Genetic mapping and characterisation of triclabendazole resistance in the liver fluke, Fasciola hepatica The liver fluke Faciola hepatica is a parasite of global significance to the livestock industry. Triclabendazole is the treatment of choice given its activity against juvenile and adult stages of the parasite. However, resistance has developed to this drug. We performed genetic mapping to localise the region under selection followed by analysis of field isolates to further validate and characterise the molecular basis of triclabendazole resistance. Full details of the methods and locus positions are available in the publication linked to this data set. 1. LGC Genotyping Raw data received from LGC Genomics giving a genotype for each individual Fasciola hepatica parasite at each locus Columns = each locus genotyped Rows = each parasite genotyped ? = genotyping unsuccessful *DNA sample IDs as follows: AS2_*_r = Parental FhLivR1 AS2_*_s = Parental FhLivS1 41_*; 42_*; 43_*; 44_* = F1 cross untreated animals 45_*; 46_* = F1 cross treated animals 1876_*; 1893_*; 1895_*; 1903_*; 1905_* = F2 cross Experiment 1 untreated animals 1880_*; 1888_*; 1891_*; 1899_*; 1901_* = F2 cross Experiment 1 treated animals 115_*; 116_*; 119_*; 120_*; 124_* = F2 cross Experiment 2 untreated animals 111_*; 112_*; 113_*; 114_* = F2 cross Experiment 2 treated animals ** Locus IDs as follows: scaffoldNumber_locusNumber shading indicates monomorphic locus