Invasion
Invasion Description
1st Record: Newfoundland/Bonne Bay (Hooper, 1975, cited by Callahan et al. 2010)
Geographic Extent
Newfoundland/Bonne Bay (Hooper, 1975, cited by Callahan et al. 2010); Prince Edward Island/St. Peters Bay (2001, Locke et al. 2007); Belleoram/Newfoundland/Gulf of St. Lawrence (2012, McKenizie et al. 2016); Prince Edward Island/Savage Harbour (2002, Locke et al. 2007); Prince Edward Island/Brudenell Estuary (2005, Ramsay et al. 2008); Prince Edward Island/St. Peters Bay (Yund et al. 2015); Cheticamp/Nova Scotia/Gulf of St. Lawrence (2006, Sephton et al. 2011); Little Port Harmon/Newfoundland/Gulfof St. Lawrence (2013-2014, McKenzie et al. 2016); Codroy/Newfoundland/Gulfof St. Lawrence (2013-2014, McKenzie et al. 2016); Port aux Basques/Newfoundland/Gulfof St. Lawrence (2013-2014, McKenzie et al. 2016
Vectors
| Level | Vector |
|---|---|
| Alternate | Hull Fouling |
| Alternate | Fisheries Accidental (not Oyster) |
Regional Impacts
| Economic Impact | Fisheries | |
| Botrylloides violaceus was reportedly fouling mussel (Mytilus edulis a)quaculture sites in Prince Edward Island (Carman et al. 2010; Arens et al. 2011). Fouling by B. schlosseri did not affect cultured mussels through competion for phytoplankton, unlike Ciona intestinalis or Styela clava (Comeau et al. 2015). However, fouling by Botryllus schlosseri and Botrylloides violaceus had little effect on mussel growth and production (Arens et al. 2011). High-pressure water spraying reduced fouling of mussels. However, further studies showed that frequent spraying could affect mussel production, and could increase the spread of B. schlosseri through fragmentation (Paetzold et al. 2012). | ||