John Tooker

Affiliate Researcher
Titles and Affiliations
Professor, Entomology

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

Comparative anatomy of venom glands suggests a role of maternal secretions in gall induction by cynipid wasps (Hymenoptera: Cynipidae)

Guiguet, A., Tooker, J. F., Deans, A. R., Miko, I., Ning, G., Schweger, S. & Hines, H. M., Sep 1 2023, In: Insect Systematics and Diversity. 7, 5, 3.

Research output: Contribution to journalArticlepeer-review

Extreme acidity in a cynipid gall: a potential new defensive strategy against natural enemies

Guiguet, A., McCartney, N. B., Gilbert, K. J., Tooker, J. F., Deans, A. R., Ali, J. G. & Hines, H. M., Mar 1 2023, In: Biology Letters. 19, 3, 20220513.

Research output: Contribution to journalArticlepeer-review

Nematodes Associated with Terrestrial Slugs in Mid-Atlantic (Delaware, USA) Soybean

Kunkel, B., Cissel, W. J., Tooker, J. F., Howe, D. K., Denver, D. R., Mc Donnell, R. J. & Hiltpold, I., Mar 2023, In: Agronomy. 13, 3, 645.

Research output: Contribution to journalArticlepeer-review

Abscisic Acid: A Potential Secreted Effector Synthesized by Phytophagous Insects for Host-Plant Manipulation

Seng, S., Ponce, G. E., Andreas, P., Kisiala, A., De Clerck-Floate, R., Miller, D. G., Chen, M. S., Price, P. W., Tooker, J. F., Emery, R. J. N. & Connor, E. F., Jun 2023, In: Insects. 14, 6, 489.

Research output: Contribution to journalArticlepeer-review

New Information about Lizard Beetles (Coleoptera: Erotylidae: Languria angustata (Beauvois, 1805) and Languria mozardi Latreille, 1807) in Pennsylvania

Skvarla, M. J., Tooker, J. & Murillo-Williams, A., Mar 17 2023, In: Coleopterists Bulletin. 77, 1, p. 28-31 4 p.

Research output: Contribution to journalArticlepeer-review

Plant size, latitude, and phylogeny explain within-population variability in herbivory

The Herbivory Variability Network, Nov 1 2023, In: Science. 382, 6671, p. 679-683 5 p.

Research output: Contribution to journalArticlepeer-review

Insecticide-contaminated honeydew: risks for beneficial insects

Calvo-Agudo, M., Tooker, J. F., Dicke, M. & Tena, A., Apr 2022, In: Biological Reviews. 97, 2, p. 664-678 15 p.

Research output: Contribution to journalArticlepeer-review

More phylogenetically diverse polycultures inconsistently suppress insect herbivore populations

Coco, A. M., Yip, E. C., Kaplan, I. & Tooker, J. F., Apr 2022, In: Oecologia. 198, 4, p. 1057-1072 16 p.

Research output: Contribution to journalArticlepeer-review

Planted-green cover crops in maize/soybean rotations confer stronger bottom-up than top-down control of slugs

Le Gall, M., Boucher, M. & Tooker, J. F., Aug 15 2022, In: Agriculture, Ecosystems and Environment. 334, 107980.

Research output: Contribution to journalArticlepeer-review

Adverse effects of inbreeding on the transgenerational expression of herbivoreinduced defense traits in Solanum carolinense

Nihranz, C. T., Helms, A. M., Tooker, J. F., Mescher, M. C., De Moraes, C. M. & Stephenson, A. G., Oct 2022, In: PloS one. 17, 10 October, e0274920.

Research output: Contribution to journalArticlepeer-review

Early-season plant cover supports more effective pest control than insecticide applications

Rowen, E. K., Pearsons, K. A., Smith, R. G., Wickings, K. & Tooker, J. F., Jul 2022, In: Ecological Applications. 32, 5, e2598.

Research output: Contribution to journalArticlepeer-review

The effect of zinc fertilizer on maize growth, leaf mineral nutrition, and caterpillar herbivory

Rowen, E. K. & Tooker, J. F., Oct 2022, In: Arthropod-Plant Interactions. 16, 5, p. 525-535 11 p.

Research output: Contribution to journalArticlepeer-review

Oak Galls Exhibit Ant Dispersal Convergent with Myrmecochorous Seeds

Warren, R. J., Guiguet, A., Mokadam, C., Tooker, J. F. & Deans, A. R., Aug 2022, In: American Naturalist. 200, 2, p. 292-301 10 p.

Research output: Contribution to journalComment/debatepeer-review

Wheat intraspecific diversity suppressed diseases with subdued yield, economic return and arthropod predation services

Baniszewski, J., Burton, A., Kemanian, A. R., Roth, G. & Tooker, J., Aug 1 2021, In: Agriculture, Ecosystems and Environment. 315, 107438.

Research output: Contribution to journalArticlepeer-review

Are polycultures for silage pragmatic medleys or gallimaufries?

Burton, A. B., Baniszewski, J., Roth, G. W., Tooker, J. F. & Kemanian, A. R., Mar 1 2021, In: Agronomy Journal. 113, 2, p. 1205-1221 17 p.

Research output: Contribution to journalArticlepeer-review