A NEW FORM OF REPRODUCTIVE PARASITISM IN CLIFF SWALLOWS
A NEW FORM OF REPRODUCTIVE PARASITISM IN CLIFF SWALLOWS
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DOI：
10.1038/331066a0
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发表时间：
1988-01-07
期刊：
影响因子：
64.8
通讯作者：
BROWN, MB
中科院分区：
文献类型：
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作者：
BROWN, CR;BROWN, MB
在一些产卵动物，尤其是鸟类中，一种常见的繁殖策略是在另一个个体的巢中产卵，从而寄生于同一物种或不同物种的其他个体的繁殖成果。现在已知种内寄生在某些物种中有规律地发生，而在许多其他物种中偶有发生。种内寄生可能是个体增强繁殖能力或在不可能或成本过高的情况下成功繁殖的一种策略。我们发现，殖民地崖燕（Hirundo pyrrhonota）不仅在其他个体的巢穴中产卵，而且在产卵后还会在巢穴之间进行身体转移。卵子转移可以发生在蛋下后和孵化前的任何时间，这可能代表了一种策略，即个体将其卵子分布在几个巢穴中，以确保在筑巢失败的情况下仍有一些后代存活下来。在鸟巢之间偷偷摸摸地转移卵子代表了鸟类中一种以前未知的生殖寄生形式。
A common reproductive strategy among some egg-laying animals, especially birds, is to lay an egg in another individual's nest and thereby parasitize the reproductive effort of others of either the same species or a different species. Intraspecific parasitism is now known to occur regularly in some species1–4and sporadically in many others5,6, and may represent a strategy by which individuals augment their reproductive performance2or succeed in reproducing when it would otherwise be impossible or too costly5. We have discovered that colonial cliff swallows (Hirundo pyrrhonota) not only lay eggs in other individuals' nests, but also physically transfer eggs between nests after the eggs are laid. Egg transfers can occur at any time after an egg is laid and before it hatches, and may represent a strategy by which an individual distributes its eggs in several nests to ensure some surviving offspring in the event of nesting failures. Sneaky transfer of eggs between nests represents a previously unknown form of reproductive parasitism in birds.