Blar i forfatter "Kuhn, Jesper A."

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    • Effects of fish species composition on Diphyllobothrium spp. infections in subarctic brown trout - is three-spined stickleback a key species? 

      Kuhn, Jesper A.; Frainer, André; Knudsen, Rune; Kristoffersen, Roar; Amundsen, Per-Arne (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-04-25)
      Subarctic populations of brown trout (Salmo trutta) are often heavily infected with cestodes of the genus Diphyllobothrium, assumedly because of their piscivorous behavior. This study explores possible associations between availability of fish prey and Diphyllobothrium spp. infections in lacustrine trout populations. Trout in i) allopatry (group T); ii) sympatry with Arctic charr (Salvelinus alpinus) ...

    • Molecular analyses reveal high cryptic diversity of trematodes in a sub-Arctic lake 

      Soldánová, Miroslava; Georgieva, Simona; Roháčová, Jana; Knudsen, Rune; Kuhn, Jesper A.; Henriksen, Eirik Haugstvedt; Siwertsson, Anna; Shaw, Jenny C.; Kuris, Armand M.; Amundsen, Per-Arne; Scholz, Tomas; Lafferty, Kevin D.; Kostadinova, Aneta (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-03-14)
      To identify trematode diversity and life-cycles in the sub-Arctic Lake Takvatn, Norway, we characterised 120 trematode isolates from mollusc first intermediate hosts, metacercariae from second intermediate host fishes and invertebrates, and adults from fish and invertebrate definitive hosts, using molecular techniques. Phylogenies based on nuclear and/or mtDNA revealed high species richness (24 ...

    • A simplified method to estimate Diphyllobothrium spp. infection in salmonids 

      Kuhn, Jesper A.; Knudsen, Rune; Kristoffersen, Roar; Amundsen, Per-Arne (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-10-13)
      Some fish parasites constitute severe management problems as they may cause mortality of their fish host or are important zoonoses of humans. Parasite assessments are therefore critical to keep track of infections. If conventional sampling techniques can be simplified, parasite assessments might be easier to obtain, less time-consuming and more extensive. In this study, we compare the ...

    • Temporal changes and between-host variation in the intestinal parasite community of Arctic charr in a subarctic lake 

      Kuhn, Jesper A.; Knudsen, Rune; Kristoffersen, Roar; Primicerio, Raul; Amundsen, Per-Arne (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-03-16)
      The occurrence of trophically transmitted intestinal parasites in Arctic charr was analyzed from data material collected over two decades from Lake Takvatn, northern Norway. The main objectives were to investigate (i) between-year variation in parasite infracommunity composition, (ii) between-host variation in infracommunity composition, and (iii) possible interspecific interaction between parasites. ...