Invasion

Invasion Description

1st Record: (1960, Whitworth et al. 1968; Marcy 1976; Hartel 1996; Whitworth 1996), 1st Reocord: MA/Charles River (1949, Hartel 1996)

Geographic Extent

Connecticut River (1960, Whitworth et al. 1968; Marcy 1976; Hartel 1996; Whitworth 1996; Jacobs et al. 2004); Norwich/CT/Thames River estuary (1973, Whitworth and Marsh, in Jacobson 1980)., MA/Charles River (1949, Hartel 1996), NY/Hudson River (Lee et al. 1980; Page and Burr 1991), NJ-PA-DE/Delaware River estuary, MD-DE-VA/Chesapeake Bay and tributaries