John Tooker, Ph.D.
- Professor of Entomology
- Director of Graduate Studies
- Coordinator of Entomology minor
and 113 Merkle Lab
University Park, PA 16802
- Email tooker@psu.edu
- Office 814-865-7082
Areas of Expertise
- Insect ecology
- Plant-insect interactions
- Conservation biological control
- Chemical ecology
- Gall insects
Websites
Education
- B.S. - Bates College, 1992
- M.S. - University of Illinois at Urbana-Champaign, 1999 (advisor: Larry Hanks)
- Ph.D. - University of Illinois at Urbana-Champaign, 2003 (advisor: Larry Hanks)
- Postdoctoral scholar, Penn State, 2003-2008 (advisor: Consuelo De Moraes)
- Fulbright Scholar, 2017-2018, Institut de Recherche sur la Biologie de l'Insecte, University of Tours, France.
Media coverage - Read some of the news coverage our work has received!
Lab staff members
Dr. Eric Yip (PhD, Cornell), Assistant Research Professor, Ecology of plant-insect interactions
John Sauter, research assistant
Current graduate students
- Francesca Ferguson, PhD student in Ecology (co-advised by Heather Preisendanz)
- B.S., Environmental Chemistry, Juniata College
- Daniel Bliss, MS student
- B.S., Biology, Ursinus College
- Jared Adam, MS student
- B.S., Plant Science, The Pennsylvania State University
- Robert Witkowski, PhD student in Plant Biology (co-advised by Tanya Renner)
- B.S., Plant Biology, University of Nebraska
- Alexela Hoyt
- B.S., Ecology and Evolutionary Biology, University of Connecticut
Current undergraduate students
- We are currently looking for undergraduate assistants. Please get in touch with Tooker if interested
Former undergraduate helpers: Ken, Jen, Kyra, Dan (L to R) enjoying some gall collecting!
Former graduate students
Eric Bohenblust, PhD student, Graduated 2014
(Current position: US EPA)
- EPA STAR Graduate Fellowship
- John Henry Comstock Award from Entomological Society of America
- Asa Fitch Award from Entomological Society of America
Ian Grettenberger, PhD student, Graduated 2015
(Current position: Assistant Professor, Univ. California, Davis)
- USDA NIFA Graduate Fellowship recipient
- USDA NE-SARE Graduate Fellowship recipient
- Sigma Xi Grant-in-Aid of Research recipient
Anjel Helms, PhD student, Graduated 2015 (Ecology Program; co-advised with Mark Mescher)
(Current position: Assistant Professor of Entomology, Texas A&M)
- NSF Graduate Fellowship recipient
- PSU Alumni Association Dissertation Award
Maggie Douglas, MS student, Graduated 2012; PhD student, Graduated 2016
(Current position: Assistant Professor, Dickinson College)
- USDA Borlaug Fellowship recipient
- USDA NE-SARE Graduate Fellowship recipient
- Asa Fitch Memorial Award for Best Masters Student, Eastern Branch of the Entomological Society of America, 2012
- Sigma Xi Grant-in-Aid of Research recipient
Anna Busch, MS student, Graduated 2016
(Current position: Agronomy Extension Educator, Union County, PA)
- B.S., Plant Biology - Michigan State University
Anthony Vaudo, PhD student (co-advised with Christina Grozinger), Graduated 2016
(Current position: Postdoc, Leonard Lab, Dept. of Biology, University of Nevada, Reno)
- M.S., Entomology, University of Florida
- USDA NIFA Graduate Fellowship recipient
- Recipient of North American Pollinator Protection Campaign Bee Health Improvement Project Grant
- Sigma Xi Grant-in-Aid of Research recipient
Angela Coco, MS student, Graduated 2019
(Current position: Product Development Engineer, Hercon Environmental)
- B.S., Environmental Science - King's College
Sarah McTish, MS student, Graduated 2019
(Current position: Extension Educator, Penn State Extension, Berks County, PA)
- B.S., Agricultural Science - Penn State
Kirsten Pearsons, PhD student, Graduated 2020
(Current position:IPM Advisor, University of California Cooperative Extension )
- B.S., Environmental Toxicology - University of California, Davis
- USDA NE-SARE Graduate Fellowship recipient
Elizabeth Rowen, PhD student, Graduated 2020
(Current position: Assistant Professor of Entomology, West Virginia University)
- M.S., Entomology - Purdue University
- USDA NIFA Graduate Fellowship recipient
- USDA NE-SARE Graduate Fellowship recipient
Melanie Kammerer Allen, PhD student, Graduated 2020 (Ecology Program; co-advised with Christina Grozinger)
(Current position: SCINet Postdoctoral Fellow, USDA-ARS, University Park, PA)
- M.S., Ecology - Penn State
- USDA NIFA Graduate Fellowship recipient
Julie Golinski, MS student, Graduated 2020
(Current position: Associate Entomologist, FMC Corp.)
- B.S., Washington College
Julie Baniszewski, PhD student, Graduated 2021
(Current position: Postdoctoral Scientist, USDA-ARS)
- M.S., Plant And Soil Science - University of Kentucky
- USDA NE-SARE Graduate Fellowship recipient
Former postdoctoral researchers
- Dr. Kevin Rice (PhD, Ohio State) - Ecology of brown marmorated stink bug (Current position: Associate Professor and Director of the Alson H Smith Jr. Agricultural Research and Extension Center, Virginia Tech)
- Dr. Anjel Helms (PhD, Penn State) - Ecology of plant-insect interactions in Solidago (Current position: Assistant Professor of Entomology, Texas A&M)
- Dr. Marion Le Gall (PhD, Texas A&M) - Ecological control of slugs in no-till crop fields (Current position: Assistant Research Professor, Arizona State University)
- Dr. Kirsten Pearsons (PhD, Penn State) - Ecotoxicology of invertebrates in no-till crop fields
- Dr. Matthew Boucher (PhD, Cornell) - Ecology of invertebrate pests in no-till, cover cropped fields, Precision Sustainable Agriculture (Current position: Soil Scientist, Maine Dept. of Ag)
Former undergraduate researchers
Lasair Ni Chochlain, B.S. Penn State Schreyer Honors College, Graduated 2021
Hayden Bock, B.S. Penn State, Graduated 2020
Sarah McTish, B.S. Penn State, Graduated 2017
Allie Shoffner, B.S. Penn State Schreyer Honors College, Graduated 2012
Former Lab managers
Andrew Aschwanden
Sarah Kossak
Departmental focus areas
Chemical Ecology
Ecological Applications
Research
Insect-plant interactions in agricultural systems, chemical ecology, induced host-plant defenses, natural-enemy ecology, tritrophic interactions, gall-inducing insects
Word clouds built from batches of recent abstracts
(These clouds give a sense of our research areas/themes/systems. The size of the word is proportional to the frequency of its use in the abstracts; from wordle.com):
2017
2014
2011
Publications
Nihranz, C. T., A. M. Helms, J. F. Tooker, M. C. Mescher, C. M. De Moraes, and A. G. Stephenson. Adverse effects of inbreeding on the transgenerational expression of herbivore-induced defence traits in Solanum carolinense. PLOS One, 17: e0274920.
Rowen, E. K., and J. F. Tooker. Small increases of zinc fertilizer boost maize leaf nitrogen, increasing fall armyworm (Spodoptera frugiperda) performance in the greenhouse, but effect does not translate to the field. Arthropod-Plant Interactions 16(5). DOI:10.1007/s11829-022-09904-1
Le Gall, M., M. Boucher, and J. F. Tooker. 2022. Planted-green cover crops in maize/soybean rotations confer stronger bottom-up than top-down control of slugs. Agriculture, Ecosystems and Environment 334: 107980.
Coco, A. M., E. C. Yip, I. Kaplan, and J. F. Tooker. 2022. More phylogenetically diverse polycultures inconsistently suppress insect herbivore populations. Oecologia 198: 1057–1072.
Warren, R. J., A. Guiguet, C. Mokadam, J. F. Tooker, and A. R. Deans. 2022. Convergence between ant-mediated seed dispersal and newly discovered gall dispersal. American Naturalist: 200: 292-301.
Rowen, E. K., K. A. Pearsons, R. G. Smith, K. Wickings, J. F. Tooker. 2022. Do pesticide seed coatings diminish the promise of conservation agriculture? Ecological Applications 32: e2598 Available online: http://dx.doi.org/10.1002/eap.2598
Calvo Agudo, M., J. F. Tooker, M. Dicke, and A. Tena. 2021. Insecticide-contaminated honeydew: risks for beneficial insects. Biological Reviews, Biological Reviews 97:664-678.
Pearsons, K. A., S. Lower, and J. F. Tooker. Toxicity of clothianidin to common Eastern North American fireflies. PeerJ 9:e12495 https://doi.org/10.7717/peerj.12495.
Busch, A. K. B. Ezray, and J. F. Tooker. Life History, Biology, and Distribution of Pterostichus melanarius (Coleoptera: Carabidae) in North America. Environmental Entomology 50:1257-1266. doi:10.1093/ee/nvab090.
Johnston-Fennell, L., J. F. Tooker, B. Nault, and K. Wickings. 2021. Preventative pest management in field crops influences the biological control potential of epigeal arthropods and soil-borne entomopathogenic fungi. Field Crops Research 272:108265.
Baniszewski, J, A. Burton, A. R. Kemanian, G. W. Roth, and J. F. Tooker. 2021. Wheat intraspecific diversity suppressed diseases with subdued economic and ecosystem services benefits. Agriculture, Ecosystems and Environment, 315: 107438.
