Invasion

Invasion Description

1st Record: Bass Harbor/ME/Gulf of Maine (1937, introduced, established, Glude 1955)

Geographic Extent

Bass Harbor/ME/Gulf of Maine (1937, introduced, established, Glude 1956); Winter Harbor/ME/Gulf of Maine (1939, introduced, established, Glude 1955); Mount Desert Island/ME/Gulf of Maine (Williams et al. 2015, 43.86, 64.82, southenr and northern (Scandinavian haplotypes))