John Tooker
Research Summary
Research interests include insect-plant interactions in agricultural systems, chemical ecology, induced host-plant defenses, natural-enemy ecology, tritrophic interactions and gall-inducing insects.
In the News
Research Keywords
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Recent Publications
Managing pests by increasing predators through late termination of cover crops
Adam, J. S., Wallace, J. M. & Tooker, J. F., Sep 2026, In: Pest Management Science. 82, 9, p. 8477-8487 11 p.Research output: Contribution to journal › Article › peer-review
The functional role of ants in no-till cropping systems
Fajemisin, A. O., Suarez, A. V. & Tooker, J. F., 2026, (Accepted/In press) In: Pest Management Science.Research output: Contribution to journal › Review article › peer-review
A Volatile Cue From a Specialist Herbivore Primes Gene Expression Against Biotic Stress in Tall Goldenrod (Solidago altissima L.)
Witkowski, R. J., Sudol, L. A., Yip, E. C., Tooker, J. F. & Renner, T., Mar 2026, In: Plant, Cell and Environment. 49, 3, p. 1424-1438 15 p.Research output: Contribution to journal › Article › peer-review
Generative AI may bias crop protection advice away from agroecological approaches
Wyckhuys, K. A. G., Dangles, O., Krupke, C., Sanchez-Bayo, F., Tooker, J. F. & van den Brink, P. J., Aug 15 2026, In: Journal of Environmental Management. 415, 130669.Research output: Contribution to journal › Article › peer-review
Integrated pest management: State infrastructure status after 50 yr of Federal support (1973 to 2023)
Mueller, D. S., Iles, L. C., Pilcher, C. L., Sisson, A. J., Magarey, R., Adams, R., Almodovar, W. I., Alston, D., Beauzay, P., Bessin, R., Bish, M., Burrows, M., Calixto, A., Chandran, R., Colquhoun, J. B., Concklin, M., Dreves, A. J., Ellsworth, P. C., Esker, P. D. & Farrar, J. J. & 48 others, , 2025, In: Journal of Integrated Pest Management. 16, 1, 30.Research output: Contribution to journal › Article › peer-review
Two new species of Ormyrus Westwood (Hymenoptera: Ormyridae) from Cynipidae (Hymenoptera) galls on Silphium L. (Asteraceae: Heliantheae)
Nastasi, L. F., Davis, C. K., Alcorn, J. K., Frey, T. S., Hatfield, M. J., Hines, H. M., Tooker, J. F. & Deans, A. R., Mar 7 2025, In: Zootaxa. 5601, 2, p. 265-287 23 p.Research output: Contribution to journal › Article › peer-review
Acute toxicity of neonicotinoid insecticides to ground beetles (Coleoptera: Carabidae) from Pennsylvania
Pearsons, K. A. & Tooker, J. F., Jun 1 2025, In: Environmental entomology. 54, 3, p. 574-584 11 p.Research output: Contribution to journal › Article › peer-review
Insecticides may facilitate the escape of weeds from biological control
Rowen, E. K., Pearsons, K. A., Smith, R. G., Wickings, K. & Tooker, J. F., 2025, In: PeerJ. 13, 1, e18597.Research output: Contribution to journal › Article › peer-review
Feeding by slugs on maize imposes variable productivity costs but can induce compensatory growth under some conditions
Tooker, J. F., Boucher, M. T., Wallace, J. M. & Douglas, M. R., Dec 2025, In: Pest Management Science. 81, 12, p. 8419-8430 12 p.Research output: Contribution to journal › Article › peer-review
An insect pheromone primes tolerance of herbivory in goldenrod plants
Yip, E. C., Mescher, M. C., De Moraes, C. M. & Tooker, J. F., Jan 2025, In: Ecology. 106, 1, e4486.Research output: Contribution to journal › Article › peer-review
Does a shift to a novel host plant create a defence-free space for a specialist herbivore species?
Yip, E. C., Iverson, A. L., Anderson, T. E., Carlson, S. G., Nash, L. W. & Tooker, J. F., Aug 2025, In: Functional Ecology. 39, 8, p. 2085-2095 11 p.Research output: Contribution to journal › Article › peer-review
Seasonal bee communities vary in their responses to resources at local and landscape scales: implication for land managers
Kammerer, M., Iverson, A. L., Li, K., Tooker, J. F. & Grozinger, C. M., May 2024, In: Landscape Ecology. 39, 5, 97.Research output: Contribution to journal › Article › peer-review
Vertical tillage effects on crop production and pest management in Pennsylvania
Lefever, A. M., Wallace, J. M., White, C. M., Duiker, S. W., Esker, P. D. & Tooker, J., Mar 1 2024, In: Agronomy Journal. 116, 2, p. 520-530 11 p.Research output: Contribution to journal › Article › peer-review
Illuminating patterns of firefly abundance using citizen science data and machine learning models
McNeil, D. J., Goslee, S. C., Kammerer, M., Lower, S. E., Tooker, J. F. & Grozinger, C. M., Jun 15 2024, In: Science of the Total Environment. 929, 172329.Research output: Contribution to journal › Article › peer-review
Catalog of Endophytic Insects Associated with Rosinweeds (Silphium L., Heliantheae, Asteraceae) in North America
Nastasi, L. F., Smith, C. N., Tooker, J. F. & Deans, A. R., 2024, In: Psyche: Journal of Entomology. 2024, 8464635.Research output: Contribution to journal › Review article › peer-review