Pearsons, K. A., E. K. Rowen, K. Elkin, K. Wickings, R. Smith, and J. F. Tooker. Neonicotinoids from seed coatings persistently contaminate adjacent no-till fields, despite mitigation efforts. Environmental Science & Technology 55: 4679-4687.
Tooker, J. F. and K. A. Pearsons. 2021. Newer characters, same story: neonicotinoid insecticides disrupt food webs through direct and indirect effects. Current Opinion in Insect Science 46: 50-56.
Yip, E. C., I. Mikó, J. M. Ulmer; N. A. Cherim; M. A. Townley; S. Poltak, A. M. Helms, C. M. De Moraes; M. C. Mescher, and J. F. Tooker. 2021. Giant polyploid epidermal cells and male pheromone production in the tephritid fruit fly Eurosta solidaginis (Diptera: Tephritidae). Journal of Insect Physiology 130: 104210.
Burton, A. B., J. Baniszewski, G. W. Roth, J. F. Tooker, and A. R. Kemanian. 2021. Are polycultures for silage pragmatic medleys or gallimaufries? Agronomy Journal 113: 1205-1221.
Hammer, T. J., R. De Clerck-Floate, J. F. Tooker, P. W. Price, D.G. Miller III, and E. F. Connor. 2021. Are bacterial symbionts associated with gall induction in insects? Arthropod-Plant Interactions 15: 1-12.
Frame, S. T., K. A. Pearsons, K. R. Elkin, L. S. Saporito, H. E. Preisendanz, H. D. Karsten, and J. F. Tooker. 2021. Assessing surface and subsurface transport of neonicotinoid insecticides from crop fields. Journal of Environmental Quality 50: 476-484.
Kammerer, M., S. Goslee, M. R. Douglas, J. F. Tooker, and C. M. Grozinger. 2021. Shifting norms: wild bees as winners and losers of land use and climate change. Global Change Biology 27: 1250-1265.
Krupke, C. and Tooker, J.F., 2020. Beyond the headlines: the influence of insurance pest management on an unseen, silent entomological majority. Frontiers in Sustainable Food Systems 4: 251. https://doi.org/10.3389/fsufs.2020.595855
Tooker, J. F., and D. Giron. 2020. The evolution of endophagy in herbivorous insects. Frontiers of Plant Science 11: 581816.
Rowen, E. K., and J. F. Tooker. 2020. Ground predator activity-density and predation rates are weakly supported by dry-stack cow manure and wheat cover crops in no-till maize. Environmental Entomology 50: 46-57.
Frank, S. D. and J. F. Tooker. 2020. Opinion: Neonicotinoids pose undocumented threats to food webs. Proceedings of National Academy of Science USA, 117: 22609-22613.
Coco, A. M., M. T. Lewis, S. J. Fleischer, and J. F. Tooker. 2020. Parasitoids, nematodes, and protists in populations of striped cucumber beetle, Acalymma vittatum (Coleoptera: Chrysomelidae). Environmental Entomology 49: 1316–1326.
Pearsons, K. A., and J. F. Tooker. 2021. Preventative insecticide use affects arthropod decomposers and decomposition in field crops. Applied Soil Ecology 157: 103757.
Kirkpatrick, D. M., K. B. Rice, A. Ibrahim, S. J. Fleischer, J. F. Tooker, A. Tabb, H. Medeiros, W. R. Morrison III, and T. C. Leskey. 2020. The influence of marking methods on mobility, survivorship and field recovery of Halyomorpha halys adults and nymphs (Hemiptera: Pentatomidae). Environmental Entomology 49: 1026–1031.
Kammerer, M., J. F. Tooker, and C. M. Grozinger. 2020. A long-term dataset on wild bee abundance in Mid-Atlantic United States. Scientific Data 7: 240.
Yip, E., C. M. De Moraes, J. F. Tooker, M. C. Mescher. 2020. Sensory coevolution: The sex attractant of a gall-making fly primes plant defences, but female flies recognize resulting changes in host-plant quality. Journal of Ecology 109: 99-108.
Vaudo, A. D., J. F. Tooker, H. Patch, D. Biddinger, M. Coccia, M. Crone, M. Fiely, J. Francis, H. Hines, M. Hodges, S. Jackson, D. Michez, J. Mu, L. Russo, M. Safari, E. Treanore, M. Vanderplanck, E. Yip, A. Leonard, and C. Grozinger. 2020. Pollen macronutrient ratios guide broad patterns of bee species floral. Insects 11(2): E132.
Andreas, P., A. Kisiala, R.J.N. Emery, R. De Clerck-Floate, J. F. Tooker, P. W. Price, D. G. Miller III, M.-S. Chen, and E. F. Connor. 2020. Cytokinins are abundant and widespread among insect species. Plants 9: 2.
Rowen, E. K., K. Regan, M. E. Barbercheck, and J. F. Tooker. 2020. Is Tillage Beneficial or Detrimental for Invertebrate Pest Management? A Meta-Analysis. Agriculture, Ecosystems & Environment, in press.
Busch, A. K., M. R. Douglas, G. M. Malcolm, H. D. Karsten, and J. F. Tooker. 2020. A high-diversity/IPM cropping system fosters beneficial arthropod populations, limits invertebrate pests, and produces competitive corn yields. Agriculture, Ecosystems & Environment, in press.
Grettenberger, I. M. and J. F. Tooker. 2020. Variety mixtures of soybeans have inconsistent effects on herbivore and natural-enemy populations. Agriculture, Ecosystems and Environment, in press.
Tooker, J. F., M. E. O'Neal, C. Rodriguez-Saona. 2020. Balancing disturbance and conservation in agroecosystems to improve biological control. Annual Review of Entomology 65: 81-100.
Jones, A. G., K. Hoover, K. Pearsons, J. F. Tooker, and G. W. Felton. 2019. Potential impacts of translocation of neonicotinoid insecticides to cotton (Gossypium hirsutum [Malvales: Malvaceae]) extrafloral nectar on parasitoids" Environmental Entomology, in press. Available online: doi.org/10.1093/ee/nvz157
Walter, J. A., L. W. Sheppard, P. D. Venugopal, D. C. Reuman, G. Dively, J. F. Tooker, and D. M. Johnson. 2019. Weather and crop composition drive spatial synchrony of lepidopteran agricultural pests. Ecological Entomology, in press. Available online: doi.org/10.1111/een.12830
Rowen, E. K., and J. F. Tooker. 2019. Manure decreases herbivore performance but increases early-season damage on corn in the greenhouse and field. Environmental Entomology, in press. Available online: doi.org/10.1093/ee/nvz145
Reed, H., W. Curran, J. Tooker, S. Duiker, and H. Karsten. 2019. Planting green effects on corn and soybean production. Agronomy Journal 111: 2314-2325.
Acevedo, F. E., P. Smith, M. Peiffer, A. M. Helms, J. F. Tooker, and G. W. Felton. 2019. Phytohormones in fall armyworm saliva modulate defense responses in plants. Journal of Chemical Ecology 45: 598–609.
Yip, E., J. F. Tooker, M. C. Mescher, and C. M. De Moraes. 2019. Costs of plant defense priming: Exposure to volatile cues from a specialist herbivore alters growth in tall goldenrod, implications for plant fitness. BMC Plant Biology 19: 209.
Rowen, E. K., J. F. Tooker, and C. Blubaugh. 2019. Soil fertility management to promote arthropod pest suppression. Invited manuscript, Biological Control 134: 130-140.
Yip, E., R. P. Sowers, A. M. Helms, M. C. Mescher, C. M. De Moraes, and J. F. Tooker. 2019. Tradeoffs between defenses against different specialist herbivores in goldenrod (Solidago altissima). Invited manuscript. Arthropod-Plant Interactions 13: 279-287.
Helms, A. M., S. Ray, N. Matulis, Nina, M. Kuzemchak, W. Grisales, J. F. Tooker, and J. Ali. 2019. Chemical cues from belowground natural enemies enhance plant defences and influence herbivore behaviour and performance. Functional Ecology 33: 798-808.
Douglas, M. R., J. Chang, K. Begum, S. Subramanian, J. F. Tooker, S. Nurul Alam, S. Ramasamy. 2019. Evaluation of biorational insecticides and DNA barcoding as tools to improve insect pest management in lablab bean (Lablab purpureus) in Bangladesh. Journal of Asia-Pacific Entomology 21: 1326-1336. https://doi.org/10.1016/j.aspen.2018.10.007
Zemenick, A. T., R. R. Kula, L. Russo, and J. F .Tooker. 2019. A network approach reveals parasitoid wasps to be generalized nectar foragers. Arthropod-Plant Interactions 13: 239-251; available online: doi.org/10.1007/s11829-018-9642-9
Harth, J. E., M. E. Ferrari, A. M. Helms, J. F. Tooker, A. G. Stephenson. 2018. Viral infection limits establishment and severity of a powdery mildew in wild populations of Cucurbita pepo. Frontiers in Plant Science 9: 792.
Walter, J., A. Ives, J. F. Tooker, D, M. Johnson. 2018. Life history and habitat explain variation among insect pest populations subject to global change. Ecosphere 9: e02274.
Vaudo, A. D., L. M. Farrell, H. M. Patch, C. M. Grozinger, and J. F. Tooker. 2018. Consistent pollen nutritional intake drives bumble bee (Bombus impatiens) colony growth and reproduction across different habitats. Ecology and Evolution 8: 5765-5776.
Abbot, P., J. F. Tooker, and S. Lawson. 2018. Chemical ecology and sociality in aphids: opportunities and directions. Journal of Chemical Ecology 44: 770-784.
