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- Title
Multispecies Coalescent Analysis of the Early Diversification of Neotropical Primates: Phylogenetic Inference under Strong Gene Trees/Species Tree Conflict.
- Authors
Schrago, Carlos G.; Menezes, Albert N.; Furtado, Carolina; Bonvicino, Cibele R.; Seuanez, Hector N.
- Abstract
Neotropical primates (NP) are presently distributed in the New World from Mexico to northern Argentina, comprising three large families, Cebidae, Atelidae, and Pitheciidae, consequently to their diversification following their separation from Old World anthropoids near the Eocene/Oligocene boundary, some 40Ma. The evolution of NP has been intensively investigated in the last decade by studies focusingontheirphylogeny andtimescale. However, despitemajor efforts, the phylogenetic relationshipbetweenthese three major clades andthe ageof their last commonancestor are still controversialbecause these inferenceswerebasedonlimitednumbers of loci and dating analyses that did not consider the evolutionary variation associated with the distribution of gene trees within the proposed phylogenies. We show, bymultispecies coalescent analyses of selected genome segments, spanning along 92,496,904 bp that the early diversification of extant NP was marked by a 2-fold increase of their effective populationsize and that Atelids and Cebids aremore closely related respective to Pitheciids. Themolecular phylogeny of NP has been difficult to solve because of population-level phenomena at the early evolution of the lineage. The association of evolutionary variation with the distribution of gene trees within proposed phylogenies is crucial for distinguishing the mean genetic divergence between species (themean coalescent time between loci) from speciation time. This approach, based on extensive genomic data provided by new generation DNA sequencing, provides more accurate reconstructions of phylogenies and timescales for all organisms.
- Subjects
PRIMATE genomes; NEW World monkeys; PHYLOGENY; PITHECIIDAE; PRIMATE evolution; BAYESIAN analysis; MAXIMUM likelihood statistics
- Publication
Genome Biology & Evolution, 2014, Vol 6, Issue 11, p3105
- ISSN
1759-6653
- Publication type
Article
- DOI
10.1093/gbe/evu244