Genetic evidence for sable x roan hybridization in Cangandala National Park, Angola.
(a) First and second components of a principal components analysis (PCA) of 51 microsatellite genotypes from 90 Hippotragus spp. samples; ovals are 95% inertia ellipses; the inset shows the distribution of eigenvalues for all principal components. (b) Individual assignment to genetic clusters (K = 2) inferred by Bayesian analyses (STRUCTURE); arrows indicate first generation backcrosses to roan confirmed by NewHybrids analysis. Phenotypically intermediate individuals are located between roan and sable in the PCA biplot and they are partially assigned to both species in the STRUCTURE analysis.