Species Regional Summary
Chthamalus fragilis
Cape Cod to Cape Hatteras ( NA-ET3 )

Invasion History Vectors Impacts References

Invasion

Invasion Description

1st Record (introduced range): Woods Hole/MA/Vineyard Sound-Buzzards Bay (1898, M. A. Bigelow, in Sumner et al. 1913; Sumner 1909; Carlton et al. 2011).

Native range- The northern limit of the native range of this barnacle is unclear. It was not included in the 'Crustacea of New Jersey' by Fowler (1911), but was listed for Ocean City NJ by Pilsbry (1916). We have treated this record as native. Sumner (1909) knew only of Darwin's report of this barnacle (as C. stellatus) from Charleston SC (Darwin 1854).

Geographic Extent

Introduced Range: Woods Hole/MA/Vineyard Sound-Buzzards Bay (1898, M. A. Bigelow, in Sumner et al. 1913; Sumner 1909; Carlton et al. 2011); Penzance Point, Woods Hole/MA/Woods Hole Passage (1909, Sumner 1909); piers, Woods Hole/MA/Woods Hole Harbor (1909, Sumner 1909); piers, New Bedford/MA/New Bedford Harbor (1909, Sumner 1909); "everywhere on the shores of the region" Woods Hole/MA/Buzzards Bay-Vineyard Sound (Sumner et al. 1913); Buzzards Bay (Bourne)/MA/Buzzards Bay (1923, USNM 155507, US National Museum of Natural History 2008); Bourne Bridge, Buzzards Bay/MA/Cape Cod Canal (1983, Wethey 2002, very abundant); Graduate School of Oceanography Pier, Narragansett/RI/West Passage, Narragansett Bay (Lang 1981, planktonic larvae, Fofonoff, personal observations, adults and planktonic larvae); Colt State Park/Bristol/RI/Narragansett Bay (2000, MIT Sea Grant 2003); Kings Beach, Newport/RI/Rhode Island Sound (2010, MacIntyre et al. 2010; Massachusetts Office of Coastal Zone Management 2013); CT-NY/Long Island Sound (Weiss et al. 1995); Seaside Park, Bridgeport/CT/Long Island Sound (Singletary 2006, http://www1bpt.bridgeport.edu/~robert/seaside.htm )

Probable Native Range: Ocean City/NJ/Little Egg Harbor (Pilsbry 1916); NJ-DE/Delaware Bay (Gosner 1978); VA/York River, Chesapeake Bay (abundant in high intertidal of pilings and Spartina, Van Engle in Wass et al. 1972); Chesapeake Bay (Gosner 1978); Cape Charles/VA/Chesapeake Bay-Atlantic Ocean (Dando and Southward 1980); VA/Chesapeake Bay, Mobjack Bay, Bay Side (1916, USNM 79234, US National Museum of Natural History 2008, 'From Pine Stump Between Tides'); Smith Island, W Side Near N End/MD/Chesapeake Bay (1935, USNM 79235, US National Museum of Natural History 2008, 'From Grass Over Water, Intertidal'); Fisherman's Island/VA/Chesapeake Bay-Atlantic Ocean (1935, USNM 79236, USNM 79326, US National Museum of Natural History 2008)

Vectors

Level Vector
Alternate Hull Fouling
Alternate Oyster Accidental
Alternate Ballast Water

Regional Impacts

References

Full Reference List for Chthamalus fragilis

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