Abstract

In the present study, we describe and compare the diet of two populations of Pleurodema diplolister from northeastern Brazil. We assessed whether diet composition varies between the different populations and whether the size of individuals is related to the composition, volume and the size of prey consumed. Stomach contents were retrieved through the stomach-flushing technique from specimens collected in two municipalities (Morro do Chapéu and Rio de Contas) in the semi-arid region of Bahia State. We captured a total of 163 individuals and 91 of them had some type of stomach contents. A total of 278 food items were classified and distributed among 10 prey categories. The main food items consumed include Hymenoptera (Formicidae), Isoptera and Coleoptera. The morphometric measurements (snout-vent length and mouth width) of P. diplolister were significantly correlated with the diet (total volume of prey and length of the largest prey ingested). Diet composition differed between the two localities, showing little overlap between populations. Part of the variation in diet composition may be attributed to differences in the size of P. diplolister individuals. However, many factors can be associated to these differences, such as prey availability, landscape structure or even anthropic influences on the local ecosystem. In order to unravel the intricacies behind these distinct patterns, a comprehensive examination of these factors and others becomes imperative. This detailed analysis is crucial for a more thorough understanding of the extent to which these elements influence the feeding habits of anurans.

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