Speciation dynamics in the Australo-Papuan Meliphaga honeyeaters

Abstract

The Australo-Papuan Meliphaga honeyeaters have diversified over a wide range of habitats and elevational zones and are one of the few regionally known cryptic avian radiations. Using a combined 1580 bp of mitochondrial and nuclear DNA we investigate the species limits, systematic affinities and biogeographic history of Meliphaga. We also investigate the role of spatial sorting mechanisms, including altitudinal replacement and niche partitioning, as mechanisms underlying the adaptive radiation of this group. Phylogenetic analysis indicates that the genus Meliphaga comprises at least 16 species, three more than recognized in current classifications. The genus divides into two clades; the speci..