Invasion
Invasion Description
1st Record: Vyborg/Finland-Russia/Gulf of Finland (1933, Herborg 2005);
Geographic Extent
Vyborg/Finland-Russia/Gulf of Finland (1933, Herborg 2005); Rantasalmi/Finland/Haukivesi (Poronsalmi) (in the lake area of the Finnish inland, 1999, Valovirt and Erone 2000, cited by Pienimaki and Leppakoski 2004); Hango/Finland/Gulf of Finland-Baltic Sea (2004, Ojaveer et al. 2004)
Vectors
| Level | Vector |
|---|---|
| Alternate | Natural Dispersal |
| Alternate | Hull Fouling |
| Alternate | Ballast Water |