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Epizootic occurrence of Entomophaga maimaiga at the leading edge of an expanding population of the gypsy moth (Lepidoptera: Lymantriidae) in north-central Ontario

Published online by Cambridge University Press:  02 April 2012

Yannick Villedieu  and
Kees van Frankenhuyzen
Yannick Villedieu
Affiliation:
École Supérieure d'Agriculture, 55 rue Rabelais – BP 748, 49007 Angers, France
Kees van Frankenhuyzen*
Affiliation:
Great Lakes Forestry Centre, Canadian Forestry Service, Natural Resources Canada, 1219 Queen Street East, Sault Ste. Marie, Ontario, Canada P6A 2E5
*
1Corresponding author (e-mail: kvanfran@nrcan.gc.ca).
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Extract

Ever since its entry from New York State in the late 1960s, the gypsy moth, Lymantria dispar (L.) (Lepidoptera: Lymantriidae), has continued to expand its distribution in Ontario to the north and west (Nealis and Erb 1993). Outbreaks were recorded for the first time in the Sudbury – North Bay region in the early 1990s, by which time there was evidence of resident populations extending along the north shore of Lake Huron as far west as Lake Superior. The population expansion along the north shore is characterized by a patchy occurrence of small outbreaks, which typically last for a few years and then disappear (Annual Forest Health Reports, Great Lakes Forestry Centre, http://www.glfc.cfs.nrcan.gc.ca/foresthealth/index_e.html). Nealis et al. (1999) found that winter weather, parasitoids, and the gypsy-moth-specific fungal pathogen Entomophaga maimaiga Humber, Shimazu et Soper (Zygomycetes: Entomophthorales) were the most prominent sources of mortality in those transient outbreaks.

Type
Articles
Information
The Canadian Entomologist , Volume 136 , Issue 6 , December 2004 , pp. 875 - 878
Copyright
Copyright © Entomological Society of Canada 2004

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References

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