|Safety notes for members and visitors|
|The Eden Rivers Trust|
CRAYFISH PLAGUE UPDATE
Environment Agency sources have revealed that around 30 mature adults of the American Signal Crayfish were found in the River Glenderamackin at Threlkeld, a stone’s throw from PAA waters
Crayfish plague (caused by the fungus Aphanomyces astaci) has caused drastic losses of native crayfish in rivers in England. It is believed that this disease was introduced and is spread by the most frequently farmed species, the North American signal crayfish (Pasifastacus leniusculus) a carrier of the disease.
Cumbrian rivers and becks support some of the last remaining populations of the native white clawed crayfish - the Eden system is still free of this virulent disease and Penrith Anglers would urge any member, who fishes on other waters or any visiting angler, to be vigilant and follow the precautions listed below.
The difference between native white clawed crayfish and the signal crayfish
up to 30cm long
Native white-clawed crayfish up to 12 - 30cm long
Underside of claws=dirtywhite/pink
Claws = red
Crayfish Plague is spread
The fungal spores of crayfish plague spores can survive for up to two weeks in water, but can be killed by drying or disinfecting. .
Introducing signal crayfish into water previously free of the disease can spread crayfish plague.
It can also spread on people’s wet footwear and equipment.
Preventing the spread of crayfish plague
Disinfection of Equipment and Tackle
Typical iodophor products are Wescodyne/Iosan CCT and FAM 30/Iofarm,
generally available from farm or dairy suppliers.