Invasion
Invasion Description
1st Record: Finland-Sweden/Gulf of Bothnia (1959, Taugbøl and Johnsen 2006; Olenin and Leppakoski 2007)
Geographic Extent
Finland-Sweden/Gulf of Bothnia (1959, Taugbøl and Johnsen 2006; Olenin and Leppakoski 2007)
Vectors
| Level | Vector |
|---|---|
| Probable | Fisheries Intentional |
Regional Impacts
| Economic Impact | Fisheries | |
| Pacifastacus leniusculus supports substantial fisheries in Sweden and other northern European countries. However, the native A. astacus is still preferred by many customers and sells for a higher price in Sweden and Finland (Holdich et al. 2009). Gren et al. (2009) estimated the loses for fisheries in Sweden due to the crayfish plague (Aphanomyces astaci) and the displacement of native crayfish by P. leniusculus at 365 to 598 million Swedish kroner (53-88 million US dollars). | ||
| Ecological Impact | Competition | |
| Pacifastacus leniusculus has displaced the native Noble Crayfish (Astacus astacus) in Sweden and Finland (Holdich et al. 2009). | ||
| Ecological Impact | Parasite/Predator Vector | |
| Disease Vector- Pacifastacus leniusculus is a major vector for the spread of the 'Crayfish Plague' fungus, Aphanomyces astaci, which has greatly reduced the abundance and range of native crayfish in Europe (Lowery and Holdich 1989). | ||