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Related Experiment Videos

Dose-dependent response and preliminary observations on attraction range of Ips typographus to pheromones at low

A J Franklin1, J C Grégoir

  • 1Laboratoire de Biologie Animale et Cellulaire Université Libre de Bruxelles, Brussels, Belgium. Anne.Franklin@kbinirsnb.be

Journal of Chemical Ecology
|January 16, 2002
PubMed
Summary

Low release rates of European spruce bark beetle pheromones increased trap catches. Pheromone attraction range may exceed 50 meters, suggesting potential for improved pest management strategies.

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Area of Science:

  • Forestry
  • Entomology
  • Pest Management

Background:

  • The European spruce bark beetle, *Ips typographus*, is a significant forest pest.
  • Understanding pheromone responses is crucial for effective control strategies.

Purpose of the Study:

  • To investigate the dose-response relationship of *I. typographus* to low release-rate synthetic pheromones.
  • To assess the attraction range of these pheromones compared to a commercial lure (Pheroprax).

Main Methods:

  • Two experiments were conducted in a Belgian spruce forest.
  • A trapping experiment examined dose-response using varying release rates of (S)-cis-verbenol (cV) and 2-methyl-3-buten-2-ol (MB).
  • A release-recapture experiment evaluated attraction range using trap-trees and pheromone-baited window traps.

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Main Results:

  • Trap catches of *I. typographus* increased linearly with higher release rates of cV and MB.
  • Attraction range was positively correlated with pheromone release rate.
  • At the highest release rate, trap catches were similar to Pheroprax, but Pheroprax showed significant upwind flight, suggesting a broader attraction range.

Conclusions:

  • Low release-rate pheromones are effective in attracting *I. typographus*.
  • The attraction range of Pheroprax may extend beyond 50 meters.
  • These findings have implications for optimizing pheromone-based monitoring and control of spruce bark beetles.