title: Phylogeny and biogeography of the fruit doves (Aves: Columbidae).
abstract: We reconstruct the phylogeny of fruit doves (genus Ptilinopus) and allies with a dense sampling that includes almost all species, based on mitochondrial and nuclear sequence data. We evaluate the most likely biogeographic scenario for the evolution of this group that colonized many islands of the Pacific Ocean. We also investigate the evolution of one of the main plumage character of fruit doves (the color of the crown), and we propose several revisions of the group's systematics. All Ptilinopus taxa formed a monophyletic group that includes two morphologically distinct genera, Alectroenas and Drepanoptila, confirming a previous result found with less species and genes. The divergence time analysis suggests that the basal divergences within Ptilinopus dated to the Early Oligocene, and the biogeographic analysis indicates that fruit doves originated most probably from the proto New Guinea region. The earliest dispersals from the New Guinea region to Oceania occurred with the colonization of New Caledonia and Fiji. A large group of Polynesian species (Central and Eastern), as well as the three taxa found in Micronesia and four species from the Guinean-Moluccan region, form the "purpuratus" clade, the largest diversification of fruit doves within Oceania, which also has a New Guinean origin. However, the eastbound colonization of fruit doves was not associated with a significant increase of their diversification rate. Overall, the Melanesian region did not act as a cradle for fruit doves, in contrast to the New Guinea region which is found as the ancestral area for several nodes within the phylogeny.
authors.affiliation: Natural History Museum of Geneva, Department of Mammalogy and Ornithology, CP 6434, CH 1211 Geneva 6, Switzerland. Electronic address: alice.cibois@ville-ge.ch.
authors.forename: Alice
authors.initials: A
authors.lastname: Cibois
authors.forename: Jean-Claude
authors.initials: JC
authors.lastname: Thibault
authors.forename: Céline
authors.initials: C
authors.lastname: Bonillo
authors.forename: Christopher E
authors.initials: CE
authors.lastname: Filardi
authors.forename: Dick
authors.initials: D
authors.lastname: Watling
authors.forename: Eric
authors.initials: E
authors.lastname: Pasquet
mesh_terms: D000818:Animals; D002467:Cell Nucleus / Q000235:genetics; D010856:Columbidae / Q000235:genetics*; D004272:DNA, Mitochondrial / Q000235:genetics; D005367:Fiji; D009510:New Caledonia; D009512:New Guinea; D044349:Oceania; D010140:Pacific Ocean; D010802:Phylogeny; D058974:Phylogeography; D017422:Sequence Analysis, DNA
chemical_list: D004272:DNA, Mitochondrial
keywords: Island biogeography; Molecular phylogeny; New Guinea; Pacific Ocean; Polynesia; Ptilinopus