Figure 4.

Inheritance of transmission stage production. Impact of the parasite genotype on the average number of cercariae produced for each major and minor QTL linked to transmission stage production. On chr. 1 and chr. 4, cercarial production is not significantly different when parasites are homozygous for the “low shedding” allele (LL) or heterozygous (LH) but only when parasites are homozygous for the “high shedding” allele (i.e. HH). High shedding allele (H) is recessive and low shedding allele (L) is dominant. On chr. 2, chr. 3 and chr.5, cercarial production is significantly different for all the three parasite genotypes encountered (LL, LH and HH). high and low shedding alleles act co-dominantly. Cercarial productions from parasite genotypes (LL, LH, HH) not connected by the same letter for a given locus are significantly different (post-hoc test)