John Tooker
Professor of Entomology
-
506 ASI
University Park, PA - jft11@psu.edu
- 814-865-1895
Huck Graduate Students
Huck Affiliations
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Pollen Bees Lipids Proteins Nutrition Ecology Bombus Pests Soybeans Insecticide Maize Slugs Seed Corn Neonicotinoid Pesticide Nutrients Zinc Galls Bee Cover Crops Plant Growth Regulators Herbivory Crop Seeds PlantingMost Recent Publications
Vertical tillage effects on crop production and pest management in Pennsylvania
Andrew Lefever, John M. Wallace, Paul Esker, Charles M. White, Charles White, Sjoerd W. Duiker, Sjoerd Duiker, Paul D. Esker, John Tooker, 2023, Journal of Production Agriculture on p. 520-530
Plant size, latitude, and phylogeny explain within-population variability in herbivory
M. L. Robinson, P. G. Hahn, B. D. Inouye, N. Underwood, S. R. Whitehead, K. C. Abbott, E. M. Bruna, N. I. Cacho, L. A. Dyer, L. Abdala-Roberts, W. J. Allen, J. F. Andrade, D. F. Angulo, D. Anjos, D Ansett, D. N. Anstett, R. Bagchi, S. Bagchi, M. Barbosa, S. Barrett, C. A. Baskett, E. Ben-Simchon, K. J. Bloodworth, K Blooworth, J. L. Bronstein, Y. M. Buckley, K. T. Burghardt, C. Bustos-Segura, E. S. Calixto, R. L. Carvalho, B. Castagneyrol, M. C. Chiuffo, D Cinoğlu, D. Cinolu, E. Cinto Mejía, M. C. Cock, R. Cogni, O. L. Cope, T. Cornelissen, D. R. Cortez, D. W. Crowder, C. Dallstream, W. Dáttilo, J. K. Davis, R. D. Dimarco, H. E. Dole, I. N. Egbon, M. Eisenring, A. Ejomah, B. D. Elderd, S. L. Hermann, M Endara, M Eubanks, M. F. Kersch-Becker, J. F. Tooker, S Everingham, K Farah, R Farias, A Fernandes, G Fernandes, M Ferrante, A Finn, G Florjancic, M Forister, Q Fox, E Frago, F França, A Getman-Pickering, Z Getman-Pickering, E Gianoli, B Gooden, M Gossner, K Greig, S Gripenberg, R Groenteman, P Grof-Tisza, N Haack, L Hahn, S Haq, A Helms, J Hennecke, S Hermann, L Holeski, S Holm, M Hutchinson, E Jackson, S Kagiya, A Kalske, M Kalwajtys, R Karban, R Kariyat, T Keasar, 2023, Science on p. 679–683
Comparative anatomy of venom glands suggests a role of maternal secretions in gall induction by cynipid wasps (Hymenoptera: Cynipidae)
Antoine Guiguet, John Tooker, Andrew R. Deans, Istvan Miko, István Mikó, Gang Ning, Szabina Schweger, Szabina Schwéger, Heather M. Hines, 2023, Insect Systematics and Diversity on p. 3
Abscisic Acid: A Potential Secreted Effector Synthesized by Phytophagous Insects for Host-Plant Manipulation
Stephannie Seng, Gabriela E. Ponce, Peter Andreas, Anna Kisiala, Rosemarie De Clerck-Floate, Donald G. Miller, Ming Shun Chen, Peter W. Price, John F. Tooker, R. J.Neil Emery, Edward F. Connor, 2023, Insects
New Information about Lizard Beetles (Coleoptera: Erotylidae: Languria angustata (Beauvois, 1805) and Languria mozardi Latreille, 1807) in Pennsylvania
Michael J. Skvarla, John Tooker, Adriana Murillo-Williams, 2023, Coleopterists Bulletin on p. 28-31
Extreme acidity in a cynipid gall: a potential new defensive strategy against natural enemies
Antoine Guiguet, Nathaniel McCartney, Kadeem Gilbert, John Tooker, Andrew Deans, Jared Gregory Ali, Heather M. Hines, 2023, Biology Letters on p. 20220513–20220513
Nematodes Associated with Terrestrial Slugs in Mid-Atlantic (Delaware, USA) Soybean
Brian Kunkel, William J. Cissel, John F. Tooker, Dana K. Howe, Dee R. Denver, Rory J. Mc Donnell, Ivan Hiltpold, 2023, Agronomy
The effect of zinc fertilizer on maize growth, leaf mineral nutrition, and caterpillar herbivory
Elizabeth K. Rowen, John F. Tooker, 2022, Arthropod-Plant Interactions on p. 525-535
Adverse effects of inbreeding on the transgenerational expression of herbivoreinduced defense traits in Solanum carolinense
Chad T. Nihranz, Anjel M. Helms, John F. Tooker, Mark C. Mescher, Consuelo M. De Moraes, Andrew G. Stephenson, 2022, PLoS One
Planted-green cover crops in maize/soybean rotations confer stronger bottom-up than top-down control of slugs
Marion Le Gall, Matthew Boucher, John F. Tooker, 2022, Agro-Ecosystems
Most-Cited Papers
A framework for evaluating ecosystem services provided by cover crops in agroecosystems
Meagan E. Schipanski, Mary Barbercheck, Margaret R. Douglas, Denise M. Finney, Kristin Haider, Jason P. Kaye, Armen R. Kemanian, David A. Mortensen, Matthew R. Ryan, John Tooker, Charlie White, 2014, Agricultural Systems on p. 12-22
Large-scale deployment of seed treatments has driven rapid increase in use of neonicotinoid insecticides and preemptive pest management in U.S. Field crops
Margaret R. Douglas, John F. Tooker, 2015, Environmental Science & Technology on p. 5088-5097
Biology, ecology, and management of brown marmorated stink bug (Hemiptera: Pentatomidae)
