Hold on to your seatbelt for this one.
Professor Elwyn Isaac from England’s University of Leeds has
just discovered
an astonishing behavior among fruit flies: after mating, females ditch their usual afternoon siesta in favor of engaging in
intense foraging (ahem, that would be akin to domestic-type duties or
housework).
The trigger? A “sex peptide”
that is produced in the males’ accessory gland, the equivalent of the human
prostate, and attaches itself to the surface of the sperm’s tail.
This sex peptides appears to have a chemical effect on the
female, preventing her from taking her usual afternoon nap. This suggest the
behavioral change has a purpose: to prepare
females for the birth of offspring, and ensure successful paternity after
mating.
Okay, so maybe you’re not so impressed about new tidbit
about how the fruit fly—that buggy nuisance you see on rotting fruit and
vegetables—mates and changes behavior. But fruit flies, if you recall from high
school biology days, have been the center of attention in research circles for
decades. For starters, the fruit fly’s genome has been fully mapped, so wide
ranging genetic studies are possible. In terms of sleep studies: