Invasion
Invasion Description
1st Record: WA/Willapa Bay (1990s, Cohen et al. 2002)
Geographic Extent
WA/Willapa Bay (1990s, Cohen et al. 2001, '...the Japanese fouling mussel Musculista senhousia was transported into Willapa Bay with shipments of Manila clams in the 1990s, but did not become established in the bay'); CA/Humboldt Bay (Fairey 2002, Reported 'rare'; not found by Boyd et al. (2002), Both surveys sampled in 2000-2001; )
Vectors
| Level | Vector |
|---|---|
| Alternate | Oyster Accidental |
| Alternate | Hull Fouling |
| Alternate | Ballast Water |
| Alternate | Fisheries Accidental (not Oyster) |