Invasion

Invasion Description

1st Record: CA/Sacramento-San Joaquin Delta (1950s, 1953-59 (Cohen and Carlton 1995; Dill and Cordone 1997), 1st Record: Oxnard/CA/lower reaches and mouth of Santa Clara River (1975, Bell 1979)

Geographic Extent

CA/Sacramento-San Joaquin Delta (1950s, 1953-59 (Cohen and Carlton 1995; Dill and Cordone 1997; Feyrer and Healy 2003); CA/Suisun Marsh (Matern et al. 2002); CA/Sacramento-San Joaquin Delta, deadend sloughs such as Wilson Slough, Coyote Creek, and Sweeney Creek (Wang 1986), Oxnard/CA/lower reaches and mouth of Santa Clara River (1975, Bell 1979)