Invasion

Invasion Description

1st Record: Lower Mandeville Tip, Upper Mandeville Tip, Venice Cut/CA/Sacramento-San Joaquin Delta (4/1998, Toft et al. 2002)

Geographic Extent

Lower Mandeville Tip, Upper Mandeville Tip, Venice Cut/CA/Sacramento-San Joaquin Delta (4/1998, Toft et al. 2002); Mildred Island, Sherman Island, Sand Mound Slough/CA/Sacramento-San Joaquin Delta (6/1998, Toft et al. 2002); Donlon Island/CA/Sacramento-San Joaquin Delta (5/1999, Toft et al. 2002); Merded County/CA/Merced River dredge tailing ponds (nontidal, Graening and Robers 2013)