Big Don shares science news;
LATimes | 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.I woke up this morning to find a message in my inbox from BD titled "serotonin hegemony". While the political implications of the animal model in question give pause - evoking as they do a serotonin re-uptake inhibited rave, the summer of love, godless communism, and biblical plagues - I have to give him props for the ergodic sweep of his gesture.
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.
The key to the transformation, researchers said Friday, is the brain chemical serotonin, the chemical that in humans modulates anger, aggression, mood, appetite, sexuality and a host of other behaviors.
The locusts swarm when contact with one another triples their serotonin levels, British and Australian researchers reported in the journal Science.
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