Invasion
Invasion Description
1st established Record: Denmark/Isefjorden (1990s, Wrange et al. 2007, natural spatfall by 2007); 1st Record: Tjarno/Sweden/Kattegatt (1973-1976, Laugen et al. 2015)
Geographic Extent
Denmark/Isefjorden (1990s, Wrange et al. 2007, natural spatfall by 2007, found at 5 sites, mean density 0.03 ± 0.03 m-3); Gothenburg-Stromstad/Sweden/Kattegat (2007, Wrange et al. 2010, 0.86 m-3)
Vectors
| Level | Vector |
|---|---|
| Probable | Fisheries Accidental (not Oyster) |
Regional Impacts
| Ecological Impact | Competition | |
| Moderate level of community impacts (Kattegatt and Belt Seas) (Zaiko et al. 2011) | ||
| Ecological Impact | Habitat Change | |
| Moderate level of habitat impacts (Kattegatt and Belt Seas) (Zaiko et al. 2011). | ||