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CHANGES IN SPRUCE BUDWORM, CHORISTONEURA FUMIFERANA (LEPIDOPTERA: TORTRICIDAE), BIOMASS IN STANDS TREATED WITH COMMERCIAL BACILLUS THURINGIENSIS VAR. KURSTAKI

Published online by Cambridge University Press:  31 May 2012

O. N. Morris  and
A. Moore
O. N. Morris
Affiliation:
Forest Pest Management Institute, Canadian Forestry Service, Sault Ste. Marie, Ontario P6A 5M7
A. Moore
Affiliation:
Forest Pest Management Institute, Canadian Forestry Service, Sault Ste. Marie, Ontario P6A 5M7
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Abstract

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Larval biomass of the spruce bud worm, Choristoneura fumiferana (Clem.), in balsam fir, Abies balsamea L., stands was significantly reduced following aerial applications of commercial Bacillus thuringiensis (B.t.) (Thuricide 16B®, 24B and 32BX and Dipel 85®). Treatment with Dipel vehicle (Dipel 88® without B.t.) did not affect larval biomass. Biomass reduction following the Thuricide treatment was directly related to feeding activity. These findings support published observations on the long-term effect of B.t. on budworm populations.

Résumé

Des épandages aériens de préparations commerciales de Bacillus thurigiensis (B.t.) (Thuricide 16B®, 24B et 32BX et Dipel 85®) ont réussi à réduire nettement la biomasse des larves de la tordeuse des bourgeons de l'épinette (Choristoneura fumiferana) dans des peuplements de sapin baumier (Abies balsamea L.). Le traitement avec le véhicule seulement (Dipel 88® sans B.t.) a été sans effet sur la biomasse. La réduction de celle-ci à la suite du traitement au Thuricide est directement reliée à l'activité d'alimentation. Les résultats obtenus renforcent d'autres observations publiées concernant les effets à longue échéance de B.t. sur les populations de la tordeuse.

Type
Articles
Information
The Canadian Entomologist , Volume 115 , Issue 4 , April 1983 , pp. 431 - 434
Copyright
Copyright © Entomological Society of Canada 1983

References

Angus, T. A. 1965. Mortality due to Bacillus thuringiensis in post-larval stages of some Lepidoptera. Proc. ent. Soc. Ont. 95: 133–134.Google Scholar
Asano, S., Sasakibara, H., and Nakamura, K.. 1976. Susceptibility of the pine caterpillar, Dendrolimus spectabilis Butler (Lepidoptera, Lasiocampidae) to Bacillus thuringiensis. Kontyû 44: 217–227.Google Scholar
Burgerjon, A. and Grison, P.. 1971. Effects of Bacillus thuringiensis Berliner (Crystaux-spores et toxine thermostable) sur le potential biotique de Zeiraphera diniana Gn. A. Sci. For. 28: 391–401.Google Scholar
Dimond, J. B. and Spies, C. J. III. 1981. Two-year effecs of a Bacillus thuringiensis treatment on spruce budworm, Choristoneura fumiferana (Lepidoptera: Tortricidae). Can. Ent. 113: 661–663.CrossRefGoogle Scholar
Hamed, A. R. von. 1978. Zur Wirkung von Bacillus thuringiensis auf Yponomeata evonymellus (L.) und Y. padellus (L.) (Lep., Yponomeutidae). Z. angew. Ent. 85: 394–412.CrossRefGoogle Scholar
Morris, O. N. 1969. Susceptibility of several forest insects of British Columbia to commercially produced Bacillus thuringiensis. II. Laboratory and field pathogenicity tests. J. invert. Path. 13: 285–295.CrossRefGoogle ScholarPubMed
Morris, O. N. 1973. Dosage mortality studies with commercial Bacillus thuringiensis sprayed in a modified Potter's tower against some forest insects. J. invert. Path. 22: 108–114.CrossRefGoogle Scholar
Morris, O. N. 1977. Long term study of the effectiveness of aerial application of Bacillus thuringiensis – acephate combinations against the spruce budworm, Choristoneura fumiferana (Lepidoptera: Tortricidae). Can. Ent. 109: 1239–1248.CrossRefGoogle Scholar
Morris, O. N. and Armstrong, J. A.. 1975. Preliminary field trials with Bacillus thuringiensis chemical insecticide combinations in the integrated contrrl of the spruce budworm, Choristoneura fumiferana (Lepidoptera: Tortricidae). Can. Ent. 107: 1281–1288.CrossRefGoogle Scholar
Morris, O. N., Hildebrand, M. J., and Moore, A.. 1981. Comparative effectiveness of three commercial formulations of Bacillus thuringiensis for control of the spruce budworm, Choristoneura fumiferana (Clem.). Can. For. Serv. Rep. FPM-X-47.Google Scholar
Paré, F., Huot, L., Perron, J. M., and Clouther, M.. 1977. Action du jeûne et de Bacillus thuringiensis Berliner sur les protéines plasmatiques de Choristoneura fumiferna (Clem.) (Lepidoptera: Tortricidae). Can. J. Zool. 55: 543–552.CrossRefGoogle Scholar
Reulle, P., Nef, L., and Lebrun, P.. 1977. Etude en laboratoire de l'efficacité prolongée de Bacillus thuringiensis sur Euproctis chrysorrhoea. Parasitica 33: 127–137.Google Scholar
Smirnoff, N. A. and Valéro, J. R.. 1980. Metabolic exploration in insects: variations in potassium and calcium levels in insects during various infections. J. invert, Path. 35: 311–313.CrossRefGoogle Scholar