Invasion
Invasion Description
1st Record: Belmont oyster beds/CA/South San Francisco Bay (Townsend 1890, cited by Carlton 1979)
Geographic Extent
Belmont oyster beds/CA/South San Francisco Bay (Townsend 1890, cited by Carlton 1979); CA/South San Francisco Bay ('only from the South Bay' Carriker 1955; Hopkins 1986, cited by Cohen and Carlton 1995); Coast Guard Island, Alameda/CA/San Francisco Bay (2004, Cohen et al. 2005); Brisbane/CA/Brisbane Lagoon, South San Francisco Bay (2004, Cohen et al. 2005); San Leandro Marina/CA/ South San Francisco Bay (2004, Cohen et al. 2005); Coyote Point Marina/CA/South San Francisco Bay (2004, Cohen et al. 2005); Dumbarton bridge Pylon/CA/South San Francisco Bay (2004, Cohen and Chapman 2005); Oakland yacht Club/CA/San Francisco Bay (205, Ruiz and Geller 2018)
Vectors
| Level | Vector |
|---|---|
| Probable | Oyster Accidental |
Regional Impacts
| Ecological Impact | Predation | |
| In San Francisco Bay, U. cinerea feeds largely on the barnacle Balanus glandula and the exotic clam Corbula amurensis (Cohen 2005). | ||