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Determining the instar of mountain pine beetle (Coleoptera: Curculionidae) larvae by the width of their head capsules

Published online by Cambridge University Press:  17 October 2014

K.P. Bleiker*
Affiliation:
Canadian Forest Service, Natural Resources Canada – Pacific Forestry Centre, 506 West Burnside Road, Victoria, British Columbia, Canada V8Z 1M5
J. Régnière
Affiliation:
Canadian Forest Service, Natural Resources Canada – Laurentian Forestry Centre, 1055 du P.E.P.S., Sainte-Foy Quebec, Canada G1V 4C7
*
1 Corresponding author (e-mail: Katherine.Bleiker@nrcan.gc.ca).

Abstract

Cut-points to distinguish larval instars of the mountain pine beetle (MPB), Dendroctonus ponderosae Hopkins (Coleoptera: Curculionidae), from the measurement of head-capsule width were determined using a maximum likelihood approach. The cut-points that distinguish the four instars are suitable to classify individual larvae from field populations collected from lodgepole pine Pinus contorta var. latifolia Engelmann (Pinaceae) or jack pine (P. banksiana Lambert)×lodgepole pine hybrids throughout most of the beetle’s current range in British Columbia and Alberta, Canada. The ability to designate the instar of field-collected larvae will facilitate the calibration of phenology and populations models that assess the climatic suitability of habitats and the potential for MPB to continue expanding its range.

Type
Techniques – NOTE
Copyright
© Her Majesty the Queen in Right of Canada as represented by the Ministry of Natural Resources 2014 

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Footnotes

Subject editor: Jon Sweeney

References

Amman, G.D. 1982. Characteristics of mountain pine beetles reared in four pine hosts. Environmental Entomology, 11: 590593.CrossRefGoogle Scholar
Amman, G.D. and Cole, W.E. 1983. Mountain pine beetle dynamics in lodgepole pine forests. Part II: population dynamics. General Technical Report INT-145, United States Department Agriculture Forest Service, Intermountain Forest and Range Experiment Station, Ogden, Utah, United States of America.Google Scholar
Bentz, B.J., Bracewell, R.R., Mock, K.E., and Pfrender, M.E. 2011. Genetic architecture and phenotypic plasticity of thermally-regulated traits in an eruptive species, Dendroctonus ponderosae . Evolutionary Ecology, 25: 12691288.Google Scholar
Bentz, B.J., Logan, J.A., and Vandygriff, J.C. 2001. Latitudinal variation in Dendroctonus ponderosae (Coleoptera: Scolytidae) development time and adult size. The Canadian Entomologist, 133: 375387.Google Scholar
Bleiker, K.P., Carroll, A.L., and Smith, G.D. 2011. Mountain pine beetle range expansion: assessing the threat to Canada’s boreal forest by evaluating the endemic niche. Natural Resources Canada, Ottawa, Ontario, Canada.Google Scholar
Bleiker, K.P., O’Brien, M.R., Smith, G.D., and Carroll, A.L. 2014. Characterisation of attacks made by the mountain pine beetle (Coleoptera: Curculionidae) during its endemic population phase. The Canadian Entomologist, 146: 271284.CrossRefGoogle Scholar
Bleiker, K.P. and Six, D.L. 2007. Dietary benefits of fungal associates to an eruptive herbivore: potential implications of multiple associates on host population dynamics. Environmental Entomology, 36: 13841396.CrossRefGoogle Scholar
Cerezke, H.F. 1995. Egg gallery, brood production, and adult characteristics of mountain pine beetle, Dendroctonus ponderosae Hopkins (Coleoptera: Scolytidae), in three pine hosts. The Canadian Entomologist, 127: 955965.CrossRefGoogle Scholar
Critchfield, W.B. 1985. The late quaternary history of lodgepole and jack pines. Canadian Journal of Forest Research, 15: 749772.Google Scholar
Daly, H.G. 1985. Insect morphometrics. Annual Review of Entomology, 30: 415438.CrossRefGoogle Scholar
Flaherty, L., Régnière, J., and Sweeney, J. 2012. Number instars and sexual dimorphism of Tetropium fuscum (Coleoptera: Cerambycidae) larvae determined by maximum likelihood. The Canadian Entomologist, 144: 720726.CrossRefGoogle Scholar
Hutchinson, G.E. and Tongring, N. 1984. The possible adaptive significance of the Brooks-Dyar rule. Journal of Theoretical Biology, 106: 437439.CrossRefGoogle Scholar
Langor, D.W., Spence, J.R., and Pohl, G.R. 1990. Host effects on fertility and reproductive success of Dendroctonus ponderosae Hopkins (Coleoptera: Scolytinae). Evolution, 44: 609618.CrossRefGoogle Scholar
Logan, J.A., Bentz, B.J., Vandygriff, J.C., and Turner, D.L. 1998. General program for determining instar distributions from headcapsule widths: example analysis of mountain pine beetle (Coleoptera: Scolytidae) data. Environmental Entomology, 27: 555563.Google Scholar
Régnière, J., Powell, J., Bentz, B., and Nealis, V. 2012. Effects of temperature on development, survival and reproduction of insects: experimental design, data analysis and modeling. Journal of Insect Physiology, 58: 634647.Google Scholar
Reid, R.W. 1962. Biology of the mountain pine beetle, Dendroctonus monticolae Hopkins, in the East Kootenay Region of British Columbia I. Life cycle, brood development, and flight periods. The Canadian Entomologist, 94: 531538.CrossRefGoogle Scholar
Safranyik, L. and Carroll, A.L. 2006. The biology and epidemiology of the mountain pine beetle in lodgepole pine forests. In The mountain pine beetle: a synthesis of its biology, management and impacts on lodgepole pine. Edited by L. Safranyik and B. Wilson, Natural Resources Canada, Canadian Forest Service, Pacific Forestry Centre, Victoria, British Columbia, Canada. Pp. 366.Google Scholar
Safranyik, L., Carroll, A.L., Régnière, J., Langor, D.W., Riel, W.G., Peter, B., et al. 2010. Potential for range expansion of mountain pine beetle into the boreal forest of North America. The Canadian Entomologist, 142: 415442.Google Scholar
Safranyik, L. and Linton, D.A. 1983. Brood production by three spp. of Dendroctonus (Coleoptera: Scolytidae) in bolts from host and non-host trees. Journal of the Entomological Society of British Columbia, 80: 1013.Google Scholar
Walton, A. 2012. Provincial-level projection of the current mountain pine beetle outbreak: update of the infestation projection based on the provincial aerial overview surveys of forest health conducted from 1999 through 2011 and the BCMPB model (year 9). British Columbia Ministry of Forests, Lands and Natural Resources Operations, Victoria, British Columbia, Canada.Google Scholar