fruit flies

Episode 36: Fightin' Flies


I personally have never been in a fight, so I can't say for sure what my fighting style would look like. But I can speculate. It would probably involve me taking a single girly swing at my opponent, jamming up a knuckle, and then starting to cry. The good news is that it might not be my fault I'm such a sissy. According to Harvard neuroscientist Edward Kravitz, there may be a genetic explanation. Or at least there would be if I were a fruit fly. Male and female fruit flies use very different fighting techniques, and Kravitz has discovered that by manipulating a single gene, he can transfer these gender-specific moves into the opposite sex.

I never know whether or not these scientists and I are going to agree on what's funny about their research. I certainly wouldn't blame them if they didn't find it funny at all—I mean, it is their job and everything. But let's face it, a fruit-fly Thunderdome is pretty hilarious, especially when you think about those poor little male fruit flies head-butting each other like a bunch of girls. Luckily, Edward Kravitz was very tolerant of my slightly goofy interview
approach. I could tell even before we got to the story about
accidental head-crushing. —Jonathan
Coulton

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A Cure for Jet Lag

Groggy fruit flies could lead to the perfect sleeping pill for time-zone hoppers

Geneticist Amita Sehgal of the University of Pennsylvania was recently studying fruit flies in her lab when she noticed something peculiar. The insects slept normally when bathed in light for 24 hours a day but tossed and turned when shifted from one day/night cycle, or “time zone,” to another. It turns out they were suffering from something akin to serious jet lag.

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