Invasion

Invasion Description

1st Record: near Pittsburg/CA/Suisun Bay; CA/Sacramento-San Joaquin Delta (1992, Modlin and Orsi 1997, as Acanthomysis aspera)

Geographic Extent

CA/Suisun Bay; CA/Sacramento-San Joaquin Estuary (Modlin and Orsi 1997); in a Camp marsh/CA/San Pablo Bay (2002-2003, Dean et al. 2005); CA/San Pablo Bay-Suisum Bay (Fairey et al. 2002); Stockton/CA/Sacramento River (Fairey et al. 2002); Sacramento/CA/Sacramento Turning Basin (Fairey et al. 2002); CA/San Francisco Bay (most abundant at 20-28 PSU, Mecum 2006)