Tooker, J. F., M. R. Douglas, C. Krupke. 2017. Neonicotinoid seed treatments: limitations and compatibility with Integrated Pest Management. Agricultural & Environmental Letters 2(1), DOI: 10.2134/ael2017.08.0026.
Russo, L, A. Miller, J. F. Tooker, O. Bjornstad, and K. Shea. Quantitative evolutionary patterns in mutualistic networks: Vicariance, phylogenetic tracking, or coevolution? Methods in Ecology and Evolution, in press. DOI: 10.1111/2041-210X.12914
Castano-Duque, L., K. Loades, J. F. Tooker, K. Brown, W. P. Williams, and D. S. Luthe. A maize inbred exhibits resistance against western corn rootwoorm, Diabrotica virgifera virgifera. Journal of Chemical Ecology, in press.
Pearsons, K., I. and J. F. Tooker. 2017. In-field habitat management to optimize pest control of novel soil communities in agroecosystems, Insects 8(3):82. DOI: 10.3390/insects8030082.
Helms, A. M., C. M. De Moraes, A. Tröger, H. T. Alborn, W. Francke, J. F. Tooker, M. C. Mescher. 2017. Identification of an insect-produced olfactory cue that primes plant defenses. Nature Communications 8: 337. DOI:10.1038/s41467-017-00335-8
Le Gall, M., and J. F. Tooker. Developing ecologically based pest management programs for terrestrial molluscs. Journal of Pest Science 90: 825–838.
Pearsons, K., I. Mikó, J. F. Tooker. 2017. The cyanide gland of the greenhouse millipede, Oxidus gracilis (Polydesmida: Paradoxosomatidae). Research Ideas and Outcomes 3: e12249. DOI: 10.3897/rio.3.e12249.
Yip, E., C. M. De Moraes, M. C. Mescher, J. F. Tooker. 2017. The volatile emission of a specialist herbivore alters patterns of plant defence, growth and flower production in a field population of goldenrod (Solidago altissima). Functional Ecology 31: 1062–1070. DOI: 10.1111/1365-2435.12826
Koch, R., B. Potter, P. Glogoza, E. Hodgson, C. Krupke, J. Tooker, C. DiFonzo, A. Michel, K. Tilmon, T. Prochaska, J. Knodel, R. Wright, T. Hunt, B. Jensen, A. Varenhorst, B. McCornack, K. Estes, J. Spencer. 2016. Biology and economics of recommendations for insecticide-based management of soybean aphid. Plant Health Progress 17: 265-269.
Douglas, M. R., and J. F. Tooker. 2016. Meta-analysis reveals that neonicotinoid seed treatments and pyrethroids have similar negative effects on abundance of arthropod natural enemies. PeerJ 4:e2776.
Vaudo, A. D., D. Stabler, H. M. Patch, J. F. Tooker, C. M. Grozinger, and G. A. Wright. 2016. Bumble bees regulate their intake of the essential protein and lipid pollen macronutrients. Journal of Experimental Biology 219: 3962-3970.
Grettenberger, I. M., and J. F. Tooker. 2016. Variety mixtures of wheat influence aphid populations and attract an aphid predator. Arthropod-Plant Interactions, in press. Available online: DOI: 10.1007/s11829-016-9477-1.
Rice, K. B., R. Troyer, K. M. Watrous, J. F. Tooker, and S. J. Fleischer. 2016. Landscape factors influencing stink bug damage in agricultural systems following the introduction of the brown marmorated stink bug (Hemiptera: Pentatomidae). Journal of Economic Entomology, in press. Available online: doi: 10.1093/jee/tow252.
Vaudo, A. D., H. M. Patch, D. A. Mortensen, J. F. Tooker, C. M. Grozinger. 2016. Macronutrient ratios in pollen shape bumble bee (Bombus impatiens) foraging strategies and floral preferences. Proceedings of National Academy of Science USA, 113:E4035-42. Available online: doi: 10.1073/pnas.1606101113.
Campbell C., L. Russo, A. Marins, O. DeSouza, K. Schönrogge, D. Mortensen, J. F. Tooker, R. Albert, and K. Shea. 2016. Top-down network analysis characterizes hidden termite–termite interactions. Ecology and Evolution, in press. doi:10.1002/ece3.2313.
Walls, J. T, P. Caciagli, J. F. Tooker, J. M. Russo, E. G. Rajotte, C. Rosa. 2016. Modeling the decision process for barley yellow dwarf management. Computers and Electronics in Agriculture 127: 775–786.
Grettenberger, I. M. and J. F. Tooker. 2016. Inter-varietal interactions among plants in genotypically diverse mixtures tend to decrease herbivore performance.Oecologia 182: 189-202 (available online: doi:10.1007/s00442-016-3651-0).
Bohnenblust, E. W., A. D. Vaudo, J. F. Egan, D. A. Mortensen, and J. F. Tooker. 2016. Effects of the herbicide dicamba on non-target plants and pollinator visitation. Environmental Toxicology and Chemistry 35(1):144–151. DOI: 10.1002/etc.3169
Rice, K. B., S. J. Fleischer, C. M. De Moraes, M. C. Mescher, J. F. Tooker, and M. Gish. 2015. Handheld lasers allow efficient detection of fluorescent marked organisms in the field. PLoS ONE 10(6): e0129175. doi:10.1371/journal.pone.0129175.
Ray, S., I. Gaffor, F. Acevedo, A. M. Helms, W.-P. Chuang, J.F. Tooker, G. W. Felton, D. S. Luthe. 2015. Maize plants recognize herbivore-associated cues from caterpillar frass. Journal of Chemical Ecology 41: 781–792.
Vaudo, A. D., J. F. Tooker, C. M. Grozinger, and H. M. Patch. 2015. Bee nutrition and floral resource restoration. Current Opinion in Insect Science 10: 133–141. DOI:dx.doi.org/10.1016/j.cois.2015.05.008
Grettenberger, I. M., and J. F. Tooker. 2015. Moving beyond resistance management toward an expanded role for seed mixtures in agriculture. Agriculture, Ecosystems and Environment 208: 29–36. DOI:10.1016/j.agee.2015.04.019
Douglas, M. R., and J. F. Tooker. 2015. Large-Scale Deployment of Seed Treatments Has Driven Rapid Increase in Use of Neonicotinoid Insecticides and Preemptive Pest Management in U.S. Field Crops. Environ. Sci. Technol. 49(8): 5088–5097, DOI: 10.1021/es506141g.
Douglas, M. R., J. R. Rohr, and J. F. Tooker. 2015. Neonicotinoid insecticide travels through a soil food chain, disrupting biological control of non-target pests and decreasing soybean yield. Journal of Applied Ecology 52: 250–260. (Editor's Choice article and image from the article featured on the cover, DOI: 10.1111/1365-2664.12372; and read our Research Brief on the topic, and a related post in the blog of the Journal of Applied Ecology.)
Glenna, L., Tooker, J. F., Welsh, R., Ervin, D. Intellectual property, scientific independence, and the efficacy and environmental impacts of genetically engineered crops. Rural Sociology 80 (2): 147–172.
**Selected The 2015 Paper of the Year in Rural Sociology**
Tooker, J. F., and A. M. Helms. 2014. Phytohormone dynamics associated with gall insects, and their potential role in the evolution of the gall-inducing habit. Journal of Chemical Ecology 40:742-753.
Helms, A. M., C. M. De Moraes, M. C. Mescher, and J. F. Tooker. 2014. The volatile emission of Eurosta solidaginis primes herbivore-induced volatile production in Solidago altissima and does not directly deter insect feeding. BMC Plant Biology 14:173
Vaudo, A. D., H. M. Patch, D. A. Mortensen, C. M. Grozinger, and J. F. Tooker. 2014. Bumble bees exhibit daily behavioral patterns in pollen foraging. Arthropod-Plant Interactions 8: 273-283.
Rice, K., C. Bergh, E. Bergmann, D. Biddinger, C. Dieckhoff, G. Dively, H. Fraser, T. Gariepy, G. Hamilton, T. Haye, A. Herbert, K. Hoelmer, C. Hooks, A. Jones, G. Krawczyk, T. Kuhar, H. Martinson, W. Mitchell, A. Nielsen, D. Pfeiffer, M. Raupp, C. Rodriguez-Saona, P. Shearer, P. Shrewsbury, D. Venugopal, J. Whalen, N. Wiman, T. Leskey, J. Tooker. 2014. Biology, ecology, and management of brown marmorated stink bug (Halyomorpha halys). Journal of Integrated Pest Management 5:A1-A13.
McCarville. M. T., M. E. O'Neal, B. D. Potter, K. J. Tilmon, E. M. Cullen, B. P. McCornack, J. F. Tooker, and D. A. Prischmann-Voldseth. 2014. One gene versus two: a regional study on the efficacy of single gene versus pyramided resistance for soybean aphid management. Journal of Economic Entomology 107(4):1680-1687.
Toth, A. L., J. F. Tooker, S. Radhakrishnan, R. Minard, M. T. Henshaw, C. M. Grozinger. Shared genes related to aggression, rather than chemical communication, are associated with reproductive dominance in paper wasps (Polistes metricus). BMC Genomics 15:75 doi:10.1186/1471-2164-15-75
Egan, J. F., E. W. Bohnenblust, S. Goslee, D. A. Mortensen, and J. F. Tooker. 2014. Herbicide drift affects plant and arthropod communities. Agriculture, Ecosystems, and Environment 185: 77–87.
