Naturally occurring fluorescence in frogs
In this interdisciplinary study, we report naturally occurring fluorescence in amphibians; specifically, in a common South American tree frog. We show that fluorescence is traceable to a class of compound that occurs in lymph and skin glands. Our study indicates that in our model species, in low-light conditions, fluorescence accounts for an important fraction of the total emerging light, largely enhancing brightness of the individuals and matching the sensitivity of night vision in amphibians. These findings open an exciting perspective into frog visual physiology and ecology and into the role of fluorescence in terrestrial environments, where classically it has been considered irrelevant.
Taboada, C; Brunetti, AE; Pedron, FN; Carnevale Neto, F; Estrin, DA; Bari, SE; Chemes, LB; Peporine Lopes, N; Lagorio, MG; Faivovich, J
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