Invasion

Invasion Description

1st record: WA/Willapa Bay (1955, Carlton 1979, on Crassostrea gigas shell)

Geographic Extent

La Push, Olympic National Estuarine Research Reserve/WA/Pacific Ocean (47.9116333333333N; 124.636383333333W, 1 specimen, de Rivera et al. 2005); Astoria/OR/Youngs River-Youngs Bay (Carlton 1979; Wonham et al. 2005 'on crayfish Pacificastacus trowbridgei); Astoria/OR/West Mooring Basin, Columbia River (2002, Sytsma et al., 2005); OR/Youngs River Mouth (2002, Sytsma et al., 2005); OR/Coos Bay (1970, Carlton 1979; Wonham et al. 2005); Sengstocken Arm N/OR/South Slough (43.30135N; 124.315833333333W, de Rivera et al. 2005); Empire Boat Ramp/OR/South Slough (43.3933166666667N; 124.280616666667W, de Rivera et al. 2005); Charleston Boat Basin/OR/South Slough (43.3464166666667N; 124.327W, de Rivera et al. 2005); Winchester YSI/OR/South Slough (43.3173833333333N; 124.321733333333, de Rivera et al. 2005); Port of Coos Bay Citrus Dock/OR/South Slough; Valino Is/Crown Pt/OR/South Slough (de Rivera et al. 2005); Cape Blanco/OR/Pacific Ocean (Carlton 1979); CA/Humboldt Bay (2003, Ruiz et al., unpublished data)