IBAM   22618
INSTITUTO DE BIOLOGIA AGRICOLA DE MENDOZA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
DIVERSIFICATION AND BIOGEOGRAPHIC LINKS BETWEEN THE ANDEAN AND ATLANTIC FORESTS: NICHE MODELS AND PHYLOGEOGRAPHY OF TWO PASSE
Autor/es:
SANTOS FABRICIO; DANTAS GISELE; GOMEZ MARIA; CALDERÓN LUCIANO; WITT CHRISTOPHER ; NAOKI KAZUYA; CABANNE GUSTAVO S.; TRUJILLO-ARIAS NATALIA; MIYAKI CRISTINA; ARBELAEZ-CORTES ENRIQUE; TUBARO PABLO L.
Lugar:
Puerto Iguazú
Reunión:
Congreso; Ornithological Congress of the Americas; 2018
Institución organizadora:
Association of Field Ornithologists, Sociedade Brasileira de Ornitologia, Aves Argentinas
Resumen:
The Andean central forests are separated from the Atlantic Forest by the Chaco and theCerrado. Despite this isolation, both rainforests share closely related lineages, whichsuggest a past connection between them. However, little is known about the timing andthe distribution of these forest connections. In this study, we used two passerines(Arremon flavirostris and Trichothraupis melanops) as models to evaluate whether theAndean and the Atlantic forests act as a refugia system, as well as to test the history ofthe biogeographic connection between them. Also, we evaluated the molecularsystematic of intraspecific lineages of studied species. We performed phylogeographicanalyses based on mitochondrial and nuclear genes, and used Approximate BayesianComputation (ABC), as well as performed niche similarity analyses and modelled thecurrent and past distribution. The major phylogeographic disjunction within the twospecies occurred during the Mid-Pleistocene and between the Andes and the Atlanticregions. The phylogeographic and ABC analyses supported that the Cerrado was themain route of connection between these regions, but without giving evidence against aChaco connection. Paleodistribution models indicated connections between theserainforests in different periods and through the Chaco and Cerrado. Our study suggeststhat the biodiversity of the Andean and of the Atlantic forests could have been impactedby cycles of connections through the Cerrado and Chaco. These recurrent connectionsbetween regions could have been important for the diversification of forest taxa bypromoting events of dispersion and colonization between regions. We proposed tosplit A. flavirostris into two full species.