David John Biddinger, Ph.D.

David John Biddinger, Ph.D.

  • Tree Fruit Research Entomologist
  • Research Professor
Fruit Research & Extension Ctr.
290 University Drive

Biglerville, PA 17307-0330

Areas of Expertise

  • Integrated Pest and Pollinator Management for Tree Fruit, Taxonomy and Natural History of Bees & Biological Control, Orchard Community Ecology & Ecotoxicology, Conservation Biological Control, Invasive Species Insecticide and Native Biological Control, Pesticide Evaluations

Education

  • B.S., Michigan State University, 1984
  • M.S., Michigan State University, 1989
  • Ph.D., Penn State University, 1993

Areas of Specialization

Tree Fruit Integrated Pest & Pollinator Management + (Biodiversity/Ecotoxicology Partners), Conservation Biological Control, Taxonomy of Bees and other arthropods, Pesticide & Biological Control of Invasive Species, Orchard Community Ecology

Research Activities & Interests:

Based at a remote research station 2.5 hours away from campus, my research focuses on developing IPPM programs in tree fruits that utilize selective insecticides (i.e., IGR's, Bt's, pheromone disruption) to control lepidopteran pest species while promoting biological control of secondary pests. Bee and syrphid identification and natural history in orchards and surrounding landscape has been a major focus over the last 10 years with over 200,000 bee collected (approximately250 species) and data-based as baseline information over time to measure biodiversity losses due to climate change, pesticide use, or possibly conserved through IPPM practices such as changes in pesticide recommendations or the inclusion of floral resource plantings into the landscape around orchards.  In this I work closely with the Frost Entomological Museum on campus. I manage large populations of the introduced Japanese Orchard Bee (Osmia cornifrons) that we use as a surrogate for non-Apid bee in understanding pesticide effects. We are measuring field realistic doses of insecticides and fungicides in orchards using typical fruit grower equipment on the 80 acres of commercial fruit plantings at the station.  We use this information to modify application timing or pesticide selection to better protect the wild pollinators that provide most of the pollination of Pennsylvana's 22,000 acres of apple and 3,500 acres of peach.  In my lab, using these realistic doses we measure in the orchards, we are testing the lethal and sublethal effects of pesticides on this bee in comparison to the honey bee to better understand variable toxicity between the two species and the mechanisms involved.  With regular introduction of invasive species that affect orchards (e.g. brown marmorated stink bug, spotted wing drosophila, spotted lanternfly and others), I became increasingly involved with the search for native predators and parasitoids to host shift and help control these pests in addition to testing various insecticides for efficacy and integrating them into existing IPPM programs for multiple crops.

Recent & Relevant Publications

Phan, N. T., N. K. Joshi, E. G. Rajotte, M. M. Lopez-Uribe, F. Zhu, & D. Biddinger.  2020.  A new ingestion bioassay protocol for assessing pesticide toxicity to the adult Japanese orchard bee (Osmia cornifrons). Scientific Reports 10:9517 https://www.nature.com/articles/s41598-020-66118-2.pdf.

Reilly, J. R., D. R. Artz, D. Biddinger, K. Bobiwash, N. K. Boyle, C. Brittain, J. Brokaw, J. W. Campbell, J. Daniels, E. Elle, J. D. Ellis, S. J. Fleischer, J. Gibbs, R. L. Gillespie, K. B. Gundersen, L. Gut, G. Hoffman, N. Joshi, O. Lundin, K. Mason, C. M. McGrady, S. S. Peterson, T. L. Pitts-Singer, S. Rao, N. Rothwell, L.. Rowe, K. L. Ward, N. M. Williams, J. K. Wilson, R. Isaacs, & R. Winfree. 2020.  Crop production in the USA is frequently limited by lack of pollinators. Proc. R. Soc. B 287: 20200922.

Kilpatrick, S. K., J. Gibbs, M. M. Mikulas, S. Spichiger, N. Ostiguy, D. J. Biddinger, & M. Lopez-Uribe. 2020.  An updated checklist of bees (Hymenoptera, Apoidea, Anthophila) of Pennsylvania, United States of America. J. Hymenoptera Research 77:1-86. https://doi.org/10.3897/jhr.77.49622

Porras, M. F., T. Lopez-Londono, J. Rost, D. Biddinger, D. Calvin, & E. G. Rajotte.  2020.  A method for a long-term marking of spotted lanternfly (Hemiptera: Fulgoridae) using a stable isotope of nitrogen. Environmental Entomology, Vol. 20 (20), p: 1-5.

Heller, S., Joshi, N. K., Chen, J., Rajotte, E. G., Mullin, C., and Biddinger, D.J. 2020. Pollinator exposure to systemic insecticides and fungicides applied in the previous fall and pre-bloom period in apple orchards. Environmental Pollution, doi.org/10.1016/j.envpol.2020.114589.

