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Université de Fribourg

Benefits of host genetic diversity for resistance to infection depend on parasite diversity

Ganz, Holly H. ; Ebert, Dieter

In: Ecology, 2010, vol. 91, no. 5, p. 1263–1268

Host populations with high genetic diversity are predicted to have lower levels of infection prevalence. This theory assumes that host genetic diversity results in variation in susceptibility and that parasites exhibit variation in infectivity. Empirical studies on the effects of host heterogeneity typically neglect the role of parasite diversity. We conducted three laboratory experiments...

Université de Fribourg

Host starvation decreases parasite load and mean host size in experimental populations

Pulkkinen, Katja ; Ebert, Dieter

In: Ecology, 2004, vol. 85, p. 823-833

While host stress in vertebrate populations has often been linked to outbreaks of epidemics, which are attributed to the immuno-compromise of the stressed hosts, no predictions have been made about the response of invertebrate host populations to stressful conditions. Experiments conducted on individual invertebrate hosts, however, suggest that starved hosts may be a poor resource for...

2 results 1