Professional Responsibilities and Activities
I teach classes to undergraduate and graduate students in IPM and Crop Insect Management and undergraduate classes leading to a capstone research experience. My main research project is in livestock entomology to develop new IPM tactics including the use of repellents and attractants in a push-pull system. Other projects include collaborations on crop IPM systems and conservation of the federally endangered Salt Creek tiger beetle. International work includes consulting on curricula design and development for the Rwandan Institute for Conservation Agriculture and pest flies associated with livestock in the Philippines.
Biological Insect Control
Current Issues in Entomology
Entomology and Pest Management
Humans, Insects, and the Environment
Insect Plant Interactions. Lead Instructor, co-taught with Kansas State Univ. and UNL faculty.
Insect Science Capstone Experience
Integrated Pest Management
Plant Resistance to Insects
Readings in Plant Resistance to Insects
Undergraduate Research Seminar, 2012
ESCOP-ACOP Leadership Development Fellowship, 1999
Expert Reviewer, USDA-ARS, Northern Plains Agricultural Research Laboratory, Sidney, MT, 2002
President of the NC Branch of Entomology Soc. America, 2004/2005
Council Entomology Dept. Administrator (CEDA), Chair, 2006
Kansas State University, Department of Entomology, Distinguished Alumnus, 2009
Council for Agric. Sci. Tech (CAST), Board of Representatives. Council Entomology Dept. Administrator representative, 2014-2016. Chair of Plant Work Group (2015).
Entomology Soc. America Governing Board, 2015-2018
2015 Tangtrakulwanich, K., T. A. Albuquerque, G. J. Brewer, F. P. Baxendale, L. Zurek, D. N. Miller, D. B. Taylor, K. A. Friesen, J. J. Zhu. 2015. Behavioral responses of stable flies to cattle manure slurry associated odorant. Medical and Veterinary Entomology. doi: 10.1111/mve.12103.
2014 Zhu, J.J., G. J. Brewer, D. J. Boxler, K. Friesen, D. B. Taylor. 2014. Comparisons of antifeedancy and spatial repellency from three natural product repellents against horn flies, Haematobia irritans (Diptera: Muscidae). Pest. Manag. Sci.1526-4998. http://dx.doi.org/10.1002/ps.3960.
2012 Tangtrakulwanich, K. 2012. Sensory morphology and chemical ecology of the stable fly, Stomoxys calcitrans: host-seeking and ovipositional selection. PhD dissertation. Univ. of Nebraska-Lincoln.
2011 Zhu, J., D. Berkebile, C. Dunlap, A. Zhang, D. Boxler, K. Tangtrakulwanich, R. Behle, F. Baxendale, G. Brewer. 2011. Nepetalactones from essential oil of Nepeta Cataria represent a stable fly feeding and ovipositional repellent. Med. Vet. Entomol. 26 (2): 131-138.
Tangtrakulwanich, K., H. Chen, F. Baxendale, G. Brewer, and J. J. Zhu. 2011. Characterization of olfactory sensilla of Stomoxys calcitrans and electrophysiological responses to odorant compounds associated with hosts and oviposition media. Med. Vet. Entomol. 25 (3): 327–336.
Zhu, J., A. Y. Li, S. Pritchard, K. Tangtrakulwanich, F. P. Baxendale, and G. Brewer. 2011. Contact and fumigant toxicity of a botanical-based feeding deterrent of the stable fly, Stomoxys calcitrans (Diptera: Muscidae). J. Agric. Food Chem. 59 (18): 10394-10400.
2015 Brewer, G. J. and D. J. Boxler. 2015. Cargill Essential Oil Feedthrough. $9,815 (May - Dec 2015)..
2014 Brewer, G. J. 2014. Increasing the Capacity of the Captive Rearing and Reintroduction Program for the Salt Creek tiger beetle, Cicindela nevadica lincolniana. NE Game and Parks Comm. $62,900.
Brewer, G. J. and D. J. Boxler. 2014. Fatty Acid Based Insecticide. USDA SBIR. $10,364.
2013 Reifenrath, W., G. J. Brewer, and D. J. Boxler. 2013. Fatty Acid Based Insecticide. USDA SBIR. $24,735.
2012 Brewer, G. J., J. Zhu, and D. J. Boxler. 2012. Biopesticide management of pasture flies in the Great Plains via a push-pull strategy. USDA PMAP $200,000.
2011 Brewer, G. 2011. Biology and Conservation of the Salt Creek Tiger Beetle. NE Game and Parks Comm. $6,600
Brewer, G. 2011. Salt Creek Tiger Beetle Preventing Extinction. US Fish and Wildlife Ser. $7,7009
Brewer, G. 2011. Salt Creek Tiger Beetle Rearing and Reintroduction. US Fish and Wildlife Ser. $45,600.
Boxler, D., and G. Brewer. 2011. A Comparative Field Study to Evaluate the Efficacy of Corathon Ear Tags for Control of Horn Flies, Face Flies, and Stable Flies Infesting Stocker Cattle and Evaluate Added Weight Gain due to Fly Control. Bayer Corp. $73,477.
Hein, G., M. Lagrimini, J. Steadman, and G. Brewer. 2011. National Needs Fellow: Integrated practitioners for tomorrow's sustainable agricultural systems. USDA CSREES. $234,000.
2010 Brewer, G., S. Spomer, and R. Cortinas. 2010. Assessing populations of the Salt Creek tiger beetle. $4,340.
Stone, J. and G. Brewer. 2010. IANR Research Strategic Planning Grant: Plant Stress Biology Initiative. $15,000.
Reifenrath, W, G Brewer, B Siegfried, M Cortinas, D Boxler. 2010. Fatty acid based insecticides for mosquito management. Foundation NIH. $1,185,395 requested (NE sub award 356,518). $400,000 awarded, not accepted.
2009 Weissling, T. and G. Brewer. 2009. Extended Education and Outreach, Application for Funding and Course Offering Agreement, Insect Plant Interactions. $3,000.
2008 Hein, G., M. Lagrimini, J. Steadman, and G. Brewer. 2008. Integrated Practitioners for Tomorrows Sustainable Agricultural Systems. USDA CSREES National Needs Fellowship. $234,000.
2007 Brewer, G. J. and F. Baxendale. 2007. Identifying critical stimuli for attraction and oviposition of stable fly populations. USDA ARS Special Cooperative Agreement, $80,000.