Invasion
Invasion Description
1st Record: CA/Sacramento-San Joaquin Delta (1978, Toft et al. 2002, from preserved samples)
Geographic Extent
CA/Sacramento-San Joaquin Delta (1978, Toft et al. 2002); Upper Mandeveille Tip/CA/Sacramento-San Joaquin Delta (1998, Toft et al. 2002); Venice Cut/CA/Sacramento-San Joaquin Delta (1998, Toft et al. 2002); 1978-2006/CA/Sacramento River-San Joaquin River Delta: Sacramento River, Sherman Lake, Frank’s Tract, Old River, 1978 to 2006, Graening and Rogers 2013, over 300 specimens, collection by ponar grab, 53 sampling events)
Vectors
| Level | Vector |
|---|---|
| Alternate | Ballast Water |
| Alternate | Aquatic Plant Shipments |