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Foraging success of juvenile pike Esox lucius depends on visual conditions and prey pigmentation

Author:
  • Mikael Jönsson
  • Samuel Hylander
  • Lynn Ranåker
  • Anders Nilsson
  • Christer Brönmark
Publishing year: 2011
Language: English
Pages: 290-297
Publication/Series: Journal of Fish Biology
Volume: 79
Issue: 1
Document type: Journal article
Publisher: Wiley-Blackwell

Abstract english

Young-of-the-year pike Esox lucius foraging on copepods experienced different foraging success depending on prey pigmentation in water visually degraded by brown colouration or algae. Both attack rate and prey consumption rate were higher for E. lucius foraging on transparent prey in brown water, whereas the opposite was true in algal turbid water. Pigments in copepod prey may have a cryptic function in brown water instead of a photo-protective function even if prey-size selectivity was stronger than selection based on pigmentation in juvenile E. lucius. (C) 2011 The Authors Journal of Fish Biology (C) 2011 The Fisheries Society of the British Isles

Keywords

  • Ecology
  • background contrast
  • cryptic pigmentation
  • turbidity
  • vision
  • water
  • colour

Other

Published
  • BECC
  • ISSN: 0022-1112
Anders Nilsson
E-mail: anders [dot] nilsson [at] biol [dot] lu [dot] se

Professor

Aquatic ecology

+46 46 222 83 65

+46 70 346 25 66

E-D130

50

Research group

Aquatic Ecology

Projects

Doctoral students and postdocs

Main supervisor

Varpu Pärssinen

Assistant supervisor

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