Figure 6. Host switches did not affect larval performance.Larvae were reared on Urtica , Salix or Ribes and
moved to a new host plant when reaching the 5th instar (n=9-10 per
treatment). To measure larval performance the daily growth rate was
calculated as log(mass in µg)/developmental time. No significant
differences in the growth rate were found between the different
treatments. The average age of larvae when they reached the 5th instar
and were, thus, switched to a new host is indicated by the vertical
line. 95% confidence interval is shown as shading for the smoothed
curves. The letters on top of each panel represent the plants involved
in the host switch. The first letter pair corresponds to Host 1, the
second letter pair to Host 2. Ud=Urtica dioica , Sc=Salix
caprea , Ru=Ribes uva-crispa .