Individual contributions to babysitting in a cooperative mongoose, Suricata suricatta
Individual contributions to babysitting in a cooperative mongoose, Suricata suricatta
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DOI：
10.1098/rspb.2000.1000
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发表时间：
2000-02-07
影响因子：
4.7
通讯作者：
McIlrath, GM
中科院分区：
文献类型：
--
作者：
Clutton-Brock, TH;Brotherton, PNM;McIlrath, GM
基于亲缘选择的合作繁殖的进化解释预测，不同帮助者对抚养后代的个人贡献应该与他们与他们所抚养的窝或窝的亲缘程度有关。在合作猫鼬或猫鼬Suricata suricatta中，帮手在幼崽出生的第一个月照顾幼崽，经常照顾幼崽的人在照顾幼崽的过程中体重会大幅下降。帮助者之间的贡献差异很大，这与他们的年龄、性别和体重有关，但与他们抚养的孩子的亲属关系无关。向某些群体成员提供食物会提高个体对照看孩子的贡献。我们讨论了这些结果对合作行为的进化解释的影响。
Evolutionary explanations of cooperative breeding based on kin selection have predicted that the individual contributions made by different helpers to rearing young should be correlated with their degree of kinship to the litter or brood they are raising. In the cooperative mongoose or meerkat, Suricata suricatta, helpers babysit pups at the natal burrow for the first month of pup life and frequent babysitters suffer substantial weight losses over the period of babysitting. Large differences in contributions exist between helpers, which are correlated with their age, sex and weight but not with their kinship to the young they are raising. Provision of food to some group members raises the contributions of individuals to babysitting. We discuss the implications of these results for evolutionary explanations of cooperative behaviour.