LOCUST SWARM PHOTOS: Plagues Triggered by Serotonin?

LOCUST SWARM PHOTOS: Plagues Triggered by Serotonin?
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Locusts swarm Merida, Mexico, in 2004.

A January 2009 study found that spikes in the neurotransmitter serotonin may be induce desert locusts—common to arid regions of North Africa and the Middle East—to swarm.

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—Photograph by Jose Acosta/AP
 
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