
This story comes from my co-teacher, Mr. Wolsko:
Scientists at Cambridge University have discovered that serotonin, a chemical that affects people’s moods also can transform easygoing desert locusts into terrifying swarms that ravage the countryside, in many parts of the world.
Locusts, a member of the grasshopper family live an interesting life. Sometimes they live solitary lives. Other times, they can be found in swarms of billions.
In her 1937 novel On the Banks of Plum Creek, Laura Ingalls Wilder wrote of a “glittering cloud” of locusts so large it blocked out the sun as it approached. The swarm descended upon her family’s farm near Walnut Grove, Minnesota, destroying a year’s wheat crop and stripping the prairie bare of all vegetation.
Though no longer a problem in the United States, Locusts still plague many parts of Africa, Asia, and Australia.
Dr Swidbert Ott, one of the co-authors of the article, said:”Serotonin profoundly influences how we humans behave and interact, so to find that the same chemical in the brain is what causes a normally shy antisocial insect to gang up in huge groups is amazing.”
People throughout the world once used dangerous pesticides, like DDT, to combat the threat of locusts. Based on this new discovery, people could instead spray a compound on the gathering locusts that blocks their serotonin receptors and thus prevents them from swarming.
Source:
http://www.admin.cam.ac.uk/news/dp/2009013001
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