Invasion
Invasion Description
None
Geographic Extent
Duluth/MN/St. Louis River (Lake Superior) (Meehean 1929, cited by Brehm 1978); Ontario/Geogrian Bay, Lake Huron (1991-2009, Schloesser 2012)
Vectors
| Level | Vector |
|---|---|
| Alternate | Ballast Water |
| Alternate | Fisheries Accidental (not Oyster) |