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THE FUNGUS BEAUVERIA BASSIANA (DEUTEROMYCOTINA: HYPHOMYCETACEAE) IN THE WESTERN BALSAM BARK BEETLE, DRYOCOETES CONFUSUS (COLEOPTERA: SCOLYTIDAE)1

Published online by Cambridge University Press:  31 May 2012

H. S. Whitney ,
D. C. Ritchie ,
J. H. Borden  and
A. J. Stock
H. S. Whitney
Affiliation:
Pacific Forest Research Centre, Canadian Forestry Service, Victoria, British Columbia V8Z 1M5
D. C. Ritchie
Affiliation:
Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia V5A 1S6
J. H. Borden
Affiliation:
Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia V5A 1S6
A. J. Stock
Affiliation:
British Columbia Ministry of Forests, Prince Rupert Region, Smithers, British Columbia V0J 2N0
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Abstract

The natural occurrence of beauveriosis in Dryocoetes confusus (Swaine) in Abies lasiocarpa (Hook.) Nutt. in British Columbia is reported, and the pathogenicity of Beauveria bassiana (Bals.) Vuill. isolated from D. confusus was confirmed experimentally. Also, direct observations of newly established pairs of D. confusus in glass – phloem sandwich cultures showed that cadavers of B. bassiana-killed females were walled-off with frass by healthy males.

Résumé

L'incidence naturelle de la beauveriose chez Dryocoetes confusus (Swaine) qui parasite Abies lasiocarpa (Hook.) Nutt., en Colombie-Britannique, est signalée. La pathogénicité de son agent, Beauveria bassiana (Bals.) Vuill., obtenu de D. confusus a été confirmée expérimentalement. En outre, des observations directes de paires de D. confusus récemment établies dans des sandwiches de verre et de phloème ont montré que les mâles sains ont emmuré les cadavres des femelles tuées par B. bassiana derrière leurs débris et leurs excréments.

Type
Articles
Information
The Canadian Entomologist , Volume 116 , Issue 10 , October 1984 , pp. 1419 - 1424
Copyright
Copyright © Entomological Society of Canada 1984

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