Invasion

Invasion Description

1st Record: CA/Elkhorn Slough (Ricketts and Calvin 1938, cited by Carlton 1979)

Geographic Extent

'Vierra's', near Highway 1 Bridge, Moss Landing/CA/Elkhorn Slough (1998, Wasson et al. 2001); South Marsh/CA/Elkhorn Slough (1998, Wasson et al. 2001); Hummingbird Island/CA/Elkhorn Slough (1998, Wasson et al. 2001); Kirby Park/CA/Elkhorn Slough (1998, Wasson et al. 2001); CA/Elkhorn Slough (Ricketts and Calvin 1938, cited by Carlton 1979)