Fig. 5.

Mean number of eggs per plant (±SE) for seven different host plant species and three different regions along a latitudinal gradient. Means among species with different letter are significantly different (Tukey multiple Comparisons, P < 0.05). NA indicates that no populations of a host species were found in a region. The asterisk denotes that only one population was found. Species abbreviations: arth = Arabidopsis thaliana), thca = Thlaspi caerulescens, cabu = Capsella bursa-pastoris, capr4 = Cardamine pratensis), capr8 = Cardamine paludosa, arhi = Arabis hirsuta, and argl = Arabis glabra