MUSEO ARGENTINO DE CIENCIAS NATURALES "BERNARDINO RIVADAVIA"
Unidad Ejecutora - UE
Continental-scale analysis reveals deep diversification within the polytypic Red-crowned Ant Tanager (Habia rubica, Cardinalidae).
LAVINIA OBLANCA, P. D,; ESCALANTE, P.; GARCIA, N. C,; BARREIRA, A. S.; TRUJILLO ARIAS, N.; TUBARO, P. L.; NAOKI, K.; MIYAKI, C. Y.; SANTOS, F.; LIJTMAER, D. A.
MOLECULAR PHYLOGENETICS AND EVOLUTION
ACADEMIC PRESS INC ELSEVIER SCIENCE
Lugar: Amsterdam; Año: 2015 vol. 89
We explored the phylogeographic patterns of intraspecific diversity in the Red-crowned Ant Tanager(Habia rubica) throughout its continent-wide distribution, in order to understand its evolutionary historyand the role of evolutionary drivers that are considered to promote avian diversification in theNeotropics. We sampled 100 individuals of H. rubica from Mexico to Argentina covering the main areasof its disjunct distribution. We inferred phylogenetic relationships through Bayesian and maximum parsimonymethodologies based on mitochondrial and nuclear markers, and complemented genetic analyseswith the assessment of coloration and behavioral differentiation. We found four deeply divergent phylogroupswithin H. rubica: two South American lineages and two Mexican and Middle American lineages.The divergence event between the northern and southern phylogroups was dated to c. 5.0 Ma, seeminglyrelated to the final uplift of the Northern Andes. Subsequently, the two South American phylogroups splitc. 3.5 Ma possibly due to the development of the open vegetation corridor that currently isolates theAmazonian and Atlantic forests. Diversification throughout Mexico and Middle America, following dispersionacross the Isthmus of Panama, was presumably more recent and coincident with Pleistocene climaticfluctuations and habitat fragmentations. The analyses of vocalizations and plumage colorationshowed significant differences among main lineages that were consistent with the phylogenetic evidence.Our findings suggest that the evolutionary history of H. rubica has been shaped by an assortmentof diversification drivers at different temporal and spatial scales resulting in deeply divergent lineagesthat we recommend should be treated as different species.