Stop. Wait, reverse that. OK…
Another neat Eurekalert! feed story, one that offers tips for catching flies:
Caltech scientists discover mechanism for wind detection in fruit flies
Tiny, lightweight fruit flies need to know when it’s windy out so they can steady themselves and avoid being knocked off their feet or blown off course. But how do they figure out that it’s time to hunker down? According to a team led by California Institute of Technology (Caltech) scientists reporting in this week’s issue of the journal Nature, the flies have evolved a specialized population of neurons in their antennae that let them know not only when the wind is blowing, but also the direction from which it is coming.
The behavior of fruit flies in the face of a stiff breeze is remarkable in and of itself, notes David J. Anderson, the Roger W. Sperry Professor of Biology at Caltech, and a Howard Hughes Medical Institute (HHMI) Investigator. “We discovered that you can stop a fly dead in its tracks by blowing a gentle stream of air over it,” he explains, adding that the flies’ immobility is so complete, you could pick one up with a pair of chopsticks as long as a steady stream of wind was passing over the insect. Once the wind stops blowing, however, the flies immediately start walking around again.
Here’s a link to the video.