Weather and insects in a changing climate


  • V. Nealis Natural Resources Canada-Pacific Forestry Centre, Victoria, BC V8R 2H9




Chuine, I. 2010. Why does phenology drive species distribution? Philosophical Transactions of the Royal Society B, 365: 3149–3160. doi:10.1098/rstb. 2010.0142.

Dodds, K.A., Clancy, K.M., Leyva, K.J., Greenberg, D., and Price, P.W. 1996. Effects of Douglas-fir foliage age class on western spruce budworm oviposition choice and larval performance. Great Basin Naturalist, 56: 135–141.

Gilbert, N. and Raworth, D.A. 1996. Insect and temperature – a general theory. The Canadian Entomologist, 128: 1–13.

Greenbank, D.O. 1956. The role of climate and dispersal in the initiation of outbreaks of the spruce budworm in New Brunswick I. the role of climate. Canadian Journal of Zoology, 34: 453–476.

Logan, J.A. and Powell, J.A. 2001. Ghost forests, global warming, and the mountain pine beetle (Coleoptera: Scolytidae). American Entomologist, 47: 160–173.

Maclauchlan, L.E., Daniels, L.D., Hodge, J.C., and Brookes, J.E. 2018. Characterization of western spruce budworm outbreak regions in the British Columbia Interior. Canadian Journal of Forest Research, 48: 783–802.

Mattson, W.J., Haack, R.A., Lawrence, R.K., and Slocum, S.S. 1991. Considering the nutritional ecology of the spruce budworm in its management. Forest Ecology and Management, 39: 183–210.

McKenney, D.W., Pedlar, J.H., Lawrence, K., Campbell, K., and Hutchinson, M.F. 2007. Beyond traditional hardiness zones: using climate envelopes to map plant range limits. BioScience, 57: 929–937.

Nealis, V.G. 2005. Diapause and voltinism in western and 2-year cycle spruce budworms (Lepidoptera: Tortricidae) and their hybrid progeny. The Canadian Entomologist, 137: 584–597.

Nealis, V.G. 2009. Still invasive after all these years: keeping gypsy moth out of British Columbia. The Forestry Chronicle, 85: 593–603.

Nealis, V.G. 2012. The phenological window for western spruce budworm: seasonal decline in resource quality. Agricultural and Forest Entomology, 14: 340–347.

Nealis, V.G. 2016. Comparative ecology of conifer-feeding spruce budworms (Lepidoptera: Tortricidae). The Canadian Entomologist, 148: S33–S57.

Nealis, V.G., DeMerchant, I., Langor, D., Noseworthy, M.K., Pohl, K., Shanks, E., Turnquist, R., and Waring, V. 2016. Historical occurrence of alien arthropods and pathogens on trees in Canada. Canadian Journal of Forest Research, 46: 1–9.

Nealis, V.G. and Nault, J.R. 2005. Seasonal changes in foliar terpenes indicate suitability of Douglas-fir buds for western spruce budworm. Journal of Chemical Ecology, 31: 683–696.

Nealis, V.G. and Régnière, J. 2004. Insect–host relationships influencing disturbance by the spruce budworm in a boreal mixedwood forest. Canadian Journal of Forest Research, 34: 1870–1882.

Nealis, V.G. and Régnière, J. 2009. Risk of dispersal in western spruce budworm. Agricultural and Forest Entomology, 11: 213–223.

Nealis, V.G. and Régnière, J. 2014. An individual-based phenology model for western spruce budworm (Lepidoptera: Tortricidae). The Canadian Entomologist, 146: 305–320.

Nealis, V.G. and Régnière, J. 2016. Why western spruce budworms travel so far for the winter. Ecological Entomology, 41: 633–641.

Pureswaran, D.S., De Grandpré, L., Paré, D., Taylor, A., Barrette, M., Morin, H., Régnière, J., and Kneeshaw, D.D. 2015. Climate-induced changes in host tree- insect phenology may drive ecological state-shift in boreal forests. Ecology, 96: 1480–1491.

Quiring, D., Ostaff, D., Hartling, L., Lavigne, D., Moore, K., and DeMerchant, I. 2008. Temperature and plant hardiness zone influence distribution of balsam wooly adelgid damage in Atlantic Canada. The Forestry Chronicle, 84: 558–562.

Régnière, J. and Nealis, V.G. 2018. Two sides of a coin: host-plant synchrony fitness trade-offs in the population dynamics of the western spruce budworm. Insect Science, 25: 117–126.

Régnière, J. and Nealis, V.G. 2019a. Influence of temperature on historic and future population fitness of the western spruce budworm, Choristoneura occidentalis. International Journal of Pest Management, 65: 228–243.

Régnière, J. and Nealis, V.G. 2019b. Density dependence of egg recruitment and moth dispersal in spruce budworms. Forests, 10(8): 706. f10080706.

Régnière, J., Nealis, V., and Porter, K. 2009. Climate suitability and management of the gypsy moth invasion into Canada. Biological Invasions, 11: 135–148.

Régnière, J., Powell, J., Bentz, B. and Nealis, V. 2012a. Effects of temperature on development, survival and reproduction of insects: experimental design, data analysis and modelling. Journal of Insect Physiology, 58: 634–647.

Régnière, J., St-Amant, R., and Duval, P. 2012b. Predicting insect distributions under climate change from physiological responses: spruce budworm as an example. Biological Invasions, 14: 1571–1586.

Royama, T. 1984. Population dynamics of the spruce budworm Choristoneura fumiferana. Ecological Monographs, 54: 429–462.

Safranyik, L., Carroll, A.L., Régnière, J., Langor, D.W., Riel, W.G., Shore, T.L., Peter, B., Cooke, B.J., Nealis, V.G., and Taylor, S.W. 2010. Potential for range expansion of mountain pine beetle into the boreal forest of North America. The Canadian Entomologist, 142: 415–442.

Thomson, A.J. and Benton, R. 2007. A 90-year sea warming trend explains outbreak patterns of western spruce budworm in Vancouver Island. The Forestry Chronicle, 83: 867–869.

Thomson, A.J., Shepherd, R.F., Harris, J.W.E., and Silversides, R.H. 1984. Relating weather to outbreaks of western spruce budworm, Choristoneura occidentalis (Lepidoptera: Tortricidae), in British Columbia. The Canadian Entomologist, 116: 375–381.

Uvarov, B.P. 1931. Insects and Climate. Transactions of the Entomological Society of London, 79: 1–232.

Wellington, W.G. 1950. Effects of radiation on the temperatures of insectan habitats. Scientific Agriculture, 30: 209–234.

Wellington, W.G., Fettes, J.J., Turner, K.B., and Belyea, R.M. 1950. Physical and biological indicators of the development of outbreaks of the spruce budworm. Canadian Journal of Research D, 28: 308–331.

White, T.C.R. 1993. The inadequate environment. Nitrogen and the abundance of animals. Springer-Verlag, Berlin.

White, T.C.R. 2018. An alternative hypothesis explains outbreaks of conifer-feeding budworms of the genus Choristoneura (Lepidoptera: Tortricidae) in Canada. Journal of Applied Entomology, 142(8): 725–730. doi: 10.1111/jen.12523.