Invasion
Invasion Description
1st Record: Sarnia/Ontario/Lake Huron (Dermott et al. 1998)
Geographic Extent
Sarnia/Ontario/Lake Huron (Dermott et al. 1998); Port Austin/MI/Lake Huron (2004, Kang et al. 2007); off St. Joseph/MI//Lake Michigan (1998, Nalepa et al. 2001); Michigan City/MI/Lake Michigan (1999, Nalepa et al. 2001); USGS Nonindigenous Aquatic Species Program 2008); Michigan City, St. Joseph, Muskegon, Ludington, Frankfort, and Charlevoix/MI-WI/Lake Michigan (1999, Nalepa et al. 2001); Escanaba/MI/Green Bay (2004, Kang et al. 2007);Thunder Bay/Ontario/Lake Superior (2001, Grigorevich et al. 2003, population status unknown); Duluth/MN/Duluth-Superior Harbor, Lake Superior (2005, Trebitz et al. 2012)
Vectors
Level | Vector |
---|---|
Alternate | Ballast Water |
Alternate | Natural Dispersal |
Probable | Canal |