Invasion
Invasion Description
1st Record: Coos Bay/OR/Coos Bay (1950, Hartman and Reish, 1950, 'possibly Coos Bay' Chapman et al. 2011)
Geographic Extent
Aberdeen/WA/Chehalis River, Fry Creek Estuary (1953, USNM 26192, U.S. National Museum of Natural History 2015); WA/Stackpole Slough, Willapa Bay (2000, Cohen et al. 2001; Radashevsky 2005; Bloch and Novak 2011); Ilwaco/WA/Baker Bay (Jones 1983; Systma et al. 2004, 5-20 PSU); Shellfish rearing tanks, Marine Science Center/Newport/OR/Yaquina Bay (1970; Breese and Phibbs 1972); Newport/OR/Yaquina Bay (2010, Radashevsky, in Chapman et al. 2011); Coos Bay/OR/Coos Bay (1950, Hartman and Reish, 1950, 'possibly Coos Bay' Chapman et al. 2011); Charleston/OR/South Slough, Coos Bay (Carlton 1989); CA/Humboldt Bay (Barnhart 1992, cited by Boyd et al. 2002); Southport Landing and Klopp Lake/CA/Humboldt Bay (2000, Boyd et al. 2002)
Vectors
| Level | Vector |
|---|---|
| Alternate | Oyster Accidental |
| Alternate | Hull Fouling |
| Alternate | Ballast Water |
Regional Impacts
| Economic Impact | Fisheries | |
| IIn a Newport, Oregon shellfish hatchery, in 1970, Polydora cornuta was found to be feeding on larvae of Pacific Oysters (Crassostrea gigas and 'Manila Clams' (Venerupis philippinarum), and causing significant losses (Breese and Phipps 1972). | ||