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ATTRACTION OF LASCONOTUS INTRICATUS KRAUS. (COLEOPTERA: COLYDIIDAE) TO THE AGGREGATION PHEROMONE OF THE FOUR-EYED SPRUCE BARK BEETLE, POLYGRAPHUS RUFIPENNIS (KIRBY) (COLEOPTERA: SCOLYTIDAE)

Published online by Cambridge University Press:  31 May 2012

W.W. Bowers  and
J.H. Borden
W.W. Bowers
Affiliation:
Forestry Canada, Newfoundland and Labrador Region, PO Box 6028, St. John's, Newfoundland, CanadaA1C 5X8
J.H. Borden
Affiliation:
Centre for Pest Management, Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia, CanadaV5A 1S6
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Abstract

The cylindrical bark beetle, Lasconotus intricatus Kraus., is attracted to multiple-funnel traps baited either with black spruce logs infested with male four-eyed spruce bark beetles, Polygraphus rufipennis (Kirby), or the male-produced aggregation pheromone, 3-methyl-3-buten-1-ol. The addition of the host terpenes, bornyl acetate and β-pinene, to 3-methyl-3-buten-1-ol reduced the attraction of L. intricatus. 3-Carene, myrcene, and α-pinene appeared to have a partial inhibitory effect. Catches in spring and summer disclosed a high degree of temporal coincidence between the two species. We hypothesize that L. intricatus utilizes the aggregation pheromone of P. rufipennis as a host-finding kairomone.

Résumé

Lasconotus intricatus Kraus., un scolyte de l’écorce, est attiré par des pièges multifonctionnels en forme d’entonnoir appâtés à l’aide de billes d’épinette noire infestées par des polygraphes de l’épinette, Polygraphus rufipennis (Kirby), ou par la phéromone d’agrégation produite par les mâles, le 3-méthylbut-3-én-1-ol. L’ajout des terpènes de l’hôte, l’acétate de bornyle et le β-pinène, au 3-méthylbut-3-én-1-ol a réduit l’attraction de L. intricatus. Le 3-carène, le myrcène et le α-pinène ont semblé avoir un effet inhibiteur partiel. Les captures effectuées au printemps et à l’été ont révélé un degré élevé de synchronisme entre les deux espèces. Nous supposons que L. intricatus utiliée la phéromone d’agrégation de P. rufipennis comme kairomone de détection de l’hôte.

Type
Articles
Information
The Canadian Entomologist , Volume 124 , Issue 1 , February 1992 , pp. 1 - 5
Copyright
Copyright © Entomological Society of Canada 1992

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