Scientists discovered that fruit flies utilize deliberate strategies like cast and surge to navigate towards food smells. They cast side to side when they lose the scent and surge upwind to follow it, resulting in an effective method of tracking food sources in windy environments.
In the absence of wind, fruit flies switch to a sink and circle technique. Flies spiral downward after encountering and losing an odor in still air, demonstrating an alternative approach to find the source of a smell.
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