Fig. 4: Quantitative Trait Locus analysis of P. ramosa attachment to the host Daphnia magna.

a LOD scores for Pasteruia attachment plotted against the entire genome of Daphnia magna. P. ramosa C19 attachment to the Daphnia magna foregut shown in red and P. ramosa P15 attachment to the hindgut shown in black. The dashed line represents the significance threshold at P = 0.05. b Effect plot for P15 attachment of host genotypes at QTL detected in lg3 and lg9. The German parent clone (Iinb3) of the QTL panel has genotype CC at lg3 and dd at lg9, whereas the Finnish parent clone (Xinb3) has genotype cc at lg3 and DD at lg9. Variation shown along the x axis corresponds to the D locus, while the three colored lines represent variation at the C locus.