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Proc Biol Sci. May 22, 2000; 267(1447): 985–990.
PMCID: PMC1690632

Evolution of parasite virulence against qualitative or quantitative host resistance.


We analysed the effects of two different modes of host resistance on the evolution of parasite virulence. Hosts can either adopt an all-or-nothing qualitative response (i.e. resistant hosts cannot be infected) or a quantitative form of resistance (i.e. which reduces the within-host growth rate of the parasite). We show that the mode of host resistance greatly affects the evolutionary outcome. Specifically, a qualitative form of resistance reduces parasite virulence, while a quantitative form of resistance generally selects for higher virulence.

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Selected References

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Articles from Proceedings of the Royal Society B: Biological Sciences are provided here courtesy of The Royal Society


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