Fiddler Crabs Spreading Northward

An egg-bearing female fiddler crab, Uca pugnax, at Plum Island (MA)  Photo: Marine Biological Laboratory/A. Buselco-McKim.
An egg-bearing female fiddler crab, Uca pugnax, at Plum Island (MA) Photo: Marine Biological Laboratory/A. Buselco-McKim.

The Bangor Daily News reports that fiddler crabs are expanding their range along the New England coast. Six months ago, David Johnson, a biologist with the Woods Hole-based Marine Biological Laboratory, found fiddlers in the Great Marsh of southern New Hampshire—nearly 50 miles north of their previously documented range.

Since Johnson’s initial discovery, he has documented several salt marsh colonies of fiddler crabs in the Massachusetts towns of Danvers, Manchester-by-the-Sea, Gloucester, Essex, Ipswich, Rowley, Salisbury, and as far north as the marshes of Hampton, New Hampshire,

Read more about the spread of fiddler crabs into northern New England.