Invasion
Invasion Description
1st Record: Los Angeles-Long Beach/CA/Los Angeles-Long Beach Harbors (as J. fancata, Barnard 1958)
Geographic Extent
Long Beach Yacht Club/CA/Alamitos Bay (2000, Cohen et al. 2002); Pilots' Dock, Pier F, Long Beach/CA/Long Beach Harbor (2000, Cohen et al. 2002); CA/Long Beach Harbor (2001, Fairey et al. 2002); Newmark's Yacht Harbor , Los Angeles/CA/Los Angeles Harbor (2000, Cohen et al. 2002); Los Angeles-Long Beach/CA/Los Angeles-Long Beach Harbors (as J. fancata, Barnard 1958)
Vectors
| Level | Vector |
|---|---|
| Alternate | Hull Fouling |
| Alternate | Ballast Water |
Regional Impacts
| Economic Impact | Shipping/Boating | |
| Jassa marmorata fouls pilings in Los Angeles-Long Beach Harbor, covering them with masses of tubes covered with sediment, but perhaps provides a benefit by discouraging boring organisms (Barnard 1950). | ||
| Ecological Impact | Habitat Change | |
| Dense masses of amphipod tubes may discourage settlement by boring organisms and other foulers, such as the tunicate Ciona intestinalis (Barnard 1950). They also may provide habitat for other organisms, such as predatory polychaetes (Barnard 1950). | ||