structure clustering analysis of domestic and wild canids for the 44K SNP pruned data set (see Supplemental Table S2). Separate analyses of North American (n = 68) and Eurasian (n = 74) wolves further resolves biologically informative clusters (K = 7; the top layer in plot). The three captive Mexican wolf colonies (Studbook, S; Ghost Ranch, G; and Aragon, A) are shown. See discussion in the Supplemental Material for an explanation of how K values were chosen for presentation. Coyote abbreviations: Midwest/Southern, MID; Northeastern, NE; and Western, WEST. North American abbreviations: Algonquin, Alg; Isle Royale NP, IRNP; Minnesota, MN; Ontario, Ont; Wisconsin, WI; Alaska/Canada, AK/Ca; British Columbia, BC; Mexico, Mex; Northern Canada, NCa; Northern Quebec, NQue; and Yellowstone, YNP. Eurasian abbreviations: Belarus, Be; Bulgaria, Bu; Croatia, Cr; Greece, Gr; India, In; Iran, Ir; Israel, Is; Italy, It; Lithuania, Li; Middle East, ME; Oman, Om; Poland, Po; Russia, Ru; Saudi Arabia, SA; Slovakia, Sl; Southwest Asia, SWA; Spain, Sp; Sweden, Sw; Turkey, Tu; and Ukraine, Uk.
