Diet of the toad Rhinella icterica (Anura: Bufonidae) from Atlantic Forest Highlands of southeastern Brazil
Leandro Talione Sabagh,Leandro Talione Sabagh,Ana Maria Paulino Telles de Carvalho-e-Silva,Carlos Frederico Duarte Rocha +3 more
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TLDR
It is concluded that R. icterica toads at the highlands of Itatiaia feeds on arthropods, mainly ants and coleopterans and that the high consumption of preys with relatively small and similar size as ants in the diet prevents an expected relationship among frog body or mouth size and prey volume and size.Abstract:
In this study, we present some information of the regarding throphic niche from the anuran toad Rhinella icterica living in high altitudes above 2000 m a.s.l. from a habitat of the Atlantic Forest Biome - the Altitude Fields in the Itatiaia National Park. We found 150 prey items in toad stomachs, belonging to five prey types, as well as skin remains and some remains of plant material. The index of relative importance indicated that most important prey types were beetles and ants, these last composing 70% of the diet numerically and the trophic niche breadth (B) was 1.81. The relatively low diversity of prey types we recorded in the diet of R. icterica of Itatiaia and numerically dominated by ants suggests some preference for this item. We do not found significant relationship between the toad measurements with the preys' measurements. We concluded that R. icterica toads at the highlands of Itatiaia feeds on arthropods, mainly ants and coleopterans and that the high consumption of preys with relatively small and similar size as ants in the diet prevents an expected relationship among frog body or mouth size and prey volume and size.read more
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Diet composition and trophic niche overlap between two sympatric species of Physalaemus (Anura, Leptodactylidae, Leiuperinae) in a subtemperate forest of southern Brazil
Camila Fernanda Moser,Fernanda Rodrigues de Avila,Mateus de Oliveira,Alexandro Marques Tozetti +3 more
TL;DR: The results indicate similarities in the diet composition and foraging behavior of P. lisei and P. gracilis, which have similar trophic niche breadth and a high diet overlap.
Journal ArticleDOI
Ecology of the bromeligenous frog Phyllodytes luteolus (Anura, Hylidae) from three restinga remnants across Brazil's coast
Tatiana Motta-Tavares,Thiago Maia-Carneiro,Leonardo F. Dantas,Monique Van Sluys,F. H. Hatano,Davor Vrcibradic,Carlos Frederico Duarte Rocha +6 more
TL;DR: Diet, sexual dimorphism and bromeliad use in three populations of the hylid frog Phyllodytes luteolus from restinga habitats along the Brazilian coast suggest this species has a conservative diet independent of area.
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Spatial and Trophic Structure of Anuran Assemblages in Environments with Different Seasonal Regimes in the Brazilian Northeast Region
Francis L. S. Caldas,Adrian Antonio Garda,Lucas Barbosa de Queiroga Cavalcanti,Edinaldo Leite-Filho,Renato Gomes Faria,Daniel Oliveira Mesquita +5 more
TL;DR: No assemblage was phylogenetically structured, and the existence of a possible “ecological filter” in Caatinga did not lead to increased “phylogenetic clustering’ in this environment, and strong evidence of niche conservatism in all assemblages was found.
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Toads prey upon scorpions and are resistant to their venom: A biological and ecological approach to scorpionism.
Carlos Jared,César Alexandre,Pedro Luiz Mailho-Fontana,Daniel C. Pimenta,Edmund D. Brodie,Marta M. Antoniazzi +5 more
TL;DR: The predatory behaviour of this toad against the yellow scorpion is studied and the resistance of the amphibian to scorpion venom is evaluated, showing that R. icterica is a voracious predator of T. serrulatus and is extremely resistant to its venom.
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Diet and trophic niche overlap of Boana bischoffi and Boana marginata (Anura: Hylidae) in southern Brazil
Camila Fernanda Moser,Mateus de Oliveira,Fernanda Rodrigues de Avila,Diogo Dutra-Araújo,Renata K. Farina,Alexandro Marques Tozetti +5 more
TL;DR: The diet composition of B. bischoffi and B. marginata in the southern domain of the Brazilian Atlantic Forest is described and compared, contributing to a better knowledge of the natural history of neotropical anurans.
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