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EFFECTS OF PLEISTOPHORA SCHUBERGI (MICROSPORIDA) ON THE SPRUCE BUDWORM, CHORISTONEURA FUMIFERANA (LEPIODPTERA: TORTRICIDAE)

Published online by Cambridge University Press:  31 May 2012

G. G. Wilson
G. G. Wilson
Affiliation:
Forest Pest Management Institute, Canadian Forestry Service, Sault Ste. Marie, Ontario P6A 5M7
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Abstract

Spores of the microsporidium Pleistophora schubergi were fed to second- and fifth-instar larvae of the spruce budworm, Choristoneura fumiferana. A treatment of 2 × 108 spores applied to the surface of the host's diet resulted in 100% mortality to second- and 60% to fifth-instar larvae. Suceptibility of the host to the parasite decreased as the larvae became older. Other effects on host development were not significant at the dosages tested.

Résumé

On a nourri des tordeuses des bourgeons de l'épinette Choristoneura fumiferana des deuxième et cinquième stades larvaires, de spores de la microsporidie Pleistophora schubergi. Une dose de 2 × 108 spores appliquée sur la nourriture a causé une mortalité de 100% et de 60%, respectivement, chez les deuxième et cinquième stades. La susceptibilité envers le parasite diminue avec l'âge. Les autres effets sur le développement de l'hôte n'étaient pas notables aux doses utilisées.

Type
Articles
Information
The Canadian Entomologist , Volume 114 , Issue 1 , January 1982 , pp. 81 - 83
Copyright
Copyright © Entomological Society of Canada 1982

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References

Grisdale, D. 1973. Large volume preparation and processing of a synthetic diet for insect rearing. Can. Ent. 105: 1553–1557.Google Scholar
Kaya, H.K. 1973. Pathogenicity of Pleistophora schubergi to larvae of the orange-striped oakworm and other lepidopterous insects. J. invert. Path. 22: 356–358.CrossRefGoogle Scholar
Kaya, H.K. 1975. Persistence of spores of Pleistophora schubergi (Cnidospora: Microsporida) in the field, and their application in microbial control. J. invert. Path. 26: 329–332.CrossRefGoogle Scholar
Simchuk, P.A. 1980. The effect of microsporidians of Pleistophora carpocapsae and P. schubergi on the growth, development and mortality of caterpillars of Malacosoma neustria silkworm. Parazitologiya (Leningr.) 14: 158–163.Google Scholar
Wilson, G.G. 1975. Occurrence of Thelohania sp. and Pleistophora sp. (Microsporida: Nosematidae) in Choristoneura fumiferana (Lepidoptera: Tortricidae). Can. J. Zool. 53: 1799–1802.CrossRefGoogle Scholar
Wilson, G.G. 1977. Effects of the microsporidia Nosema disstriae and Pleistophora schubergi on the survival of the forest tent caterpillar, Malacosoma disstria (Lepidoptera: Lasiocampidae). Can. Ent. 109: 1021–1022.CrossRefGoogle Scholar
Wilson, G.G. 1978. Detrimental effects of feeding Pleistophora schubergi (Microsporida) to spruce budworm (Choristoneura fumiferana) naturally infected with Nosema fumiferanae. Can. J. Zool. 56: 578–580.CrossRefGoogle Scholar
Wilson, G.G. 1980. Persistence of microsporidia in populations of the spruce budworm and forest tent caterpillar. Can. For. Serv., Sault Ste. Marie, Inf. Rep.FPM-X-39.Google Scholar