Bohnenblust, E. W., J. A. Breining, J. A. Shaffer, S. J. Fleischer, G. W. Roth, and J. F. Tooker. 2014. Current European corn borer, Ostrinia nubilalis, injury levels in the Northeastern US and the value of Bt field corn. Pest Management Science 70: 1711-1719. DOI: 10.1002/ps.3712.
Schipanski, M. E., M. Barbercheck, M. R. Douglas, D. M. Finney, K. Haider, J. P. Kaye, A. R. Kemanian, D. A. Mortensen, M. R. Ryan, J. F. Tooker, and C. White. 2014. A conceptual framework for evaluating ecosystem services provided by cover crops in agroecosystems. Agricultural Systems 125: 12-22.
Chung, S. H., C. Rosa, E. D. Scully, M. Peiffer, J. F. Tooker, K. Hoover, D. S. Luthe, and G. W. Felton. 2013. Herbivore exploits orally secreted bacteria to suppress plant defenses. Proceedings of the National Academy of Science, USA 110: 15728-15733.
Bohnenblust, E. W., J Breining, G. W. Roth, and J. F. Tooker. 2013. Corn pith weevil, Geraeus penicillus (Coleoptera: Curculionidae), in transgenic, insect-resistant and conventional field corn hybrids. Journal of Applied Entomology 137: 668-672.
Bohnenblust, E. W., J Breining, S. J. Fleischer, G. W. Roth, and J. F. Tooker. 2013. Corn earworm in Northeastern field corn: pest threat and the value of transgenic hybrids. Journal of Economic Entomology 106 (3): 1250-1259.
Bohnenblust, E., Egan, J.F., Mortensen, D.M., Tooker, J. 2013. Direct and Indirect Effects of the Synthetic-Auxin Herbicide Dicamba on Two Lepidopteran Species. Environmental Entomology 42 (3): 586-594.
Helms AM, De Moraes CM, Tooker JF, Mescher MC. 2013. Exposure of Solidago altissima plants to volatile emissions of an insect antagonist (Eurosta solidaginis) deters subsequent herbivory. Proceedings of National Academy of Science USA 110: 199-204. DOI: 10.1073/pnas.1218606110
Shoffner AV, Tooker JF. 2013. The potential of genotypically diverse cultivar mixtures to moderate aphid populations in wheat (Triticum aestivum L.). Arthropod-Plant Interactions 7: 33-43. (Shoffner was an undergraduate Honors student in the lab.)
Tooker JF, Frank SD. 2012. Genotypically diverse cultivar mixtures for insect pest management and increased crop yields. Journal of Applied Ecology 49:974-985. doi: 10.1111/j.1365-2664.2012.02173.x.
Kim J, Tooker JF, Luthe DS, De Moraes CM, Felton GW 2012. Insect eggs can enhance wound response in plants: a study system of tomato Solanum lycopersicum L. and Helicoverpa zea Boddie. PLoS ONE 7(5): e37420. doi:10.1371/journal.pone.0037420
Tian, D., Tooker, J. F., Peiffer, M., Chung, S., and G. W. Felton. 2012. Role of trichomes in defense against herbivores: Comparison of herbivore response to woolly and hairless trichome mutants in tomato (Solanum lycopersicum). Planta 236: 1053-66.
Tian, D, M. Peiffer, E. Shoemaker, J. Tooker, E. Haubruge, E. Francis, D. S. Luthe, and G. W. Felton. 2012. Salivary glucose oxidase from caterpillars mediates the induction of rapid and delayed-induced defenses in the tomato plant PLoS ONE 7(4): e36168. doi:10.1371/journal.pone.0036168.
Frost, C. J., Smyers E. C., Dean J. M., Mescher M. C, Carlson, J. E., De Moraes C. M., and J. F. Tooker. 2012. A petiole-galling insect herbivore decelerates leaf lamina litter decomposition rates. Functional Ecology 26: 628–636. DOI: 10.1111/j.1365-2435.2012.01986.x
Cui, L.L., F. Francis, Y. Liu, S. Heuskin, G. Lognay, J. Dong, J. Chen, C. Bragard, J. F. Tooker, and Y. Liu. 2012. E-β-Farnesene syngergizes the influence of an insecticide to improve control of cabbage aphids in China. Crop Protection 35: 91–96.
Douglas, M. R. and J. F. Tooker. 2012. Slug (Mollusca: Agriolimacidae, Arionidae) ecology and management in no-till field crops, with an emphasis on the Mid-Atlantic region. Journal of Integrated Pest Management 3: C1-C9.
Graham, E E., J. F. Tooker, and L. M. Hanks. 2012. Floral host plants of adult beetles of central Illinois. Annals of the Entomological Society of America 105: 287-297.
Wang, G., L. L. Cui, J. Dong, F. Francis, Y. Liu, and J. F. Tooker. 2011. Combining intercropping with semiochemical releases: optimisation of alternative control of Sitobion avenae in wheat crops in China. Entomologia Experimentalis et Applicata 140: 189-195.
Kluger, E. C., S. H. Berlocher, L. M. Hanks, and J. F. Tooker. 2011. Consequences of habitat fragmentation for the prairie-endemic weevil Haplorhynchites aeneus. Environmental Entomology 40: 1388-1396.
Tooker, J. F. and C. M. De Moraes. 2011. Feeding by Hessian fly (Mayetiola destructor [Say]) larvae increases levels of fatty acids and indole-3-acetic acid, but not hormones involved in plant-defense signaling. Journal of Plant Growth Regulation 30: 158-165.
Tooker, J. F. and C. M. De Moraes. 2011. Feeding by a gall-inducing caterpillar species increases levels of indole-3-acetic and decreases abscisic acid in Solidago altissima stems. Arthropod-Plant Interactions 5: 115-124.
Onstad, D. W., P. D. Mitchell, T. M. Hurley, J. G. Lundgren, R. P. Porter, C. H. Krupke, J. L. Spencer, C. D. DiFonzo, T. S. Baute, R. L. Hellmich, L. Buschman, W. D. Hutchison, J. F. Tooker. 2011. Seeds of change: Corn seed mixtures for resistance management and IPM. Journal of Economic Entomology 104: 343-352.
Tooker, J. F., and Fleischer, S. J. 2010. First report of western bean cutworm (Striacosta albicosta) in Pennsylvania. Online. Crop Management doi:10.1094/CM-2010-0616-01-RS.
Tooker, J. F, Peiffer M., D. S. Luthe, and G. W. Felton. 2010. Trichomes as sensors: detecting activity on the leaf surface. Plant Signaling & Behavior 5:73-75.
Peiffer M., J. F. Tooker, D. S. Luthe, and G. W. Felton. 2010. Plants on early alert: glandular trichomes as sensors for insect herbivores. New Phytologist 184:644-656.
Tooker, J. F. and C. M. De Moraes. 2009. A gall-inducing caterpillar species increases essential fatty acid content of its host plant without concomitant increases in phytohormone levels. Molecular Plant-Microbe Interactions 22(5): 551-559.
Tooker, J. F. and C. M. De Moraes. 2008. Gall insects and indirect plant defenses: a case of active manipulation? Plant Signaling & Behavior 3:79-80.
Tooker, J. F., J. R. Rohr, W. G. Abrahamson, and C. M. De Moraes. 2008. Gall insects can evade and alter indirect plant defenses. New Phytologist 178: 657671.
Tooker, J. F. and C. M. De Moraes. 2007. Feeding by Hessian fly [Mayetiola destructor (Say)] larvae does not induce plant indirect defences. Ecological Entomology 32:153-161.
Tooker, J. F. and C. M. De Moraes. 2007. Jasmonate, salicylate, and benzoate in insect eggs. Journal of Chemical Ecology 33:331-343.
Tooker, J.F., and C.M. De Moraes. 2006. Jasmonate in lepidopteran larvae. Journal of Chemical Ecology 32: 2321-2326.
Tooker, J.F., and L.M. Hanks.2006. Tritrophic interactions influence reproduction of prairie perennials (Asteraceae: Silphium). Environmental Entomology 35: 537-545.
Tooker, J.F., M. Hauser, and L.M. Hanks. 2006. Floral host plants of syrphidae and tachinidae (Diptera) of central Illinois. Annals of the Entomological Society of America 99: 96-112.
Tooker, J.F. and C.M. De Moraes. 2005. Jasmonate in lepidopteran eggs and neonates. Journal of Chemical Ecology 31: 2753-2759.
Ellis, J.A., A.D. Walter, J.F. Tooker, M.D. Ginzel, P.F. Reagel, E.S. Lacey, A.B. Bennett, E.M. Grossman, and L.M. Hanks. 2005. Conservation biological control in urban landscapes: Manipulating parasitoids of bagworm (Lepidoptera: Psychidae) with flowering forbs. Biological Control 34: 99-107.
Tooker, J.F., A. L.Crumrin, and L.M. Hanks. 2005. Plant volatiles are behavioral cues for adult females of the gall wasp Antistrophus rufus. Chemoecology 15: 85-88.
Tooker, J. F., and L. M. Hanks. 2004. Endophytic insect communities of two prairie perennials (Asteraceae: Silphium spp.). Biodiversity and Conservation 13: 2551-2566.
Tooker, J. F., and L. M. Hanks. 2004. Impact of prescribed burning on endophytic insect communities of prairie perennials (Asteraceae: Silphium spp.). Biodiversity and Conservation 13: 1875-1888.
Tooker, J. F., A. R. Deans, and L. M. Hanks. 2004. Description of the Antistrophus rufus (Hymenoptera: Cynipidae) species complex, including two new species. Journal of Hymenoptera Research 13: 125-133.
