Supplementary table 1 from Migration promotes plasmid stability under spatially heterogeneous positive selection

Raw data from immigration experiment. Data are shown as raw colony counts and converted to population density (cfus/ml). Counts of were taken from 2 plate types; skimmed milk agar + X-gal with no mercury (grey) which gives counts for the whole population and skimmed milk agar + X-gal + mercury (pink) which gives mercury resistant and therefore plasmid + counts only. From each plate 4 genotypes can be distinguished: GAC+ lacz- (GacAS positive, resident), gac- lacz- (GacAS negative, resident), GAC+ LACZ+ (GacAS positive, immigrant), gac- LACZ+ (GacAS negative, immigrant). Colony counts are then converted to population density (cfu/ml) based on the dilution factor counted (selecting the dilution with the most countable colonies).