Invasion
Invasion Description
1st Record: CA/Los Angeles-Long Beach Harbors (1998, Ransinghe et al. 2005, established)
Geographic Extent
CA/Los Angeles-Long Beach Harbors (1998, Ransinghe et al. 2005, established); Long Beach/CA/Colorado Lagoon (2004, Burnaford et al. 2011, now dominant, replacing Mercenaria mercenaria)
Vectors
| Level | Vector |
|---|---|
| Alternate | Ballast Water |
| Alternate | Fisheries Intentional |
| Alternate | Fisheries Accidental (not Oyster) |
Regional Impacts
| Ecological Impact | Competition | |
| In Colorado Lagoon, Long Beach CA, Ruditapes philippinarum became the biomass dominant in the benthic community by 2004, as the previous dominant, the introduced Hard Clam, Mercenaria mercenaria, disappeared. Competition is possible, but when R. philippinarum appeared, M. mercenaria had already become rare (Burnaford et al. 2011). | ||