All Images Press Release 12-189 Why We Need Insects--Even "Pesky" Ones
Hard evidence of evolution: a five-year study shows that plants may quickly lose important traits through evolution soon after insects are removed from the environment
A large natural population of evening primrose (yellow), which is a common plant in eastern North America.
Agrawal's team set up 16 identical plots. During each growing season for five years, eight of the plots were treated biweekly with an insecticide; the other eight were controls.
Credit: Anurag Agrawal
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Anurag Agawal provides hard evidence of evolution.
Credit: National Science Foundation
The research results are described in the Oct. 5, 2012, issue of the journal Science.
Credit: AAAS copyright 2012
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