Why do cuckolded males provide paternal care?
Why do cuckolded males provide paternal care?
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DOI：
10.1371/journal.pbio.1001520
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发表时间：
2013
期刊：
影响因子：
9.8
通讯作者：
Cornwallis CK
中科院分区：
文献类型：
--
作者：
Griffin AS;Alonzo SH;Cornwallis CK
对昆虫、鸟类、鱼类和哺乳动物的比较分析揭示了为什么雄性有时会为照顾其他雄性的后代付出代价。在大多数物种中，当其他雄性戴绿帽子时，雄性不会抛弃后代或减少父亲的照顾。这种明显缺乏调整父亲的投资与父权的可能性提出了一个潜在的挑战，我们的理解是什么驱动选择父亲的照顾。在对鸟类、鱼类、哺乳动物和昆虫的比较分析中，我们确定了解释为什么许多物种中戴绿帽子的雄性不会减少父爱的关键因素。具体来说，我们表明，戴绿帽子的男性只减少父亲的投资，如果照顾成本相对较高，有一个高风险的戴绿帽子。在这种情况下，选择预计会有利于男性，减少父亲的努力，以回应绿帽子。然而，在许多物种中，这些条件并不满足，宽容的雄性已经超过了放弃年轻人的雄性。在研究过的大多数物种中，当雄性被其他雄性戴绿帽子时，它们不会放弃或减少父亲的照顾。这些观察结果对我们理解是什么驱动了对父亲照顾的选择提出了长期挑战。然而，我们对50种鸟类、鱼类、哺乳动物和昆虫的戴绿帽子父亲的分析表明，有时候雄性留下来是值得的。就人类和埋葬甲虫而言，这是因为雌性相对来说是一夫一妻制的--通过抛弃，父亲很可能会抛弃自己的幼崽。在像查克玛狒狒这样的物种中，雄性狒狒面临着戴绿帽子的巨大风险，并且由于在其他雄性狒狒的幼崽身上浪费宝贵的资源，在未来的繁殖成功方面面临着潜在的高额惩罚。与人类不同的是，这些物种中滥交的雌性几乎肯定会失去配偶的支持，无法将幼崽抚养成人。
A comparative analysis across insects, birds, fish, and mammals reveals why it sometimes pays for males to care for the offspring of other males. In most species, males do not abandon offspring or reduce paternal care when they are cuckolded by other males. This apparent lack of adjustment of paternal investment with the likelihood of paternity presents a potential challenge to our understanding of what drives selection for paternal care. In a comparative analysis across birds, fish, mammals, and insects we identify key factors that explain why cuckolded males in many species do not reduce paternal care. Specifically, we show that cuckolded males only reduce paternal investment if both the costs of caring are relatively high and there is a high risk of cuckoldry. Under these circumstances, selection is expected to favour males that reduce paternal effort in response to cuckoldry. In many species, however, these conditions are not satisfied and tolerant males have outcompeted males that abandon young. In most species where it has been studied, males do not abandon or reduce paternal care when they are cuckolded by other males. These observations have presented a long-standing challenge to our understanding of what drives selection for paternal care. Our analysis of cuckolded fathers from 50 species of birds, fish, mammals, and insects, however, shows that sometimes it pays for males to stick around. In the case of humans and burying beetles, this is because females are relatively monogamous—by deserting, it is most likely the case that fathers will be deserting their own young. In species such as the chacma baboon, males face a significant risk of cuckoldry, and face potentially high penalties in terms of future breeding success by wasting precious resources on the young of other males. Unlike in humans, promiscuous females in these species will almost certainly lose the support of her mate in the effort to raise her young to adulthood.
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影响因子：
10
作者：
Kilner, Rebecca M.;Langmore, Naomi E.
通讯作者：
Langmore, Naomi E.
DOI：
10.1098/rspb.2002.2013
发表时间：
2002-06-22
影响因子：
4.7
作者：
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通讯作者：
Owens, IPF
影响因子：
2
作者：
HAMILTON, WD
通讯作者：
HAMILTON, WD
影响因子：
2.3
作者：
Eliassen, Sigrunn;Kokko, Hanna
通讯作者：
Kokko, Hanna
影响因子：
56.9
作者：
Griffin, AS;West, SA
通讯作者：
West, SA