What derived behavior do Titicaca water frogs exhibit when oxygen levels drop acutely?

Answer

Performing "push-ups" or bobs to increase water flow over skin folds

When oxygen levels acutely drop, the frog performs 'push-ups' or bobs to maximize the diffusion of scarce oxygen across its specialized skin.

What derived behavior do Titicaca water frogs exhibit when oxygen levels drop acutely?
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