Return to: U of M Home

DEPARTMENT OF ENTOMOLOGY
DEPARTMENT DIRECTORY

Home -> Department Directory -> Faculty -> Ian V. MacRae

Ian V. MacRae Assistant Professor and Extension Entomologist

Field Crops IPM Education: Ph.D. - Entomology, Oregon State University (1994) M.S. - Biology, University of Victoria (1988) B.S. - Biology, University of Prince Edward Island (1980) Address: University of Minn. Northwest Research and Outreach Center 2900 University Ave Crookston, MN 56716 phone: (218) 281-8611 fax: (218) 281-8603 E-mail: imacrae@tc.umn.edu

Research Interests: Site-specific IPM; landscape ecology and population dynamics; Geographic Information Systems (GIS), spatial statistics and computer applications in entomology; use of interactive information systems in technology transfer and extension; spatial aspects of pesticide resistance. Teaching Interests: I presently offer the Introductory and Applied Entomology course at the Crookston campus of the University of Minnesota. In addition I have provided a distance delivered courses in Introductory Entomology to Southwest State University in Marshall, MN and Digital Mapping and Interpretation of Populations, cooperatively offered to both the University of Minnesota and North Dakota State University. This course examines the uses of Geographic Information Systems and spatial statistics to map and analyse population dynamics. It is simultaneously delivered to both UMN's St Paul and NDSU's Fargo campuses.

