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Distribution, species composition, and incidence of egg parasitoids of the forest tent caterpillar (Lepidoptera: Lasiocampidae), during a widespread outbreak in the Canadian prairies

Published online by Cambridge University Press:  03 January 2012

Daryl J. Williams  and
David W. Langor
Daryl J. Williams*
Affiliation:
Northern Forestry Centre, Canadian Forest Service, Natural Resources Canada 5320-122 Street NW, Edmonton, Alberta, Canada T6H 4S7
David W. Langor
Affiliation:
Northern Forestry Centre, Canadian Forest Service, Natural Resources Canada 5320-122 Street NW, Edmonton, Alberta, Canada T6H 4S7
*
1Corresponding author (e-mail: Daryl.Williams@NRCan-RNCan.gc.ca).
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Abstract

Egg bands of the forest tent caterpillar, Malacosoma disstria Hübner, were sampled across a wide area of the Canadian prairie provinces during a large-scale outbreak in 1989 and 1990 to examine the incidence and distribution of egg parasitoids (Hymenoptera). Data on the parasitoid species found and the incidence and frequency of parasitism in three habitat types is presented. Three species of egg parasitoids were recovered, Telenomus clisiocampae Riley (Scelionidae), Ooencyrtus clisiocampae (Ashmead) (Encyrtidae), and Baryscapus malacosomae (Girault) (Eulophidae). Differences in the number of species occurring per egg band and the percent of parasitism were found among habitat types. These differences are correlated to the amount of spumaline cover on egg bands, which also varied among habitat types.

Résumé

Des échantillons de bandes d'œufs de la livrée des forêts, Malacosoma disstria Hübner, prélevés sur un large territoire dans les provinces canadiennes des Prairies durant une épidémie de grande envergure en 1989 et 1990 ont servi à déterminer l'incidence et la répartition des parasitoïdes (Hymenoptera) des œufs. Nous présentons les données sur les espèces de parasitoïdes retrouvées et sur l'incidence et la répartition du parasitisme dans trois types d'habitats. Trois espèces de parasitoïdes des œufs sont présentes, Telenomus clisiocampae Riley (Scelionidae), Ooencyrtus clisiocampae (Ashmead) (Encyrtidae) et Baryscapus malacosomae (Girault) (Eulophidae). Il existe des différences dans le nombre d'espèces par bande d'œufs et le % de parasitisme en fonction des types d'habitats. Ces différences sont en corrélation avec la quantité de spumaline qui recouvre les bandes d'œufs, qui varie aussi selon les types d'habitats.

[Traduit par la Rédaction]

Type
Biodiversity & Evolution
Information
The Canadian Entomologist , Volume 143 , Issue 3 , June 2011 , pp. 272 - 278
Copyright
Copyright © Entomological Society of Canada 2011

