Invasion
Invasion Description
1st Record: CA/Sacramento-San Joaquin Delta (1966, Hazel and Kelly 1966, cited by Cohen and Carlton 1995)
1st Watershed Record: Near Pasadena/CA/South San Francisco Bay drainage (1924, Cohen and Carlton 1995, widespread in the Sacramento-San Joaquin valley by 1959, Riegel 1959)
Geographic Extent
CA/Sacramento-San Joaquin Delta (1966, Hazel and Kelly 1966, cited by Cohen and Carlton 1995); Shell Marsh east of Martinez/CA (1995, Cohen and Carlton 1995); Alameda/CA/Coyote Hills Marsh (Cohen and Carlton 1995)
Vectors
| Level | Vector |
|---|---|
| Alternate | Fisheries Accidental (not Oyster) |
| Alternate | Fisheries Intentional |
| Alternate | Pet Release |
| Alternate | Scientific Escape |
Regional Impacts
| Economic Impact | Fisheries | |
| Procambarus clarkii is reported to support commerical fisheries in the Delta, but may largely be taken incidentally for food and bait (Cohen and Carlton 1995). | ||
| Economic Impact | Industry | |
| Agriculture- Procambarus clarkii damages dikes and levees in rice fields (Riegel 1959; Cohen and Carlton 1995). | ||
| Economic Impact | Shipping/Boating | |
| Burrowing by Procambarus clarkii is destructive to riverbanks, dikes and levees (Cohen and Carlton 1995). | ||
| Ecological Impact | Herbivory | |
| In Coyote Hills Marsh, Alameda, Procambarus clarkii reduced the abundance of Sago Pondweed (Stukenia pectinata) (Feminella and Resh 1989, cited by Cohen and Carlton 1995). | ||
| Ecological Impact | Habitat Change | |
| In Coyote Hills Marsh, Alameda, Procambarus clarkii reduced the abundance of Sago Pondweed (Stukenia pectinata), reducing habitat for attached organisms and cover for prey species (Feminella and Resh 1989, cited by Cohen and Carlton 1995). | ||