Fig. 1

Amino acid sites under positive selection in bats. Sites under selection in partial coding sequences of the genes acp5, anxa1, aqp3, bcam and ptch2 were identified phylogenetically for 1–11 individuals of each species using a maximum likelihood framework. The pie charts displayed show the relative frequency of amino acids in each sample. Numbers above the alignment positions refer to the amino acid’s position in the reference (see Table 2). The phylogenetic tree depicts relationships pruned from a previously published multilocus phylogeny [70]. P = bat species distributed in the Palearctic, N = Nearctic, A = Afrotropical