Tooker, J. F., and L. M. Hanks. 2004. Trophic position of the endophytic beetle Mordellistena aethiops Smith (Coleoptera: Mordellidae). Environmental Entomology 33: 291-296.
Tooker, J. F., and L. M. Hanks. 2004. Stereochemistry of host plant monoterpenes as mate location cues for the gall wasp Antistrophus rufus. Journal of Chemical Ecology 30: 473-477."
Favret, C., J. F. Tooker, and L. M. Hanks. 2004 Iowana frisoni Hottes (Hemiptera: Aphididae) redescribed, with notes on its biology. Proceedings of the Entomological Society of Washington 106: 26-34.
Tooker, J. F., W. A. Koenig, and L. M. Hanks. 2002. Altered host plant volatiles are proxies for sex pheromones in the gall wasp Antistrophus rufus. Proceedings of National Academy of Science USA 99: 15486-15491.
Tooker, J. F., P. F. Reagel, and L. M. Hanks. 2002. Nectar sources of day-flying Lepidoptera of central Illinois. Annals of the Entomological Society of America 95: 84-96.
Tooker, J. F., and L. M. Hanks. 2000. Influence of plant community structure on natural enemies of pine needle scale (Homoptera: Diaspididae) in urban landscapes. Environmental Entomology 29: 1305-1311.
Tooker, J. F., and L. M. Hanks. 2000. Flowering plant hosts of adult hymenopteran parasitoids of central Illinois. Annals of the Entomological Society of America 93: 580-588.
Publications
The effect of zinc fertilizer on maize growth, leaf mineral nutrition, and caterpillar herbivory
Arthropod-Plant Interactions, Rowen, Elizabeth K., Tooker, John F., 2022
Adverse effects of inbreeding on the transgenerational expression of herbivoreinduced defense traits in Solanum carolinense
PLoS One, Nihranz, Chad T., Helms, Anjel M., Tooker, John F., Mescher, Mark C., De Moraes, Consuelo M., Stephenson, Andrew G., 2022
Planted-green cover crops in maize/soybean rotations confer stronger bottom-up than top-down control of slugs
Agro-Ecosystems, Le Gall, Marion, Boucher, Matthew, Tooker, John F., 2022
Oak Galls Exhibit Ant Dispersal Convergent with Myrmecochorous Seeds
American Naturalist, Warren, Robert J., Guiguet, Antoine, Mokadam, Chloe, Tooker, John F., Deans, Andrew R., 2022
Early-season plant cover supports more effective pest control than insecticide applications
Ecological Applications, Rowen, Elizabeth K., Pearsons, Kirsten A., Smith, Richard G., Wickings, Kyle, Tooker, John F., 2022
Insecticide-contaminated honeydew: risks for beneficial insects
Biological Reviews, Calvo-Agudo, Miguel, Tooker, John F., Dicke, Marcel, Tena, Alejandro, 2022
More phylogenetically diverse polycultures inconsistently suppress insect herbivore populations
Oecologia, Coco, Angela M., Yip, Eric C., Kaplan, Ian, Tooker, John F., 2022
Linking water quality stressors and macroinvertebrate diversity in central Pennsylvania using passive samplers, Ferguson, Francesca M., Elkin, Kyle R., Stout, Robert, Veith, Tamie L., Tooker, John F., Preisendanz, Heather E., 2022
Preventative pest management in field crops influences the biological control potential of epigeal arthropods and soil-borne entomopathogenic fungi
Field Crops Research, Johnston-Fennell, Lindsay, Tooker, John, Nault, Brian A., Wickings, Kyle, 2021
Life History, Biology, and Distribution of Pterostichus melanarius (Coleoptera: Carabidae) in North America
Environmental Entomology, Busch, Anna K., Wham, Briana E., Tooker, John F., 2021
Wheat intraspecific diversity suppressed diseases with subdued yield, economic return and arthropod predation services
Agro-Ecosystems, Baniszewski, Julie, Burton, Amanda, Kemanian, Armen R., Roth, Greg, Tooker, John, 2021
Newer characters, same story: neonicotinoid insecticides disrupt food webs through direct and indirect effects
Current Opinion in Insect Science, Tooker, John F., Pearsons, Kirsten A., 2021
Small-Grain Cover Crops Have Limited Effect on Neonicotinoid Contamination from Seed Coatings
Environmental Science & Technology, Pearsons, Kirsten A., Rowen, Elizabeth K., Elkin, Kyle R., Wickings, Kyle, Smith, Richard G., Tooker, John F., 2021
Giant polyploid epidermal cells and male pheromone production in the tephritid fruit fly Eurosta solidaginis (Diptera: Tephritidae)
Journal of Insect Physiology, Yip, Eric C., Mikó, István, Ulmer, Jonah M., Cherim, Nancy A., Townley, Mark A., Poltak, Steffen, Helms, Anjel M., De Moraes, Consuelo M., Mescher, Mark C., Tooker, John F., 2021
Wild bees as winners and losers: Relative impacts of landscape composition, quality, and climate
Global Change Biology, Kammerer, Melanie, Goslee, Sarah C., Douglas, Margaret R., Tooker, John F., Grozinger, Christina M., 2021
Are polycultures for silage pragmatic medleys or gallimaufries?
Journal of Production Agriculture, Burton, Amanda B., Baniszewski, Julie, Roth, Greg W., Tooker, John F., Kemanian, Armen R., 2021
Ground Predator Activity-Density and Predation Rates Are Weakly Supported by Dry-Stack Cow Manure and Wheat Cover Crops in No-Till Maize
Environmental Entomology, Rowen, Elizabeth K., Tooker, John F., 2021
Are bacterial symbionts associated with gall induction in insects?
Arthropod-Plant Interactions, Hammer, Tobin J., De Clerck-Floate, Rosemarie, Tooker, John F., Price, Peter W., Miller, Donald G., Connor, Edward F., 2021
Preventive insecticide use affects arthropod decomposers and decomposition in field crops
Applied Soil Ecology, Pearsons, Kirsten A., Tooker, John F., 2021
Sensory co-evolution: The sex attractant of a gall-making fly primes plant defences, but female flies recognize resulting changes in host-plant quality
Journal of Ecology, Yip, Eric C., De Moraes, Consuelo M., Tooker, John F., Mescher, Mark C., 2021
Assessing surface and subsurface transport of neonicotinoid insecticides from no-till crop fields
Journal of Environmental Quality, Frame, Sarah T., Pearsons, Kirsten A., Elkin, Kyle R., Saporito, Louis S., Preisendanz, Heather E., Karsten, Heather D., Tooker, John F., 2021
Toxicity of clothianidin to common Eastern North American fireflies
PeerJ, Pearsons, Kirsten Ann, Lower, Sarah E., Tooker, John F., 2021
Beyond the Headlines: The Influence of Insurance Pest Management on an Unseen, Silent Entomological Majority
Frontiers in Sustainable Food Systems, Krupke, Christian H., Tooker, John F., 2020
A long-term dataset on wild bee abundance in Mid-Atlantic United States
Scientific data, Kammerer, Melanie, Tooker, John F., Grozinger, Christina M., 2020
Parasitoids, nematodes, and protists in populations of striped cucumber beetle (Coleoptera: Chrysomelidae)
Environmental Entomology, Coco, Angela M., Lewis, Margaret T., Fleischer, Shelby J., Tooker, John F., 2020
The Evolution of Endophagy in Herbivorous Insects
Frontiers in Plant Science, Tooker, John F., Giron, David, 2020
The Influence of Marking Methods on Mobility, Survivorship, and Field Recovery of Halyomorpha halys (Hemiptera: Pentatomidae) Adults and Nymphs
Environmental Entomology, Kirkpatrick, Danielle M., Rice, Kevin B., Ibrahim, Aya, Fleischer, Shelby J., Tooker, John F., Tabb, Amy, Medeiros, Henry, Morrison, William R., Leskey, Tracy C., 2020
Neonicotinoids pose undocumented threats to food webs
Proceedings of the National Academy of Sciences of the United States of America, Frank, S. D., Tooker, J. F., 2020
Weather and regional crop composition variation drive spatial synchrony of lepidopteran agricultural pests
Ecological Entomology, Walter, Jonathan A., Sheppard, Lawrence W., Venugopal, P. Dilip, Reuman, Daniel C., Dively, Galen, Tooker, John F., Johnson, Derek M., 2020
Is tillage beneficial or detrimental for insect and slug management? A meta-analysis
Agro-Ecosystems, Rowen, Elizabeth K., Regan, Karly H., Barbercheck, Mary E., Tooker, John F., 2020
Soybean aphid biotype 1 genome: Insights into the invasive biology and adaptive evolution of a major agricultural pest
Insect Biochemistry and Molecular Biology, Giordano, Rosanna, Donthu, Ravi Kiran, Zimin, Aleksey V., Julca Chavez, Irene Consuelo, Gabaldon, Toni, van Munster, Manuella, Hon, Lawrence, Hall, Richard, Badger, Jonathan H., Nguyen, Minh, Flores, Alejandra, Potter, Bruce, Giray, Tugrul, Soto-Adames, Felipe N., Weber, Everett, Marcelino, Jose A.P., Fields, Christopher J., Voegtlin, David J., Hill, Curt B., Hartman, Glen L., Akraiko, Tatsiana, Aschwanden, Andrew, Avalos, Arian, Band, Mark, Bonning, Bryony, Bretaudeau, Anthony, Chiesa, Olga, Chirumamilla, Anitha, Coates, Brad S., Cocuzza, Giuseppe, Cullen, Eileen, Desborough, Peter, Diers, Brian, DiFonzo, Christina, Heimpel, George E., Herman, Theresa, Huanga, Yongping, Knodel, Janet, Ko, Chiun Cheng, Labrie, Genevieve, Lagos-Kutz, Doris, Lee, Joon Ho, Lee, Seunghwan, Legeai, Fabrice, Mandrioli, Mauro, Manicardi, Gian Carlo, Mazzoni, Emanuele, Melchiori, Giulia, Micijevic, Ana, Tooker, John, 2020
Cultivar mixtures of soybeans have inconsistent effects on herbivore and natural-enemy populations
Agro-Ecosystems, Grettenberger, Ian M., Tooker, John F., 2020
A high-diversity/IPM cropping system fosters beneficial arthropod populations, limits invertebrate pests, and produces competitive maize yields
