Freshwater Mussels Pacific Northwest - The Xerces Society
Freshwater Mussels Pacific Northwest - The Xerces Society
Freshwater Mussels Pacific Northwest - The Xerces Society
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42<br />
Zebra mussels<br />
photo: U.S. Geological Survey<br />
Humans are the main vectors for spreading zebra and quagga mussels.<br />
Adults and juvenile mussels attach to boat hulls or to vegetation that gets<br />
entwined in boat propellers or trailers. Boats transported from infected waterbodies<br />
spread the mussels into new waters if the boats and trailers are not<br />
properly cleaned. Bilge water, live wells, and bait buckets are other means of<br />
introduction. Dreissena had not been found west of the Continental Divide<br />
until January 2007 when it was discovered in Lake Mead, and currently (May<br />
2009), zebra and quagga mussels have been found in 33 waterbodies in Nevada,<br />
Arizona, California, Colorado, and Utah.<br />
<strong>Freshwater</strong> <strong>Mussels</strong> of the <strong>Pacific</strong> <strong>Northwest</strong>