Researchers Study Invasive Mussels Near Apostle Islands On Lake Superior

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Researchers Study Invasive Mussels

Invasive zebra and quagga mussels were discovered for the first time in recent years around the Apostle Islands National Lakeshore on Lake Superior. National Park Service officials are working with researchers to find out how the aquatic hitch hikers got there.

Zebra mussels were first found in the Duluth-Superior harbor in 1989 while quagga mussels arrived in the ballast water of ships in 2005. The aquatic invaders tend to crowd out native freshwater mussels.

Julie Van Stappen with the Apostle Islands Nationahl Lakesore said divers discovered zebra mussels in 2015 and 2016 on the Sevona shipwreck near Sand Island.

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