Figure 2.

Responses to solvents and innate preferences for single odorants (Bioassay 1). Innate preferences (% choice) and the % of insects that made a choice (% responding). (A) Effects of three solvents on the discrimination ability of males between the left and right sides of the divided tubes. N = 20 for each concentration-solvent combination. (B–H) Odor preferences for seven compounds. Total number of tested insects was 20–30 for each treatment. An asterisk (*) denotes a significant preference for the odor over the solvent control (Chi-square test, p < 0.05). Different letters indicate significant differences in % responding to each compound across concentrations and strains (for (B–H), Chi-square tests with Bonferroni corrections, p < 0.0007 (0.05/66)) (Table S1).