Invasion
Invasion Description
1st Record: San Diego/CA/Mission Bay (Farmer 1964, cited by Carlton 1979)
Geographic Extent
San Diego/CA/Quivera Basin, Mission Bay (1994, 1995, 1996, 1997, 1998, 2000, Lambert and Lambert 2003); Dana Landing, San Diego/CA/Mission Bay (1998, Lambert and Lambert 2003); South Shores boat Ramp, San Diego/CA/Mission Bay (1997, Lambert and Lambert 2003; 2012, Tracy and Reyns 2014); Bahia Point, San Diego/CA/Mission Bay (1996; 1997; 1998, Lambert and Lambert 2003); Mission Bay Yacht Club, San Diego/CA/Mission Bay (1997, Lambert and Lambert 2003, 2012, Tracy and Reyns 2014); Seaforth Marina, San Diego/CA/Mission Bay (2003, de Rivera et al. 2005a; Tracy and Reyns 2014); Dana Point Marina, San Diego/CA/Mission Bay (2003, deRivera et al. 2005); San Diego/CA/Mission Bay (2001, Fairey et al. 2002);
Vectors
| Level | Vector |
|---|---|
| Probable | Hull Fouling |
Regional Impacts
| Ecological Impact | Competition | |
| Ciona robusta formed large monospecific patches in Mission 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). | ||