Invasion

Invasion Description

1st Record: New Hope Landing/CA/Mokelumne River, Sacramento-San Joaquin Delta (1963, Hazel 1966, Cohen and Carlton 1995)

Geographic Extent

New Hope Landing/CA/Mokelumne River, Sacramento-San Joaquin Delta (Hazel 1966, Cohen and Carlton 1995); Frank's Tract/CA/Sacramento-San Joaquin Delta (Cohen and Carlton 1995); Rio Vista /CA/Sacramento-San Joaquin Delta (Cohen and Carlton 1995); CA/Old River, San Joaquin River (1977-2003, Peterson and Vayssieres 2010, common to highly abundan)