Table 1.

Pathogens that vary in biology and virulence were used for infection of virgin and mated female D. melanogaster. Per cent mortality is averaged across virgin and mated females, and natural pathogens are those that have been isolated from the hemolymph and/or thoracic muscle of wild-caught D. melanogaster (see §2 for details).

pathogen	virulence level	natural pathogen
P. rettgeri	moderate (approx. 40% mortality)	yes
P. alcalifaciens	high (approx. 98% mortality)	yes
E. faecalis	moderate (approx. 60% mortality)	yes
Ps. aeruginosa	high (100% mortality)	no (strain PAO1)