Agro-Ecosystems, Busch, Anna K., Douglas, Margaret R., Malcolm, Glenna M., Karsten, Heather D., Tooker, John F., 2020
Potential Impacts of Translocation of Neonicotinoid Insecticides to Cotton (Gossypium hirsutum (Malvales: Malvaceae)) Extrafloral Nectar on Parasitoids
Environmental Entomology, Jones, Asher G., Hoover, Kelli, Pearsons, Kirsten, Tooker, John F., Felton, Gary W., 2020
Fertilizing Corn with Manure Decreases Caterpillar Performance but Increases Slug Damage
Environmental Entomology, Rowen, Elizabeth, Tooker, John F., 2020
Pollen protein: Lipid macronutrient ratios may guide broad patterns of bee species floral preferences
Insects, Vaudo, Anthony D., Tooker, John F., Patch, Harland M., Biddinger, David J., Coccia, Michael, Crone, Makaylee K., Fiely, Mark, Francis, Jacob S., Hines, Heather M., Hodges, Mackenzie, Jackson, Stephanie W., Michez, Denis, Mu, Junpeng, Russo, Laura, Safari, Maliheh, Treanore, Erin D., Vanderplanck, Maryse, Yip, Eric, Leonard, Anne S., Grozinger, Christina M., 2020
Cytokinins are abundant and widespread among insect species
Plants, Andreas, Peter, Kisiala, Anna, Neil Emery, R. J., De Clerck-Floate, Rosemarie, Tooker, John F., Price, Peter W., Miller, Donald G., Chen, Ming Shun, Connor, Edward F., 2020
Balancing disturbance and conservation in agroecosystems to improve biological control
Annual Review of Entomology, Tooker, John F., O'Neal, Matthew E., Rodriguez-Saona, Cesar, 2020
Phytohormones in Fall Armyworm Saliva Modulate Defense Responses in Plants
Journal of Chemical Ecology, Acevedo, Flor Edith, Smith, Philip, Peiffer, Michelle, Helms, Anjel, Tooker, John, Felton, Gary W., 2019
Managing fertility with animal waste to promote arthropod pest suppression
Biological Control, Rowen, Elizabeth, Tooker, John F., Blubaugh, Carmen K., 2019
Costs of plant defense priming: Exposure to volatile cues from a specialist herbivore increases short-term growth but reduces rhizome production in tall goldenrod (Solidago altissima)
BMC Plant Biology, Yip, Eric C., Tooker, John F., Mescher, Mark C., De Moraes, Consuelo M., 2019
Chemical cues linked to risk: Cues from below-ground natural enemies enhance plant defences and influence herbivore behaviour and performance
Functional Ecology, Helms, Anjel M., Ray, Swayamjit, Matulis, Nina L., Kuzemchak, Margaret C., Grisales, William, Tooker, John F., Ali, Jared G., 2019
Trade-offs between defenses against herbivores in goldenrod (Solidago altissima)
Arthropod-Plant Interactions, Yip, Eric C., Sowers, Rosalie P., Helms, Anjel M., Mescher, Mark C., De Moraes, Consuelo M., Tooker, John F., 2019
A network approach reveals parasitoid wasps to be generalized nectar foragers
Arthropod-Plant Interactions, Zemenick, Ash T., Kula, Robert R., Russo, Laura, Tooker, John, 2019
Planting green effects on corn and soybean production
Journal of Production Agriculture, Reed, Heidi K., Karsten, Heather D., Curran, William S., Tooker, John F., Duiker, Sjoerd W., 2019
Evaluation of biorational insecticides and DNA barcoding as tools to improve insect pest management in lablab bean (Lablab purpureus) in Bangladesh
Journal of Asia-Pacific Entomology, Douglas, Margaret R., Chang, Jan, Begum, Kohinoor, Subramanian, Sevgan, Tooker, John F., Alam, Syed Nurul, Ramasamy, Srinivasan, 2018
Potato leafhopper is abundant in alfalfa
Field Crop News, Tooker, John, 2018
Zucchini yellow mosaic virus infection limits establishment and severity of powdery mildew in wild populations of cucurbita pepo
Frontiers in Plant Science, Harth, Jacquelyn E., Ferrari, Matthew J., Tooker, John F., Stephenson, Andrew G., 2018
Soybean sentinel plot report-19 June 2018
Field Crop News, Tooker, John, 2018
Insect pest active the first week of June
Field Crop News, Tooker, John, 2018
Consistent pollen nutritional intake drives bumble bee (Bombus impatiens) colony growth and reproduction across different habitats
Ecology and Evolution, Vaudo, Anthony D., Farrell, Liam M., Patch, Harland M., Grozinger, Christina M., Tooker, John F., 2018
Black cutworm moths arriving, and seedcorn maggots making themselves known
Field Crop News, Tooker, John, 2018
Alfalfa insect management
Field Crop News, Tooker, John, 2018
Black cutworm moths and slugs are becoming active
Field Crop News, Tooker, John, 2018
Life history and habitat explain variation among insect pest populations subject to global change
Ecosphere, Walter, Jonathan A., Ives, Anthony R., Tooker, John F., Johnson, Derek M., 2018
Pests to keep in mind: Cereal leaf beetle and timothy mite
Field Crop News, Tooker, John, 2018
Watch out for alfalfa weevil
Field Crop News, Tooker, John, 2018
Penn State's Black cutworm monitoring network
Field Crop News, Tooker, John, 2018
Managing Crop Pests with Cultivar Mixtures
Penn State Entomology Factsheet, Tooker, John, 2018
Quantitative evolutionary patterns in bipartite networks: Vicariance, phylogenetic tracking or diffuse co-evolution?
Methods in Ecology and Evolution, Russo, Laura, Miller, Adam D., Tooker, John, Bjornstad, Ottar N., Shea, Katriona, 2018
Chemical Ecology and Sociality in Aphids: Opportunities and Directions
Journal of Chemical Ecology, Abbot, Patrick, Tooker, John, Lawson, Sarah P., 2018
Erratum to: Zucchini yellow mosaic virus infection limits establishment and severity of powdery mildew in wild populations of cucurbita pepo (Frontiers in plant science, (2018), 9, 10.3389/fpls.2018.00792)
Frontiers in Plant Science, Harth, Jacquelyn E., Ferrari, Matthew J., Helms, Anjel M., Tooker, John F., Stephenson, Andrew G., 2018
A Maize Inbred Exhibits Resistance Against Western Corn Rootwoorm, Diabrotica virgifera virgifera
Journal of Chemical Ecology, Castano-Duque, Lina, Loades, Kenneth W., Tooker, John F., Brown, Kathleen M., Paul Williams, W., Luthe, Dawn S., 2017
Identification of an insect-produced olfactory cue that primes plant defenses
Nature Communications, Helms, Anjel M., De Moraes, Consuelo M., Tröger, Armin, Alborn, Hans T., Francke, Wittko, Tooker, John F., Mescher, Mark C., 2017
Kudzu bug
Field Crop News, Tooker, John, 2017
Western bean cutworm
Field Crop News, Tooker, John, 2017
Corn leaf aphid
Field Crop News, Tooker, John, 2017
Preparing for slugs for next year
Field Crop News, Tooker, John, 2017
Soybean sentinel program report
Field Crop News, Tooker, John, 2017
Watch out for potato leafhoppers populations
Field Crop News, Tooker, John, 2017
Silent Sparks: The Wondrous World of Fireflies Sara Lewis
American Entomologist, Tooker, John, 2017
Invertebrate pests are making their presence known
Field Crop News, Tooker, John, 2017
Developing ecologically based pest management programs for terrestrial molluscs in field and forage crops
Journal of Pest Science, Le Gall, Marion, Tooker, John F., 2017
Black cutworm
Field Crop News, Tooker, John, 2017
Insect pests to keep in mind: Black cutworm, cereal leaf beetle, and true armyworm
Field Crop News, Tooker, John, 2017
The usual suspects for this time of year: black cutworm and slugs
Field Crop News, Tooker, John, 2017
Insect pests to keep in mind: armyworm, black cutworm, alfalfa weevil, and pea aphids
Field Crop News, Tooker, John, 2017
The volatile emission of a specialist herbivore alters patterns of plant defence, growth and flower production in a field population of goldenrod
Functional Ecology, Yip, Eric C., De Moraes, Consuelo M., Mescher, Mark C., Tooker, John F., 2017
Aphids In Timothy Fields
Field Crop News, Tooker, John, 2017
Black cutworm monitoring network
Field Crop News, Tooker, John, 2017
Variety mixtures of wheat influence aphid populations and attract an aphid predator
Arthropod-Plant Interactions, Grettenberger, Ian M., Tooker, John F., 2017
Warmer than Average Winter and Pest Populations
Field Crop News, Tooker, John, 2017
Landscape Factors Influencing Stink Bug Injury in Mid-Atlantic Tomato Fields
Journal of Economic Entomology, Rice, Kevin B., Troyer, Rachael R., Watrous, Kristal M., Tooker, John F., Fleischer, Shelby J., 2017
Correction: Bumble bees regulate their intake of essential protein and lipid pollen macronutrients
The Journal of Experimental Biology, Vaudo, AD, Stabler, D, Patch, HM, Tooker, John, Grozinger, CM, Wright, GA, 2017
The cyanide gland of the greenhouse millipede, Oxidus gracilis (Polydesmida: Paradoxosomatidae)
Research Ideas and Outcomes, Pearsons, Kirsten, Mik\'o, Istv\'an, None, Tooker, John, 2017
Insect Pest Management Sections
Penn State Agronomy Guide, Tooker, John, 2017
Neonicotinoid Seed Treatments: Limitations and Compatibility with Integrated Pest Management
Agricultural and Environmental Letters, Tooker, John F., Douglas, Margaret R., Krupke, Christian H., 2017
In-field habitat management to optimize pest control of novel soil communities in agroecosystems
Insects, Pearsons, Kirsten A., Tooker, John F., 2017
Bumble bees regulate their intake of essential protein and lipid pollen macronutrients
Journal of Experimental Biology, Vaudo, A. D., Stabler, D., Patch, H. M., Tooker, J. F., Grozinger, C. M., Wright, G. A., 2016
Landscape factors influencing stink bug injury in Mid-Atlantic tomato fields.
