Y-chromosome phylogeny of macaques. Maximum likelihood phylogenetic tree derived from ~2850 bp of the SRY and TSPY genes to confirm provenance of cynomolgus macaques in the original Goswami et al.  study. Notable clades are highlighted according to previous work on the subject [25, 44] and additional macaque groups are identified based on Tosi et al.  and defined in supplemental Additional file 2: Table S2, including the monospecific Arctoides (M. arctoides) and Sylvanus (M. sylvanus) groups, the Sinica group, and the Silenus group. Animals from Goswami et al.  are highlighted in red and fall within the “Continental” clade of cynomolgus macaques that includes those from Mauritius, supporting that they derived from Mauritius.