Invasion

Invasion Description

1st Record: Vallejo/CA/Dutchman Slough, Napa River (1966, Chapman and Dorman 1975)

Geographic Extent

Antioch/CA/Sacramento-San Joaquin Delta (1976, Siegfried et al. 1980; Cohen and Carlton 1995); CA/Lower Sacramento River (1997-2003, Peterson and Vayssieres 2010);); CA/Grizzly Bay (1997-2003, Peterson and Vayssieres 2010); Cargo ship 'Florikan'/CA/Suisun Bay (Llanso et al. 2011); Contra Costa County/CA/Carquinez Straits (1971, Chapman and Dorman 1975); China Camp/CA/San Pablo Bay (2005, Robinson et al. 2011); Vallejo/CA/Dutchman Slough, Napa River (1966, Chapman and Dorman 1975); Pinole Point,Costra Costa County/CA/San Pablo Bay; Solano County/CA/Dutchman Slough; (1966, Chapman and Dorman 1975) Tubbs Island, Sonoma County/CA/San Pablo Bay (1972, Chapman and Dorman 1975); San Quentin, Marin County/CA/central San Francisco Bay (1971, Chapman and Dorman 1975); Tiburon, Marin County/CA/central San Francisco Bay (1971, Chapman and Dorman 1975); Sausalito, Marin County/CA/central San Francisco Bay (1971, Chapman and Dorman 1975); Aquatic Park, Berkeley/CA/central San Francisco Bay (1967, Chapman and Dorman 1975); Oakland/CA/Lake Merritt (1970, Chapman and Dorman 1975); Burlingame, San Mateo County/CA/South San Francisco Bay (1972, Chapman and Dorman 1975); Redwood City, San Mateo County/CA/South San Francisco Bay (1972, Chapman and Dorman 1975); CA/South Francisco Bay (2012-2013, Jimenez et al. 2017, common on hard and soft substrates)