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Tree frogs speed up their life cycle when becoming lunch
Date:9/3/2014

tching time is clearly a reaction to the eggs' being preyed upon. It is possibly triggered by chemical cues that are released once embryos are broken, or when the clutch structure as a whole is damaged. The researchers also established that early hatching in this case was not correlated with the size of the female frog that laid the eggs or the amount of time she spends watching over them.

"Both young and old Hansen's tree frog embryos are able to hatch earlier when disturbed," says Poo.

"Hatching is a plastic or flexible event in the life cycle of this frog, because its embryos are able to respond to acute signals, such as predation, by escaping into the next life-stage," explains Bickford, who suggests that this ability gives the frog an adaptive advantage.


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Contact: Alexander K. Brown
alexander.brown@springer.com
212-620-8063
Springer Science+Business Media
Source:Eurekalert  

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