Piscivorous fish patrol krill swarms

Stein Kaartvedt*, Anders Røstad, Øyvind Fiksen, Webjørn Melle, Thomas Torgersen, Mari Tiseth Breien, Thor A. Klevjer

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

30 Scopus citations


Dense swarms of the krill Meganyctiphanes norvegica in the Norwegian Sea were patrolled by large, piscivorous fish, which apparently use the krill swarms as feeding grounds in their hunt for planktivores. For the krill, patrols of piscivores may add to the generally accepted anti-predator benefit of the swarming behavior. The fact that krill swarms govern small-scale patchiness of large piscivores emphasizes the key role of krill in oceanic ecosystems.

Original languageEnglish (US)
Pages (from-to)1-5
Number of pages5
JournalMarine Ecology Progress Series
StatePublished - Sep 1 2005
Externally publishedYes


  • Anti-predator benefits
  • Behavioral cascades
  • Fish
  • Meganyctiphanes norvegica
  • Swarms

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science
  • Ecology


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