caa a22 4500 388092823 CHVBK 20180307125256.0 cr unu---uuuuu 161130e199908 xx s 000 0 eng 10.4039/Ent131507-4 doi S0008347X00010129 pii (NATIONALLICENCE)cambridge-10.4039/Ent131507-4 NATURAL MORTALITY OF THE GYPSY MOTH ALONG A GRADIENT OF INFESTATION [Elektronische Daten] Natural mortality of gypsy moth [Lymantria dispar (L.) (Lepidoptera: Lymantriidae)] eggs, larvae, and pupae was examined at several locations along a gradient of infestation in Ontario, Canada. Most mortality of eggs was the result of exposure to winter weather. This mortality was mitigated in egg masses located near ground level where they benefited from snow cover. At least six species of parasitoids were found attacking gypsy moth larvae and pupae. The most common species were present in the same rank order of abundance at all sites. Identified pathogens were also present in most sites but their relative abundance varied greatly. The mycopathogen Entomophaga maimaiga Humber, Shimazu & Soper (Zygomycetes: Entomophthorales) was found at all sites and usually was responsible for the highest levels of observed, single-source mortality at the site. Copyright © Entomological Society of Canada 1999 Nealis V.G. Pacific Forestry Centre, Canadian Forest Service, Natural Resources Canada, 506 W Burnside Road, Victoria, British Columbia, Canada V8Z 1M5 Roden P.M. Great Lakes Forestry Centre, Canadian Forest Service, Natural Resources Canada, P.O. Box 490, Sault Ste. Marie, Ontario, Canada P6A 5M7 Ortiz D.A. Great Lakes Forestry Centre, Canadian Forest Service, Natural Resources Canada, P.O. Box 490, Sault Ste. Marie, Ontario, Canada P6A 5M7 The Canadian Entomologist Cambridge University Press 131/4(1999-08), 507-519 0008-347X 131:4<507 1999 131 TCE https://doi.org/10.4039/Ent131507-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.4039/Ent131507-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nealis V.G. Pacific Forestry Centre, Canadian Forest Service, Natural Resources Canada, 506 W Burnside Road, Victoria, British Columbia, Canada V8Z 1M5 NATIONALLICENCE 700 1- Roden P.M. Great Lakes Forestry Centre, Canadian Forest Service, Natural Resources Canada, P.O. Box 490, Sault Ste. Marie, Ontario, Canada P6A 5M7 NATIONALLICENCE 700 1- Ortiz D.A. Great Lakes Forestry Centre, Canadian Forest Service, Natural Resources Canada, P.O. Box 490, Sault Ste. Marie, Ontario, Canada P6A 5M7 NATIONALLICENCE 773 0- The Canadian Entomologist Cambridge University Press 131/4(1999-08), 507-519 0008-347X 131:4<507 1999 131 TCE CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge