Species Regional Summary
Jassa marmorata
San Pedro Bay ( P050 )

Invasion History Vectors Impacts References

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 ImpactShipping/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 ImpactHabitat 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).
 

References

Full Reference List for Jassa marmorata

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