Use este identificador para citar ou linkar para este item: https://repositorio.inpa.gov.br/handle/1/17947
Título: Identifying biases at different spatial and temporal scales of diversification: A case study in the Neotropical parrotlet genus Forpus
Autor: Smith, Brian Tilston
Ribas, Camila Cherem
Whitney, Bret Myers
Hernández-Baños, Blanca Estela
Klicka, John T.
Palavras-chave: Dna, Mitochondrial
Animals
Biodiversity
Biological Model
Cell Nucleus
Dna Sequence
Genetics
Parrot
Species Differentiation
Animal
Biodiversity
Cell Nucleus
Dna, Mitochondrial
Genetic Speciation
Models, Genetic
Parrots
Sequence Analysis, Dna
Aves
Forpus
Psittacidae
Data do documento: 2013
Revista: Molecular Ecology
É parte de: Volume 22, Número 2, Pags. 483-494
Abstract: The temporal origins of the extraordinary biodiversity of the Neotropical region are highly debated. Recent empirical work has found support for alternative models on the tempo of speciation in Neotropical species further fuelling the debate. However, relationships within many Neotropical lineages are poorly understood, and it is unclear how this uncertainty impacts inferences on the evolution of taxa in the region. We examined the robustness of diversification patterns in the avian genus Forpus by testing whether the use of different units of biodiversity (i.e. biological species and statistically inferred species) impacted diversification rates and inferences regarding important biogeographic breaks in the genus. We found that the best-fit model of diversification for the biological species data set was a declining rate of diversification; whereas a model of constant diversification was the best-fit model for statistically inferred species or subspecies. Moreover, the relative importance of different landscape features in delimiting genetic structure across the landscape varied across data sets with differing units of biodiversity. Patterns based on divergence times among biological species indicated old speciation events across major geographic and river barriers. In contrast, data sets more inclusive of the diversity in Forpus illustrate the role of both old divergence across major landscape features and more recent divergences that are possibly attributed to Pleistocene climatic changes. Overall, these results indicate that conflicting models on the temporal origins of Neotropical birds may be attributable to sampling biases. © 2012 Blackwell Publishing Ltd.
DOI: 10.1111/mec.12118
Aparece nas coleções:Artigos

Arquivos associados a este item:
Não existem arquivos associados a este item.


Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.