Publications

Gassmann, A. J., Petzold-Maxwell, J. L., Clifton, E. H., Dunbar, M. W., Hoffmann, A. M., Ingber, D. A. and Keweshan, R. S.  2014.   Field-evolved resistance by western corn rootworm to multiple Bacillus thuringiensis toxins in transgenic maize.  Proceedings of the National Academy of Sciences USA 111:5141-5146

Petzold-Maxwell, J. L., Siegfried, B. D, Hellmich, R. L. Abel, C. A., Coates, B. S., Spencer, T. A., and Gassmann, A. J.  2014.  Effect of maize lines on larval fitness costs of Cry1F resistance in the European corn borer.  Journal of Economic Entomology 107:764-772

Hoffmann, A. M.,  French, B. W., Jaronski, S. T., and Gassmann, A. J.  2014.  Effects of entomopathogens on mortality of western corn rootworm and fitness costs of resistance to Cry3Bb1 maize.  Journal of Economic Entomology 107:352-360  

Bruner, R. F., Hodgson, E. W. and Gassmann, A. J.  2013.  Effects of Rag1 on the preference and performance of soybean defoliators.  Journal of Economic Entomology 106: 2577-2584 

Cullen, E. M., Gray, M. E., Gassmann, A. J. and Hibbard, B. E.  2013.  Resistance to Bt corn by western corn rootworm (Coleoptera: Chrysomelidae) in the U.S. Corn Belt.  Journal of Integrated Pest Management 4(3): doi: dx.doi.org/10.1603/IPM13012  

Rudeen, M. L., Jaronski, S. T., Petzold-Maxwell, J. L. and Gassmann, A. J.  2013.  Entomopathogenic fungi in cornfields and their potential to manage larval western corn rootworm Diabrotica virgifera virgiferaJournal of Invertebrate Pathology 114:329-332  

Petzold-Maxwell, J. L., Alves, A. P., Estes, R. E., Gray, M. E., Meinke, L. J.,  Shields, E. J., Thompson, S. D., Tinsley, N. A. and Gassmann, A. J.  2013.  Applying an integrated refuge to manage western corn rootworm (Coleoptera: Chrysomelidae): effects on survival, fitness and selection pressure.  Journal of Economic Entomology 106:2195-2207

Petzold-Maxwell, J. L., Meinke, L. J., Gray, M. E., Estes, R. E. and Gassmann, A. J.  2013.  Effect of Bt maize and soil insecticides on yield, injury, and rootworm survival: implications for resistance management.  Journal of Economic Entomology 106:1941-1951

Petzold-Maxwell, J. L., Jaronski, S. T., Clifton, E. H., Dunbar, M. W., Jackson, M. A. and Gassmann, A. J.  2013. Interactions among Bt maize, entomopathogens and rootworm species (Coleoptera: Chrysomelidae) in the field: effects on survival, yield and root injury. Journal of Economic Entomology 106:622-632

Rudeen, M. L. and Gassmann, A. J.  2013. Effects of Cry34/35Ab1 corn on survival and development of western corn rootworm, Diabrotica virgifera virgiferaPest Management Science 69:709-716

Dunbar, M. W. and Gassmann, A. J.  2013. Abundance and distribution of western and northern corn rootworm (Diabrotica spp.) and prevalence of rotation resistance in eastern Iowa.  Journal of Economic Entomology106:168-180

Petzold-Maxwell, J. L., Cibils-Stewart, X., French, B. W., and Gassmann, A. J.  2012. Adaptation by western corn rootworm (Coleoptera: Chrysomelidae) to Bt maize: inheritance, fitness costs and feeding preference. Journal of Economic Entomology 105:1407-1418

Gassmann, A. J. and Hutchison, W. D.  2012. Bt crops and insect pests: past successes, future challenges and opportunities. GM Crops and Food 3:139

Gassmann, A. J., Petzold-Maxwell, J. L., Keweshan, R. S., Dunbar, M. W.  2012. Western corn rootworm and Bt maize: challenges of pest resistance in the field. GM Crops and Food 3:235-244

Gassmann, A. J.  2012.  Field-evolved resistance to Bt maize by western corn rootworm: predictions from the laboratory and effects in the field.  Journal of Invertebrate Pathology 110:287-293

Gassmann, A. J., Hannon, E. R., Sisterson, M. S. Stock, S. P., Carrière, Y., and Tabashnik, B. E.  2012.  Effects of entomopathogenic nematodes on the evolution of pink bollworm resistance to Bt toxin Cry1Ac.  Journal of Economic Entomology 105:994-1005

Dunbar, M. W. and Gassmann, A. J.  2012.  Effect of soybean varieties on western corn rootworm survival and fecundity.  Journal of Economic Entomology 105:625-631

Petzold-Maxwell, J.L., Jaronski, S.T., Gassmann, A. J.  2012.  Tritrophic interactions among Bt maize, an insect pest, and entomopathogens: effects on development and survival of western corn rootworm.  Annals of Applied Biology 160:43-55

