The factors that affect the likelihood of infection by the end of the experimental period.

<p><b>a)</b> The standard weight of parameters in the 95% confidence interval model set and the number of candidate models that they occur in after model averaging. b) The analysis repeated on the original scale and predicted prevalence ± 1 se for males and females. c) Exploring the direction of the target effect, LA, by explicitly keeping the LA parameter in all models. Under a scenario of parasite adaptation, we expect parasites to be more infective on local hosts. Prevalence is plotted on the original scale. For further details of the method see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0141391#pone.0141391.g001" target="_blank">Fig 1</a>.