Figure 2: Phylogeographic structure of paraphyletic mtDNA lineages.
From: Australia’s arid-adapted butcherbirds experienced range expansions during Pleistocene glacial maxima
(a) Bayesian inference places mitochondrial ND2 haplotypes from Silver-backed Butcherbirds in two deeply divergent clades (Dxy=4.34%; uncorrected P distance=4.8%) that are grouped with either Grey Butcherbirds (Clade 1) or Black-backed Butcherbirds (Clade 2). Colours indicate nine major haplotype groups. Asterisks indicate key nodes with >0.90 posterior probability. Numbers above branches indicate posterior probability values for key nodes with <0.9 posterior probability. (b) Geographic structuring of mtDNA haplotype groups. Contours on the map show extent of land exposed at various times in the Pleistocene (10 m (dark grey), 40 m (medium grey) and 120 m (light grey) below present—data from Voris70). (c) Unrooted network of ND2 haplotypes. Black circles in the haplotype networks represent inferred, but unsampled, haplotypes. In both the map and the haplotype networks the size of the circles are proportional to sampling frequency.
