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Straying Far From Home, Invasive Crayfish Threatens U.S. Waterways

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Published on Mar 10, 2011

Read the transcript: http://to.pbs.org/gIrXCA
Vince Patton of "Oregon Field Guide" reports on the threat posed to waterways by the eastern crayfish, a species native to the Ohio River that can now be found in 18 states and two Canadian provinces. "Oregon Field Guide" is a production of Oregon Public Broadcasting.

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