Invasion
Invasion Description
1st Record?: Machiasport/ME/Machias Bay (1976, Larsen 2012).
Geographic Extent
Machiasport/ME/Machias Bay (1976, Larsen 2012); Duck Brook Flat, Cutler/ME/Holmes Bay (Tan and Beal 2015)
Vectors
| Level | Vector |
|---|---|
| Alternate | Natural Dispersal |
| Alternate | Hull Fouling |
| Alternate | Ballast Water |
Regional Impacts
| Ecological Impact | Predation | |
| Predation on commercially important Mya arenaria (Soft Shell Clam) was studied experimentally in Holmes Bay, Cutler ME. Recruitment was greatly reduced in open versus protected areas (Tan and Beal 2015). | ||
| Economic Impact | Fisheries | |
| Tan and Beal (2015) tested various types of netting used to exclude Green Crabs, and found that significant predation occurred, even when small clams were protected by netting, Crab predation can be underestimated, because some clams are consumed without damage to the shells (Tan and Beal 2015). | ||