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A planktivorous specialist turns rapacious: piscivory in invading vendace Coregonus albula

Authors

  • S. Liso,

    1. Department of Arctic and Marine Biology, Faculty of BioSciences, Fisheries and Economics, University of Tromsø, N-9037 Tromsø, Norway
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  • K. Ø. Gjelland,

    1. Department of Arctic and Marine Biology, Faculty of BioSciences, Fisheries and Economics, University of Tromsø, N-9037 Tromsø, Norway
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  • Y. S. Reshetnikov,

    1. A. N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, 33 Leninsky Prospect, Moscow 117071, Russia
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  • P.-A. Amundsen

    Corresponding author
    1. Department of Arctic and Marine Biology, Faculty of BioSciences, Fisheries and Economics, University of Tromsø, N-9037 Tromsø, Norway
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Tel.: +47 77644539; email: per-arne.amundsen@uit.no

Abstract

Following invasion and establishment in a subarctic watercourse, small-sized vendace Coregonus albula were surprisingly found to include fish prey in their diet. The zooplankton resource was severely depleted and only made a minor dietary contribution.

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