Figure 1.

Age-related changes in infection with four helminth parasites in wild red deer. The x-axis represents age in years. Number of (a) strongyle eggs per gram; (b) fluke eggs per gram; (c), Elaphostrongylus cervi larvae per gram; (d) Dictyocualus larvae per gram. Taken from the best-fitting models, the black line represents the mean of the posterior distribution for the age effect estimate; the light grey lines are 100 random draws from the posterior to represent uncertainty. The age effect estimate, credibility intervals and p-values are given at the top of each panel. The points represent individual samples, with transparency to allow visualization of overplotting. The y-axis has been log₁₀-transformed; zero-counts (which are not possible to display on this log scale) are displayed at the bottom of the graph.