Figure 7.

Inhibition of odorant induced, but not CO₂ induced, SSR responses of fruit fly antennae by an Orco antagonist. (A) Top, SSR recordings from an ab2 sensillum of a single insect exposed sequentially to stimulus pulses (500 ms) of air, 0.1% EA, 0.1% EA + 1% BMP, and 0.1% EA. Bottom, graphic representation of repetitions (n = 3) of the experiments shown above. Data are presented as mean ± SEM and were compared by one-way ANOVA and Tukey’s multiple comparison test. 0.1% EA bars differ from Air (p < 0.001). Bars labeled with the same letters are not significantly different (p > 0.05). (B) Top, SSR recordings from an ab1 sensillum of a single insect exposed sequentially to stimulus pulses (500 ms) of air, CO₂ (see Methods), and CO₂ + 1% BMP. Bottom, graphic representation of repetitions (n = 3) of the experiments shown above. Data are presented as mean ± SEM and were compared by one-way ANOVA and Tukey’s multiple comparison test. CO₂ and CO₂ + 1% BMP bars differ from Air (p < 0.0001). Bars labeled with the same letters are not significantly different (p > 0.05).