank predicted mating success. In some periods, the dominance hierarchy functioned as a queue in which males waited for mating opportunities, so that rank predicted mating success. In other periods, the queuing system broke down, and rank failed to predict mating success when many adult males were in the group, when males in the group differed greatly in age, and when the highest-ranking male maintained his rank for only short periods. The variance within this single population is similar to the variance observed between populations of baboons and between species of primates. Our long-term results provide strong support for the proposition that this variance is not an artefact of methodological differences between short-term studies, but is due to true variance in the extent to which high-ranking males are able to monopolize access to females. (C) 2003 Published by Elsevier Science Ltd on behalf of The Association for the Study or Animal Behaviour.