Invasion
Invasion Description
1st Records: Shelter Island, San Diego/CA/San Diego Bay (1994, Lambert and Lambert 2003); Harbor Island, San Diego/CA/San Diego Bay (1994, Lambert and Lambert 2003); Fiddlers Cove, San Diego/CA/San Diego Bay; 24th St, San Diego/CA/San Diego Bay (1994, Lambert and Lambert 2003); J St., San Diego/CA/San Diego Bay (1994, Lambert and Lambert 2003); Sunroad Resort Marina Harbor,
Geographic Extent
Shelter Island, San Diego/CA/San Diego Bay (1994, Lambert and Lambert 2003); Harbor Island, San Diego/CA/San Diego Bay (1994, Lambert and Lambert 2003); Fiddlers Cove, San Diego/CA/San Diego Bay (1995, Lambert and Lambert 2003); 24th St, , San Diego/CA/San Diego Bay (1994, Lambert and Lambert 2003); J St., San Diego/CA/San Diego Bay (1994, Lambert and Lambert 2003); San Diego/CA/San Diego Bay (2001, Fairey et al. 2002; 2011, California Department of Fish and Wildlife 2014); San Diego Bay (2019, Nichols et al. 2023)
Vectors
| Level | Vector |
|---|---|
| Probable | Hull Fouling |
| Alternate | None |
Regional Impacts
| Ecological Impact | Competition | |
| Microcosmus squamiger now greatly outnumbers an earlier invader, Styela canopus in San Diego Bay. It forms single-species patches at some locations, suggestive of competition (Lambert and Lambert 2003). | ||