Invasion
Invasion Description
1st Record: CA/San Diego Bay (Wheeler 1897, cited by Carlton 1979);
Geographic Extent
CA/San Diego Bay (Wheeler 1897, cited by Carlton 1979); Coronado Beach, San Diego/CA/San Diego Bay (Morgan 1905, cited by Carlton 1979); Shelter Island, San Diego/CA/San Diego Bay (1995, 1996, 1997, 1998, 2000, Lambert and Lambert 2003); Harbor Island, San Diego/CA/San Diego Bay (1994, 1995, 1997, 1998, Lambert and Lambert 2003); Fiddlers Cove, San Diego/CA/San Diego Bay (1995, 1997, 1998, 2000, Lambert and Lambert 2003); J St, San Diego/CA/San Diego Bay (1995, 1996, 1998, 2000, Lambert and Lambert 2003); Sunroad Marina, San Diego/CA/San Diego Bay (2003, deRivera et al. 2005); San Diego/CA/San Diego Bay (2001, Fairey et al. 2002)
Vectors
| Level | Vector |
|---|
Regional Impacts
| Ecological Impact | Competition | |
| Ciona robusta formed large monospecific patches in San Diego Bay, indicating strong competition (Lambert and Lambert 2003). It and other introduced ascidians have replaced the native species Pyura haustor and Ascidia ceratodes in southern California harbors (Lambert and Lambert 1998). | ||