Vaudo, A. D., J. F. Tooker, H. M. Patch, D. J. Biddinger, et al.  2020.  Pollen protein: lipid macronutrient ratios may guide broad patterns of bee species floral preferences.  Insects, 11, 132; doi:10.3390/insects11020132.

Vaudo, A. D., D. J. Biddinger, W. Sickel, A. Keller, and M. M. Lopez-Uribe. 2020.  Introduced bees (Osmia cornifrons) collect pollen from both co-evolved and novel host-plant species within their family-level phylogenetic preferences.  Royal Society Open Science 7: 200225.

Joshi, N. K., H. K. Ngugi, & D. J. Biddinger.  2020.  Bee vectoring: Development of the Japanese orchard bee as a targeted delivery system of biological control agents for fire blight management.  Pathogens, 9(1), 41; https://doi.org/10.3390/pathogens9010041  

Joshi, N.K., Leslie, T., Rajotte, E.G., Biddinger, D.J.  2020.  Environmental impacts of reduced-risk and conventional pesticide programs differ in commercial apple orchards, but similarly influence pollinator community. Chemosphere 240(2020)124926.

Heller, S., Joshi, N. K., Leslie, T., Rajotte, E., & D. Biddinger.  2019.  Diversified floral resource plantings support bee communities after apple bloom in commercial orchards. Nov. 2019 Nature Scientific Reports.  DOI:10.1038/s41598-019-52501-y

Leach, H., D. Biddinger, G. Krawczyk, E. Smyers, & J. M. Urban.  2019.  Evaluation of insecticides for control of the spotted lanternfly, Lycorma delicatula, (Hemiptera: Fulgoridae), a new pest of fruit in the northeastern U.S.  Crop Protection 124(2019) 104833

Joshi, N. K., T. Leslie, & D. Biddinger.  2019.  Parasitism of the invasive brown marmorated stink bug, Hyalomorpha halys (Hemiptera: Pentatomidae), by the native parasitoid, Trichopoda pennipes (Diptera: Tachinidae).  Biology 14(8(3)).

Park, M., Joshi, N., Rajotte, E., Biddinger, D., Losey, J., & Danforth, B. (2018). Apple grower pollination practices and perceptions of alternative pollinators in New York & Pennsylvania. Renewable Agriculture and Food Systems, 1-14. doi:10.1017/S1742170518000145.

Pak, D., Biddinger, D., Bjørnstad, O.  2018.  Large scale climate systems, the North Atlantic Oscillation and Arctic Oscillation, influence the spring phenology of Mid-Atlantic tortricid pests across 36 years. Ecological Entomology, DOI:10.1111/een.12712.

Biddinger, D., E. G. Rajotte, N. K. Joshi.  2018.  Chapter. 4 Integrating pollinator health into tree fruit IPM- A case study of Pennsylvania apple production (Chapter- 4), p. 69-83.  In: The pollination of cultivated plants: a compendium for practitioners. Vol. 1. (Editor- D. Roubik). Food and Agricultural Organization of the United Nations. 313 p. https://ainfo.cnptia.embrapa.br/digital/bitstream/item/180143/1/I9201EN-1.pdf

Biddinger, D.  2018.  Conserving predatory mites in apple orchards (or mighty mites conquer mite pests). Box 5.1, pg. 88-89.  In: Natural Enemies: An Introduction to Biological Control. 2nd edition. A. Hajek & J. Eilenberg. Cambridge University Press. 439 p.

Gibbs, J., Joshi N.K., Wilson J., Rothwell N., Powers K., Haas M., Gut L., Biddinger D., and Isaacs, R. 2017. Does passive sampling accurately reflect the bee (Apoidea: Anthophila) communities pollinating apple and sour cherry orchards? Environmental Entomology, doi: 10.1093/ee/nvx069

Abram, P. K., K. A. Hoelmer, A. Acebes-Doria, H. Andrews, E. H. Beers, J. C. Bergh, R. Bessin, D. J. Biddinger, et. al.  2017. Indigenous arthropod natural enemies of the invasive brown marmorated stink bug in North America and Europe. Journal of Pest Science. doi:10.1007/s10340-017-0891-7. pp 1-12.

Biddinger D., A. Surcică, and N. K. Joshi.  2017. A native predator utilizing the invasive brown marmorated stink bug, Halyomorpha halys (Hemiptera: Pentatomidae) as a food source. Biocontrol Science and Technology.  https://doi.org/10.1080/09583157.2017.1354247.  

Joshi, N. K., M. Otieno, E. G. Rajotte, S. J. Fleischer, and D. Biddinger.  2016.  Proximity to woodland and landscape structure drive pollinator visitation in apple orchard ecosystem.  Frontiers in Ecology and Evolution. Vol. 34(4) doi: 10.3389/fevo.2016.00038.

Kammerer, M. A., D. J. Biddinger, N. K. Joshi, E. G. Rajotte, and D. Mortensen.  2016.  Modeling local spatial patterns of wild bee diversity in Pennsylvania apple orchards. Landscape Ecology.  doi: 10.1007/s10980-016-0416-4. 

