Diet and trophic niche of two sympatric physalaemus species in Central Brazil
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Data
2020
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Resumo
Given the increasing use of sympatric species to investigate niche differentiation and resource partition in biological communities,
our study analyzes diet composition differences and trophic niche overlap between the sympatric species Physalaemus cuvieri and P. atim in
the municipalities of Silvânia and Leopoldo Bulhões, Brazil. We used stomach flushing to obtain stomach contents from each individual and
identified 11 prey categories for P. cuvieri and 17 for P. atim. Isoptera had the highest proportional volume in both species. No difference
was found in the mean prey volume per stomach. Detrended correspondence analysis distribution scores indicated a greater diet breadth
for P. atim than P. cuvieri, which is consistent with a higher trophic niche breadth in P. atim than P. cuvieri. According to a multi-response
permutation procedure analysis, P. cuvieri and P. atim have different diet compositions. Our findings suggest that these congeneric species
occupy sufficiently different dietary niches to enable them to persist in sympatry.
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Anurans, Segregation, Cerrado, Food items, Physalaemus atim
Citação
GAMBALE, Priscilla Guedes; SILVA, Marlene Rodrigues da; ODA, Fabrício Hiroiuki; BASTOS, Rogério Pereira. Diet and trophic niche of two sympatric physalaemus species in Central Brazil. South American Journal of Herpetology, Washington, v. 17, n. 1, p. 63-70, 2020. DOI: 10.2994/SAJH-D-17-00100.1. Disponível em: https://bioone.org/journals/south-american-journal-of-herpetology/volume-17/issue-1. Acesso em: 23 ago. 2023.