Invasion
Invasion Description
1st Record: Antioch/CA/San Joaquin River (1930, Hand and Gwilliam 1951; Carlton 1979)
Geographic Extent
Antioch/CA/San Joaquin River (1930, Hand and Gwilliam 1951; Carlton 1979); CA/San Joaquin-Sacramento Delta (Hazel and Kelley 1966, cited by Carlton 1979; Siegfried et al. 1980); San Francisco/CA/Lake Merced (Fraser 1948; Hand and Gwilliam 1951; Carlton 1979); CA/Delta-Mendota Canal; Contra Costa County/CA/San Pablo Reservoir (Hand and Gwillian 1951; Carlton 1979; Cohen and Carlton 1995); Sonoma County/CA/Salmon Creek (1975, Carlton 1979); Petaluma Turning Basin/CA/Petaluma River (2004, Cohen et al. 2005); CA/Boynton Slough (2007-2008, Wintzer et al. 2011); CA/Montezuma Slough (2007-2008, Wintzer et al. 2011); CA/Suisun Slough (Wintzer et al. 2011); cargo ship 'Florikan'/CA/Suisun Bay (Llanso et al. 2011); San Leandro Marina//CA/San Francisco Bay (2010, Marrafini et al. 2017) north side of bridge over old Salinas River channel, just south of Moss Landing/CA/Elkhorn Slough system (1998, Wasson et al. 1999)
Vectors
| Level | Vector |
|---|---|
| Alternate | Hull Fouling |
| Alternate | Oyster Accidental |
| Alternate | Aquatic Plant Shipments |
Regional Impacts
| Ecological Impact | Food/Prey | |
| In the San Francisco Bay estuary, C. caspia comprised 18-23% of the diet of the introduced Shimofuri goby (Tridentiger bifasciatus) (Matern and Brown 2005). | ||