McCulloch, J. B. and Gassmann, A. J. In Press. Effects of combining soil-applied insecticide and Bt corn for integrated pest management and resistance management of western corn rootworm (Coleoptera: Chrysomelidae). Journal of Economic Entomology doi.org/10.1093/jee/toae149
McCulloch, J. B. and Gassmann, A. J. In Press. Larval density-dependent mortality of western corn rootworm (Coleoptera: Chrysomelidae) in Bt and non-Bt maize and implications on dose calculations. Pest Management Science doi.org/10.1002/ps.8110
Gassmann, A. J. and Meinke, L. J. In Press. Western corn rootworm resistance to Bt maize within the midwestern agricultural landscape. In Brewer, M. and Hein, G. (eds). Arthropod Management and Landscape Considerations in Large Scale Agroecosystems. CABI, Wallingford
Smith, E. M., Shrestha, R. B. and Gassmann, A. J. 2023. Inheritance and fitness costs of laboratory-selected resistance to Gpp34/Tpp35Ab1 corn in western corn rootworm. Journal of Economic Entomology 116:565-573
Gassmann, A. J. and Reisig, D. D. 2023. Management of insect pests with Bt crops in the United States. Annual Review of Entomology 68:31-49
Onstad, D. W. and Gassmann, A. J. 2023. Concepts and complexities of population genetics. pp. 95 - 134 In Onstad, D. W. and Knolhoff, L. M. (eds.). Insect Resistance Management: Biology, Economics and Predictions. 3rd edition. Elsevier, London.
Gassmann, A. J. 2023. Fitness costs of resistance and their potential application for insect resistance management. pp. 465 - 492 In Onstad, D. W. and Knolhoff, L. M. (eds.). Insect Resistance Management: Biology, Economics and Predictions. 3rd edition. Elsevier, London.
Coates, B. S., Deleury, E., Gassmann, A. J., Hibbard, B. E., Meinke, L. J., Miller, N. J., Petzold-Maxwell, J., Sappington, T. W., Siegfried, B. D., Guillemaud, T. 2021. Up-regulation of apoptotic- and cell survival-related gene pathways following exposures of western corn rootworm to Bacillus thuringiensis crystalline pesticidal proteins in transgenic maize roots. BMC Genomics 22:639 doi:10.1186/s12864-021-07932-4
Gassmann, A. J. 2021. Resistance to Bt maize by western corn rootworm: effects of pest biology, the pest-crop interaction and the agricultural landscape on resistance. Insects 12:136 doi:10.3390/insects12020136
St. Clair, C. R. and Gassmann, A. J. 2021. Linking land use patterns and pest outbreaks in Bt maize. Ecological Applications doi.org/10.1002/eap.2295
Shrestha, R. B. and Gassmann, A. J. 2020. Inheritance and fitness costs of Cry3Bb1 resistance in diapausing field strains of western corn rootworm (Coleoptera: Chrysomelidae). Journal of Economic Entomology 113:2873-2882
St. Clair, C. R., Head, G. P., Gassmann, A. J. 2020. Western corn rootworm abundance, injury to corn, and resistance to Cry3Bb1 in the local landscape of previous problem fields. PLoS ONE 15(7): e0237094. doi:10.1371/journal.pone.0237094
St. Clair, C. R., Clifton, E. H., Dunbar, M. W., Masloski, K. E., Paolino, A. R., Shrestha, R. B., Gassmann, A. J. 2020. Applying a selection experiment to test for fitness costs of Bt resistance in western corn rootworm and the effect of density on fitness costs. Journal of Economic Entomology 113:2473-2479
St. Clair, C. R., Head, G. P., Gassmann, A. J. 2020. Comparing populations of western corn rootworm in regions with and without a history of injury to Cry3 corn. Journal of Economic Entomology 113:1839-1849
St. Clair, C. R., Norris, E. J., Masloski, K. E., Coats, J. R., Gassmann, A. J. 2020. Evaluation of pyrethroids and organophosphates in insecticide mixtures for management of western corn rootworm larvae. Pest Management Science 76:3871-3878
Gassmann, A. J., Shrestha, R. B., Kropf, A. L., St. Clair, C. R. and Brenizer, B. D. 2020. Field-evolved resistance by western corn rootworm to Cry34/35Ab1 and other Bacillus thuringiensis traits in transgenic maize. Pest Management Science 76:268-276
Yu, E. Y., Gassmann, A. J., and Sappington, T. W. 2019. Using flight mills to measure flight propensity and performance of western corn rootworm Diabrotica virgifera virgifera LeConte (Coleoptera: Chrysomelidae). JoVE (152), e59196, doi:10.3791/59196
Shrestha, R. B. and Gassmann, A. J. 2019. Field and laboratory studies of resistance to Bt corn by western corn rootworm (Coleoptera: Chrysomelidae). Journal of Economic Entomology 112:2324-2334
