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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >ADAPTIVE PLASTICITY IN HATCHING AGE - A RESPONSE TO PREDATION RISK TRADE-OFFS
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ADAPTIVE PLASTICITY IN HATCHING AGE - A RESPONSE TO PREDATION RISK TRADE-OFFS

机译：适应年龄的适应性可塑性-对预期风险权衡的回应

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摘要

The life histories of many animals are characterized by niche shifts, the timing of which can strongly affect fitness. In the tree frog Agalychnis callidryas, which has arboreal eggs, there is a trade-off between predation risks before and after hatching. When eggs are attacked by snakes, tadpoles escape by hatching rapidly and falling into the water below. Eggs not attacked by snakes hatch later, when newly emerged tadpoles are less vulnerable to aquatic predators. Plasticity in hatching allows embryos to use immediate, local information on risk of mortality to make instantaneous behavioral decisions about hatching and the accompanying shift from arboreal to aquatic habitats. [References: 30]
机译：许多动物的生活史都以小生境变化为特征，其时机会严重影响体能。在有树卵的树蛙Agalychnis callidryas中，在孵化前后的捕食风险之间需要权衡。当卵被蛇攻击时，t会迅速孵化并掉入下面的水中而逃脱。后来，当新出现的t不易受到水族食肉动物攻击时，不会受到蛇攻击的卵会孵化。孵化过程中的可塑性使胚胎能够使用有关死亡风险的即时，本地信息来做出有关孵化以及随之而来的从树栖环境向水生生境转变的瞬时行为决策。 [参考：30]

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