Figure 2

Structure–activity relationship between the 15 compounds tested. The control received only solvent (see text). (A) Number of dead mites (out of a total of five mites/replicate), counted 3 h (blue) and 5 h (red) after start of the experiment. (B) Total number of paralyzed and dead mites counted 3 h (blue) and 5 h (red) after start of the experiment. Bars represent mean ± S.E. of 6–12 replicates. Letters: comparison between treatments in each time group—ANOVA Tukey, columns marked with different letters differ significantly P < 0.05: lower case = 3 h, upper case = 5 h. Brackets above the letters indicate a significant difference between the 3 h and 5 h measurements for that compound (P < 0.05).