Galen P. Dively, Ph.D.
Professor Emeritus and IPM Consultant

E-mail: galen@umd.edu
Phone: 301-405-7524
Fax: 301-314-9290
Web: http://www.mdipm.umd.edu/IPM/Dively.htm
Mail: University of Maryland * Entomology Department * Plant Sciences Building * College Park, MD 20742
 
 
Extension and Research Interests
Prior to my retirement in July 2006, I had both extension and research responsibilities, specializing in integrated pest management, non-target risk assessment, and pesticide resistance management. My extension work involved the development and implementation of IPM projects to reduce pesticide use in vegetable and field crops. I am still working part-time and involved with in-state and national training activities conducted to meet the continuing educational needs of agri-chemical personnel, crop advisors, county extension educators, and producers. I also provide periodic pest alerts and management recommendations tailored to real-time conditions, delivered via the Extension PestNet Report during the growing season.

My current research projects focus on the comparative risk assessment of transgenic insecticidal crops and conventional insecticides on nontarget beneficial arthropods, including honey bee; efficacy evaluation of new transgenic corn events; testing of new insecticide formulations and active ingredients, with emphasis on organic products; and studies addressing information gaps in the biology and management of emerging pest species. In collaboration with the pesticide industry, my laboratory also provides insect rearing and bioassay services for the monitoring and detection of resistance development in Colorado potato beetle populations.

 
 
Education
  • B.S. Juniata College, Huntingdon, PA, June 1966; Major: Biology;
  • M.S. Rutgers University, New Brunswick, NJ, June 1968; Major: Entomology;
  • Ph.D. Rutgers University, New Brunswick, NJ, June 1974; Major: Entomology

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    Representative Publications
    Copyright Notice:This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.
     


     

    Lawhorn, C.N., D.A. Neher, and G.P. Dively. 2009. Impact of coleopteran targeting toxin (Cry3Bb1) of Bt corn on microbially mediated decomposition. Appl. Soil Ecology (in press).
     

    Chapman, A.V., T.P. Kuhar, P.B. Schultz, T.W. Leslie, S.J. Fleischer, G.P. Dively, and J. Whalen. 2009. Integrating chemical and biological control of European corn borer in bell pepper. J. Econ. Entomol. 102(1): (in press).
     

    Storer, N.P., G.P. Dively, and R. Herman. 2008. Landscape effects of insect resistant GM crops. (Chapter 13, pp 273-302). In J. Romeis, A. M. Shelton, and G. G. Kennedy (eds.), Integration of Insect-resistant GM crops within IPM Programs, Springer, New York, NY. (pdf file)
     

    Kaplan I., Dively G.P., and Denno R.F. 2008. The costs of anti-herbivore defense traits in agricultural crop plants: a case study involving leafhoppers and potato trichomes. Ecological Applications (in press).
     

    Alyokhin, A., M. Baker, D. Mota-Sanchez, G. Dively, and E. Grafius. 2008. Colorado potato beetle resistance to insecticides. Amer. J. of Potato Res. American Journal of Potato Research 85: 395–413.
     

    Prasifka, J. R., R. L. Hellmich, G. P. Dively, L.S. Higgins, P.M. Dixon, and J.J. Duan. 2008. Selection of nontarget arthropod taxa for field research on transgenic insecticidal crops: using empirical data and statistical power. Environ. Entomol. 37(1): 1-10.
     

    Kaplan I., Dively G.P, Denno R.F. 2008. Variation in tolerance and resistance to the leafhopper Empoasca fabae (Hemiptera: Cicadellidae) among potato cultivars: implications for action thresholds. J. Econ. Entomol. 101:959-968.
     

    Rose, R.I. and G. P. Dively. 2008. Effects of insecticide-treated and lepidopteran-active Bt transgenic sweet corn on the abundance and diversity of arthropods. Environ. Entomol. 36(5): 1254- 268.
     

    Fleischer, S., Payne, G., Kuhar, T., Herbert, A., Jr., Malone, S., Whalen, J., Dively, G., Johnson, D., Hebberger, J. A., Ingerson-Mahar, J., Miller, D., and Isard, S. 2007. Helicoverpa zea trends from the Northeast: Suggestions towards collaborative mapping of migration and pyrethroid susceptibility. Online. Plant Health Progress doi:10.1094/PHP-2007-0719-03-RV.
     

