Ivan Hiltpold

  • Ph.D. Entomology, Chemical Ecology, 2008
  • M.S. Behaviour, Ecology and Evolution, 2005

Current Courses
  • ENWC 205 Elements of Entomology
  • ENWC311 Urban and Agricultural Entomology
  • ENWC467-667 Chemical Ecology: The Fragrance of Life

Professional Experience
  • Research Fellow, Hawkesbury Institute for the Environment, Western Sydney University, Australia, 2014-2016
  • Post-Doctoral Fellow, Entomology, University of Missouri, 2012-2014
  • Post-Doctoral Fellow, Chemical Ecology, University of Neuchâtel, Switzerland, 2009-2012

Research Activities
  • Belowground food webs and trophic interactions
  • Belowground chemical and behavioral ecology of root pest
  • Resistance management of insects to Bt plants
  • Use of soil microbiome in sustainable agriculture and soil management
  • Entomopathogenic nematode behavior

Professional Activities
  • Society of Invertebrate Pathology (Member at Large of the Nematode Division, 2015-2017)
  • International Organization for Biological Control (International Working Group on Ostrinia and other Maize Pests)
  • Entomological Society of America
  • Society of Nematology



29. Hiltpold, I., and B. E. Hibbard. 2018. Indirect Root Defenses Cause Induced Fitness Costs in Bt-Resistant Western Corn Rootworm. Journal of Economic Entomology

28. Ryalls, J. M. W, B. D. Moore, S. N. Johnson, M. Connor, and I. Hiltpold. 2018. Root responses to domestication, precipitation and silicification: weeping meadow grass simplifies and alters toughness. Plant and Soil 427:291–304.

27. Johnson, S. N., G. Lopaticki, T. J. Aslam, K. Barnett, A. Frew, S. E. Hartley, et.al. 2018. Dryland management regimes alter forest habitats and understory arthropod communities. Annals of Applied Biology 172:282–294.

26. Hiltpold, I., and W. G. Shriver. 2018.  Birds bug on indirect plant defenses to locate insect prey. Journal of Chemical Ecology  21:1-4.

25. Johnson, S. N., G. Glauser, I. Hiltpold, B. D. Moore, and J. M. W. Ryalls. 2018. Root herbivore performance suppressed when feeding on a jasmonate‐induced pasture grass. Ecological Entomology.


24. Hiltpold, I. and Hibbard, B. E. 2016. Neonate larvae of the specialist herbivore Diabrotica virgifera virgifera do not exploit the defensive volatile (E)-β-caryophyllene in locating maize roots. Journal of Pest Science 89: 853-858.

23. Hiltpold, I., Moore, B. D. and Johnson, S. N. 2016. Novel In Vitro procedures for rearing a root-feeding pest (Heteronychus arator) of grasslands. Frontiers in Plant Science 7.


22. Jaffuel, G., Hiltpold, I. and Turlings, T. C. J. 2015. Highly Potent Extracts from Pea (Pisum sativum) and Maize (Zea mays) Roots Can Be Used to Induce Quiescence in Entomopathogenic Nematodes. Journal of Chemical Ecology 41: 793-800.5.

21. Hiltpold, I., Jaffuel, G. and Turlings, T. C. J. 2015. The dual effects of root-cap exudates on nematodes: from quiescence in plant-parasitic nematodes to frenzy in entomopathogenic nematodes. Journal of Experimental Botany 66: 603-611.


20. Demarta, L., Hibbard, B. E., Bohn, M. O. and Hiltpold, I. 2014. The role of root architecture in foraging behavior of entomopathogenic nematodes. Journal of Invertebrate Pathology 122: 32-9.

19.Hiltpold, I., Adamczyk, J. J., Higdon, M. L., Clark, T. L., Ellersieck, M. R. and Hibbard, B. E. 2014. Carbon isotope ratios document that the elytra of western Corn rootworm (Coleoptera: Chrysomelidae) reflects adult versus larval feeding and later instar larvae prefer Bt corn to alternate hosts. Environmental Entomology 43: 840-848.


18. Johnson, S. N., Hiltpold, I. and Turlings, T. C. J., Eds. 2013. Behavior and Physiology of Root Herbivores. Advances in Insect Physiology. Oxford, UK, Academic Press.

17. Hiltpold, I., Bernklau, E., Bjostad, L. B., Alvarez, N., Miller-Struttmann, N. E., Lundgren, J. G. and Hibbard, B. E. 2013. Nature, Evolution and Characterisation of Rhizospheric Chemical Exudates Affecting Root Herbivores. in: Advances in Insect Physiology. Eds: S. N. Johnson, I. Hiltpold and T. C. J. Turlings. Oxford, UK, Academic Press. 45: 97-157.

