Moorhens have an internal representation of their own eggs
Moorhens have an internal representation of their own eggs
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DOI：
10.1007/s00114-008-0486-5
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发表时间：
2009-03
影响因子：
--
通讯作者：
M. Petrie;R. Pinxten;M. Eens
中科院分区：
文献类型：
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作者：
M. Petrie;R. Pinxten;M. Eens
鸟类如何识别自己的蛋？它们是否有一个储存的蛋特征模板，或者它们使用另一种机制？种内育雏寄生被认为是一种额外的繁殖策略，女性可以增加自己的繁殖成功。由于养育不是自己的幼仔所涉及的成本，雌性将支付检测和拒绝寄生虫卵的费用，尽管不知道它们如何做到这一点。在这里，我们通过实验表明，黑水鸡将停止在巢中产卵时，他们的第一个鸡蛋被替换为另一只母鸡的鸡蛋，但不是当它被替换为自己的鸡蛋从早期离合器。这提供了很好的证据，证明鸟类对自己的蛋有内部表征，并在决定是否拒绝外国蛋时使用这一点。
How do birds recognize their own eggs? Do they have a stored template for their own egg characteristics, or do they use another mechanism? Intraspecific brood parasitism is considered to be an additional reproductive tactic where females can increase their own reproductive success. Because of the costs involved in rearing young that are not their own, it will pay females to detect and reject the eggs of a parasite, although it is not known how they do this. Here, we show experimentally that moorhens will cease laying in a nest when their first egg is replaced with another hen’s egg but not when it is replaced with their own egg taken from an earlier clutch. This provides good evidence that birds have an internal representation of their own eggs and use this in decisions about whether to reject foreign eggs.