Figure titles and legends
Figure 1. Venn diagram of orthologs genes for 8 species.
Figure 2. Maximum-likelihood tree constructed based on 1,233 one to one single copy orthologs genes of 8 species. Colored branches indicate bat species within the macrotis group. Orange and blue lines represent species with low and normal echolocation frequency relative to body size respectively.
Figure 3. dN/dS values for each species calculated from sequence of concatenated homologous genes.
Figure 4. Venn diagram of positively selected genes selected from branches of species within the macrotis group.
Figure 5. A part of amino acid sequence alignments of the genes related to hearing. (a)-(f) In these sequences, the first and the last positive selected sites were labeled, and the posterior probability of corresponding sites were represented. The species used to test the amino acid change were indicated by a line. (g) The positive selected sites were labeled and the posterior probability of corresponding sites were represented. The same amino acid change occurred in R. osgoodiand R. pusillus were indicated by the line.