Invasion
Invasion Description
1st Record: Oban/Scotland/Firth of Lorne (2000, Willis et al. 2004, 56 27.090N, 05 27.33W)
Geographic Extent
Kinlochbervie/Scotland/Atlantic Ocean (2012, Nall et al. 2012); Oban/Scotland/Firth of Lorne (2000, Willis et al. 2004, 56 27.090N, 05 27.33 W); Ardrossan/Scotland/Firth of Clyde (2006, 55º38.4' 04º49.1', Ashton et al. 2006); Troon/Scotland/Firth of Clyde (2006, 55º33.2' 04º42.0', Ashton et al. 2006); Craobh Haven/Scotland/Sound of Jura (2006, 56°12.9' 05°33.4' Ashton et al. 2006); Dunstaffnage/Scotland/Loch Etive (2006, 56º11.0' 05º31.8', Ashton et al. 2006); Galway/Ireland/Bertraghboy Bay (7/16/2003, Tierney et al. 2004, Latitude: 53.388333 / Longitude: -9.85277; 2021, O'Shaughnessy 202t al. 29238); Barry & Swansea/Wales/Bristol Chennel (2019, Holmes and Callway 2021)
Vectors
| Level | Vector |
|---|---|
| Alternate | Hull Fouling |
| Alternate | Ballast Water |
| Alternate | Fisheries Accidental (not Oyster) |
Regional Impacts
| Ecological Impact | Competition | |
| In laboratory experiments in Scotland, C. mutica displaced the native caprellids C. linearis and Pseudoprotella phasma from natural (hydroid) and artificial habitat (plastic mesh) patches on fouling plates. Displacement of C. linearis occurred even when the density of the native was 10X that of C. mutica (Shucksmith et al. 2009). | ||
| Economic Impact | Fisheries | |
| Mussel farmers observed reduced settlement of spat during periods where C. mutica was most abundant; however a causal connection could not be confirmed (Ashton 2006). | ||