Entomology and Plant Pathology

Dr. Kristopher L. Giles, Regents Professor

B.S., Alma College, 1990

M.S., Iowa State University, 1992

Ph.D., Iowa State University, 1996



ENTO 4223 Ecological Methodology
ENTO 2003
ENTO 5513
Insects and Society
Biological Control
ENTO/PLP 5524 Integrated Management of Insect Pests and Pathogens

Program Personnel:

Postdoctoral Fellows
Dr. Georges Backoulou - Remote Sensing of Aphid Infestations (Co-advised with N. Elliott)

Graduate Students

  • Casi Jessie, Ph.D. - Insect Predation
  • Kyle Risser - Ph.D. - Insect Ecology/Sampling
  • Aqeel Alyousuf - Ph.D. - Insect Sampling
  • Will Jessie - Ph.D. - Insect Ecology/IPM
  • Dayna Collett - Ph.D. - Aphid Biology

Former Students and Postdoctoral Fellows 

  • Fangling Tao - Applied Mathematician, Eli Lilly
  • Yi Chen - Professor, Alderson-Broaddus College
  • Emad Ismail - Biggio Center for Enhancement of Teaching and Learning, Auburn Univeristy
  • Sean Keenan - Environmental Analyst with BIO-WEST, Inc.
  • Vasile Catana - Programmer, Bioinformatics Scientist, McMaster University
  • Matt Rawlings - Scott's Company 
  • Mpho Phoofolo - Teaching Faculty-National University of Lesotho
  • Doug Jones - Monsanto
  • Renee Stockland - LPN, Bella Vista Arkansas
  • Sarah Donelson - Monsanto 
  • Kody Mullins - Assistant Professor, Shorter University
  • Nathan Bradford - Lab Assistant, University of California Cooperative Extension, Ventura County
  • Tom Ferrari - Poland Spring/Nestle Waters.
  • Xandra Robideau - Insect Adventure, OSU

Current research in winter wheat and canola:

Aphids: Sampling, Population Dynamics, Economic Injury Levels

Natural Enemies: Sampling, Thresholds, Tritrophic Interactions, Population Ecology, Impact in diverse agricultural systems

Product Evaluation: Selectivity, Dosages, Integrated Control

Recent Publications:

Backoulou,G., N. Elliott, K. Giles, M. Phoofolo and V. Catana.  2011.  Development of a method using multispectral imagery and spatial pattern metrics to quantify stress to wheat fields caused by Diuraphis noxia.  Computers and Electronics in Agriculture.  75: 64-70.

Royer, T. A., N. C. Elliott and K. L. Giles. 2011.  Field Efficacy of Winter-time Insecticide Applications Against Greenbug Schizaphisgraminum (Rondani) (Hemiptera: Aphididae), on Winter Wheat (Triticum aestivu L.) Crop Protection. 30: 826-832.

Backoulou, G., Elliott, N.C., Giles, K., Phoofolo, M., Catana, V., Mirik, M., Michels, J. 2011. Spatially discriminating Russian wheat aphid induced plant stress from other wheat stressing factors. Computers and Electronics in Agriculture. 78:123-129.

Mullins, C. B. and K. L. Giles.  2011.  Using PCR to Detect Intraguild Predation of Lysiphlebus testaceipes by Coccinellids. Southwestern Entomologist. 36 (3): 295-304.

Gautam, S.G., G.P. Opit, and K.L. Giles. 2012. Effects of constant temperatures on reproductive parameters of the psocid  Liposcelis rufa (Psocoptera: Liposcelididae). Entomology, Ornithology, and Herpetology S1:002. doi:10.4172/2161- 0983.S1-002.

Edwards, J. T., R. M. Hunger, E. L. Smith, G. W. Horn, M. S. Chen, L. Yan, G. Bai, R. L. Bowden, A. R. Klatt, P. Rayas-Duarte, R. D. Osburn, K. L. Giles, J. A. Kolmer, Y. Jin, D. R. Porter, B. W. Seaborn, M. B. Bayles, and F. F. Carver.  2012.  ‘Duster’ Wheat:  A durable, dual-purpose cultivar adapted to the Southern Great Plains of the USA.  J. Plant Registrations. 6: 37-48.

Backoulou, G., Elliott, N.C., Giles, K.L., and M. N. Rao.  2013.  Differentiating stress to wheat fields induced by  Diuraphis noxia from other stress causing factors. Computers and Electronics in Agriculture. 90:47-53.

Gautam, S.G., G.P. Opit, K.L. Giles and B. Adam. 2013. Weight Loss and Germination Failure Caused by Psocids in Different Wheat Varieties.  J. Econ. Entomol. 106: 491-498.                                                   

Mullins, C. B., K. L. Giles and T. A. Royer.  2013.  Impact of Lysiphlebus testaceipes Stage of Development within  Greenbug Hosts on Survival and Development of Late-Stage Hippodamia convergens Larvae. Southwestern   Entomol.  38: 549-560.

Elliott, N. C., G. F. Backoulou, K. L. Giles and T. A. Royer. 2014.  Aphids and parasitoids in wheat and nearby canola fields in central Oklahoma. Southwestern Entomol.  39: 23-28.

