Evolution of parasite virulence against qualitative or quantitative host resistance
نویسندگان
چکیده
منابع مشابه
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. S...
متن کاملThe evolution of parasite virulence, superinfection, and host resistance.
We analyze the evolutionary consequences of host resistance (the ability to decrease the probability of being infected by parasites) for the evolution of parasite virulence (the deleterious effect of a parasite on its host). When only single infections occur, host resistance does not affect the evolution of parasite virulence. However, when superinfections occur, resistance tends to decrease th...
متن کاملHost mortality, predation and the evolution of parasite virulence
Karen Choo, Paul D. Williams and Troy Day* Department of Zoology, University of Toronto, 25 Harbord Street, Toronto, Ontario, M5S 3G5, Canada Departments of Mathematics and Biology, Jeffery Hall, Queen’s University, Kingston, Ontario, K7L 3N6, Canada *Correspondence: E-mail: [email protected] Abstract One of the most accepted views in the theoretical literature on virulence evolution is that...
متن کاملWithin-host parasite cooperation and the evolution of virulence.
Infections by multiple genotypes are common in nature and are known to select for higher levels of virulence for some parasites. When parasites produce public goods (PGs) within the host, such co-infections have been predicted to select for lower levels of virulence. However, this prediction is based on simplifying assumptions regarding epidemiological feedbacks on the multiplicity of infection...
متن کاملEvolution of parasite virulence when host responses cause disease.
The trade-off hypothesis of virulence evolution rests on the assumption that infection-induced mortality is a consequence of host exploitation by parasites. This hypothesis lies at the heart of many empirical and theoretical studies of virulence evolution, despite growing evidence that infection-induced mortality is very often a by-product of host immune responses. We extend the theoretical fra...
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ژورنال
عنوان ژورنال: Proceedings of the Royal Society of London. Series B: Biological Sciences
سال: 2000
ISSN: 0962-8452,1471-2954
DOI: 10.1098/rspb.2000.1100