Yu, E. Y., Gassmann, A. J., and Sappington, T. W. 2019. Effects of larval density on dispersal and fecundity and western corn rootworm Diabrotica virgifera virgiferaLeConte (Coleoptera: Chrysomelidae). PloS ONE e0212696. doi.org/10.1371/journal.pone.0212696
Shrestha, R. B., Dunbar, M. W., French, B. W., and Gassmann, A. J. 2018. Effects of field history on resistance to Bt maize by western corn rootworm, Diabrotica virgifera virgifera LeConte (Coleoptera: Chrysomelidae). PLoS ONE 13(7): e0200156. doi.org/10.1371/journal.pone.0200156
Shrestha, R. B., Jakka, S. R. K. and Gassmann, A. J. 2018. Response of Cry3Bb1-resistant western corn rootworm (Coleoptera: Chrysomelidae) to Bt maize and soil insecticide. Journal of Applied Entomology 142:937-946
Rovnyak, A. M., Burks, C. S., Gassmann, A. J. and Sappington, T. W. 2018. Interrelation of mating, flight, and fecundity in navel orangeworm (Lepidoptera: Pyralidae) females. Entomologia Experimentalis et Applicata 166:304-315
Rault, L. C., Siegfried, B. D., Gassmann, A. J., Wang, H., Brewer, G. J., Miller, N. J. 2018. Investigation of Cry3Bb1 resistance and intoxication in western corn rootworm by RNA sequencing. Journal of Applied Entomology 142:921-936
Clifton, E. H., Jaronski, S. T., Coates, B. S., Hodgson, E. W., Gassmann, A. J. 2018. Effects of endophytic entomopathogenic fungi on soybean aphid and identification of Metarhizium isolates from agricultural fields. PLoS ONE 13(3): e0194815 doi.org/10.1371/journal.pone.0194815
Clifton, E. H., Tylka, G. L., Gassmann A. J., and Hodgson, E. W. 2018. Interaction of effects of host plant resistance and seed treatments on soybean aphid (Aphis glycines Matsumura), soybean cyst nematode (Heterodera glycines Ichinohe), and soybean yield. Pest Management Science 74:992-1000
Gassmann, A. J. and Clifton, E. H. 2017. Current and potential applications of biopesticides to manage insect pests of maize. pp. 173 - 184 In Lacey, L. A. (ed). Microbial Control of Insect and Mite Pests: From Theory to Practice. 1st edition. Elsevier, London.
Paolino, A. R. and Gassmann, A. J. 2017. Assessment of inheritance and fitness costs associated with field-evolved resistance to Cry3Bb1 maize by western corn rootworm. Toxins 9(5):159; doi:10.3390/toxins9050159
Dunbar, M. W., Gassmann A. J. and O’Neal, M. E. 2017. Impacts of rye cover crop on beneficial arthropods. Environmental Entomology. 46:284-290
Petzold-Maxwell, J. L., Siegfried, B. D., Hellmich, R. L., Abel, C. A., Coates, B. S., Spencer, T. A., Horikoshi, R. J. and Gassmann, A. J. 2017. Fitness costs associated with Cry1F resistance in the European corn borer. Journal of Applied Entomology 141:67-79
Schrader, P. M., Estes, R. E., Tinsley, N. A., Gassmann, A. J. and Gray, M. E. 2017. Evaluation of adult emergence and larval root injury for Cry3Bb1-resistant populations of the western corn rootworm. Journal of Applied Entomology 141:41-52
Gressel, J., Gassmann, A. J., and Owen, M. D. K. 2017. How well will stacked transgenic pest/herbicide resistances delay pests from evolving resistance? Pest Management Science 73:22-34
Dunbar, M. W., O’Neal, M. E. and Gassmann A. J. 2016. Effects of field history on corn root injury and adult abundance of northern and western corn rootworm (Coleoptera: Chrysomelidae). Journal of Economic Entomology 109:2096-2104
Dunbar, M. W., Gassmann A. J. and O’Neal, M. E. 2016. Impacts of rotation schemes on ground-dwelling beneficial arthropods. Environmental Entomology 45:1154-1160
Gassmann, A. J., Shrestha, R. B., Jakka, S. R. K., Dunbar, M. W., Clifton, E. H., Paolino, A. R., Ingber, D. A., French, B. W., Masloski, K. E., Dounda, J. W. and St. Clair, C. R. 2016. Evidence of resistance to Cry34/35Ab1 corn by western corn rootworm (Coleoptera: Chrysomelidae): root injury in the field and larval survival in plant-based bioassays. Journal of Economic Entomology 109:1872-1880
Dunbar, M. W., O’Neal, M. E. and Gassmann A. J. 2016. Increased risk of insect injury to corn following rye cover crop. Journal of Economic Entomology 109:1691-1697
Shrestha, R. B., Jakka, S. R. K., French, B. W. and Gassmann, A. J. 2016. Field-based assessment of resistance to Bt corn by western corn rootworm (Coleoptera: Chrysomelidae). Journal of Economic Entomology 109:1399-1409
Gassmann, A. J. 2016. Resistance to Bt maize by western corn rootworm: insights from the laboratory and the field. Current Opinion in Insect Science 15:111-115.
