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Anger is Contagious in Fruit Flies That "sniff the Anger Pheronome"

by Trilok on December 31, 2009 at 10:23 AM Research News

Is it possible to smell anger? Well, if you are a fruit fly, yes is the answer, says a new study conducted over them.

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Researchers from the California Institute of Technology (Caltech) showed that a whiff of a rage-inducing pheromone can turn otherwise peaceful fruit flies into aggressors.

"Not only did we identify the pheromone that leads to aggression and its neuron, but we were able to manipulate the ability of the flies to increase aggression," Discovery News quoted David Anderson, a scientist at Cal Tech and co-author of the study as saying.

During the study, researchers dropped filter paper soaked in artificially produced pheromone, known as 11-cis-vaccenylacetate (CVA), into the air around six flies.

They found that flies quickly turned violent against their opponents, rearing up on their hind legs and snapping down, and grappling with their forelegs.

Natural CVA is found in the hard exoskeletons of flies and theoretically released when the flies bump against each other.

This also enrages flies.

While conducting the experiments, researchers kept 100 fruit flies into a container with tiny holes on the top and watched as the flies fought, releasing ever-greater amounts of CVA.

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Anger is Contagious in Fruit Flies That "sniff the Anger Pheronome"

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