Scientific Name: Dreissena polymorpha
Subcategory: Freshwater mussel (shellfish)
Invasive species type: fish
Native Range: Caspian Sea, Black Sea
Invasive Range: Great Lakes
Time of Invasion: Discovered in 1988
Invasion Pathway: Larvae carried in ballast water, adults attach to boats, diving equipment, etc.
Status: High concern
Impacts: Economic impacts, reduction of phytoplankton, intense competition with native molluscs and the burrowing amphipod, Diporeia hoyi, attach in large colonies to all hard surfaces, including other shellfish
Control Measures: Deceleration & prevention of spread, chlorination at pipe intake regions
