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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Distribution and diversification of Adelphobates, emblematic poison frogs from Brazilian Amazonia

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Author(s):
LARISSA A. DE MEDEIROS [1] ; EDUARDO GENTIL [2] ; IGOR L. KAEFER ; MARIO COHN-HAFT
Total Authors: 4
Affiliation:
[1] Instituto Nacional de Pesquisas da Amazônia. Programa de Pós-Graduação em Ecologia - Brasil
[2] Instituto Nacional de Pesquisas da Amazônia. Programa de Pós-Graduação em Ecologia - Brasil
Total Affiliations: 4
Document type: Journal article
Source: Anais da Academia Brasileira de Ciências; v. 96, n. 1 2024-04-19.
Abstract

Abstract Adelphobates contains three species, and the inaccurate identification of A. quinquevittatus and the scarcity of records of A. castaneoticus complicate inference of their distributions; the latter species occurs in sympatry with A. galactonotus. Our objective was to revise the distributions of Adelphobates by compiling data and modeling habitat suitability, as range limits may be shaped by landscape features and biotic interactions. We initially analyzed the existence of operational taxonomic units within the nominal species and subsequently inferred the observed and potential distributions, taking into account the possible independent lineages for the three species, and we also generated a molecular timetree to understand the chronology of interspecific diversification events. Adelphobates quinquevittatus was found to have a more easterly distribution than previously described, and specimens with phenotypic variation were found to occur in areas inconsistent with the modeling, and A. castaneoticus was concentrated in the Tapajós-Xingu interfluve, surrounded by A. galactonotus. Models indicated that the right bank of the Xingu River is suitable for both species, indeed, both were found there. Despite Adelphobates species having their distributions delimited by major Amazonian rivers, estimated divergence times predate the formation of the modern river network, suggesting that other mechanisms were involved in their diversification. (AU)

FAPESP's process: 12/50260-6 - Structure and evolution of the Amazonian biota and its environment: an integrative approach
Grantee:Lúcia Garcez Lohmann
Support Opportunities: BIOTA-FAPESP Program - Thematic Grants