REPRODUCTIVE COMPETITION IN THE COMMUNAL ACORN WOODPECKER - SISTERS DESTROY EACH OTHERS EGGS
REPRODUCTIVE COMPETITION IN THE COMMUNAL ACORN WOODPECKER - SISTERS DESTROY EACH OTHERS EGGS
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DOI：
10.1038/306583a0
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发表时间：
1983-01-01
期刊：
影响因子：
64.8
通讯作者：
PITELKA, FA
中科院分区：
文献类型：
--
作者：
MUMME, RL;KOENIG, WD;PITELKA, FA
在群居脊椎动物中，高度合作或明显的利他行为通常发生在近亲之间1,2。相比之下，高度竞争或自私的行为，例如杀害同种幼崽，往往是针对不相关的个体3,4。这些发现与包容性适应理论的预测一致5，并得出这样的建议：亲属应该受到优惠待遇，不仅要合作，还要减少攻击性或竞争2,6-9。然而，如果直接（个人）适应度的增加10超过间接适应度的损失5,11-14，自私、竞争和操纵行为可能会在近亲之间演变。我们在这里报告了橡子啄木鸟近亲之间生殖干扰的一个极端例子，其中共同筑巢的雌性兄弟姐妹在产下自己的卵之前会破坏其姐妹的卵。
Among group-living vertebrates, highly cooperative or apparently altruistic behaviours usually occur between close relatives1,2. In contrast, highly competitive or selfish behaviours, such as the killing of conspecific young, are often directed towards unrelated individuals3,4. These findings are consistent with predictions of inclusive fitness theory5, and have led to the suggestion that kin should receive favoured treatment in the form of not only cooperation but also reduced aggression or competition2,6–9. However, selfish, competitive and manipulative behaviours can evolve among close relatives if the gain in direct (individual) fitness10exceeds the loss in indirect fitness5,11–14. We report here an extreme example of reproductive interference between close relatives in the acorn woodpecker, in which communally nesting sibling females in this species destroy their sister's eggs prior to laying their own.