Tab-delimited text file containing sample identification information and microsatellite genotypes used in the corresponding publication. The first row contains descriptive titles for each column. The first column contains entire unique sample identifier. The second column contains the locality of sample origin. The third column contains the Daphnia magna host clone. The fourth column contains the "resistotype" as defined in the paper. The fifth column contains the locality number code. Columns 6-17 contain genotype information (alleles) for each of the 12 microsatellite loci used in this study.