Invasion

Invasion Description

1st Record: Astoria/OR/Youngs Bay (1975-1979, Banse 1979)

Geographic Extent

Astoria/OR/Youngs Bay (1975-1979, Banse 1979); Astoria Yacht Club/OR/Columbia River  (4/17/2002, 7/8/2002; Samples: 53-ES-02, 16-ES-02, Dates: April 17, 2002, July 8, 2002, 46.1705, -123.8363, Temperature: 9 C, 20 C Salinity: 0.75ppt, 6ppt. Sytsma et al. 2005); Wallooskea/OR/Youngs River (7/8/2002, Salinity: 4ppt, 46.1449, -123.8138, Sytsma et al. 2005); Ilwaco/WA/Baker Bay, Ilwaco Harbor tideflat (7/9/2002, 8/13/2001; Salinity: 10ppt, Sytsma et al. 2005, 46.3025, -124.0366); Ilwaco/WA/Baker Bay (Jones 1983; Systma et al. 2004, 5-20 PSU); OR/Trestle Bay Jetty (4/17/2002, 46.2227, -124.0023, Sytsma et al. 2005); WA/Mid-Lewis and Clark River (10/2/2002, Temperature: 16, Salinity: 5ppt, 46.1176, -123.8611, Sytsma et al. 2005)