Journal of Economic Entomology, Rice, K, Troyer, R, Watrous, K, Tooker, John, Fleischer, S, 2016
Open Letter Regarding Efficacy of Cry1F Trait on Western Bean Cutworm
Field Crop News, Tooker, John, 2016
Inter-varietal interactions among plants in genotypically diverse mixtures tend to decrease herbivore performance
Oecologia, Grettenberger, Ian M., Tooker, John F., 2016
Modeling the decision process for barley yellow dwarf management
Computers and Electronics in Agriculture, Walls, Joseph T., Caciagli, Piero, Tooker, John F., Russo, Joseph M., Rajotte, Edwin G., Rosa, Cristina, 2016
Top-down network analysis characterizes hidden termite–termite interactions
Ecology and Evolution, Campbell, Colin, Russo, Laura, Marins, Alessandra, DeSouza, Og, Schönrogge, Karsten, Mortensen, David, Tooker, John, Albert, Réka, Shea, Katriona, 2016
Worms in your ears? (earworm and western bean cutworm)
Field Crop News, Tooker, John, 2016
Insect Update - two-spotted spider mites, aphids, potato leafhoppers, western bean cutworm
Field Crop News, Tooker, John, 2016
Macronutrient ratios in pollen shape bumble bee (Bombus impatiens) foraging strategies and floral preferences
Proceedings of the National Academy of Sciences of the United States of America, Vaudo, Anthony D., Patch, Harland M., Mortensen, David A., Tooker, John F., Grozinger, Christina M., 2016
Two more pests to consider: armyworm and potato leafhoppers
Field Crop News, Tooker, John, 2016
Soybean sentinel plot program 2016
Field Crop News, Tooker, John, 2016
Corrigendum to "Bee nutrition and floral resource restoration" [Curr. Opin. Insect Sci. 10 (2015) 133-141].
Current opinion in insect science, Vaudo, A, Tooker, John, Grozinger, Christina, Patch, H, 2016
Erratum: Bee nutrition and floral resource restoration (Current Opinion in Insect Science (2015) 10 (133-141) DOI: 10.1016/j.cois.2015.05.008)
Current Opinion in Insect Science, Vaudo, Anthony D., Tooker, John F., Grozinger, Christina M., Patch, Harland M., 2016
Scouting time for black cutworm damage!
Field Crop News, Tooker, John, 2016
Watch for bean leaf beetle in your earliest emerging soybean fields
Field Crop News, Tooker, John, 2016
Scouting for black cutworm damage should begin soon in southern parts of Pennsylvania
Field Crop News, Tooker, John, 2016
slugs, alfalfa weevil, Cereal leaf beetle 24 May 2016
Field Crop News, Tooker, John, 2016
Black cutworm caterpillar are active, but cutting damage has not yet begun
Field Crop News, Tooker, John, 2016
Black cutworm moths continue to arrive, but the caterpillars do not appear to be developing quickly
Field Crop News, Tooker, John, 2016
Keep an eye out for cereal leaf beetle
Field Crop News, Tooker, John, 2016
Black cutworm moths are arriving; caterpillars will be active in the coming weeks
Field Crop News, Tooker, John, 2016
Good conditions for slugs
Field Crop News, Tooker, John, 2016
black cutworm, alfalfa weevil, Cereal leaf beetle
Field Crop News, Tooker, John, 2016
Alfalfa weevil starting to hatch
Field Crop News, Tooker, John, 2016
Black cutworm monitoring network
Field Crop News, Tooker, John, 2016
Meta-analysis reveals that seed-applied neonicotinoids and pyrethroids have similar negative effects on abundance of arthropod natural enemies
PeerJ, Douglas, Margaret R., Tooker, John F., 2016
Effects of the herbicide dicamba on nontarget plants and pollinator visitation
Environmental Toxicology and Chemistry, Bohnenblust, Eric W., Vaudo, Anthony D., Egan, J. Franklin, Mortensen, David A., Tooker, John F., 2016
Sustainability of Genetically Engineered Insect-Resistant Crops: A View from the Fringe
Stewardship for the Sustainability of Genetically Engineered Crops: The Way Forward in Pest Management, Coexistence, and Trade., Tooker, John, 2016
Halyomorpha halys (brown marmorated stink bug)
CABI Crop Protection Compendium and Invasive Species Compendium, Leskey, TC, Hamilton, GC, Biddinger, DJ, Buffington, ML, Dieckhoff, C, Dively, GP, Fraser, H, Hedstrom, C, Herbert, DA, Hoelmer, KA, Tooker, John, 2016
The Effectiveness of Neonicotinoid Seed Treatments in Soybean, December 2015 (collaborative effort with entomologists from twelve land-grant universities)
Penn State Entomology Factsheet, Krupke, Christian, Tooker, John, 2015
Moving beyond resistance management toward an expanded role for seed mixtures in agriculture
Agro-Ecosystems, Grettenberger, Ian M., Tooker, John F., 2015
The value of bats to crop production
Field Crop News, Tooker, John, 2015
stink bug survey looking for participants
Field Crop News, Tooker, John, 2015
corn leaf aphid
Field Crop News, Tooker, John, 2015
Hessian fly and cover crops
Field Crop News, Tooker, John, 2015
Western bean cutworm
Field Crop News, Tooker, John, 2015
Soybean sentinel plot program 2015
Field Crop News, Tooker, John, 2015
Assessing soybean fields for insect defoliation
Field Crop News, Tooker, John, 2015
Current Insect Issue: Western Corn Rootworm, True Armyworm, Tank Mixing
Field Crop News, Tooker, John, 2015
Insect pests to consider: soybean aphids, potato leaf hopper, armyworm, corn rootworm
Field Crop News, Tooker, John, 2015
Bee nutrition and floral resource restoration
Current Opinion in Insect Science, Vaudo, Anthony D., Tooker, John F., Grozinger, Christina M., Patch, Harland M., 2015
Soybean sentinel plot program
Field Crop News, Tooker, John, 2015
Intellectual Property, Scientific Independence, and the Efficacy and Environmental Impacts of Genetically Engineered Crops
Rural Sociology, Glenna, Leland L., Tooker, John, Welsh, J. Rick, Ervin, David, 2015
black cutworm, true armyworm
Field Crop News, Tooker, John, 2015
Black cutworm
Field Crop News, Tooker, John, 2015
black cutworm, alfalfa weevil, cereal leaf beetle
Field Crop News, Tooker, John, 2015
Large-scale deployment of seed treatments has driven rapid increase in use of neonicotinoid insecticides and preemptive pest management in U.S. Field crops
Environmental Science & Technology, Douglas, Margaret R., Tooker, John F., 2015
Alfalfa weevil starting to hatch
Field Crop News, Tooker, John, 2015
Black cutworm monitoring network
Field Crop News, Tooker, John, 2015
Timothy mite
Field Crop News, Tooker, John, 2015
Neonicotinoid insecticide travels through a soil food chain, disrupting biological control of non-target pests and decreasing soya bean yield
Journal of Applied Ecology, Douglas, Margaret R., Rohr, Jason R., Tooker, John F., 2015
Maize Plants Recognize Herbivore-Associated Cues from Caterpillar Frass
Journal of Chemical Ecology, Ray, Swayamjit, Gaffor, Iffa, Acevedo, Flo, Helms, Anjel, Chuang, Wen Po, Tooker, John, Felton, Gary W., Luthe, Dawn S., 2015
Sustainability of genetically engineered insect-resistant Crops: A view from the fringe, Tooker, John, 2015
Neotropical Gall Insects, Tooker, John, 2015
Insect Pest Management Sections
Penn State Agronomy Guide, Tooker, John, 2015
Handheld lasers allow efficient detection of fluorescent marked organisms in the field
PLoS One, Rice, Kevin, Fleischer, Shelby, de Moraes, C, Mescher, M, Tooker, John F., Gish, Moshe, 2015
Questionable benefits of neonicotinoid seed treatments on soybean
Field Crop News, Tooker, John, 2014
Soybean Sentinel Plot Update
Field Crop News, Tooker, John, 2014
When planting wheat consider Hessian fly and aphids
Field Crop News, Tooker, John, 2014
Soybean Sentinel Plot Update - 9 Sept 2014
Field Crop News, Tooker, John, 2014
An Update on Pennsylvania Populations of Corn Rootworm Suspected of Resistance to Bt
Field Crop News, Tooker, John, 2014
Soybean Aphids and Grasshoppers in Soybean
Field Crop News, Tooker, John, 2014
Biology, ecology, and management of brown marmorated stink bug (Hemiptera: Pentatomidae)
