Invasion
Invasion Description
1st Established Record: Pomquet Harbor/Nova Scotia/Gulf of St. Lawrence (2007, Williams et al. 2015, overwintering and reproduction seen, population established and increasing by 2013) 1st Record: Prince Edward Island/Gulf of St. Lawrence (1979, Whyte et al. 1992; Minchin 2003 - reproduction in hatcheries, planted in estuaries)
Geographic Extent
Prince Edward Island/Canada/Gulf of St. Lawrence (1979, Whyte et al. 1992; Minchin 2003 - reproduction in hatcheries, planted in estuaries); Pomquet Harbor/Nova Scotia/Gulf of St. Lawrence (Williams et al. 2015, overwintering and reproduction seen, population established and increasing by 2013)
Vectors
| Level | Vector |
|---|---|
| Alternate | Fisheries Intentional |
| Alternate | Fisheries Accidental (not Oyster) |
Regional Impacts
| Economic Impact | Fisheries | |
| Although it does not survive the winter in the Gulf of St. Lawrence, and is dependent on hatcheries for survival and reproduction, A. irradians sustains a 'put and take' fishery in estuaries of Prince Edward Island (Whyte et al. 1993; Minchin 2003). Discovery of a protozoan parasite, Perkinsus karlsoni in the scallops caused a 2-year suspension of Bay Scallop stocking, before experiments showed that this organism was not transmissible to other shellfish (Whyte et al. 1993). | ||