Selected Publications -- Research: MacRae, I.V., N.N. Winchester, and R.A. Ring. 1990. Feeding and host-preference of Cricotopus myriophylli Oliver (Diptera: Chironomidae). J. Aquat. Plant Mgmt. 28: 89-92. Croft, B.A. and I.V. MacRae. 1992. Biological control of apple mites by mixed populations of Metaseiulus occidentalis (Nesbitt) and Typhlodromus pyri Scheuten (Acari: Phytoseiidae). J. Environ. Entomol. 21(1): 202-209. Croft, B.A. and I.V. MacRae. 1992. Persistence of Typhlodromus pyri and Metaseiulus occidentalis (Acari: Phytoseiidae) on apple after inoculative release and competition with Zetzellia mali (Acari: Stigmaeidae). J. Environ. Entomol. 21 (5): 1168-1177. Croft, B.A., MacRae, I.V., and K.G. Currans. 1992. Factors affecting biological control of apple mites by mixes of Metaseiulus occidentalis and Typhlodromus pyri. Exper. & Appl. Acar. 14: 343-355. MacRae, I.V. and B.A. Croft. 1993. Influence of temperature on interspecific predation and cannibalism in Metaseiulus occidentalis (Nesbitt) and Typhlodromus pyri Scheuten (Acari: Phytoseiidae). Environ. Entomol. 22 (4): 770-775. MacRae, I.V. and R.A. Ring. 1993. Life history of Cricotopus myriophylli Oliver (Diptera: Chironomidae) in the Okanagan Valley, British Columbia. Can. Entomol. 125 (6): 979-985. Croft, B.A. and I.V. MacRae. 1993. Biological control of apple mites: impact of Zetzellia mali (Acari: Stigmaeidae) on Typhlodromus pyri and Metaseiulus occidentalis (Acari: Phytoseiidae). Environ. Entomol. 22 (4): 865-873. MacRae, I.V. and B.A. Croft. 1996. Differential impact of egg predation by Zetzellia mali (Acari: Stigmaeidae) on Metaseiulus occidentalis (Nesbitt) and Typhlodromus pyri Schueten (Acari: Phytoseiidae) in a low prey - mixed predator system. Exper. & Appl. Acar. 20: 143-154. MacRae, I.V. and B.A. Croft. 1997. Inter- and intraspecific predation by adult female Metaseiulus occidentalis and Typhlodromus pyri (Acari: Phytoseiidae) at varying densities and proportions of Tetranychus urticae (Acari: Tetranychidae) and phytoseiid larvae. Exp. Appl. Acarol. 21 (4): 235-246. Carter, M., I. MacRae, J. Logan, T. Holtzer. 1998. A population model for Melanoplus sanguinipes (Orthoptera: Acrididae) and an analysis of grasshopper population fluctuations in Colorado. Environ. Entomol. 27(4): 892-901 MacRae, I. And S.A. Armstrong. 2000. Effect of high moisture on pupation of sugarbeet root maggot, Tetanops myopaeformis (Roder) (Diptera: Otitidae). J. Sugarbeet Res. 37(2): 33-40. MacRae, I. 2002. Effect of within field topography on emergence of adult sugarbeet root maggot, Tetanops myopaeformis (Roder) (Diptera: Otitidae). Submitted to J. Sugarbeet Res. Suranyi, R., I. MacRae, D. Ragsdale, and E. Radcliffe. 2002. Site specific management of green peach aphid, Myzus persicae (Homoptera: Aphididae), in seed potatoes – A case study. Submitted to Am. J. Potato Res. Selected Publications -- Extension: MacRae, I.V. 1997. Precision IPM. In: E.B. Radcliffe and W.D. Hutchinson (eds). Gopher State IPM Site - An Electronic IPM Textbook. http://ipmworld.umn.edu/chapters/ipmgis.htm MacRae, I.V. 1998. Scouting for insects in wheat, alfalfa, and soybeans.http://www.nwes.umn.edu/ent/scouting.pdf MacRae, I.V. and K. Ostlie. 1998. Insect management. In Hicks, D. and J.M. Bennett (eds). Minnesota Soybean Production Guide. University of Minnesota Extension Service Publication. MacRae, I.V. and B. Potter. 1998. Scouting. IN Hicks, D. and J.M. Bennett (eds.) Minnesota Soybean Production Guiide. University of Minnesota Extension Service Publication. MacRae, I.V., K. Ostlie, and B. Potter. 1999. Minnesota Grasshopper Management in 1999. U. Minnesota Extension Service Information Brochure. MacRae, I.V., K. Ostlie, and B. Potter. 1999. Minnesota Grasshopper Management in 1999. An interactive website, maintained at: Http://www.nwes.umn.edu/ent/gh98/hopper1.html MacRae, I.V. 1999. Red River IPM in a WWW based IPM resource for the Red River Valley. http://www.nwes.umn.edu/ent/redent.html (maintained) MacRae, I.V. 1999. Insect management. IN: Wiersma, J. and J.M. Bennett (eds). Minnesota Small Grains Production Guide. University of Minnesota Extension Service Publication. MacRae, I.V. 1999. Scouting. IN Wiersma, J. and J.M. Bennett (eds.) Minnesota Small Grains Production Guide. University of Minnesota Extension Service Publication. MacRae, I.V. 2000. Site Specific Pest Management. In: Proc. Crop Pest Mgmt. Short Course, St. Paul, MN Nov. 22, 1999. MacRae, I.V., C. Holen, and K. Ostlie. 2000. Soybean IPM – an interactive CD-Rom. U. Minnesota Extension Service Production. MacRae, I.V. 2001. Online entomological sources – a listing of useful WWW sites providing technical information on insect pest management. UMN MES. Prepared for 2001 Field School, NWROC, Crookston, MN. MacRae, I.V. 2002. Mapping sugarbeet root maggot – 2002. Current web-based maps of sugarbeet root maggot population densities in the RRV. http://nwroc.umn.edu/ent/sbrm2002.html MacRae, I. K. Ostlie, D. Ragsdale, & R. Venette. 2002. Early season scouting for soybean aphid. Minnesota Crop News MNCN85 & Red River IPM: (http://nwroc.umn.edu/ent/archives/early_sba.pdf) .

For more information on IPM in small grains, sugarbeets and oil seed crops and other pest management issues in the Red River Valley and Minnesota, visit the Red River IPM page on the web.