The normally solitary insects cluster when the brain chemical serotonin is high. The finding may be a step toward preventing crop damage, an expert says. Desert locusts are normally solitary individuals who eke out a meager subsistence while avoiding others of their species. But when food sources become abundant, such as after a rain, they transform into ravening packs of billions of insects that can strip a landscape bare.
Scientists Discover Why Locusts Swarm
Los Angeles Times - Top News, Los Angeles Times
Sat, 01/31/2009 - 1:00am
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