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Evolution: Blink and you'll miss it

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  • Chris Ashcraft
    http://www.newscientist.com/channel/life/mg18725071.100 Evolution: Blink and you ll miss it 09 July 2005 Bob Holmes New Scientist - Magazine issue 2507 If you
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      http://www.newscientist.com/channel/life/mg18725071.100

      Evolution: Blink and you'll miss it
      09 July 2005 Bob Holmes
      New Scientist - Magazine issue 2507

      If you thought evolution was slow and gradual, think again. Humans may even be helping it along,
      as our activities force species to adapt or die
      EVERY weekend angler knows to throw back the tiddlers. Likewise, commercial fishermen use
      large-meshed nets to spare smaller fish. Both are working on the principle that by reducing their
      haul this way, they can keep fish populations vigorous and healthy. But they could be making a
      terrible mistake. It is becoming increasingly clear that such well-meaning strategies may actually
      have the opposite effect to what the fishermen intend.

      What they and most of the rest of us have overlooked is evolution - not the familiar glacier-slow
      process found in textbooks, which takes millennia to work its wonders, but a burbling freshet of
      evolutionary change that can occur in a matter of years or decades. By leaving the smaller fish,
      fishermen may be shifting the evolutionary goalposts, reshaping fish species as they go. In fact,
      biologists are starting to suspect that this phenomenon, which they have dubbed contemporary
      evolution, is happening ...

      The complete article is 2580 words long.

      Christopher W. Ashcraft
      Northwest Creation Network
      http://nwcreation.net
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