Invasion
Invasion Description
Island Packers, Ventura/CA/Ventura Harbor ((1996, 1997, 1998) Lambert and Lambert 1998; Lambert and Lambert 2003); Pierpoint Yacht Club, Ventura/CA/Ventura Harbor (1996, 1997, 1998); Lambert and Lambert 1998; Lambert and Lambert 2003)
Geographic Extent
Island Packers, Ventura/CA/Ventura Harbor ((1996, 1997, 1998) Lambert and Lambert 1998; Lambert and Lambert 2003); Pierpoint Yacht Club, Ventura/CA/Ventura Harbor (1996, 1997, 1998); Lambert and Lambert 1998; Lambert and Lambert 2003)
Vectors
| Level | Vector |
|---|---|
| Probable | None |
Regional Impacts
| Ecological Impact | Competition | |
| Ascidia zara has largely replaced the native Ascidia ceratodes in San Diego Bay (Lambert and Lambert 2003;). Ritter & Forsyth (1917) reported that Ascidia ceratodes and Pyura haustor, both native, were the most numerous solitary ascidians in South California in 1917. In 1995-2000, A. ceratodes was rare having been replaced by A. zara. | ||