Gassmann, A. J.,  Petzold-Maxwell, J. L., Keweshan, R. S., and Dunbar, M. W.  2011.  Field-evolved resistance to Bt maize by western corn rootworm. PLoS ONE 6(7): e22629. doi:10.1371/journal.pone.0022629

Williams, J. L., Ellers-Kirk, C., Orth, R. G., Gassmann, A. J., Head, G. P.,  Tabashnik, B. E., and Carrière, Y.  2011.  Fitness cost of resistance to Bt cotton linked with increased gossypol content in pink bollworm larvae.  PLoS ONE 6(6): e21863. doi:10.1371/journal.pone.0021863

Hannon, E. R., Sisterson, M. S., Stock, S. P., Carrière, Y., Tabashnik, B. E., and Gassmann, A. J.  2010.  Effects of four nematode species on fitness costs of pink bollworm resistance to Bacillus thuringiensis toxin Cry1Ac. Journal of Economic Entomology 103:1821-1831

Gassmann, A. J., Stock, S. P., Tabashnik, B. E., and Singer, M. S.  2010.  Tritrophic effects of host plants on an herbivore-pathogen interaction.  Annals of the Entomological Society of America 103:371-378

Gassmann, A. J., Onstad, D. W., and Pittendrigh, B. R.  2009.  Evolutionary analysis of herbivorous insects in natural and agricultural environments. Pest Management Science 65:1174-1181

Lundgren, J. G., Gassmann, A. J., Bernal, J. S., Duan, J. J., and Ruberson, J. R.  2009.  Ecological compatibility of GM crops and biological control. Crop Protection 28:1017-1030

Gassmann, A. J., Fabrick, J. A., Sisterson, M. S., Hannon, E. R., Stock, S. P., Carrière, Y., and Tabashnik, B. E.  2009.  Effects of pink bollworm resistance to Bt on phenoloxidase activity and susceptibility to entomopathogenic nematodes. Journal of Economic Entomology 102:1224-1232

Gassmann, A. J., Carrière, Y., and Tabashnik, B. E.  2009.  Fitness costs of insect resistance to Bacillus thuringiensisAnnual Review of Entomology54:147-163

Gassmann, A. J., Stock, S. P., Sisterson, M. S., Carrière, Y., and Tabashnik, B. E.  2008.  Synergism between entomopathogenic nematodes and Bacillus thuringiensis crops: integrating biological control and resistance management. Journal of Applied Ecology 45:957-966

Tabashnik, B. E., Gassmann, A. J., Crowder, D. W., and Carrière, Y.  2008.  Field-evolved resistance to Bt toxins. Nature Biotechnology 26:1074-1076

Heuberger, S., Ellers-Kirk, C., Yafuso, C., Gassmann, A. J., Tabashnik, B. E., Dennehy, T. J., and Carrière, Y.  2008.  Effects of refuge contamination by transgenes on Bt resistance in pink bollworm (Lepidoptera: Gelechiidae).Journal of Economic Entomology 101:504-514

Tabashnik, B. E., Gassmann, A. J., Crowder, D. W., and Carrière, Y.  2008.  Insect resistance to Bt crops: evidence versus theory. Nature Biotechnology26:199-202

Tabashnik, B. E., Biggs, R. W., Fabrick, J. A., Gassmann, A. J., Dennehy, T. J., Carrière Y. and Morin, S.  2006.  High-level resistance to Bt toxin Cry1Ac and cadherin genotype in pink bollworm. Journal of Economic Entomology99:2125-2131

Gassmann, A. J., Stock, S. P., Carrière, Y., and Tabashnik, B. E.  2006.  Effect of entomopathogenic nematodes on the fitness cost of resistance to Bt toxin Cry1Ac in pink bollworm (Lepidoptera: Gelechiidae). Journal of Economic Entomology 99:920-926

Gassmann, A. J., Levy, A., Tran, T. and Futuyma, D. J.  2006.  Adaptations of an insect to a novel host plant: a phylogenetic approach. Functional Ecology20:478-485

Gassmann, A. J. and Hare, J. D.  2005.  Indirect cost of a defensive trait: variation in trichome type affects the natural enemies of herbivorous insects on Datura wrightiiOecologia 144:62-71

Gassmann, A. J. and Futuyma, D. J.  2005.  Consequences of herbivory for the fitness cost of herbicide resistance: photosynthetic variation in the context of plant-herbivore interactions. Journal of Evolutionary Biology 18:447-454

Gassmann, A. J.  2005.  Resistance to herbicide and susceptibility to herbivores: environmental variation in the magnitude of an ecological trade-off. Oecologia 145:575-585

Gassmann, A. J.  2004.  Effect of photosynthetic efficiency and water availability on tolerance of leaf removal in Amaranthus hybridusJournal of Ecology 92:882-892