Figure 2
From: Immune function and parasite resistance in male and polymorphic female Coenagrion puella
Graphs illustrating the mean abundance of parasites on males, blue (andromorph) females, blue green females and green females of Coenagrion puella in two populations. The top graph shows water mite abundance in 2003, the panel in the middle shows the watermite abundance in 2004, and the bottom panel depicts the abundance of gregarines in 2004. Means for natural parasite infection and standard errors are shown.