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dc.creatorSantos, Juan Cen
dc.creatorColoma, Luis Aen
dc.creatorSummers, Kyleen
dc.creatorCaldwell, Janalee Pen
dc.creatorRee, Richarden
dc.creatorCannatella, David Cen
dc.identifier.citationSantos JC, Coloma LA, Summers K, Caldwell JP, Ree R, et al. (2009) Amazonian Amphibian Diversity Is Primarily Derived from Late Miocene Andean Lineages. PLoS Biol 7(3): e1000056. doi:10.1371/journal.pbio.1000056en
dc.descriptionJuan C Santos is with UT Austin, Luis A Coloma is with Pontificia Universidad Católica del Ecuador, Kyle Summers is with East Carolina University, Janalee P Caldwell is with University of Oklahoma, Richard Ree is with the Field Museum of Natural History, David C Cannatella is with UT Austin.en
dc.description.abstractThe Neotropics contains half of remaining rainforests and Earth's largest reservoir of amphibian biodiversity. However, determinants of Neotropical biodiversity (i.e., vicariance, dispersals, extinctions, and radiations) earlier than the Quaternary are largely unstudied. Using a novel method of ancestral area reconstruction and relaxed Bayesian clock analyses, we reconstructed the biogeography of the poison frog clade (Dendrobatidae). We rejected an Amazonian center-of-origin in favor of a complex connectivity model expanding over the Neotropics. We inferred 14 dispersals into and 18 out of Amazonia to adjacent regions; the Andes were the major source of dispersals into Amazonia. We found three episodes of lineage dispersal with two interleaved periods of vicariant events between South and Central America. During the late Miocene, Amazonian, and Central American-Chocoan lineages significantly increased their diversity compared to the Andean and Guianan-Venezuelan-Brazilian Shield counterparts. Significant percentage of dendrobatid diversity in Amazonia and Chocó resulted from repeated immigrations, with radiations at <10.0 million years ago (MYA), rather than in situ diversification. In contrast, the Andes, Venezuelan Highlands, and Guiana Shield have undergone extended in situ diversification at near constant rate since the Oligocene. The effects of Miocene paleogeographic events on Neotropical diversification dynamics provided the framework under which Quaternary patterns of endemism evolved.en
dc.description.sponsorshipThe National Science Foundation provided support to KS (DEB-0134191), JPC (DEB-9200779 and DEB-9505518 to L.J. Vitt and JPC), DCC (EF-0334952), and JCS (DDIG DEB-0710033 under Institutional Animal Care and Use Committee [IACUC] protocol 05111001). RR acknowledges feedback from working groups at the National Evolutionary Synthesis Center (NESCent, NSF EF-0423641). LAC was supported by funds provided by Unidad de Cooperación para el Desarrollo de los Pueblos (UCODEP) (AIDCO/B7–6200/0380/01/TF), and the Dirección General Académica of the Pontificia Universidad Católica del Ecuador. JCS was also supported by University of Texas Ecology, Evolution and Behavior (EEB) Graduate Research Fellowships.en
dc.publisherPublic Library of Scienceen
dc.rightsAttribution 3.0 United Statesen
dc.subjectMiocene epochen
dc.subjectSpecies extinctionen
dc.titleAmazonian Amphibian Diversity Is Primarily Derived from Late Miocene Andean Lineagesen
dc.description.departmentBiological Sciences, School ofen

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Attribution 3.0 United States
Except where otherwise noted, this item's license is described as Attribution 3.0 United States