In: Molecular Ecology, 2012, vol. 21, no. 4, p. 851–861
Theory predicts that genetic diversity and genetic differentiation may strongly vary among populations of the same species depending on population turnover and local population sizes. Yet, despite the importance of these predictions for evolutionary and conservation issues, empirical studies comparing high-turnover and low-turnover populations of the same species are scarce. In this study, we...
|
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...
|
In: Restoration Ecology, 2009///doi:10.1111/j.1526-100X.2008.00454.x
The increased translocation of plant species for biodiversity restoration and habitat creation has provoked a debate on provenance and genotypic diversity of the used plant material. Nonlocal provenances are often not adapted to the local environmental conditions, and low population genotypic diversity may result in genetic bottlenecks hampering successful establishment. We tested provenance...
|
In: Journal of Evolutionary Biology, 2008///doi:10.1111/j.1420-9101.2008.01541.x
Although there is little doubt that hosts evolve to reduce parasite damage, little is known about the evolutionary time scale on which host populations may adapt under natural conditions. Here we study the effects of selection by the microsporidian parasite Octosporea bayeri on populations of Daphnia magna. In a field study, we infected replicated populations of D. magna with the parasite,...
|
In: Proceedings of the Royal Society of London: Biological Sciences, 2004, vol. 271, p. 2149-2155
In metapopulations, only a fraction of all local host populations may be infected with a given parasite species, and limited dispersal of parasites suggests that colonization of host populations by parasites may involve only a small number of parasite strains. Using hosts and parasites obtained from a natural metapopulation, we studied the evolutionary consequences of invasion by single strains...
|
