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Taenia arctos n. sp. (Cestoda: Cyclophyllidea: Taeniidae) from its definitive (brown bear Ursus arctos Linnaeus) and intermediate (moose/elk Alces spp.) hosts

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Abstract

Taenia arctos n. sp. (Cestoda: Cyclophyllidea: Taeniidae) is described from the brown bear Ursus arctos Linnaeus (definitive host) and moose/elk Alces spp. (intermediate hosts) from Finland (type-locality) and Alaska, USA. The independent status of the new species and the conspecificity of its adults and metacestodes have been recently confirmed by the mtDNA sequence data of Lavikainen et al. (2011; Parasitology International, 60, 289–295). Special reference is given to morphological differences between the new species and T. krabbei Moniez, 1879 (definitive hosts primarily canines for the latter), both of which use the moose/elk (Alces spp.) as intermediate hosts (the latter also uses Rangifer and perhaps other northern ruminants), and between the new species and T. ursina Linstow, 1893, both of which use the brown bear U. arctos as a definitive host. New morphological data are also provided for adults and cysticerci of T. krabbei. The analysis includes potentially useful morphometric features that have not been previously applied to Taenia spp.

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Acknowledgements

We would like to thank hunters in Finland, Alaska and Svalbard for their efforts in the collection of the material. We are also grateful to Kimberlee Beckmen (Alaska Department of Fish & Game, Division of Wildlife Conservation), Sauli Holmström, Audun Stien, Eva Fuglei and the Finnish Game and Fisheries Research Institute for providing us with specimens. The research work of V.H. was supported by NSF PBI award Nos 0818696 and 0818823 and the Oskar Öflund Foundation, and that of A.L. by a Finnish Medical Foundation encouragement scholarship. Antti Oksanen provided useful comments on the manuscript.

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Authors and Affiliations

  1. Vantaa Unit, Finnish Forest Research Institute, PO Box 18, 01301, Vantaa, Finland

    Voitto Haukisalmi

  2. Department of Bacteriology and Immunology, Infection Biology Program, Haartman Institute, University of Helsinki, PO Box 21, 00014, Helsinki, Finland

    Antti Lavikainen & Seppo Meri

  3. Faculty of Veterinary Medicine, University of Helsinki, Agnes Sjöbergin katu 2, 00014, Helsinki, Finland

    Sauli Laaksonen

  4. Huslab, Helsinki University Central Hospital Laboratory, PO Box 400, 00290 HUS, Helsinki, Finland

    Seppo Meri

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  1. Voitto Haukisalmi
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  2. Antti Lavikainen
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  3. Sauli Laaksonen
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  4. Seppo Meri
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Correspondence to Voitto Haukisalmi.

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Haukisalmi, V., Lavikainen, A., Laaksonen, S. et al. Taenia arctos n. sp. (Cestoda: Cyclophyllidea: Taeniidae) from its definitive (brown bear Ursus arctos Linnaeus) and intermediate (moose/elk Alces spp.) hosts. Syst Parasitol 80, 217–230 (2011). https://doi.org/10.1007/s11230-011-9324-9

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  • DOI: https://doi.org/10.1007/s11230-011-9324-9

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