Hunger, R. M. , J. T. Edwards, R. L. Bowden, L. Yan, P. Rayas-Duarte, G. Bai, G. W. Horn, J. A. Kolmer, K. L. Giles,  M. Chen, Y. Jin, R. D. Osburn, M. B. Bayles, B. W. Seabourn, A. R. Klatt, B. F. Carver. 2014. ‘Billings’ Wheat  Combines Early Maturity, Disease Resistance, and Desirable Grain Quality for the Southern Great Plains of the USA.  J. Plant Registrations.doi:10.3198/jpr2012.11.0053crc.  

Vitale, P. P., F. M. Epplin, K. L. Giles, N. C. Elliott, P. A. Burgener and S. P. Keenan.  2014.  Crop diversity ontraditional Great Plains wheat farms. J. of the Amer. Society of Farm Managers and Rural Appraisers 77:145-159.

Garcés-Carrera1, S., A. Knutson, H. Wang, K. L. Giles, F. Huang, R. J. Whitworth, C. M. Smith and M. S. Chen.  2014. Virulence and Biotype Analyses of Hessian Fly (Mayetiola destructor) Populations from Texas, Louisiana, and Oklahoma.  J. Econ. Entomol. 107: 417-423.

Elliott, N. C., M. J. Brewer, K. L. Giles, G. F Backoulou, B. P. McCornack, B. B. Pendleton and T. A. Royer.  2014. Sequential Sampling for Panicle Caterpillars (Lepidoptera: Noctuidae) in Grain Sorghum.  J. Econ. Entomol. 107:  846-853.

Chen, M., S. Wheeler, H. Davis, R. J. Whitworth, A. Knutson, K. L. Giles, T. A. Royer and M. Skinner.  2014.                               Molecular Markers for Identification of Hessian Fly Males Caught on Pheromone Traps.  J. Econ. Entomol. 107: 1110-1117.

Backoulou,  G. F.,  N. C. Elliott,  T. A. Royer, B. P. McCornack, K. L. Giles,  B. B. Pendleton andM. J. Brewer.  2014.  A Web-based Decision Support System for Managing Panicle Caterpillars in Sorghum Crop Management. 13:1. https://www.agronomy.org/publications/cm/abstracts/13/1/CM-2014-0020-MG

Puterka, G. J,  K. L. Giles, M. J. Brown, S. J. Nicholson, R. W. Hammon, F. B. Peairs, T. L. Randolph, G. J. Michaels, E. D. Bynum, T. L. Springer, J. S. Armstrong, and D. W. Mornhinweg.  2015.  Change in Biotypic Diversity of Russian Wheat Aphid (Hemiptera: Aphididae) Populations in the United States. J. Econ. Entomol. 108: 798-804.

Jessie, W. P., K. L. Giles, E. J. Rebekj, M. E. Payton, C. N. Jessie and B. P. Mccornack.  2015.  Preference and Performance of Hippodamia convergens (Coleoptera: Coccinellidae) and Chrysoperla carnea (Neuroptera: Chrysopidae) on Brevicoryne brassicae, Lipaphis erysimi, and Myzus persicae (Hemiptera: Aphididae) From Winter-Adapted Canola.  Environmental Entomology. 44: 880-889.

Elliott, N. C., G. F. Backoulou, M. J. Brewer, and K. L. Giles.  2015.  NDVI to detect sugarcane aphid injury to grain sorghum. J. Econ. Entomol. 108: 1452-1455.

Backoulou, G. F., N. C. Elliott, K. L. Giles and M. Mirik.  2015.  Processed multispectral imagery differentiates wheat crop stress caused by greenbug from other causes.  Computers and Electronics in Agriculture. 115: 34-39.

Book Chapters:

Giles, K. L. and N. W. Walker. 2009. Dissemination and impact of IPM programmes in US agriculture. In (Peshin and Dhawan Eds.) Integrated Pest Management: Innovation-Development Process Vol.2. pgs 481-506. Springer, United Kingdom.

Giles, K. L., G. Hein, and F. Peairs. 2008. Areawide Pest Management of Cereal Aphids in Dryland Wheat Systems of the Great Plains. In (Koul et al. Eds.) Areawide pest management: Theory and Implementation. CABI, UK. Pgs. 441-466.

Giles, K. L. and N. W. Walker. 2008. Dissemination and impact of IPM programmes in US agriculture. In (Peshin and Dhawan Eds.) Integrated Pest Management: Innovation-Development Process Vol.1. In press.

Giles, K. L., N. Elliott and T. A. Royer. 2007. Biological Control. In (Buntin et al. Eds.) ESA Handbook of small grain insects.

Keenan, S. P., K. L. Giles, N. C. Elliott, T. A Royer, P. A. Burgener, and D. R. Porter. 2007. Producer perspectives on area-wide pest management for wheat in the southern U.S. great plains. In Opender K, and G. W. Cuperus (Eds.), Ecologically-Based Integrated Pest Management. Pgs. 289-314. Taylor & Francis, UK.

Obrycki, J. J., N. Elliott and K. L. Giles. 1999. Coccinellid introductions: potential for and evaluation of non-target effects. In (Folett and Duan Eds.) "Nontarget effects of biological control". Kluwer Academic.

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