Cynthia Scott-Dupree

Position / Title



(519) 824-4120 Ext.52477


Staff Type


Research Category

Plant and Environmental Health
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B.Sc. Honours from Brandon University; Master in Pest Management (MPM) and PhD from Simon Fraser University


Cynthia Scott-Dupree is a Professor and Bayer CropScience Chair in Sustainable Pest Management (2014-2019) in the School of Environmental Sciences (SES) at the University of Guelph. She has been a faculty member first in the Dept of Environmental Biology and the SES there since 1986. She received her Master of Pest Management (1983) and her Ph.D. (1986) from the Dept. of Biological Sciences at Simon Fraser University under the supervision of Dr. Mark Winston. Dr. Scott-Dupree has supervised 40 graduate students, has edited 3 books and 5 book chapters, and published 67 refereed scientific papers, 37 refereed proceedings papers, 80 technical reports and 30 extension publications.

Cynthia's website for her lab can be found at:

Her current research interests include sustainable management (IPM) of insect crop pests using environmentally compatible control methods in horticultural, field and greenhouse cropping systems, management of invasive alien insect species, impact of agro-ecosystems on non-target organisms, including beneficial insects such as honey bees, bumble bees, native bees and natural enemies of insect pests (i.e., biological control agents primarily for greenhouse IPM) and the development of standardized methods for assessing the risk of insecticide exposure to non-Apis bees (i.e., bumble bees and leafcutter bees). Cynthia has been involved with method development for studying the impact of pesticides in agroecosystems on bee pollinators in lab and field situations. Since the early 90’s, she has been involved with the supervision of large-scale GLP and other field studies in Ontario – looking at the impact of insecticides on honey bees, bumble bees and leafcutter bees.

Recent Publications

  • Hewitt, L.C., L. Shipp, R. Buitenhuis and C. Scott-Dupree. 2015. Seasonal climatic variations  influence the efficacy of predatory mites used for control of wester flower thrips in greenhouse ornamental crops. Exp. Appl. Acarol. 65: 435-450.
  • Ayyanath, M.-M., C. D. Scott-Dupree and G.C. Cutler. 2015. Effect of low doses of precocene on reproduction and gene expression in green peach aphid. Chemosphere 128: 245-25.
  • Buitenhuis, R., G. Murphy, L. Shipp and C. Scott-Dupree. 2015. Amblyseius swirskii in greenhouse production systems: a floricultural perspective. Exp. Appl. Acarol. 65 (4): 451-464.
  • Buitenhuis, R., L. Shipp, C. Scott-Dupree, A. Brommit and W. Lee. 2014.  Host plant effects on the searching behaviour of Amblyseius swirskii (Acari: Phytoseiidae). Experimental and Applied Acarology 62: 171-180.
  • Ayyanath, M-M., G. C. Cutler, C. D. Scott-Dupree, B. Prithiviraj, S. Kandasamy and K. Prithiviraj. 2014. Gene expression during imidacloprid-induced hormesis in green peach  aphid. Dose Response DOI 10.2203/dose-response.13-057.
  • Grigg-McGuffin, K., I.M. Scott, S. Bellerose, G. Chouinard, D. Cormier and C.D. Scott-Dupree. 2014. Susceptibility in field populations of codling moth, Cydia pomonella (L.) (Lepidoptera: Tortricidae) in Ontario and Quebec apple orchards to a selection of insecticides. Pest Management Science On-Line Library - DOI 10.1002/ps3787.
  • Frewin, A.J. C. Scott-Dupree, G. Murphy and R. Hanner. 2014. Demographic Trends in Mixed Bemisia tabaci (Hemiptera: Aleyrodidae) Cryptic Species Populations in Commercial Poinsettia Under Biological Control- and Insecticide- Based Management.  Journal of Economic Entomology 107: 1150-1155.
  • Cutler, G.C. and C.D. Scott-Dupree. 2014. A field study examining the effects of exposure to neonicotinoid seed-treated corn on commercial bumble bee colonies. J. of Econ. Entomology 23: 1755-1763.
  • Cutler, G.C., C. Scott-Dupree, M. Sultan, A. McFarlane and L. Brewer. 2014. A large-scale field study examining effects of exposure to clothianidin seed-treated canola on honey bee colony health, development, and overwintering success. PeerJ.
  • Gariepy, T., H. Fraser and C. Scott-Dupree. 2013. Brown marmorated stinkbug in Canada: recent establishment, occurrence and pest status in southern Ontario. Can. Entomol. On-line. DOI 10.4039/tce.2014.4

Research Area

sustainable agriculture, entomology, environmental toxicology, non- target impacts, IPM