Invasion
Invasion Description
1st record: Le Havre/France/English Channel (1999, Breton et al. 2004). Abundance has increased throughout the coastline (Gothland et al. 2013).
Geographic Extent
Hampton Jetty, Kent/England/Herne Bay (4/3/15, Seeley et al. 2015, 51 22 14 N 1 05 53E, 1 specimen); Querqueville, Normandy/France/Cherbourg Harbor (2008, Dauvin 2009; Dauvin and DuFosse 2011); Salines, Normandy/France/Cherbourg Harbor (2008, Dauvin 2009; Dauvin and DuFosse 2011); Gatteville-Phare, Normandy/France/English Channel (2008, Dauvin 2009); La Hougue, Normandy/France/English Channel (2008, Dauvin 2009); Le Havre/France/English Channel (1999, Breton et al. 2004); Berck/France/English Channel (04/09/2008, Dauvin et al. 2009; Dauvin and DuFosse 2011; 50 23'36"N, 1 ;33'27"E); Boulogne/France/Boulogne Harbour (4/24/2008, Dauvin et al. 2009, Dauvin and DuFosse 2011; 50 43'41"N, 1 35'49"E); Dunkirk/France/Dunkirk Harbour (5/6/2008, Dauvin et al. 2009, Dauvin and DuFosse 2011, 51 03'03"N, 2 22'16"E, Gothland et al. 2013; Belgium-Netherlands (le Pays Bas)/North Sea; Knokke-Heist, Nieuwpoort/Belgium/North Sea (2007, Kerckhof et al. 2007); Thomton Bank Wind Farm, 30 km offshore/Belgium/North Sea (2011-2012, de Mesel et al. 2015, 51 32 52.73500 N, 2 55 46.27300E, occasional); Netherlands/Wadden Sea (1994, Gittenberger et al. 2010); Norderney, Lower Saxony/Germany/Wadden Sea (11/2007, Obert et al. 2007); Isle of Sylt/Germany/Wadden Sea (2007, Landschoff et al. 2013); Bensersiel/Germany/Wadden Sea (2009, Buschbaum et al. 2012); Wilhelmhaven-Borkum/Gemany/Wadden Sea (2014, Rohde et al. 2017); Helgoland/Germany/North Sea (2007, Jungblut et al. 2017)
Vectors
Level | Vector |
---|---|
Probable | Ballast Water |
Regional Impacts
Ecological Impact | Competition | |
In field experiments in rock jetties on the Ise of Sylt, in the Wadden Sea, Germany, H. sanguineus displaced juvenile Carcinus maenas (Green Crabs) from patches of boulders. However, this displacement would have no effect on the large populaiton of C. maenas in other habitats (Landschoff et al. 2013). On the island of Helgoland, the abundance of H. sanguineus is increasing. It outnumbered C. maenas at some locations, but this may be the result of increased larval settle ment in sheltered locations (Jungblut et al. 2017). | ||