Journal of Helminthology

Short Communication

Introduction and spread of non-native parasites with Silurus glanis L. (Teleostei: Siluridae) in UK fisheries

A.J. Readinga1 c1, J.R. Brittona2, G.D. Daviesa1, A.P. Shinna3 and C.F. Williamsa1

a1 Environment Agency, Brampton, Cambridgeshire PE28 4NE, UK

a2 Centre for Conservation Ecology and Environmental Science, School of Applied Sciences, Bournemouth University, Poole BH12 5BB, UK

a3 Institute of Aquaculture, University of Stirling, Stirling FK9 4LA, UK

Abstract

Despite growing concern of the ecological risks posed by the European catfish Siluris glanis L. in freshwater fisheries, little information exists on the parasite fauna of this silurid catfish in Britain. Parasitological examinations of released S. glanis from four still-water fisheries in England revealed the presence of Thaparocleidus vistulensis (Siwak, 1932) and Ergasilus sieboldi (Nordmann, 1832), both non-native parasites, the latter known to be an important fish pathogen. This represents the first record of T. vistulensis from British freshwater fish. The human-assisted movement of S. glanis between UK recreational still-water fisheries provides a clear avenue for the introduction and spread of non-native parasites.

(Received April 12 2011)

(Accepted October 18 2011)

(Online publication December 01 2011)