Invasion
Invasion Description
1st Record: Los Angeles/CA/Los Angeles-Long Beach Harbors (Mendell 1871, cited by Carlton 1979)
Geographic Extent
Los Angeles/CA/Los Angeles-Long Beach Harbors (Mendell 1871, cited by Carlton 1979; 2011, California Department of Fish and Wildlife 2014); Los Angeles/CA/Los Angeles-Long Beach Harbors (1949, Menzies 1957); Impound Marina, Long Beach/CA/Long Beach Harbor (2000, Cohen et al. 2002); Long beach/CA/Alamitos Bay (Reish 1968, cited by Carlton 1979); Anaheim/CA/Anaheim Bay and Huntington Harbor (Reish 1972, cited by Carlton 1979);
Vectors
| Level | Vector |
|---|---|
| Probable | Hull Fouling |
Regional Impacts
| Economic Impact | Shipping/Boating | |
| 'In Los Angeles, California, this species can reduce the life of a creosote treated piling to about 6 years instead of a possible 40 years in northern waters (Beckman et al. 1957).' (Quayle 1992). | ||