Female initiated divorce in a monogamous songbird: Abandoning mates for males of higher quality
Female initiated divorce in a monogamous songbird: Abandoning mates for males of higher quality
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DOI：
10.1098/rspb.1996.0054
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发表时间：
1996-03-22
影响因子：
4.7
通讯作者：
Ratcliffe, L
中科院分区：
文献类型：
--
作者：
Otter, K;Ratcliffe, L
与当前伴侣离婚，与更高质量的伴侣重新配对，可能是一种策略，以提高繁殖成功率，用于社会一夫一妻制的鸟类。通过在筑巢期间通过选择性地去除配偶来增加雄性的可用性，我们发现雌性黑顶山雀，Parus atricapillus，会抛弃他们的配偶与社会地位较高的雄性配对，这一特征与该物种的资源保持潜力密切相关。来自邻近地区的女性更有可能抛弃他们的伴侣，而不是排名低的鳏夫男性;六个七个高排名和一个六个低排名的男性被选择的离婚女性。七个鳏夫男性选择离婚的女性占主导地位的男性，女性遗弃。一旦被释放，最初被移除的雌性能够与它们的配偶重新建立配对关系。较高的社会地位的女性可能使他们能够排除低排名的替代女性，并可能反映了女性选择的自然约束。
Divorcing a current partner to re-pair with a mate of higher quality may be a strategy to increase reproductive success used by socially monogamous birds. By increasing the availability of males through selective mate removal during the nest building period, we found that female black-capped chickadees, Parus atricapillus, will desert their mates to pair with males of higher social rank, a trait closely associated with resource holding potential in this species. Females from neighbouring territories were more likely to desert their mates for high ranked rather than the low ranked widower males; six of seven high ranking and one of six low ranking males were chosen by the divorcing females. Six of the seven widower males chosen by divorcing females were dominant to the males that the females deserted. Once released, the originally removed females were able to re-establish pairbonds with their mates. Higher social ranks of removed females may have enabled them to exclude lower ranked replacement females, and may reflect a natural constraint on female choice.