Invasion
Invasion Description
1st Record: Salem/MA/Salem Harbor (2000, MIT Sea Grant 2007)
Geographic Extent
Jodrey State Pier, Gloucester/MA/Gloucester Harbor (2010, Massachusetts Office of Coastal Zone Management 2013); Hawthorne Cove Marina, Salem/MA/Salem Harbor (2000, MIT Sea Grant 2007; 2010, Massachusetts Office of Coastal Zone Management 2013); Winter Island/Salem/MA/Salem Harbor (2008, MIT Sea Grant 2011); Lynn/MA/Lynn Harbor (2002, Agius 2007); Rowes Wharf, Boston/MA/Boston Harbor (2013, Wells et al. 2014)
Vectors
| Level | Vector |
|---|---|
| Probable | Hull Fouling |
Regional Impacts
| Ecological Impact | Competition | |
| In experiments in Lynn Harbor, Massachusetts Bay, Diplosoma listerianum achieved a stand-off with Botrylloides violaceus, becoming co-dominant, covering ~37% of the plates at the peak of its growth (Agius 2007). | ||