Invasion
Invasion Description
1st Record: CA/San Pablo Bay (1943, Miller 1968, cited by Carlton 1979)
Geographic Extent
Chipps Island/CA/Sacramento-San Joaquin Delta (1976, Siegfried et al. 1980); cargo ship 'Florikan'/CA/Suisun Bay (Llanso et al. 2011); Pier 39, San Francisco/CA/San Francisco Bay (2004, Cohen et al. 2005); CA/San Pablo Bay (1943, Miller 1968, cited by Carlton 1979); Rodeo Marina/CA/San Pablo Bay (2004, Cohen et al. 2005); Napa Valley Marina/CA/Napa River 2004, Cohen et al. 2005); Marin County/CA/Corte Madera Creek (1965, Carlton 1979, in stomach of Prickly Sculpin, Cottus asper); Richmond Marina/CA/San Francisco Bay (2004, Cohen et al. 2005); Petaluma/CA/Turning Basin, Petaluma River (2004, Cohen et al. 2005); Marin County/CA/Corte Madera Creek (1965, Carlton 1979); Richmond Marina/CA/San Francisco Bay (2004, Cohen et al. 2005); Berkeley/CA/Berkeley Yacht Harbor (1969, CAS-IZ 117547.00, California Academy of Sciences 2015, 37.868328, -122.3155); Pete's Harbor/CA/South San Francisco Bay (2004, Cohen et al. 2005); San Francisco/CA/Islais Creek (1972, CAS-IZ 146634.00, California Academy of Sciences 2015, 37°45'N, 122°21'W ); Coyote Point Marina/CA/South San Francisco Bay (2004, Cohen et al. 2005); Alameda County/CA/S of mouth of Coyote Hills Slough, wood structure,"Oyster rack' (1977, CAS-IZ 3487.00, California Academy of Sciences 2015); East Palo Alto, San Mateo County/CA/mouth of Ravenswood Slough (1977, CAS-IZ 3489.00, California Academy of Sciences 2015)
Vectors
| Level | Vector |
|---|---|
| Alternate | Ballast Water |
| Alternate | Hull Fouling |
| Alternate | Oyster Accidental |
Regional Impacts
| Ecological Impact | Food/Prey | |
| At some times and locations, in the Sacramento-San Joaquin Delta, they comprised up to 50% of the diet of the introduced Mississippi Silverside (Menidia audens), and 25% of the diet of the introduced Yellowfin Goby (Acanthogobius flavimanus) (Howe and Simenstad 2007; Cohen and Bollens 2008). | ||