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Title: Preventing the spread of crayfish plague in the South West
Author: Environment Agency South West Region
Document Type: Monograph
Up until the 1980s native crayfish were widespread in most river catchments in North and South Wessex and were present in Devon. These areas have seen drastic declines in their populations. They have not been recorded in Cornwall and it is considered that this is because the rivers are too naturally acidic. They are now only known to occur in the Bristol Avon catchment (North Wessex) and the rivers Ebble, Stour and Piddle (South Wessex). Historical records show native crayfish presence on the River Culm and the River Otter in Devon, although current status is unknown. Crayfish are found on the River Yeo and two of its tributaries, the River Creedy and Shobrooke Lake (Exe catchment). Current known distribution is shown on the adjacent map. This decline is largely due to crayfish plague, a virulent fungal disease carried by American signal crayfish.
Publisher: Environment Agency
Publication Date: [after 1996]
Publication Place: Exeter
Subject Keywords: CrayfishDisease controlPopulation decreaseGuidelines
Geographic Keywords: DevonBristol Avon and North Somerset Streams catchmentStour (Dorset)PiddleDorset
Extent: n.p. [6]
Total file downloads: 45

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