Figure 1.

Endosymbiont infection rates in living unparasitized aphids, living parasitized aphids and mummies collected within unfertilized (light blue) and fertilized plots (dark blue). Different letters indicate significant differences between groups (p < 0.05); note, however, that the difference between the infection rates in mummies from unfertilized and fertilized plants was almost significant at p = 0.06. The bottom/top of the box and the whiskers correspond to the 75% confidence interval and 95% confidence interval, respectively