Daphnia dentifera population dynamics and infection prevalence. Left axis: proportion of D. dentifera population infected with Metschnikowia (circles); proportion of population that are males (squares); proportion of population that are sexual females (open triangles). Right axis: instantaneous population growth rate (r; dashed line). Arrows indicate dates on which clones were collected for assays: first arrow: pre-epidemic, second arrow: post-epidemic, third arrow: post-sex sampling. Locally weighted (lowess) smoothing lines are shown.