    Duan J.J., Marvier M., Huesing J., Dively G.P., Huang Z.Y. 2008. A meta-analysis of effects of Bt crops on honey bees (Hymenoptera: Apidae). PLoS ONE 3(1): e1415. doi:10.1371/journal.pone.0001415.
     

    Kaplan I., Lynch M.E., Dively G.P., Denno R.F. 2007. Leafhopper-induced plant resistance enhances predation risk in a phytophagous beetle. Oecologia, 152: 665-675.
     

    Prasifka, J. R., M. D. Lopez, R. L. Hellmich, L. C. Lewis, and G. P. Dively. 2007. Comparison of pitfall traps and litter bags for sampling ground-dwelling arthropods J. Appl. Entomol. 131(2): 115-120. (pdf file)
     

    Alyokhin, A., G.P. Dively, M. Patterson, D. Rogers, M. Mahoney, and J. Wollam. 2007. Susceptibility of Imidacloprid-Resistant Colorado Potato Beetles to Non-neonicotinoid Insecticides in the Laboratory and Field Trials. American Journal of Potato Research Amer J of Potato Res (2006) 83:485-49. (pdf file)
     

    Alyokhin, A., G.P. Dively, M. Patterson, C. Castaldo, D. Rogers, M. Mahoney, and J. Wollam. 2007. Cross-resistance to imidacloprid and thiamethoxam in the Colorado potato beetle. Pest Management Science 63: 32-41.
     

    Rose, R.I., G. P. Dively, and J. Pettis. 2007. Effects of Bt corn pollen on honey bees: emphasis on protocol development. Apidologie 38: 368-377.
     

    Lynch, M.E., I. Kaplan, G.P. Dively, and R.F. Denno. 2006. Host plant-mediated competition via induced resistance: interactions between pest herbivores on potatoes. Ecological Applications 16: 855-864.
     

    G. P. Dively. 2005. Impact of transgenic VIP3a x Cry1ab lepidopteran-resistant field corn on the nontarget arthropod community. Environ. Entomol. 34: 1267-1291. (pdf file)
     

    Prasifka, J. R., R.L. Hellmich, G. P. Dively, and L. C. Lewis. 2005. Assessing the effects of pest management on nontarget arthropods: the influence of plot size and isolation. Environ. Entomol. 34: 1181-1192. (pdf file)
     

    Dively, G.P., R. Rose, M.K. Sears, R.L. Hellmich, D.E. Stanley-Horn, D. D. Calvin, J.M. Russo, and P.L. Anderson. 2004. Effects on monarch butterfly larvae (Lepidoptera: Danaidae) after continuous exposure to Cry1ab-expressing corn during anthesis. Environ. Entomol. 33: 1116- 1125.
    Abstract
     

    Head, G. and G.P. Dively. 2004. Impact of transgenic Bt crops on non-target animal species. In Opender Koul and G. S. Dhaliwal (eds.), Transgenic Crop Protection: Concepts and Strategies, Science Publishers Inc., New Hampshire, USA. 388 pp.
     

    Olson, E. R., G. P. Dively, and J. O. Nelson, 2004, Bioassay determination of the distribution of imidacloprid in potato plants: implications to resistance development. J. Econ. Entomol. 97: 614-620
    Abstract
     

    Horner, T.A., G. P. Dively, and D. A. Herbert. 2003. Effects of MON810 Bt field corn on adult emergence of Helicoverpa zea. J. Econ. Entomol. 96: 925-930.
     

    Horner, T.A. and G. P. Dively. 2003. Effect of MON810 Bt field corn on Helicoverpa zea (Lepidoptera: Noctuidae) cannibalism and its implications to resistance development. J. Econ. Entomol. 96: 931-934.
     

    Horner, T.A., G. P. Dively, and D. A. Herbert. 2003. Development, survival and fitness performance of Helicoverpa zea (Lepidoptera: Noctuidae) in MON-810 Bt field corn. J. Econ. Entomol. 96: 914-924.
     

