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Molecular identification of Taenia spp. in the Eurasian lynx (Lynx lynx) from Finland

Published online by Cambridge University Press:  25 January 2013

A. LAVIKAINEN ,
V. HAUKISALMI ,
G. DEKSNE ,
K. HOLMALA ,
M. LEJEUNE ,
M. ISOMURSU ,
P. JOKELAINEN ,
A. NÄREAHO ,
J. LAAKKONEN  and
E. P. HOBERG
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A. LAVIKAINEN*
Affiliation:
Department of Bacteriology and Immunology, Infection Biology Program, Haartman Institute, P.O. Box 21, FI-00014, University of Helsinki, Finland
V. HAUKISALMI
Affiliation:
Vantaa Research Unit, Finnish Forest Research Institute, P.O. Box 18, FI-01301, Vantaa, Finland Finnish Museum of Natural History, P.O. Box 17, FI-00014, University of Helsinki, Finland
G. DEKSNE
Affiliation:
Institute of Food Safety, Animal Health and Environment ‘BIOR’, Lejupes Street 3, Riga, Latvia Institute of Systematic Biology, Daugavpils University, Vienibas Street 13, Daugavpils, Latvia
K. HOLMALA
Affiliation:
Finnish Game and Fisheries Research Institute FGFRI, P.O. Box 2, FI-00791 Helsinki, Finland
M. LEJEUNE
Affiliation:
Canadian Cooperative Wildlife Health Centre, Faculty of Veterinary Medicine, 2513, Health Sciences Centre, University of Calgary, Alberta, Canada
M. ISOMURSU
Affiliation:
Production Animal and Wildlife Research Unit, Finnish Food Safety Authority Evira, Elektroniikkatie 3, FI-90590, Oulu, Finland
P. JOKELAINEN
Affiliation:
Department of Veterinary Biosciences, Faculty of Veterinary Medicine, P.O. Box 66, FI-00014, University of Helsinki, Finland
A. NÄREAHO
Affiliation:
Department of Veterinary Biosciences, Faculty of Veterinary Medicine, P.O. Box 66, FI-00014, University of Helsinki, Finland
J. LAAKKONEN
Affiliation:
Department of Veterinary Biosciences, Faculty of Veterinary Medicine, P.O. Box 66, FI-00014, University of Helsinki, Finland
E. P. HOBERG
Affiliation:
US National Parasite Collection, ARS, USDA, Animal Parasitic Diseases Laboratory, BARC East 1180, 10300 Baltimore Avenue, Beltsville, MD 20705, USA
A. SUKURA
Affiliation:
Department of Veterinary Biosciences, Faculty of Veterinary Medicine, P.O. Box 66, FI-00014, University of Helsinki, Finland
*
*Corresponding author: Department of Bacteriology and Immunology, Haartman Institute, P.O. Box 21, FI-00014 University of Helsinki, Finland. Tel. +358919126891. Fax: +358919126382. E-mail: antti.lavikainen@helsinki.fi
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Summary

Cestodes of the genus Taenia are parasites of mammals, with mainly carnivores as definitive and herbivores as intermediate hosts. Various medium-sized cats, Lynx spp., are involved in the life cycles of several species of Taenia. The aim of the present study was to identify Taenia tapeworms in the Eurasian lynx (Lynx lynx) from Finland. In total, 135 tapeworms from 72 lynx were subjected to molecular identification based on sequences of 2 mtDNA regions, the cytochrome c oxidase subunit 1 and the NADH dehydrogenase subunit 1 genes. Available morphological characters of the rostellar hooks and strobila were compared. Two species of Taenia were found: T. laticollis (127 samples) and an unknown Taenia sp. (5 samples). The latter could not be identified to species based on mtDNA, and the rostellar hooks were short relative to those described among other Taenia spp. recorded in felids from the Holarctic region. In the phylogenetic analyses of mtDNA sequences, T. laticollis was placed as a sister species of T. macrocystis, and the unknown Taenia sp. was closely related to T. hydatigena and T. regis. Our analyses suggest that these distinct taeniid tapeworms represent a putative new species of Taenia. The only currently recognized definitive host is L. lynx and the intermediate host is unknown.

Keywords

Taenia laticollisTaenia sp.mtDNAphylogenylynx
Type
Research Article
Information
Parasitology , Volume 140 , Issue 5 , April 2013 , pp. 653 - 662
Copyright
Copyright © Cambridge University Press 2013

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