Invasion
Invasion Description
CA/Grizzly Bay and Western Sacramento-San Joaquin Delta(1986, Cohen and Carlton 1995)
Geographic Extent
Bodega Bay/CA/Bodega Harbor (2011, California Department of Fish and Wildlife 2014); CA/Tomales Bay (Fairey et al. 2002); CA/Grizzly Bay and Western Sacramento-San Joaquin Delta (1986, Cohen and Carlton 1995; Peterson et al. 2010, abundant in dry years); cargo ship 'Florikan'/CA/Suisun Bay (Llanso et al. 2011); CA/Napa River (Cohen and Carlton 1995); CA/San Pablo Bay (Cohen and Carlton 1995,; CA/South San Francisco Bay (Cohen and Carlton 1995); San Leandro Marina/CA/South San Francisco Bay (2004, Cohen et al. 2005); Rodeo Marina/CA/San Pablo Bay (2004, Cohen et al. 2005); Pier 39, San Francisco/CA/San Francisco Bay (2004, Cohen et al. 2005); Presidio Yacht Club/CA/Golden Gate (2004, Cohen et al. 2005); Petaluma Turning Basin/CA/Petaluma River (2004, Cohen et al. 2005); Port San Pablo Yacht Harbor/CA/San Pablo Bay (2004, Cohen et al. 2005); CA/San Pablo Bay (1987-2003, Peterson et al. 2010, one of 3 dominant organisms); Fresh-Brackish-Muddy Zone (Delta, mean salinity 0.7 PSU) to Marine Muddy Zone (South and Central Bays, mean salinity 27.5 PSU), highest abundance in Estuarine-Margin Zone, San Pablo Bay, mean salinity 22.8)
Vectors
| Level | Vector |
|---|---|
| Alternate | Ballast Water |
| Alternate | Oyster Accidental |
Regional Impacts
| Ecological Impact | Food/Prey | |
| Nippoleucon hinumensis is one of the dominant foods of the introduced Mississippi Silverside (Menidia audens), an important forage fish in Delta marshes. This cumacean was the most important prey numerically and in terms of nitrogen intake. It was eaten in lesser quantities by the Yellowfin Goby (Acanthogobius flavimanus) and Western Mosquitofish (Gambusia affinis) (Howe et al. 2014). | ||