Bayesian phylogenetic trees of gibbons. (A) Species tree inferred based on sequences from 14 autosomal loci of 44 gibbon individuals (this study). (B) Mtgenome tree inferred based on mtgenome sequences of 49 gibbon individuals excluding the control regions (Additional file 1; ). (C) Y chromosome tree inferred based on the partitioned concatenated dataset of seven Y chromosomal regions of 26 gibbon individuals . The support values for the nodes according to the Bayesian posterior probability (PP) are shown as the circles (filled circles: PP ≥0.85; grey circles; 0.70 < PP < 0.85; open circles: PP <0.50). The colored boxes indicate species of taxa.