To test the hypothesis that fiddler crabs in the expanded range escaped their historic parasites, we sampled 5 marshes in the expanded range and 5 in the historic range (n=~50/marsh). The latitude and longitude of each site is listed in the data file. Crabs were collected haphazardly by hand from each site. Crabs were sexed, noted for injuries, measured for size, and dissected live for parasites, which were identified to species when possible and counted per crab for metazoan parasites. Only presence/absence of non-metazoan parasites was noted.
Locations of marshes sampled included:
Portsmouth, New Hampshire
Rowley, Massachusetts
Beverly, Massachusetts
Weymouth, Massachusetts
Scituate, Massachusetts
Falmouth, Massachusetts
Noank, Connecticut
Little Egg Township, New Jersey
Cape Charles, Virginia
Sapelo Island, Georgia