16. Robert, C. A. M., Erb, M., Hiltpold, I., Hibbard, B. E., Gaillard, M. D. P., Bilat, J., Degenhardt, J., Cambet-Petit-Jean, X., Turlings, T. C. J. and Zwahlen, C. 2013. Genetically engineered maize plants reveal distinct costs and benefits of constitutive volatile emissions in the field. Plant Biotechnology Journal 5: 628-639.


15. Rasmann, S., Hiltpold, I. and Ali, J. 2012. The role of root-produced volatile secondary metabolites in mediating soil interactions. in: Advances in Selected Plant Physiology Aspects. Eds: G. Montanaro and B. Dichio. Rijeka, Croatia, InTech: 269-290.

14. Hiltpold, I. and Turlings, T. C. J. 2012. Manipulation of chemically mediated interactions in agricultural soils to enhance the control of crop pests and to improve crop yield. Journal of Chemical Ecology 38: 641-650.

13. Hiltpold, I., Hibbard, B. E., French, D. W. and Turlings, T. C. J. 2012. Capsules containing entomopathogenic nematodes as a Trojan horse approach to control the western corn rootworm. Plant and Soil 358: 11-25.

12. Turlings, T. C. J., Hiltpold, I. and Rasmann, S. 2012. The importance of root-produced volatiles as foraging cues for entomopathogenic nematodes. Plant and Soil 359: 51-60.

11. Hiltpold, I., Erb, M., Robert, C. A. M. and Turlings, T. C. J. 2011. Systemic root signalling in a belowground, volatile-mediated tritrophic interaction. Plant Cell and Environment 34: 1267-1275.


10. Hiltpold, I., Baroni, M., Toepfer, S., Kuhlmann, U. and Turlings, T. C. J. 2010. Selective breeding of entomopathogenic nematodes for enhanced attraction to a root signal did not reduce their establishment or persistence after field release. Plant Signaling and Behavior 5: 1450-1452.

9. Hiltpold, I., Baroni, M., Toepfer, S., Kuhlmann, U. and Turlings, T. C. J. 2010. Selection of entomopathogenic nematodes for enhanced responsiveness to a volatile root signal helps to control a major root pest. Journal of Experimental Biology 213: 2417-2423.

8. Held, M., D’Alessandro, M., Hiltpold, I. and Turlings, T. C. J. 2010. Highlights of analytical chemistry in Switzerland. Chimia 64: 322.

7. Held, M., D’Alessandro, M., Hiltpold, I. and Turlings, T. 2010. The corn’s cry for help – Der Hilfeschrei des Mais. Nachrichten aus der Chemie 58: 914.


6. Kurtz, B., Hiltpold, I., Turlings, T. C. J., Kuhlmann, U. and Toepfer, S. 2009. Comparative susceptibility of larval instars and pupae of the western corn rootworm to infection by three entomopathogenic nematodes. Biocontrol 54: 255-262.

5. Hiltpold, I., Toepfer, S., Kuhlmann, U. and Turlings, T. C. J. 2009. How maize root volatiles affect the efficacy of entomopathogenic nematodes in controlling the western corn rootworm? Chemoecology 20: 155-162.

4. Degenhardt, J., Hiltpold, I., Köllner, T. G., Frey, M., Gierl, A., Gershenzon, J., Hibbard, B. E., Ellersieck, M. R. and Turlings, T. C. J. 2009. Restoring a maize root signal that attracts insect-killing nematodes to control a major pest. Proceedings of the National Academy of Sciences of the United States of America 106: 13213-13218.


3.Köllner, T. G., Held, M., Lenk, C., Hiltpold, I., Turlings, T. C. J., Gershenzon, J. and Degenhardta, J. 2008. A maize (E)-β-caryophyllene synthase implicated in indirect defense responses against herbivores is not expressed in most American maize varieties. Plant and Cell 20: 482-494.

2. Hiltpold, I. and Turlings, T. C. J. 2008. Belowground chemical signalling in maize: when simplicity rhymes with efficiency. Journal of Chemical Ecology 34: 628-635.


1. Rasmann, S., Köllner, T. G., Degenhardt, J., Hiltpold, I., Toepfer, S., Kuhlmann, U., Gershenzon, J. and Turlings, T. C. J. 2005. Recruitment of entomopathogenic nematodes by insect-damaged maize roots. Nature 434: 732-737.



Contact Information Ivan Hiltpold

Assistant Professor

Entomology and Wildlife Ecology
531 S. College Avenue
Townsend Hall
Newark, DE 19717
Phone: (302) 831-3975
Email: hiltpold@udel.edu