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EVIDENCE FOR A SEX PHEROMONE IN THE MULLEIN BUG, CAMPYLOMMA VERBASCI (MEYER) (HETEROPTERA: MIRIDAE)

Published online by Cambridge University Press:  31 May 2012

H.M.A. Thistlewood ,
J.H. Borden ,
R.F. Smith ,
H.D. Pierce Jr.  and
R.D. McMullen
H.M.A. Thistlewood
Affiliation:
Centre for Pest Management, Department of Biological Sciences, Simon Fraser University, Bumaby, British Columbia, Canada V5A 1S6
J.H. Borden
Affiliation:
Centre for Pest Management, Department of Biological Sciences, Simon Fraser University, Bumaby, British Columbia, Canada V5A 1S6
R.F. Smith
Affiliation:
Centre for Pest Management, Department of Biological Sciences, Simon Fraser University, Bumaby, British Columbia, Canada V5A 1S6
H.D. Pierce Jr.
Affiliation:
Department of Chemistry, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6
R.D. McMullen
Affiliation:
Agriculture Canada Research Station, Summerland, British Columbia, Canada V0H 1Z0
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Abstract

Male mullein bugs, Campylomma verbasci (Meyer), were attracted in field experiments in the Okanagan Valley of British Columbia to traps baited with females, extracts of crushed females, or Porapak Q-captured volatiles from females on common mullein, Verbascum thapsus L. Extracts from the female head and thorax attracted more males than did abdominal extracts. Traps baited with C. verbasci of both sexes caged together were not attractive. Analysis by coupled gas chromatography – mass spectrometry revealed n-butyl butyrate and n-hexyl butyrate in female extracts and captured volatiles, but only the latter compound in male extracts. However, these esters were unattractive, either alone or combined. We suggest that Porapak Q-captured volatiles could be used in pheromone isolation, and that pheromone-baited traps have promise in monitoring populations of C. verbasci.

Résumé

Des punaises mâles de la molène, Campylomma verbasci (Meyer), ont été attirées dans le cadre d’expériences sur le terrain effectuées dans la vallée de l’Okanagan (Colombie-Britannique) vers des pièges appâtés de femelles, d’extraits de femelles écrasées ou de substances volatiles captées au Porapak Q de femelles trouvées sur la molène vulgaire, Verbascum thapsus L. Les extraits provenant de la tête et du thorax de femelles attirent plus de mâles que les extraits abdominaux. Les pièges appâtés de C. verbasci des deux sexes mis en cage ensemble ne sont pas attractifs. L’analyse par la chromatographie en phase gazeuse et la spectrométrie de masse révèle la présence de butyrate de n-butyle et de butyrate de n-hexyle dans les extraits de femelles et les substances volatiles captées, mais seulement du dernier composé dans les extraits de mâles. Mais ces esters ne sont pas attractifs, ni seuls ni combinés. Nous pensons que les substances volatiles captées au Porapak Q pourraient servir à isoler des phéromones et que les pièges aux phéromones sont prometteurs dans la surveillance des populations de C. verbasci.

Type
Articles
Information
The Canadian Entomologist , Volume 121 , Issue 9 , September 1989 , pp. 737 - 744
Copyright
Copyright © Entomological Society of Canada 1989

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