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Population genetic structure results of Culicoides imicola. a Genetic clustering of C. imicola samples. Each vertical line represents an individual and each colour represents a cluster. b Microsatellite neighbor-joining tree based on genetic distance of Cavalli-Sforza & Edwards (1967). Bootstrap values are calculated over 1,000 replicates (only values > 50 % are shown). c Principal Component Analysis based on microsatellite allelic frequencies