Kevin B. Rice, Chris J. Bergh, Erik J. Bergmann, Dave J. Biddinger, Christine Dieckhoff, Galen Dively, Hannah Fraser, Tara Gariepy, George Hamilton, Tim Haye, Ames Herbert, Kim Hoelmer, Cerruti R. Hooks, Ashley Jones, Greg Krawczyk, Thomas Kuhar, Holly Martinson, William Mitchell, Anne L. Nielsen, Doug G. Pfeiffer, Michael J. Raupp, Cesar Rodriguez-Saona, Peter Shearer, Paula Shrewsbury, P. Dilip Venugopal, Joanne Whalen, Nik G. Wiman, Tracy C. Leskey, John F. Tooker, 2014, Journal of Integrated Pest Management
Bee nutrition and floral resource restoration
Anthony Vaudo, John F. Tooker, Christina M. Grozinger, Harland M. Patch, 2015, Current Opinion in Insect Science on p. 133--141
Macronutrient ratios in pollen shape bumble bee (Bombus impatiens) foraging strategies and floral preferences
Anthony D. Vaudo, Harland M. Patch, David A. Mortensen, John F. Tooker, Christina M. Grozinger, 2016, Proceedings of the National Academy of Sciences of the United States of America on p. E4035-E4042
Neonicotinoid insecticide travels through a soil food chain, disrupting biological control of non-target pests and decreasing soya bean yield
Margaret R. Douglas, Jason R. Rohr, John F. Tooker, 2015, Journal of Applied Ecology on p. 250-260
Pollen protein: Lipid macronutrient ratios may guide broad patterns of bee species floral preferences
Anthony Vaudo, John Tooker, Harland M. Patch, David J. Biddinger, Michael Coccia, Makaylee Crone, Mark Fiely, Jacob Francis, Heather M. Hines, Mackenzie Hodges, Stephanie Jackson, Denis Michez, Junpeng Mu, Laura Russo, Maliheh Safari, Erin Treanore, Maryse Vanderplanck, E Yip, Anne Leonard, Christina M. Grozinger, 2020, Insects on p. 132
Phytohormone Dynamics Associated with Gall Insects, and their Potential Role in the Evolution of the Gall-Inducing Habit
John F. Tooker, Anjel M. Helms, 2014, Journal of Chemical Ecology on p. 742-753
Herbicide drift can affect plant and arthropod communities
J. Franklin Egan, Eric Bohnenblust, Sarah Goslee, David Mortensen, John Tooker, 2014, Agro-Ecosystems on p. 77-87
Bumble bees regulate their intake of essential protein and lipid pollen macronutrients
A. D. Vaudo, D. Stabler, H. M. Patch, J. F. Tooker, C. M. Grozinger, G. A. Wright, 2016, Journal of Experimental Biology on p. 3962--3970
News Articles Featuring John Tooker
Mar 16, 2024
Robert Miller: Environmentalists renew fight to limit use of neonicotinoids in CT
About neonicotinoids and why/how to limit the usage
Full Article
Oct 16, 2023
Grants awarded to Penn State faculty for tropical ecosystems research in Belize
Three projects have been awarded seed grants as part of the Penn State-Belize Foundation for Research and Environmental Education Research and Education Initiative to develop agroforestry systems .
Full Article
Apr 05, 2023
Why are snails and slugs so slow?
Wander through your backyard or walk along a stream and it’s likely you’ll see a snail – small, squishy animals with shells on their backs.
Full Article
Mar 01, 2023
Wasps harness power of pitcher plants in first-ever observed defense strategy
As the saying goes, “When life gives you lemons, turn that tartness into little translucent balls in which to grow your young.”
Full Article
Sep 05, 2022
A boy’s backyard discovery two years ago uncovered an incredibly intricate insect-plant interaction
A chance discovery by a professor’s son reveals a surprisingly complex interaction between plants and insects.
Full Article
Mar 21, 2022
The Fight to Save the Embattled Monarch Butterfly
In the depths of the Californian winter, an ember of hope has flickered for the monarch butterfly, the charismatic and beloved visitor that has seemingly been on a graceful descent into oblivion.
Full Article
Mar 09, 2022
EPA Expected to Extend Use of Bee-Killing Pesticides
The U.S. Environmental Protection Agency (EPA) is expected to approve a proposal to extend the use of four neonicotinoids for the next 15 years. These pesticides are known to be especially dangerous for essential pollinators, like bees and butterflies, and have been linked to the widespread decline of insect populations.
Full Article
Mar 08, 2022
Fears for bees as US set to extend use of toxic pesticides that paralyse insects
The US Environmental Protection Agency is poised to allow the use of four of the most devastating chemicals to bees, butterflies and other insects to continue in America for the next 15 years, despite moves by the European Union to ban the use of toxins that have been blamed for widespread insect declines.
Full Article
Feb 22, 2022
Farmers are overusing insecticide-coated seeds, with mounting harmful effects on nature
Planting season for corn and soybeans across the U.S. will begin as soon as March in Southern states and then move north. As farmers plant, they will deploy vast quantities of insecticides into the environment, without ever spraying a drop.
Full Article
Apr 05, 2021
US Pesticide Use Is Down, but Damage to Pollinators Is Rising
The use of pesticides has decreased in the US by more than 40 percent since 1992, but the emergence of more-potent chemicals means that they are far more damaging to many species.
Full Article