Crayfish Surveys and Management

Virile crayfish Orconectes virilis, one of the more recent aquatic invasive species to be found in England

Virile crayfish Orconectes virilis, one of the more recent aquatic invasive species to be found in England

Five Rivers Environmental Contracting provide a full range of crayfish survey (including white-clawed crayfish survey and non-native crayfish survey). Common survey methods include manual search, torching and crayfish trapping.

The United Kingdom has one species on native crayfish White Clawed Crayfish Austropotomobius pallipes and currently seven known species of non-native invasive crayfish in the wild (Signal Crayfish Pacafastacus leniusculus, Turkish Crayfish Astacus leptodactylus, Noble Crayfish Astacus astacus, Spiny-Cheek Crayfish Orconectes limosus, Virile Crayfish Orconectes virilis, Red Swamp Crayfish Procambarus clarkii and White River Crayfish Procambarus acutus).

Populations of white-clawed crayfish have declined rapidly since the 1970s and remaining populations are under constant threat from introductions on non-native invasive crayfish and associated crayfish plague.

The UKs only native species of crayfish, in decline across the country but still locally abundant in isolated pockets

The UKs only native species of crayfish, in decline across the country but still locally abundant in isolated pockets

Our specialist ecologists have held Natural England survey class licences for white-clawed crayfish for a number of years and are able to devise and carry out appropriate survey strategy for a multitude of project needs. We have extensive experience of carrying out non-native invasive crayfish surveys, and have authored a number of peer reviewed scientific papers on the subject.

We can advise on white-clawed crayfish conservation strategies, as well as containment and control measures for non-native invasive crayfish.


We would love to hear from you…

If you would like to find out more about who we are and what we do contact the team on 01722 783041 or email office@five-rivers.com