pH 5.5 5.1 4.8 4.5 V. cardui 4.4 ± 0.6a 3.6 ± 0.3a 4.3 ± 0.5a 3.5 ± 0.6a H. virescens 4.2 ± 0.4a 3.6 ± 0.3a 3.9 ± 0.2a 3.6 ± 0.4a Mean ± SEM followed by the same letter within rows are not significantly different (P<0.05, Friedman test [JMP 10)

Table 6: Number of larvae fed on different diet cylinders with different pH.