Invasion
Invasion Description
1st record: CA/Los Angeles-Long Beach Harbor (1950, Barnard 1958)
Geographic Extent
Oxnard/CA/Channel Islands Harbor (2011, California Department of Fish and Wildlife 2014); Oxnard/CA/Port Hueneme (2001, Fairey et al. 2002; 2011, California Department of Fish and Wildlife 2014); Venice/CA/Playa del Rey Lagoon, Santa Monica Bay (1953, Woodwick 1953, cited by Carlton 1979); Venice/CA/Marina del Rey (2011, California Department of Fish and Wildlife 2014; Venice/CA/Bellona Creek, Santa Monica Bay (1956, Allan Hancock Foundation, cited by Carlton 1979); CA/Los Angeles-Long beach Harbor (1950, Barnard 1958, through most of the harbor system; 2011, California Department of Fish and Wildlife 2014); Huntington Beach/CA/Huntington Harbor (2011, California Department of Fish and Wildlife 2014); CA/Newport Bay (Barnard 1951, cited by Carlton 1979; 2011, California Department of Fish and Wildlife 2014); Snug Harbor Marina, Carlsbad/CA/Agua Hedionda Lagoon (2000, Cohen et al. 2001), San Diego/CA/San Dieguito Lagoon (2000, Cohen et al. 2001); San Diego/CA/Mission Bay (2011, California Department of Fish and Wildlife 2014)
Vectors
| Level | Vector |
|---|---|
| Alternate | Ballast Water |
| Alternate | Hull Fouling |
Regional Impacts
| Economic Impact | Shipping/Boating | |
| Fouling pilings, covering them with masses of tubes covered with sediment, but perhaps a benefit by discourage boring organisms. However, M. insidiosum's abundance was about 10% of M. acherusicum's (Barnard 1958). | ||
| Ecological Impact | Habitat Change | |
| Fouling pilings, covering them with masses of tubes covered with sediment, but perhaps a benefit by discourage boring organisms. However, M. insidiosum's abundance was about 10% of M. acherusicum's (Barnard 1958). | ||