Figure 3

Behavioral responses of 7-day-old virgin males to acetic acid in a 4-way olfactometer. Male first and final choices when comparing treatments with (A) 0.1, (C) 1, and (E) 10 µg of acetic acid vs. control. Comparison of residence times in each treatment vs. control with acetic acid at (B) 0.1, (D) 1, and (F) 10 µg. Male preference indicates the proportion of males making first and final choice. Means were compared by Wilcoxon matched-pairs signed-rank tests. AA = acetic acid.