Foraging activity of the carabid beetle Pterostichus melanarius Ill. in field margin habitats

  • Fournier E
  • Loreau M
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The foraging activity of the carabid beetle Pterostichus melanarius was studied in a capture-recapture experiment in field margin habitats. Two rectangular enclosures were installed over a succession of habitats with a decreasing prey availability: a hedge, a mixed crop strip and an adjacent crop culture. Marked starved and satiated individuals were released in the enclosures and recaptured during 8 days. Initial satiation state had a significant effect on activity. Also, the initial displacements of beetles depended both on the habitat and on the initial satiation state. P. melanarius appeared to have flexible habitat-use, depending mainly on three factors: the satiation state, the habitat preference of the species, and the prey availability in the habitat. © 2002 Elsevier Science B.V. All rights reserved.

Author-supplied keywords

  • Capture-recapture
  • Carabidae
  • Field margins
  • Foraging
  • France
  • Pterostichus melanarius

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  • Elisabeth Fournier

  • Michel Loreau

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