Recovering the evolutionary history of crowned pigeons (Columbidae: Goura): Implications for the biogeography and conservation of New Guinean lowland birds.

摘要: Assessing the relative contributions of immigration and diversification into buildup species diversity is key to understanding role historical processes in driving biogeographical patterns species-rich regions. Here, we investigated how colonization, situ speciation, extinction history may have generated present-day distribution Goura crowned pigeons (Columbidae), a group large forest-dwelling comprising four recognized that are all endemic New Guinea. We used comprehensive geographical taxonomic sampling based mostly on museum samples, shallow shotgun sequencing, generate complete mitogenomes, nuclear ribosomal clusters independent conserved DNA elements. these datasets independently reconstruct molecular phylogenies. Divergence time estimates were obtained using mitochondrial data only. All analyses revealed similar genetic divisions within genus recovered as monophyletic groups currently recognized, providing support for recent changes differences plumage characters. These grouped two pairs strongly supported sister species, which previously not close relatives: sclaterii with cristata, victoria scheepmakeri. While origin lineage remains elusive, crown age 5.73 Ma consistent being result Although orogeny Guinea's central cordillera must played Goura, cross-barrier dispersal seems more likely than vicariance explain speciation events having led current species. Our results also important conservation implications. Future assessments status should consider threat levels following revision proposed by del Hoyo Collar (HBW BirdLife International illustrated checklist birds world 1: non-passerines, 2014), show be fully genomic data. In particular, distinguishing G. from scheepmakeri particularly relevant.