title: Molecular phylogenetics and biogeography of Neotropical piping guans (Aves: Galliformes): Pipile Bonaparte, 1856 is synonym of Aburria Reichenbach, 1853.
abstract: The Cracidae are Neotropical galliform birds with 11 genera currently recognized. To investigate the questioned validity of Pipile Bonaparte, 1856 and the monotypic Aburria Reichenbach, 1853 as separate genera, we gathered data from 2727 bp of mitochondrial DNA (cytochrome b, ND2 and control region) and 151 osteological characters. Our phylogenetic analyses of DNA sequences indicated that Aburria aburri is embedded within Pipile. Also, genetic distances between Aburria and any Pipile species are equivalent to the distances estimated for other congeneric cracid species, which genus status is not doubtful. Although the osteological characters do not have phylogenetic signal to solve the phylogenetic relationships at species level, five synapomorphies were found for Aburria and Pipile. Therefore, we suggest that Pipile should be merged with Aburria, which is the oldest described genus. We estimated that speciation in this group occurred in the Plio-Pleistocene, concordant with other birds, primates and rodents that have similar geographic distribution, and proposed a diversification hypothesis based on the occurrence of sea transgressions and the formation of the Amazon Lagoon. Therefore, we conclude that these palaeogeographic events may have contributed to Neotropical taxa diversification to a greater extent than previously suspected.
authors.affiliation: Departamento de Biologia, Universidade de São Paulo, Caixa Postal 11461, CEP 05422-970, São Paulo, Brazil.
authors.forename: Erwin T
authors.initials: ET
authors.lastname: Grau
authors.forename: Sérgio Luiz
authors.initials: SL
authors.lastname: Pereira
authors.forename: Luís Fábio
authors.initials: LF
authors.lastname: Silveira
authors.forename: Elizabeth
authors.initials: E
authors.lastname: Höfling
authors.forename: Anita
authors.initials: A
authors.lastname: Wajntal
mesh_terms: D000818:Animals; D001483:Base Sequence; D001499:Bayes Theorem; D004272:DNA, Mitochondrial / Q000235:genetics; D019143:Evolution, Molecular; D046094:Galliformes / Q000033:anatomy & histology / Q000145:classification / Q000235:genetics*; D005843:Geography; D055593:Geological Phenomena; D005844:Geology; D016013:Likelihood Functions; D008957:Models, Genetic; D008969:Molecular Sequence Data; D010802:Phylogeny; D017422:Sequence Analysis, DNA; D013020:South America; D013045:Species Specificity
chemical_list: D004272:DNA, Mitochondrial