    Dively, G.P. and R. Rose. 2003. Effects of Bt transgenic and conventional insecticide control on the non-target natural enemy community in sweet corn, pp 265-274. In Van Driesche, R. G. (ed.). Proceedings of the First International Symposium on Biological Control of Arthropods, Honolulu, HI, USA, January 14-18, 2002. USDA Forest Service, Morgantown, WVA, USA, FHTET-03-05.
     

    Roderick, G.K., L. Garcia de Mendoza, G.P. Dively, and P. A. Follett. 2003. Sperm precedence in Colorado potato beetle (Coleoptera: Chrysomelidae): temporal variation assessed by neutral markers. Annals Entomol. Soc. Amer. 96: 631-636.
     

    Nault, B.A., J. Speese III, G.G. Kennedy, J. J. Linduska, and G. P. Dively. 2001. Response of potato tuber yield to stem injury by European corn borer (Lepidoptera: Pyralidae) in the mid Atlantic U.S. J. Econ. Entomol. 94(5): 1162-1169.
     

    Sears, M.K., R. L. Hellmich, D.E. Stanley-Horn, K.S. Oberhauser, J'M. Pleasants, H.R. Mattila, B.D. Siegfried, and G.P. Dively. 2001. Impact of Bt corn pollen on monarch butterfly populations: A risk assessment. Proc. Natl. Acad. Sci. USA, 98:11937-11942. Abstract
     

    D.E. Stanley-Horn, G.P. Dively, R.L. Hellmich, H.R. Mattila, M.K. Sears, R.Rose, L.C.H. Jesse, J.E. Losey, J.J. Obrycki, and L. Lewis. 2001. Assessing the impact of Cry1Ab-expressing corn pollen on monarch butterfly larvae in field studies. Proc. Natl. Acad. Sci. USA, 98: 11931-11936. Abstract
     

    J.M. Pleasants, R.L. Hellmich, G.P. Dively, M.K. Sears, D.E. Stanley-Horn, H.R. Attila, J.E. Foster, P.Clark, and G.D. Jones. 2001. Corn pollen deposition on milkweeds in and near cornfields. Proc. Natl. Acad. Sci. USA, 98: 11919-11924. Abstract
     

    K.S. Oberhauser, M.D. Prysby, H.R. Mattila, D.E. Stanley-Horn, M.K. Sears, G.P. Dively, E. Olson, J. M. Pleasants, W.F. Lam, and R.L. Hellmich. 2001. Temporal and spatial overlap between monarch larvae and corn pollen. Proc. Natl. Acad. Sci. USA, 98: 11913-11918. Abstract
     

    Olson, E. R., G. P. Dively, and J. O. Nelson. 2000. Baseline susceptibility to imidacloprid and cross resistance patterns in Colorado potato beetle (Coleoptera: Chrysomelidae) populations. J. Econ. Entomol. 93: 447-458.
     

    Riddick, E. W., G. P. Dively, and P. Barbosa. 2000. Season-long abundance of generalist predators in transgenic versus nontransgenic potato fields. J. Entomol. Sci. 35:349-359
     

     

    Awards and Recognition

  • 2003 Life Sciences Faculty Service Award, University of Maryland, College of Life Sciences

  • 2001 ESA Recognition Award in Entomology, Eastern Branch of the Entomological Society of America.

  • Recognized as Top 25 Most Influential People in Agriculture for 1998, Farmers Digest Magazine, November. 1998.

  • 1993 Distinguished Achievement Award in Extension, Eastern Branch of the Entomological Society of America.

  • 1992 Faculty Award of Excellence in Extension, University of Maryland, Colleges of Agriculture and Life Sciences.

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    Teaching

  • ENTM 789 Field Experience in Pest Management (Credits 1-6). Involvement in practical problems of pest management in field situations. The student is assigned to a problem area for intensive experience, usually during the summer.

  • ENTM 798D Topic Seminar in Pest Management (1 credit). Topic seminars in the area of pest management designed to explore current theoretical and applied issues.

  • ENTM 699 Lectures in Pesticide Policy and Technology (3 credits).

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