Researchers have decoded why flies circle in still air, revealing behaviors that could help train robots to track chemical leaks effectively.
The team used Drosophila melanogaster’s genetic toolkit to create an optogenetic method that simulates precise “virtual” olfactory experiences for flies.Researchers have found an answer to the phenomenon of flies buzzing around in circles when the air is still and why it matters.
They also discovered another automatic behavior called “sink and circle,” where flies lower their altitude and make rapid, repetitive turns in a consistent direction. This behavior is even more consistent and repetitive than cast-and-surge.The velocity of the fluid surrounding an organism is crucial for its success when following a chemical trail to its source.
Using Drosophila melanogaster’s genetic toolkit, the team developed an optogenetic method to simulate precise “virtual” olfactory experiences for free-flying flies in wind or still air. Researchers say the findings demonstrate that Drosophila assesses wind presence and direction before choosing a search strategy. In both wind and still air, flies decelerate and perform rapid turns right after detecting an odor.
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