Invasion
Invasion Description
1st record: Seattle/WA/Lake Union (1920, Hand and Gwillian 1951; Carlton 1979)
Geographic Extent
Government Dock, Port Alberni/British Columbia (Lu et al. 2007, 49 14 12.8 N; 124 48 56W); Victoria/British Columbia/Albert Head Lagoon (1969, Mace and Mackie 1970); Seattle/WA/Lake Union (1920, Hand and Gwillian 1951; Carlton 1979); Edison/WA/Samish River (1998, Cohen et al. 1998); Turning Basin, Duwamish River 12:40-1:20 pm, 18 May 2000, 47° 30' 38.590' N; 122° 18' 11.484' W, Salinity 2 psu, Water temperature 15°C (Cohen et al. 2001)
Vectors
| Level | Vector |
|---|---|
| Probable | Hull Fouling |
| Alternate | Oyster Accidental |
| Alternate | Aquatic Plant Shipments |
| Alternate | Fisheries Accidental (not Oyster) |