The current distribution of signal and native crayfish in the Broadmead Brook, Wiltshire

Spink, Joanna and Rowe, Joanna (2002) The current distribution of signal and native crayfish in the Broadmead Brook, Wiltshire. Freshwater Forum, 19, pp. 3-10.

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Abstract

Signal crayfish (Pacifastacus leniusculus) have existed in the upper reaches of Broadmead Brook in Wiltshire since 200 individuals were introduced at West Kington in 1981. The population has expanded upstream and downstream since this introduction, however, giving rise to concerns that it may potentially threaten the native crayfish population further downstream. Signal crayfish can act as a vector of crayfish plague - a disease caused by the fungus Aphanomyces astaci Schikora which results in almost complete mortality to the native, white-clawed crayfish Austropotamobius pallipes. The native crayfish in Broadmead Brook have not yet succumbed to crayfish plague and are currently free of the disease. However, as signal crayfish appear to out-compete the native species, the native population could still be under threat. In this article, we highlight the findings of previous crayfish surveys on Broadmead Brook and describe work undertaken in summer 2001 to map the current distribution of native and signal crayfish. Finally, options for controlling the spread of signal crayfish are discussed.

Item Type: Article
Title: The current distribution of signal and native crayfish in the Broadmead Brook, Wiltshire
Personal Creator/Author:
CreatorsEmail
Spink, Joanna
Rowe, Joanna
Refereed: No
Journal or Publication Title: Freshwater Forum
Volume: 19
Page Range: pp. 3-10
Date: 2002
ISSN: 0961-4664
Issuing Agency: Freshwater Biological Association
Uncontrolled Keywords: Introduced species; Freshwater crustaceans; Ecological distribution; Surveys; Trap fishing; England; Broadmead Brook; Pacifastacus leniusculus; Austropotamobius pallipes
Subjects: Ecology
Limnology
Item ID: 4725
Depositing User: Hardy B Schwamm
Date Deposited: 08 Jan 2011 12:55
Last Modified: 29 Sep 2011 15:58
URI: http://aquaticcommons.org/id/eprint/4725

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