Figure 2.

Strain-specific prevalence following single/double exposures and infection intensity in single infections. Black bars represent the prevalence (top axis) of Crithidia bombi strains A–E in (a) naive hosts and (b) challenged hosts following single (‘1’) and double (‘2’, irrespective of the identity of the co-inoculated strain) in vivo inoculations. Grey bars represent infection intensity (bottom axis, units: cells μl⁻¹ of gut extract, mean ± s.e.) in infected hosts following single inoculation. Data for the strain-specific infection intensity in double infections are not available (*p < 0.05).