Invasion
Invasion Description
1st Record: Salwarpe/England/inland brine seeps (1931, Kelly et al. 2006a)
Geographic Extent
Salwarpe/England/inland brine seeps (1931, Kelly et al. 2006a); Coventry/England/Wyken Slough (inalnd saline lake, Hynes 1955); near Liverpool/England/River Dee (nontidal, Hynes 1955); Northern Ireland/Lough Neagh (Bousfield 1958); Londonderry/Northern Ireland/River Foyle (2012, Nunn and Minchin 2013); Grote Put Antwerp-Ekeren/Belgium/Schelde (1995, Kerckhof et al. 2007); Flanders/Belgium/brackish polders (man-made ponds), 335 of 430 samples, Boets et al. 2011. .03-6 PSU); Ghent/Belgium/Ghent Harbor, Scheldt estuary (1993, Boetts et al. 2011); 11 coastal harbors/Belgium/North Sea (Boets et al. 2012); Netherlands/Ijselmeer (1964, Pinkster 1975; Kelly et al. 2006a, fishery food enhancement); Netherlands/Rhine River Delta (Kelly et al. 2006a); Germany/Ems estuary (1996, Nehring and Leuchs 1999); Cuxhaven/Germany/Wadden Sea (2009, Buschbaum et al. 2012); Germany/Werra River and estuary (1957, Kelly et al. 2006a, fishery food enhancement); Germany/Elbe River and estuary (limnetic-mesohaline, Nehring 2006, Kelly et al. 2006a); Bremen/Germany/Weser River (Haesloop and Scheffel 1991)
Vectors
| Level | Vector |
|---|---|
| Alternate | Ballast Water |
| Alternate | Fisheries Accidental (not Oyster) |
| Alternate | Fisheries Intentional |
Regional Impacts
| Ecological Impact | Competition | |
| Since its discovery in the Netherlands in 1964, Gammarus tigrinus rapidly spread and largely replaced the native G. duebeni, G. pulex, and G. zaddachi in fresh and brackish coastal waters of the Netherlands (Pinkster 1975; Pinkster et al. 1992). | ||