Invasion

Invasion Description

1st record: CA/Tomales Bay (1941, Pitelka and Paulson 1942, cited by Carlton 1979)

Geographic Extent

Bodega Bay/CA/Bodega Harbor (1971, Carlton 1979); CA/Tomales Bay (1941, Pitelka and Paulson 1942, cited by Carlton 1979; Fairey et al. 2002; 2011, California Department of Fish and Wildlife 2014); CA/Bolinas Lagoon (Smith 1944, cited by Carlton 1979); CA/San Francisco Bay (1946, Smith 1947, cited by Carlton 1979); CA/South San Francisco Bay (Nichols and Thompson 1985); CA/San Pablo Bay (Nichols and Thompson 1985); China Camp/CA/San Pablo Bay (2005, Robinson et al. 2011); CA/Honker Bay (Nichols and Thompson 1985; Hopkins 1986); Sierra Point Marina/CA/South San Francisco Bay (2004, Cohen et al. 2005); Coast Guard Island, Oakland/CA/San Francisco Bay (2004, Cohen et al. 2005); Coyote Point/CA/South San Francisco Bay (2004, Cohen et al. 2005); Rodeo Marina/CA/San Pablo Bay (2004, Cohen et al. 2005); CA/San Pablo Bay (Peterson et al. 2010, present in dry years); CA/Grizzly Bay (CA/Coyote Creek, South San Francisco Bay (Hopkins 1986; Peterson and Vayssieres 2010, present in dry years); Brisbane/CA/South San Francisco Bay (2004, Cohen et al. 2005); Fruitvale Bridge, Oakland/CA/Oakland Estuary; San Leandro Marina//CA/San Francisco Bay (2010, Marrafini et al. 2017); CA/South Francisco Bay (2012-2013, Jimenez et al. 2017, mostly soft substrates)CA/Elkhorn Slough (1965, MacDonald 1969, cited by Carlton 1979; locally extinct, Wasson et al. 2001)