Save

Diet evolution in litter frogs: reassessing the Toft’s hypotheses

In: Amphibia-Reptilia
View More View Less
  • 1 Departamento de Zoologia, Universidade Federal do Paraná, , CEP 81531-980, Curitiba, Paraná, , Brazil
  • | 2 Programa de Pós-Graduação em Zoologia, Universidade Federal do Paraná, , CEP 81531-980, Curitiba, Paraná, , Brazil
Download Citation Get Permissions

Access options

Get access to the full article by using one of the access options below.

Institutional Login

Log in with Open Athens, Shibboleth, or your institutional credentials

Login via Institution

Purchase

Buy instant access (PDF download and unlimited online access):

€29.95$34.95

Abstract

In a series of papers starting in the early 1980s, Toft proposed a general scenario to explain dietary evolution in leaf litter anurans in which species would “form a continuum from those that specialize on ants and mites, through generalists, to species that avoid ants and mites”, and these differences would in turn correlate with foraging strategies, morphology, and defense mechanisms. In this study, we reassess this hypothesis using a global dataset on the dietary composition of 120 anuran species. Surprisingly, we found that the relative contribution of ants and mites in anuran diets were largely orthogonal to one another. Moreover, we did not find evidence for the continuum of dietary composition envisioned by Toft. These results suggest that, although ants and mites have played a major role in the evolution of aposematic species, the trends found in those species might not be directly extrapolated to all leaf litter anurans.

Content Metrics

All Time Past Year Past 30 Days
Abstract Views 501 113 13
Full Text Views 23 2 0
PDF Views & Downloads 26 4 0