Dr. Paul G. Fields

Image Paul Fields
Retired - Research Scientist

I study the ecology and physiology of insects that infest stored products.

Current research and/or projects

Pests of Peas: This project focuses on the bean weevil, Acanthoscelides obtectus, which is a quarantine pest in India.

Invasive Alien Species: This project is to model insects that are quarantine insects in Canada. We are working at modeling the growth and development of the khapra beetle (Trogoderma granarium) which is a quarantine in Canada.

Research and/or project statements

There are five main areas to his research program: methyl bromide alternatives in flour mills, extreme temperatures, natural products, insect behaviour and biological control. He has examined: heat, cold, diatomaceous earth, sulfuryl fluoride and the combination of heat, phosphine and carbon dioxide to control insects in flour mills. He has done extensive work on the use of low temperature to control stored product insects. Studies on farms in storage facilities during the winter have demonstrated the ability of insects to become acclimatised to low temperatures. He has examined the use of natural products such as neem, pea extracts and diatomaceous earth to control stored-product insects in bulk grain and in food processing facilities. His work on insect behaviour has focussed on trap design and insect repellants. His work on biological control has focussed on the effects of natural products on stored-grain insect parasitoids and the use of Trichogramma to control Indian meal moth in warehouses and retail stores.

 

Professional activities / interests

Stored Product Entomology Research

Alternatives to the fumigant, methyl bromide

Education and awards

PhD, Biology, Université Laval, 1987

BSc, Biology, McMaster University, 1980

Fellow of Entomological Society of Canada

International experience and/or work

Collaborations with labs in China, Thailand, India, USA and Germany

Key publications

  1. Wilches, D.M., Laird, R.A., Floate, K.D., Fields, P.G., 2016. A review of diapause and tolerance to extreme temperatures in dermestids (Coleoptera). Journal of Stored Products Research 68, 50-62.

    2016 - View publication details

  2. Li, Y.Y., Fields, P.G., Pang, B.P., Floate, K.D. (2016). Effects of tetracycline and rifampicin treatments on the fecundity of the Wolbachia-infected host, Tribolium confusum (Coleoptera: Tenebrionidae). Journal of Economic Entomology, [online] 109(3), 1458-1464. http://dx.doi.org/10.1093/jee/tow067

    2016 - View publication details

  3. Senthilkumar, T., Jayas, D.S., White, N.D.G., Fields, P.G., Gräfenhan, T., 2016. Detection of fungal infection and Ochratoxin A contamination in stored wheat using near-infrared hyperspectral imaging. Journal of Stored Products Research 65, 30-39.

    2016 - View publication details

  4. Jian, F., Jayas, D.S., Fields, P.G., White, N.D.G. (2015). A new method to rapidly detect rusty grain beetle, Cryptolestes ferrugineus (Stephens), in stored grain. Journal of Stored Products Research, [online] 63 1-5. http://dx.doi.org/10.1016/j.jspr.2015.05.004

    2015 - View publication details

  5. Abdelghany, A.Y., Suthisut, D., Fields, P.G. (2015). The effect of diapause and cold acclimation on the cold-hardiness of the warehouse beetle, Trogoderma variabile (Coleoptera: Dermestidae). The Canadian Entomologist, [online] 147(2), 158-168. http://dx.doi.org/10.4039/tce.2014.45

    2015 - View publication details

  6. Li, Y.Y., Fields, P.G., Pang, B.P., Coghlin, P.C., Floate, K.D. (2015). Prevalence and diversity of Wolbachia bacteria infecting insect pests of stored products. Journal of Stored Products Research, [online] 62 93-100. http://dx.doi.org/10.1016/j.jspr.2015.04.009

    2015 - View publication details

  7. Jian, F., Jayas, D.S., White, N.D.G., Fields, P.G., Howe, N. (2015). An evaluation of insect expulsion from wheat samples by microwave treatment for disinfestation. Biosystems Engineering, [online] 130 1-12. http://dx.doi.org/10.1016/j.biosystemseng.2014.11.014

    2015 - View publication details

  8. Arlene-Christina, G.D., Jayas, D.S., Fields, P.G., Jian, F., White, N.D.G., Alagusundaram, K. (2014). Movement of Cryptolestes ferrugineus out of wheat kernels and their mortalities under elevated temperatures. Journal of Stored Products Research, [online] 59 292-298. http://dx.doi.org/10.1016/j.jspr.2014.09.003

