Invasion
Invasion Description
1st Record: Oakland/CA/San Francisco Bay (1977, Marelli 1981; Cohen and Carlton 1985)
Geographic Extent
Oakland/CA/San Francisco Bay (1977, Marelli 1981; Cohen and Carlton 1995); Sierra Point Marina/CA/South San Francisco Bay (2004, Cohen et al. 2005); Coast Guard Island, Oakland/CA/Oakland Estuary (2004, Cohen et al. 2005); Richmond Marina/CA/San Francisco Bay (2004, Cohen et al. 2005); Pete's Harbor/CA/South San Francisco Bay (2004, Cohen et al. 2005); Brisbane/CA/Brisbane Lagoon, South San Francisco Bay (2004, Cohen et al. 2005); Presidio Yacht Club/CA/Golden Gate (2004, Cohen et al. 2005); Coyote Point Marina/CA/San Francisco Bay (2004, Cohen et al. 2005); CA/South San Francisco Bay (2012-2013, mostly fouling communities, rare in infauna, Jimenez et al. 2017)
Vectors
| Level | Vector |
|---|---|
| Alternate | Ballast Water |
| Alternate | Hull Fouling |
| Alternate | Oyster Accidental |
Regional Impacts
| Ecological Impact | Competition | |
| Caprella mutica was less tolerant of low salinity (LC50 of 17-21 PSU) than C. californica (LC50 of 16 PSU), and died out more quickly after low-salinity events in San Francisco Bay, but recolonized more rapidly due to faster maturity and higher fecundity (Desmet 2011). | ||