Journal of Integrated Pest Management, Rice, Kevin B., Bergh, Chris J., Bergmann, Erik J., Biddinger, Dave J., Dieckhoff, Christine, Dively, Galen, Fraser, Hannah, Gariepy, Tara, Hamilton, George, Haye, Tim, Herbert, Ames, Hoelmer, Kim, Hooks, Cerruti R., Jones, Ashley, Krawczyk, Greg, Kuhar, Thomas, Martinson, Holly, Mitchell, William, Nielsen, Anne L., Pfeiffer, Doug G., Raupp, Michael J., Rodriguez-Saona, Cesar, Shearer, Peter, Shrewsbury, Paula, Venugopal, P. Dilip, Whalen, Joanne, Wiman, Nik G., Leskey, Tracy C., Tooker, John F., 2014
Rootworm resistance to Bt in PA
Field Crop News, Tooker, John, 2014
Soybean aphid and western bean cutworm update
Field Crop News, Tooker, John, 2014
One gene versus two: A regional study on the efficacy of single gene versus pyramided resistance for soybean aphid management
Journal of Economic Entomology, McCarville, M. T., O'Neal, M. E., Potter, B. D., Tilmon, K. J., Cullen, E. M., McCornack, B. P., Tooker, J. F., Prischmann-Voldseth, D. A., 2014
Soybean aphids and western bean cutworm moths found in PA
Field Crop News, Tooker, John, 2014
Soybean sentinel plot update - 29 July 2014
Field Crop News, Tooker, John, 2014
Phytohormone Dynamics Associated with Gall Insects, and their Potential Role in the Evolution of the Gall-Inducing Habit
Journal of Chemical Ecology, Tooker, John F., Helms, Anjel M., 2014
Penn State's Western Bean Cutworm Trapping Network
Field Crop News, Tooker, John, 2014
Scout for armyworms and potato leafhopper
Field Crop News, Tooker, John, 2014
The volatile emission of Eurosta solidaginis primes herbivore-induced volatile production in Solidago altissima and does not directly deter insect feeding
BMC Plant Biology, Helms, Anjel M., De Moraes, Consuelo M., Mescher, Mark C., Tooker, John F., 2014
Soybean sentinel plot update - 17 June 2014
Field Crop News, Tooker, John, 2014
Other pests that are active: cereal leaf beetle and potato leaf hopper
Field Crop News, Tooker, John, 2014
Start scouting for black cutworm
Field Crop News, Tooker, John, 2014
An update on Black cutworm
Field Crop News, Tooker, John, 2014
Some populations of alfalfa weevil in nearby states may be resistant to pyrethroids
Field Crop News, Tooker, John, 2014
The usual suspects for this time of year
Field Crop News, Tooker, John, 2014
Cereal leaf beetle, black cutworm, alfalfa weevil - 29 April 2014
Field Crop News, Tooker, John, 2014
Combining Bt and soil insecticides does not appear beneficial for managing western corn rootworm
Field Crop News, Tooker, John, 2014
Black cutworm monitoring network-21 April 2014
Field Crop News, Tooker, John, 2014
overwintering mortality of bean leaf beetle
Field Crop News, Tooker, John, 2014
Using the PA-PIPE to track alfalfa weevil development
Field Crop News, Tooker, John, 2014
Insect Pest Management Sections
Organic Field Crop Production Guide Published, Barbercheck, M, Tooker, John, 2014
Herbicide drift can affect plant and arthropod communities
Agro-Ecosystems, Egan, J. Franklin, Bohnenblust, Eric, Goslee, Sarah, Mortensen, David, Tooker, John, 2014
A framework for evaluating ecosystem services provided by cover crops in agroecosystems
Agricultural Systems, Schipanski, Meagan E., Barbercheck, Mary, Douglas, Margaret R., Finney, Denise M., Haider, Kristin, Kaye, Jason P., Kemanian, Armen R., Mortensen, David A., Ryan, Matthew R., Tooker, John, White, Charlie, 2014
Cold winters and insect pests
Field Crop News, Tooker, John, 2014
Free corn rootworm management webinar
Field Crop News, Tooker, John, 2014
Shared genes related to aggression, rather than chemical communication, are associated with reproductive dominance in paper wasps (Polistes metricus)
BMC Genomics, Toth, Amy L., Tooker, John F., Radhakrishnan, Srihari, Minard, Robert, Henshaw, Michael T., Grozinger, Christina M., 2014
Bumble bees exhibit daily behavioral patterns in pollen foraging
Arthropod-Plant Interactions, Vaudo, Anthony D., Patch, Harland M., Mortensen, David A., Grozinger, Christina M., Tooker, John F., 2014
Current European corn borer, Ostrinia nubilalis, injury levels in the northeastern United States and the value of Bt field corn
Pest Management Science, Bohnenblust, Eric, Breining, James, Shaffer, John, Fleischer, Shelby, Roth, G, Tooker, John F., 2014
Corn pith weevil, Geraeus penicillus (Coleoptera: Curculionidae), in transgenic, insect-resistant and conventional field corn hybrids
Journal of Applied Entomology, Bohnenblust, E., Breining, J., Roth, G., Tooker, J., 2013
CABI (Centre for Agricultural Bioscience International) Datasheet for Halyomorpha halys (Stål), (Hemiptera: Pentatomidae)
CABI Crop Protection Compendium and Invasive Species Compendium, Leskey, Tracy, Hamilton, George, Biddinger, D, Buffington, Matthew, Dieckhoff, Christine, Tooker, John, 2013
Herbivore exploits orally secreted bacteria to suppress plant defenses
Proceedings of the National Academy of Sciences of the United States of America, Chung, Seung Ho, Rosa, Cristina, Scully, Erin D., Peiffer, Michelle, Tooker, John F., Hoover, Kelli, Luthe, Dawn S., Felton, Gary W., 2013
Western corn rootworm resistance reported in NY
Field Crop News, Tooker, John, 2013
Cultivar Mixtures Can Increase Wheat Yield
Field Crop News, Tooker, John, 2013
Grain storage preparation will pay in the long run
Field Crop News, Tooker, John, 2013
Late season brown marmorated stink bugs populations in soybeans
Field Crop News, Tooker, John, 2013
Soybean Sentinel Plot Update - 10 Sept 2013
Field Crop News, Tooker, John, 2013
Soybean Sentinel Plot Update - 27 August 2013
Field Crop News, Tooker, John, 2013
Western Bean Cutworm Moths Are Flying
Field Crop News, Tooker, John, 2013
Soybean Sentinel Plot Update - 23 July 2013
Field Crop News, Tooker, John, 2013
Kudzu Bug
Field Crop News, Tooker, John, 2013
Soybean Sentinel Plot Update - 16 July 2013
Field Crop News, Tooker, John, 2013
Exploring the pest management and production benefits of cultivar mixtures
Field Crop News, Tooker, John, 2013
Pests to keep in mind: black cutworm, potato leafhoppers, and slugs
Field Crop News, Tooker, John, 2013
Soybean Sentinel Plot Program for 2013
Field Crop News, Tooker, John, 2013
Insects to keep in mind-black cutworm, cereal leaf beetle, armyworm
Field Crop News, Tooker, John, 2013
Direct and indirect effects of the synthetic-auxin herbicide dicamba on two lepidopteran species
Environmental Entomology, Bohnenblust, Eric, Egan, J. Franklin, Mortensen, David, Tooker, John Frazier, 2013
Corn earworm (Lepidoptera: Noctuidae) in northeastern field corn: Infestation levels and the value of transgenic hybrids
Journal of Economic Entomology, Bohnenblust, Eric, Breining, Jim, Fleischer, Shelby Jay, Roth, Gregory Wayne, Tooker, John Frazier, 2013
Stay vigilant for cereal leaf beetle, slugs, and black cutworm
Field Crop News, Tooker, John, 2013
Significant flights of black cutworm
Field Crop News, Tooker, John, 2013
Be thankful for a more normal spring, but be wary of slugs as planting progresses
Field Crop News, Tooker, John, 2013
Aphids and barley yellow dwarf virus
Field Crop News, Tooker, John, 2013
Looking for fields infested with Barley Yellow Dwarf Virus
Field Crop News, Tooker, John, 2013
Alfalfa Weevil Pest Prediction and Soil Temperatures found on PA-PIPE
Field Crop News, Tooker, John, 2013
Start Watching For Mites in Timothy
Field Crop News, Tooker, John, 2013
Brown marmorated stink bug, January 2013
Penn State Entomology Factsheet, Tooker, John, 2013
Exposure of Solidago altissima plants to volatile emissions of an insect antagonist (Eurosta solidaginis) deters subsequent herbivory
Proceedings of the National Academy of Sciences of the United States of America, Helms, Anjel M., De Moraes, Consuelo M., Tooker, John F., Mescher, Mark C., 2013
The potential of genotypically diverse cultivar mixtures to moderate aphid populations in wheat (Triticum aestivum L.)
Arthropod-Plant Interactions, Shoffner, Alexandra, Tooker, John, 2013
Insect Pest Management Sections
Penn State Agronomy Guide, Tooker, John, 2013