Invasion
Invasion Description
1st record: Boston/MA/Boston Harbor (Couthouy 1838)
Geographic Extent
Sandwich/MA/Cape Cod Bay (2000, MIT Sea Grant 2003; 2010, Massachusetts Office of Coastal Zone Management 2013); Barnstable/MA/Barnstable Harbor, Cape Cod Bay (2000, MIT Sea Grant 2003); Plymouth Town Wharf/MA/Plymouth Harbor, Cape Cod Bay (MIT Sea Grant 2003); Duxbury Town Pier/MA/Cape Cod Bay (2000, MIT Sea Grant 2003); Cohasset/MA/Massachusetts Bay (1907, USNM 6902, U.S. National Museum of Natural History 2003); Bay Pointe Maina, Quincy/MA/Boston Harbor (2000, MIT Sea Grant 2003); Boston/MA/Boston Harbor (Couthouy 1838); Black Falcon Terminal, Boston/MA/Boston Harbor (2000, MIT Sea Grant 2003); MWRA Deer Island Sewage Plant, Deer Island, Boston/MA/Boston Harbor (2000, MIT Sea Grant 2003); Rowes Wharf Boston/MA/Boston Harbor (2000, MIT Sea Grant 2003; 2010, Massachusetts Office of Coastal Zone Management 2013); Hawthorne Cove Marina, Salem/MA/Massachusetts Bay (2000, MIT Sea Grant 2003; 2010, Massachusetts Office of Coastal Zone Management 2013; Clade A,Bock et al. 2012); Winter Island, Salem/MA/Massachusetts Bay (2010, Massachusetts Office of Coastal Zone Management 2013); Tucks Point Marina, Beverly/MA/Massachusetts Bay (2000, MIT Sea Grant 2003); Gloucester/MA/Annisquam River (Massachusetts Bay) (1935, Dexter 1947); Gloucester State Pier/MA/Massachusetts Bay (2000, MIT Sea Grant 2003; 2010, Massachusetts Office of Coastal Zone Management 2013); Hampton State Pier/NH/Gulf of Maine (2003, MIT Sea Grant 2003); Hampton River Marina/NH/Hampton River (2010, Massachusetts Office of Coastal Zone Management 2013); Odiorne Point/NH/Gulf of Maine (2010, Massachusetts Office of Coastal Zone Management 2013); UNH Coastal Marine Lab Pier, Portsmouth/NH/Portsmouth Harbor (1993, Blezard 1999; 2003, MIT Sea Grant 2003; 2010, Massachusetts Office of Coastal Zone Management 2013); Great Bay Marina, Newington/NH/Great Bay (1993, Blezard 1999; 1994, USNM 21102 , U.S. National Museum of Natural History 2003); Wentworth Marina, Portsmouth/HN/Great Bay (2006, Harris and Dijkstra 2008); Coastal Marine Lab, Portsmouth/NH/Great Bay (2006, Harris and Dijkstra 2008); Great Bay Marina, Newington/NH/Great Bay (2006, Harris and Dijkstra 2008); Jackson Estuarine Lab, Adams Point/NH/Great Bay (Harris and Dijkstra 2008); Cape Elizabeth/ME/Dyers Cove, Casco Bay (2010, Massachusetts Office of Coastal Zone Management 2013); Portland Yacht Services Marina, Portland/ME/Portland Harbor (2003, MIT Sea Grant 2003; 2009, McNaught and Norden 2009); Port Harbor Marina, South Portland/ME/Portland Harbor (2003, MIT Sea Grant 2003); Brewer South Freeport Marina, South Freeport/ME/Casco Bay (2003, MIT Sea Grant 2003, 2009, McNaught and Norden 2009; Brewer South Freeport Maine/ME/Casco Bay (2003, MIT Sea Grant 2003; 2010, Massachusetts Office of Coastal Zone Management 2013); Orrs Island/ME/Casco Bay 2009, McNaught and Norden 2009); Lincoln County/ME/Damariscotta River (Dijkstra et al. 2007; Yund et al. 2015); Medomak/ME/Muscongus Bay (2009, McNaught and Norden 2009; Yund et al. 2015); ME/Penobscot Bay (Dijkstra et al. 2007); ME/Bagaduce River, Penobscot Bay (Yund et al. 2015); Blue Hill/ME/Blue Hill Bay (2009, McNaught and Norden 2009); Opechee Island/ME/Blue Hill Bay (2009, McNaught and Norden 2009); ME/Cobscook Bay (Trott 2004); Eastport Public Pier & Breakwater/ME/Passamaquoddy Bay (8-7-2005, MIT Sea Grant 2009); St. Andrews/New Brunswick/Passamaquoddy Bay (2006-2009, LeGresley et al. 2008; Martin et al. 2011); Beaver Harbour/New Brunswick/Bay of Fundy (2007-2009, Martin et al. 2011); Dipper Harbour/New Brunswick/Bay of Fundy (2007-2009, Martin et al. 2011); Digby/Nova Scotia/Gulf of Maine (2006, Sephton et al. 2011; Clade A Bock et al. 2012; Yund et al. 2015); Point Tupper, Port Hawksbury and Mulgrave/Nova Scotia/Gulf of Maine (Yund et al. 2015); Yarmouth/Nova Scotia/Gulf of Maine (2006, Sephton et al. 2011; Yund et al. 2015; Lacoursiere-Roussel et al. 2016); Port La Tour//Nova Scotia/Gulf of Maine (2006, Sephton et al. 2011; Clade A Bock et al. 2012)
Vectors
Level | Vector |
---|---|
Probable | Hull Fouling |
Regional Impacts
Ecological Impact | Competition | |
Recruitment of fouling organisms was reduced on colonial organisms incluiding B. schlosseri in Portsmouth Harbor, NH (Dijkstra et al. 2007). In experiments in Wells Harbor, Maine, Botryllus schlosseri grew rapidly on some artficial substrates (rubber and metal), outcompeting native organisms, but grew more slowly on natural substrates (shell, marble, slate) (Tyrell and Byers 2007). | ||
Economic Impact | Fisheries | |
Botryllus schlosseri was reportedly fouling aquaculture sites in Maine (Carman et al. 2010). | ||