Adaptive plasticity in hatching age: a response to predation risk trade-offs.

摘要: Abstract The life histories of many animals are characterized by niche shifts, the timing which can strongly affect fitness. In tree frog Agalychnis callidryas, has arboreal eggs, there is a trade-off between predation risks before and after hatching. When eggs attacked snakes, tadpoles escape hatching rapidly falling into water below. Eggs not snakes hatch later, when newly emerged less vulnerable to aquatic predators. Plasticity in allows embryos use immediate, local information on risk mortality make instantaneous behavioral decisions about accompanying shift from habitats.