**Confirmed crayfish plague on the By Brook**

Dear all,  Following a significant native white-clawed crayfish kill on the By Brook, Wiltshire in August/September, it has been confirmed that the crayfish sampled were infected with Aphanomyces astaci, which is the water mould (fungus) that causes crayfish plague. Crayfish plague is a deadly disease that infects and kills our native white-clawed crayfish. The invasive non-native…