Species Regional Summary
Gammarus tigrinus
None ( NEA-II )

Invasion History Vectors Impacts References

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 ImpactCompetition
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).
 

References

Full Reference List for Gammarus tigrinus

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