Allometric escape from acoustic constraints in frog calls is rare

Joao Filipe Tonini, Diogo Provete, Natan Maciel, Alessandro Morais, Sandra Goutte, Felipe Toledo & R. Alexander Pyron
Allometric constraint is a product of natural selection, particularly with respect to body size and traits constrained by physical properties thereof, such as metabolism, longevity, and vocal frequency. Parameters describing allometric relationships are conserved across most lineages, indicating that physical constraints dictate scaling patterns in deep time, despite substantial genetic and ecological divergence among organisms. Acoustic allometry (sound frequency ~ body size) is conserved across frogs, in defiance of massive variation in both body size...
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