Invasion

Invasion Description

1st Record: 2.8 km off Grand Haven/MI/Lake Michigan (1966, Wells 1970)

Geographic Extent

EPA Station SU06, off Pukawaska National Park/Ontario/Lake Superior (1999; , USGS Nonindigenous Aquatic Species Program 2013); Off Duluth Harbor/MN/Lake Superior (2001, USGS Nonindigenous Aquatic Species Program 2013); WI/Green Bay, Lake Michigan (1994, USGS Nonidigenous Species Database 2013); 12.8 km off Grand Haven/MI/Lake Michigan (1966, Wells 1970); Lake Huron (1967, Mills et al. 1993); off Presque Isle/MI/Lake Huron, (1998, USGS Nonindigenous Aquatic Species Program 2013); Ontarioi/Georgian Bay, Lake Huron (Kotov et al. 2010, 45° -81.2499°)