Dr. Paul G. Fields

Image Paul Fields
Research Scientist

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

Agriculture and Agri-Food Canada

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

For a complete list of publications, please visit: AAFC Online

Fields, PG. 1992. The use of environmental extremes to control stored-product insects and mites. J. Stored Prod. Res. 28:89-118

Banks, HJ and Fields, PG. 1995. Physical methods for insect control in stored grain. Pp. 353-409. In Stored Grain Ecosystems. (Eds. Jayas, DS, White, NDG, Muir, WE and Sinha, RN). Marcel Dekker, Inc. New York.

Fields, PG and White, NDG. 2002. Alternatives to methyl bromide treatments for stored product and quarantine insects. Ann. Rev. Entomol. 47:331-359.




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)