American signal crayfish ‘dumped’ in Cumbrian river

An invasive species of crayfish found dumped in a Cumbrian river is a “major concern” for the native species, the Environment Agency has said. Remains of 11 American signal crayfish have been discovered near Tebay.

The species carries crayfish plague, a “devastating” fungal disease that has “significantly threatened” the native population in the south, the EA said.

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