Invasion of quagga mussels

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Unfortunately, they are already in places like the Great Lakes, and they have moved west from there.

Here are a couple of articles that talk about Quagga and zebra mussels and their advance into the Colorado River system (Lake Powell).

[url "http://www.utahfishinginfo.com/news/2007/3-29_quagga_mussels.php"]http://www.utahfishinginfo.com/news/2007/3-29_quagga_mussels.php[/url]

[url "http://www.utahfishinginfo.com/news/2007/8-9_quagga_zebra_mussels_lake_powell.php"]http://www.utahfishinginfo.com/news/2007/8-9_quagga_zebra_mussels_lake_powell.php[/url]
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