Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Continuing expansion of non-indigenous crayfish species in Northern Europe: first established spiny-cheek crayfish Faxonius limosus (refinesque, 1817) population in Estonia.

Abstract

First sighting of the non-indigenous spiny-cheek crayfish Faxonius limosus (Refinesque, 1817) in Estonia was registered in October 2017 in the pre-estuary of the Pärnu River which flows into the Baltic Sea. This indicates the continuing expansion of this species in Northern Europe. The detection site is about 70 km from the border of Latvia, a country where F. limosus is already present, but in the studied rivers which flow to the Gulf of Riga between the Pärnu River and Latvian border, no F. limosus was found. This suggests that a human-assisted introduction of the species into the Pärnu River is very likely.