Invasion
Invasion Description
1st Record: Parknahallagh, County Galway/Ireland/South Galway Bay (Sep 26, 2007, USGS Woods Hole Science Center 2008, 53 deg 10.80 min N, 08 deg 57.10 min W). Water depth, low intertidal. Sep 26, 2007, overgrowing and hanging from oyster bags on trestle installations above the seabed.)
Geographic Extent
Parknahallagh, County Galway/Ireland/South Galway Bay (Sep 26, 2007, Woods Hole Science Center 2008, 53 deg 10.80 min N, 08 deg 57.10 min W). Water depth, low intertidal. Sep 26, 2007, overgrowing and hanging from oyster bags on trestle installations above the seabed.); Murrisk, County Mayo/Ireland /Clew Bay (Nov 9, 2007, Woods Hole Science Center 2008. 53 deg 47.43 min N, 09 deg 37.02 min W). Water depth, low intertidal oyster trestles); Ireland/Killary Fjord (2013, Palanisamy et al. 2018);Holyhead Marina, Anglesey Island,/Wales/Irish Sea (8/2008, attemoted eradication (Sambrook et al. 2014, eradication unsuccessful); Plymouth Yacht Haven marina, Plymouth, Devon/England/Celtic Sea (9/22/2008, Griffith et al. 2009, colonies removed); Exmouth, Cornwall/England/English Channel (2009, Bishop et al. 2015); Largs Yacht Haven/Scotland/Firth of Clyde (2009, Beveridge et al. 2011); Scotland/Loch Creran (9/2016, ICES WGITMO 56.527444, -5.339222, oyster farm; Cottier-Cook et al. 2019).
Vectors
| Level | Vector |
|---|---|
| Alternate | Hull Fouling |
| Alternate | Fisheries Accidental (not Oyster) |
| Alternate | Oyster Accidental |
Regional Impacts
| Economic Impact | Fisheries | |
| Fouling of cultured mussels by a variety of non-native tunicates was reported beginning in 2013, and was a serious problem by 2016 (Palanisamy et al. 2018). | ||