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Evidence for the co-existence of separate strains or species of Ligula in Lough Neagh, Northern Ireland

Published online by Cambridge University Press:  12 April 2024

P.D. Olson ,
D.T.J. Littlewood ,
D. Griffiths ,
C.R. Kennedy  and
C. Arme
P.D. Olson
Affiliation:
Department of Zoology, The Natural History Museum, Cromwell Road, London, SW7 5BD, UK:
D.T.J. Littlewood
Affiliation:
Department of Zoology, The Natural History Museum, Cromwell Road, London, SW7 5BD, UK:
D. Griffiths
Affiliation:
School of Environmental Studies, University of Ulster at Coleraine, Co. Londonderry, BT52 1SA, UK:
C.R. Kennedy
Affiliation:
Department of Biological Sciences, University of Exeter, Exeter, Devon, EX4 4PS, UK:
C. Arme*
Affiliation:
Parasitology Research Laboratory, School of Life Sciences, Keele University, Keele, Staffordshire, ST5 5BG, UK
*
*Author for correspondence Fax: 01782 583516 E-mail: c.arme@biol.keele.ac.uk
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Abstract

Ligula (Cestoda: Pseudophyllidea) infections in gudgeon (Gobio gobio) and roach (Rutilus rutilus) differ markedly in the pathology that is observed in the host, particularly with respect to a tissue response and the extent of inhibition of gonadal development. The entire internal transcribed spacer (ITS) region (ITS-1, 5.8S and ITS-2) and the large subunit domains D1–D3 were sequenced and compared in parasites from these fish from Lough Neagh, Northern Ireland, together with a single specimen from minnow (Phoxinus phoxinus) from Wales. Sufficient differences were observed between parasites from R. rutilus and G. gobio to support the suggestion that they may represent different strains/species. In contrast, Ligula from P. phoxinus closely resembled those from R. rutilus. Ligula infections in G. gobio were recorded prior to the introduction of R. rutilus. The co-existence of separate strains or species of Ligula in Lough Neagh probably resulted from the introduction of R. rutilus to these waters, correlated with an increase in the number of great crested grebes (Podiceps cristatus).

Type
Research Article
Information
Journal of Helminthology , Volume 76 , Issue 2 , June 2002 , pp. 171 - 174
Copyright
Copyright © Cambridge University Press 2002

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