Invasion

Invasion Description

1st Record: Harpswell/ME/Basin Cove, Casco Bay (1949, Welch 1966, settlement seen)

Geographic Extent

Merepont/ME/Casco Bay (1961, Welch 1966); Harpswell/ME/Basin Cove, Casco Bay (1949, Welch 1966, settlement seen); Baileys Island/ME/Casco Bay (1961, Welch 1966, settlement seen); ME/Brigham's Cove, Casco Bay (1961, Welch 1966, settlement seen); Small Point/ME/Casco Bay (1955, Welch 1966, settlement seen); Harpswell Neck-Hermit Island/ME/Casco Bay (1984, Heinig and Tarbox 1985, spotty populations found, sufficent to support modest fisheries)