Invasion
Invasion Description
Assumed to have invaded at about the same time as the 1st record in Central San Francisco Bay.
Geographic Extent
CA/San Pablo Bay (1942, Chapman 1988, from buoy); Napa Valley Fishing Resort, Vallejo/CA/Napa River (1976, Chapman 1988);
Vectors
Level | Vector |
---|---|
Alternate | Ballast Water |
Alternate | Hull Fouling |