Didemnum - New England Coast Occurrences and Images

First documented occurrence

Fort Island Narrows, Damariscotta River, Maine; July 19, 1993. Didemnum sp. colony living at 12 m (40 ft; at high tide) on a substrate of shell hash and gravel. Collected by I. Svane, C. Young, and T. Miller. Identified by G. Lambert, January 2004.

First anecdotal occurrence

A colonial tunicate resembling D. sp. has been observed on the dock pilings of the Darling Marine Center in Walpole, ME since 1988 (P. Yund, University of Maine) and since 1994 (R. Wahle, Bigelow Laboratories). Source: L. Harris.

A colonial tunicate resembling the species that was collected in Fort Island Narrows, Damariscotta River, Maine, in 1993 was observed there in 1988. source: T. Miller.

Web sites with imagery and text

MIT Sea Grant Marine Bioinvasions; Didemnum image and map of Massachusetts coastal occurrences.

University of Connecticut, Department of Marine Sciences, Team Benthos, Long-Term Epifaunal Population Dynamics See image of Didemnum lutarium? (possibly D. sp.)

Web sites with text only

MIT Sea Grant, 2003 Northeast Rapid Assessment Survey of invasive species, 2003. PDF format

Maine Today, Aug. 5, 2003; story on 2003 Northeast Rapid Assessment Survey of invasive species. PDF format

Images

• Cobscook Bay, Maine
• Cobscook Bay2, Maine
• Estes Head, Maine
• Fort Island Narrows, Maine
• Long Island Ledges, Maine
• Thrumcap Island, Maine
• Wentworth Point, Maine
• Boston Harbor, Massachusetts
• Chatham Harbor, Massachusetts
• Oak Bluffs, Massachusetts
• Orleans, Massachusetts
• Osterville Grand Island, Massachusetts
• Provincetown, Massachusetts
• Sandy Bay, Massachuseetts
• Sandwich Town Beach, Massachusetts
• Sandwich, Massachusetts
• Stage Harbor, Massachusetts
• Strong Island, Massachusetts
• Vineyard Haven, Massachusetts
• Wellfleet Harbor, Massachusetts
• West Falmouth Harbor, Massachusetts
• Woods Hole (Eel Pond), Massachusetts
• Woods Hole (Iselin Dock), Massachusetts
• Fort Point, New Hampshire
• New Castle Island, New Hampshire
• Piscataqua River, New Hampshire
• Beavertail Point, Rhode Island
• Fort Wetherill, Rhode Island
• Narragansett, Rhode Island

Location Information

Location data

New England and Atlantic Canada regional map
New England and Atlantic Canada, inset map A
New England and Atlantic Canada, inset map B
New England and Atlantic Canada, inset map C
New England and Atlantic Canada, inset map D