Olfactory response and locomotion are unaffected by ethanol.

<p>(<b>A–C</b>) Response indices are shown for larvae when placed in the middle of an agar dish with ethyl acetate on one side and liquid paraffin on the other. The number of larvae in each odor zone was counted after 3 minutes. <b>A</b>. The Olfactory response shows a mild reduction with 30% ethanol treatment but not with 20% ethanol treatment. <b>B</b>. Larvae had been previously submerged for 20 minutes in either pure water or 20% EtOH. No significant difference was seen. <b>C</b>. Automated tracking. Left: Response index over a three-minute period when larvae are being tracked. Larvae had been previously submerged for 20 minutes in either pure water or 20% EtOH. <b>D</b>. Average speed in the absence of a stimulus is shown for larvae during the three minute tracking period. 20% EtOH did not cause a significant reduction in either locomotion speed or olfaction.