Figure 6From: Genetic differentiation of European grayling (Thymallus thymallus) populations in Serbia, based on mitochondrial and nuclear DNA analysesEstimated population structure as inferred by STRUCTURE analysis of microsatellite marker DNA data. Black lines separate sampling sites, the most probable K = 4 is based on ΔK method [47]; no further structures were detected in subsequent rounds and within sampling locations (K = 1)Back to article page