Figure 2.

Mortality of larvae fed with the S. marcescens isolates. Panel A. P. blanchardi. Mortality was recorded during 27 days after oral inoculation. Control groups were fed with pieces of carrot alone and also with carrot containing the non-pathogenic bacterium Serratia plymuthica ATCC15928. No significant differences are indicated by the same letter above the lines (χ², p < 0.01); n = 10. Panel B. Spodoptera frugiperda. Mortality was recorded during 11 days. Control groups were fed with an artificial diet where bacteria were replaced with the same amount of sterile water and S. plymuthica ATCC15928. No significant differences between treatments were observed (χ², p < 0.05).