Jakka, S. R. K., Shrestha, R. B. and Gassmann, A. J. 2016. Broad-spectrum resistance to Bacillus thuringiensis toxins by western corn rootworm (Diabrotica virgifera virgifera). Scientific Reports 6, 27860; doi: 10.1038/srep27860
Deitloff, J., Dunbar, M. W., Ingber, D. A., Hibbard, B. E., and Gassmann, A. J. 2016. Effects of refuges on the evolution of resistance to transgenic corn by western corn rootworm. Pest Management Science. 72: 190-198
Andow, D. A., Pueppke, S. G., Schaafsma, A. W., Gassmann, A. J., Sappington, T. W., Meinke, L. J., Mitchell, P. D., Hurley, T. M., Hellmich, R. L. and Porter, R. P. 2016. Early detection and mitigation of resistance to Bt maize by western corn rootworm (Coleoptera: Chrysomelidae). Journal of Economic Entomology 109: 1-12
Ingber, D. A. and Gassmann, A. J. 2015. Inheritance and fitness costs of resistance to Cry3Bb1 corn by western corn rootworm (Coleoptera: Chrysomelidae). Journal of Economic Entomology 108: 2421-2432
Clifton, E. H., Jaronski, S. T., Hodgson, E. W. and Gassmann, A. J. 2015. Abundance of soil-borne entomopathogenic fungi in organic and conventional fields in the Midwestern USA with an emphasis on the effect of herbicides and fungicides on fungal persistence. PLoS ONE. 10(7): e0133613. doi:10.1371/journal.pone.0133613
Keweshan, R. S., Head, G. P., and Gassmann, A. J. 2015. Effects of pyramided Bt corn and blended refuges on western corn rootworm and northern corn rootworm (Coleoptera: Chrysomelidae). Journal of Economic Entomology 108:720-729
Hoffmann, A. M. French, B. W., Hellmich, R. L., Lauter, N. and Gassmann, A. J. 2015. Fitness costs of resistance to Cry3Bb1 maize by western corn rootworm. Journal of Applied Entomology 139:403-415
Wangila, D. S., Gassmann, A. J., Petzold-Maxwell, J. L., French, B. W., Meinke, L. J. 2015. Susceptibility of Nebraska western corn rootworm (Coleoptera: Chrysomelidae) populations to Bt corn events. Journal of Economic Entomology 108:742-751
Frank, D. L., Kurtz, R. Tinsley, N. A., Gassmann, A. J., Meinke, L. J., Moellenbeck, D., Gray, M. E., Bledsoe, L. W., Krupke, C. H., Estes, R. E., Weber, P. and Hibbard, B. E. 2015. Effect of seed mixtures and soil-insecticide on the emergence of western and northern corn rootworm (Coleoptera: Chrysomelidae) from transgenic Bt maize expressing the mCry3A plus eCry3.1Ab proteins. Journal of Economic Entomology 108:1260-1270
Kladivko, E. J., Helmers, M. J., Abendroth, L. J., Herzmann, D., Lal, R., Castellano, M. J., Mueller, D. S., Sawyer, J. E., Anex, R. P., Arritt, R. W., Basso, B., Bonta, J. V., Bowling, L. C., Cruse, R. M., Fausey, N. R., Frankenberger, J. R., Gassman, P. W., Gassmann, A. J., Kling, C. L., Kravchenko, A., Lauer, J. G., Miguez, F. E., Nafzinger, E. D., Nkongolo, N., O'Neal, M., Owens, L. B., Owens, P. R., Scharf, P., Shipitalo, M. J., Strock, J. S. and Villamil, M. B. 2014. Standardized research protocols enable transdisciplinary research of climate variation impacts in corn production systems. Journal of Soil and Water Conservation 69:532-542
Rausch, M. A., Kroemer, J. A., Gassmann, A. J., Hellmich, R. L. 2014. On-plant selection and genetic analysis of European corn borer (Ostrinia nubilalis) behavioral traits: plant abandonment vs. plant establishment. Environmental Entomology 43:1254-1263
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
Onstad, D. W. and Gassmann, A. J. 2014. Concepts and complexities of population genetics. pp. 149 - 184 In Onstad, D. W. (ed.). Insect Resistance Management: Biology, Economics and Predictions. 2nd edition. Elsevier, London.
Pittendrigh, B. R., Huesing, J., Walters, K., Olds, B., Steele, L. D., Sun, L., Gaffney, P. and Gassmann, A. J. 2014. Negative cross-resistance: history, present status, and emerging opportunities. pp. 373 - 402 In Onstad, D. W. (ed.). Insect Resistance Management: Biology, Economics and Predictions. 2nd edition. Elsevier, London.
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 Entomology106: 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 virgifera. Journal 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 Entomology106:2195-2207
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 virgifera. Pest 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 thuringiensis. Annual Review of Entomology 54:147-163
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 Biotechnology 26:199-202
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 Entomology 99:2125-2131
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 Ecology 20:478-485
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 wrightii. Oecologia 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 hybridus. Journal of Ecology 92:882-892