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References

Cerezke, H.F.Gates, H.S. 1992. Forest insect and disease conditions in Alberta, Saskatchewan, Manitoba, and the Northwest Territories in 1991. Canadian Forest Service, Northern Forestry Centre, Edmonton, Alberta. Information Report NOR-X-325.Google Scholar
Cerezke, H.F.Emond, F.J.Gates, H.S. 1991. Forest insect and disease conditions in Alberta, Saskatchewan, Manitoba, and the Northwest Territories in 1990 and predictions for 1991. Canadian Forest Service, Northern Forestry Centre, Edmonton, Alberta. Information Report NOR-X-318.Google Scholar
Darling, C.D.Johnson, N.F. 1982. Egg mortality in the eastern tent caterpillar, Malacosoma americanum (Lepidoptera: Lasiocampidae): the role of accessory gland secretions and egg mass shape. Proceedings of the Entomological Society of Washington, 84: 448–460.Google Scholar
Fitzgerald, T.D. 1995. The tent caterpillars. Cornell University Press, Ithaca, New York.Google Scholar
Hildahl, V.Campbell, A.E. 1975. Forest tent caterpillar in the Prairie Provinces. Canadian Forest Service, Northern Forestry Centre, Edmonton, Alberta. Information Report NOR-X-185.Google Scholar
Hiratsuka, Y.Cerezke, H.F.Petty, J. 1980. Forest insect and disease conditions in Alberta, Saskatchewan, Manitoba, and the Northwest Territories in 1979 and predictions for 1980. Canadian Forest Service, Northern Forestry Centre, Edmonton, Alberta. Information Report NOR-X-225.Google Scholar
Hiratsuka, Y.Langor, D.W.Crane, P. 2004. A field guide to forest insects and diseases of the Prairie Provinces. 2nd edition. Natural Resources Canada, Canadian Forest Service, Northern Forestry Centre, Edmonton, Alberta. Special Report 3.Google Scholar
Hodson, A.C. 1939. Biological notes on the egg parasites of Malacosoma disstria Hbn. Annals of the Entomological Society of America, 32: 131–136.CrossRefGoogle Scholar
Langston, R.I. 1957. A synopsis of hymenopterous parasites of Malacosoma in California (Lepidoptera: Lasiocampdae). University of California Publications in Entomology, 14: 1–50.Google Scholar
McLeod, J.H.Ayre, G.L. 1956. Parasites of tent caterpillars (Lepidoptera: Lasiocampidae) in the lower Fraser valley of British Columbia, Canada. 8th Pacific Science Congress, Proceedings, 3A: 1547–1560.Google Scholar
Parry, D. 1995. Larval and pupal parasitism of the forest tent caterpillar in Alberta, Canada. The Canadian Entomologist, 127: 877–893. doi:10.4039/Ent127877-6.CrossRefGoogle Scholar
Parry, D.Spence, J.R.Volney, W.J.A. 1997. The response of natural enemies to experimentally increased populations of the forest tent caterpillar. Ecological Entomology, 22: 97–108. doi:10.1046/j.1365-2311.1997.00022.x.CrossRefGoogle Scholar
Robins, J.K.Patterson, V.B.Still, G.N.Mortensen, E.J.Gautreau, R.C.Tidsbury, J. et al. 1972. Annual district reports: Forest insect and disease survey; Prairie Region, 1972. Canadian Forest Service, Northern Forestry Centre, Edmonton, Alberta. Information Report NOR-X-54.Google Scholar
SAS Institute Inc. 2009. SAS OnlineDoc, version 9.1. SAS Institute Inc. Cary, North Carolina.Google Scholar
Smith, J.D.Goyer, R.A. 1985. Rates of parasitism and sex ratios of Ablerus clisiocampae and Ooencyrtus clisiocampae egg parasites of the forest tent caterpillar, Malacosoma disstria in southern Louisiana. Journal of Entomological Science, 20: 189–193.CrossRefGoogle Scholar
Smith, S.M.Strom, K.B. 1993. Oviposition by the forest tent caterpillar (Lepidoptera: Lasiocampidae) and acceptability of its eggs to Trichogramma minutum (Hymenoptera: Trichogrammatidae). Environmental Entomology, 22: 1375–1382.CrossRefGoogle Scholar
Stacey, L.Roe, R.Williams, K. 1975. Mortality of eggs and pharate larvae of the eastern tent caterpillar, Malacosoma americana (F.) (Lepidoptera: Lasiocampidae). Journal of the Kansas Entomological Society, 48: 521–523.Google Scholar
Williams, D.J.M.Parry, D.Langor, D.W. 1996. Sampling and identification of forest tent caterpillar parasitoids in the Prairie Provinces. Canadian Forest Service, Northern Forestry Centre, Edmonton, Alberta. Information Report NOR-X-345.Google Scholar
Witter, J.A.Kuhlman, H.M. 1972. A review of the parasites and predators of tent caterpillars (Malacosoma spp.) in North America. Agricultural Experiment Station, University of Minnesota, St. Paul, Minnesota. Technical Bulletin 289.Google Scholar
Witter, J.A.Kuhlman, H.M. 1979. The parasite complex of the forest tent caterpillar in northern Minnesota. Environmental Entomology, 8: 723–731.CrossRefGoogle Scholar