Thursday, February 9, 2012

Zebra stripes evolved to keep biting flies at bay - Victoria Gill - BBC Nature

," she explained. Unpolarised light waves travel along any and every plane, and are much less attractive to flies. As a result, white-coated horses are much less troubled by horseflies than their dark-coloured relatives.

Having discovered the flies' preference for dark coats, the team then became interested in zebras. They wanted to know what kind of light would bounce off the striped body of a zebra, and how this would affect the biting flies that are a horse's most irritating enemy.

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TAGGED: BIOLOGY, EVOLUTION, SCIENCE

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