    2014 - View publication details

  9. Clark, E.L., Isitt, R., Plettner, E., Fields, P.G., Huber, D.P.W. (2014). An inexpensive feeding bioassay technique for stored-product insects. Journal of Economic Entomology, [online] 107(1), 455-461. http://dx.doi.org/10.1603/EC13283

    2014 - View publication details

  10. Jian, F., Jayas, D.S., White, N.D.G., Fields, P.G. (2014). Carbon dioxide sorption by stored canola under different storage conditions. Journal of Stored Products Research, [online] 59 101-107. http://dx.doi.org/10.1016/j.jspr.2014.05.009

    2014 - View publication details

  11. Purohit, P., Jayas, D.S., Yadav, B.K., Chelladurai, V., Fields, P.G., White, N.D.G. (2013). Microwaves to control Callosobruchus maculatus in stored mung bean (Vigna radiata). Journal of Stored Products Research, [online] 53 19-22. http://dx.doi.org/10.1016/j.jspr.2013.01.002

    2013 - View publication details

  12. Kaliramesh, S., Chelladurai, V., Jayas, D.S., Alagusundaram, K., White, N.D.G., Fields, P.G. (2013). Detection of infestation by Callosobruchus maculatus in mung bean using near-infrared hyperspectral imaging. Journal of Stored Products Research, [online] 52 107-111. http://dx.doi.org/10.1016/j.jspr.2012.12.005

    2013 - View publication details

  13. Hawkin, K.J., Stanbridge, D.M., Fields, P.G. (2013). Sampling Tribolium castaneum and Tribolium confusum in flour mill rollstands. Journal of Stored Products Research, [online] 52 7-11. http://dx.doi.org/10.1016/j.jspr.2012.08.003

    2013 - View publication details

  14. Wijayaratne, L.K.W., Fields, P.G. (2012). Effects of rearing conditions, geographical origin, and selection on larval diapause in the Indianmeal moth, Plodia interpunctella. Journal of Insect Science, [online] 12 http://dx.doi.org/10.1673/031.012.11901

    2012 - View publication details

  15. Wolly Wijayaratne, L.K., Fields, P.G., Arthur, F.H. (2012). Residual efficacy of methoprene for control of tribolium castaneum (Coleoptera: Tenebrionidae) larvae at different temperatures on varnished wood, concrete, and wheat. Journal of Economic Entomology, [online] 105(2), 718-725. http://dx.doi.org/10.1603/EC11375

    2012 - View publication details

  16. Wijayaratne, L.K.W., Fields, P.G., Arthur, F.H. (2012). Effect of methoprene on the progeny production of Tribolium castaneum (Coleoptera: Tenebrionidae). Pest Management Science, [online] 68(2), 217-224. http://dx.doi.org/10.1002/ps.2247

    2012 - View publication details

  17. Hawkin, K.J., Stanbridge, D.M., Fields, P.G. (2011). Sampling Tribolium confusum and Tribolium castaneum in mill and laboratory settings: Differences between strains and species. The Canadian Entomologist, [online] 143(5), 504-517. http://dx.doi.org/10.4039/n11-026

    2011 - View publication details

  18. Suthisut, D., Fields, P.G., Chandrapatya, A. (2011). Fumigant toxicity of essential oils from three Thai plants (Zingiberaceae) and their major compounds against Sitophilus zeamais, Tribolium castaneum and two parasitoids. Journal of Stored Products Research, [online] 47(3), 222-230. http://dx.doi.org/10.1016/j.jspr.2011.03.002

    2011 - View publication details

  19. Loganathan, M., Jayas, D.S., Fields, P.G., White, N.D.G. (2011). Low and high temperatures for the control of cowpea beetle, callosobruchus maculatus (F.) (coleoptera: Bruchidae) in chickpeas. Journal of Stored Products Research, [online] 47(3), 244-248. http://dx.doi.org/10.1016/j.jspr.2011.03.005

    2011 - View publication details

  20. Bhuvaneswari, K., Fields, P.G., White, N.D.G., Sarkar, A.K., Singh, C.B., Jayas, D.S. (2011). Image analysis for detecting insect fragments in semolina. Journal of Stored Products Research, [online] 47(1), 20-24. http://dx.doi.org/10.1016/j.jspr.2010.08.003

    2011 - View publication details

Research facility

Route 100, Unit 100-101
Morden, MB R6M 1Y5
Canada

Affiliations

Entomological Society of Canada, since 1981 (served on Executive Committee from 1991-1994, President 2008-09)

Entomological Society of Manitoba, since 1988 (served on Executive Committee from 1989-1994, President 2002)

Language

English
French