Fig. 1From: Postglacial recolonizations, watershed crossings and human translocations shape the distribution of chub lineages around the Swiss AlpsOverview of the study region. Sampling sites are represented by pie charts indicating the relative frequencies of mitochondrial haplotypes found at these sites. Sample sizes are in brackets. Catchments are outlined by black borders and shipping channels connecting catchments are annotated with their names in blue font. The small embedded map shows the location of the study site within EuropeBack to article page