2017-04-03. What Makes a City Ant? Maybe Just 100 Years of Evolution.

posted Apr 4, 2017, 8:44 AM by Alan Gould
By Steph Yin, The New York Times. For GSS Losing Biodiversity chapter 3. Excerpt: It can often take millenniums for organisms to evolve. But for crumb-size acorn ants in Cleveland, a single human life span may have been enough for them to become adapted to city living. In a recent study published in The Biological Journal of the Linnean Society, scientists found that city acorn ants were more tolerant of heat, and less tolerant of cold, than their rural counterparts. Because Cleveland became significantly urbanized only in the last century, this adaptation would have arisen in no more than 100 years, or 20 acorn ant generations, said Sarah Diamond, an assistant professor of biology at Case Western Reserve University and an author of the study....  https://www.nytimes.com/2017/04/03/science/acorn-ants-evolution-cleveland.html 0