Invasion
Invasion Description
1st Record: Nauvo/Finland/Archipelago Sea (5/2011, Vesakoski 2011, 1 specimen)
Geographic Extent
Nauvo/Finland/Archipelago Sea (5/2011, Vesakoski 2011, 1 specimen); Naantali, Lempisaari to Kasnäs/Finland/Archipelago Sea (2011, Katajisto et al. 2013)
Vectors
| Level | Vector |
|---|---|
| Alternate | Ballast Water |
| Alternate | Natural Dispersal |
Regional Impacts
| Ecological Impact | Competition | |
| In experiemnts, native Threespine Sticklebacks (Gasterosteus aculeatus) displayed agression against introduced shrimps (Palaemon elegans), but that reduced numbers of sticklebacks may have permitted the invasions (Jakubaviciute & Candolin 2021). | ||