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Temporal and spatial diversification of Pteroglossus araçaris (AVES: Ramphastidae) in the neotropics: Constant rate of diversification does not support an increase in radiation during the Pleistocene by Swati Patel; Jason D. Weckstein; José S.L. Patané; John M. Bates; Alexandre Aleixo is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

What is Temporal and spatial diversification of Pteroglossus araçaris (AVES: Ramphastidae) in the neotropics: Constant rate of diversification does not support an increase in radiation during the Pleistocene about?

We use the small-bodied toucan genus Pteroglossus to test hypotheses about diversification in the lowland Neotropics. We sequenced three mitochondrial genes and one nuclear intron from all Pteroglossus species and used these data to reconstruct phylogenetic trees based on maximum parsimony, maximum likelihood, and Bayesian analyses. These phylogenetic trees were used to make inferences regarding both the pattern and timing of diversification for the group. We used the uplift of the Talamanca highlands of Costa Rica and western Panama as a geologic calibration for estimating divergence times on the Pteroglossus tree and compared these results with a standard molecular clock calibration. Then, we used likelihood methods to model the rate of diversification. Based on our analyses, the onset of the Pteroglossus radiation predates the Pleistocene, which has been predicted to have played a pivotal role in diversification in the Amazon rainforest biota. We found a constant rate of diversification in Pteroglossus evolutionary history, and thus no support that events during the Pleistocene caused an increase in diversification. We compare our data to other avian phylogenies to better unders

Who reads Temporal and spatial diversification of Pteroglossus araçaris (AVES: Ramphastidae) in the neotropics: Constant rate of diversification does not support an increase in radiation during the Pleistocene?

Author

Swati Patel; Jason D. Weckstein; José S.L. Patané; John M. Bates; Alexandre Aleixo

Publisher

Elsevier Science; Elsevier ; Elsevier Inc.; Elsevier BV (ISSN 1055-7903)

Published

2011

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)