Additional file 3.
Vector graph of a PCA analysis of genotypes of all duck species. First and second axes are plotted against each other (explained variation in brackets). Grey dots represent individuals designated as Anas platyrhynchos at sampling. Other colours indicate other duck species. A tentative hybrid between Anas acuta and Anas platyrhynchos is in red. Labels next to the dots represent individual study IDs. This file is scalable in order to retrieve details if needed.
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Kraus et al. BMC Evolutionary Biology 2012 12:45 doi:10.1186/1471-2148-12-45