Kammerer, M. A., D. J. Biddinger, E. G. Rajotte, and D. Mortensen.  2016.  Local plant diversity across multiple habitats supports a diverse wild bee community in Pennsylvania apple orchards.  Environmental Entomology 45(1): 32-38. 

Code, A., J. Hopwood, M. Vaughn, M. Shepherd, D. Biddinger, et al.  2016.  How Neonicotinoids Can Kill Bees: The Science Behind the Role These Insecticides Play in Harming Bees.  The Xerces Society for Invertebrate Conservation, Portland, OR. 88 p.

 Peer &Editor-reviewed books or parts of books:

  1. Hopwood, D. Biddinger, K. Gill, M. Vaughan, E. Lee-Mader, A. Code, N. Joshi, and E. Rajotte. Managing Northeast Apple Orchards for Pollinators and Other Beneficial Insects: Integrated Pest Management, Habitat Enhancement and Managed Bees. Penn State University and Xerces Society for Invertebrate Conservation Joint Publication, 55 p. https://extension.psu.edu/shopby/guides-and-publications?keyword=biddinger
  2. Biddinger, D., E. G. Rajotte, N. K. Joshi*.  2018.  Chapter. 4 Integrating pollinator health into tree fruit IPM- A case study of Pennsylvania apple production (Chapter- 4), p. 69-83.  In: The pollination of cultivated plants: a compendium for practitioners. Vol. 1. (Editor- D. Roubik). Food and Agricultural Organization of the United Nations. 313 p. https://ainfo.cnptia.embrapa.br/digital/bitstream/item/180143/1/I9201EN-1.pdf Concept, applied examples, 50% of writing.
  3. Biddinger, D.  2018.  Conserving predatory mites in apple orchards (or mighty mites conquer mite pests). Box 5.1, pg. 88-89.  In: Natural Enemies: An Introduction to Biological Control. 2nd edition. A. Hajek & J. Eilenberg. Cambridge University Press. 439 p. 

Publications

Erratum
Journal of Hymenoptera Research, Kilpatrick, Shelby Kerrin, Gibbs, Jason, Mikulas, Martin M., Spichiger, Sven Erik, Ostiguy, Nancy, Biddinger, David J., López-Uribe, Margarita M., 2021

Whole-body acute contact toxicity of formulated insecticide mixtures to blue orchard bees (Osmia lignaria)
Toxics, Belsky, Joseph, Biddinger, David J., Joshi, Neelendra K., 2021

A new ingestion bioassay protocol for assessing pesticide toxicity to the adult Japanese orchard bee (Osmia cornifrons)
Scientific Reports, Phan, Ngoc T., Joshi, Neelendra K., Rajotte, Edwin G., López-Uribe, Margarita M., Zhu, Fang, Biddinger, David J., 2020

Pollinator exposure to systemic insecticides and fungicides applied in the previous fall and pre-bloom period in apple orchards
Environmental Pollution, Heller, Sarah, Joshi, Neelendra K., Chen, Jing, Rajotte, Edwin G., Mullin, Chris, Biddinger, David J., 2020

A Method for a Long-Term Marking of Spotted Lanternfly (Hemiptera
Environmental Entomology, Porras, Mitzy F., López-Londonõ, Tomás, Rost, John, Biddinger, David, Calvin, Dennis, Rajotte, Edwin G., Reay-Jones, Francis, 2020

Applications of Beauveria bassiana (Hypocreales
Environmental Entomology, Clifton, Eric H., Hajek, Ann E., Jenkins, Nina E., Roush, Richard T., Rost, John P., Biddinger, David J., Nachappa, Punya, 2020

Erratum
Royal Society Open Science, Vaudo, Anthony D., Biddinger, David J., Sickel, Wiebke, Keller, Alexander, López-Uribe, Margarita M., 2020

Crop production in the USA is frequently limited by a lack of pollinators
Proceedings of the Royal Society B: Biological Sciences, Reilly, J. R., Artz, D. R., Biddinger, D., Bobiwash, K., Boyle, N. K., Brittain, C., Brokaw, J., Campbell, J. W., Daniels, J., Elle, E., Ellis, J. D., Fleischer, S. J., Gibbs, J., Gillespie, R. L., Gundersen, K. B., Gut, L., Hoffman, G., Joshi, N., Lundin, O., Mason, K., McGrady, C. M., Peterson, S. S., Pitts-Singer, T. L., Rao, S., Rothwell, N., Rowe, L., Ward, K. L., Williams, N. M., Wilson, J. K., Isaacs, R., Winfree, R., 2020

Introduced bees (Osmia cornifrons) collect pollen from both coevolved and novel host-plant species within their family-level phylogenetic preferences
Royal Society Open Science, Vaudo, Anthony D., Biddinger, David J., Sickel, Wiebke, Keller, Alexander, López-Uribe, Margarita M., 2020

An updated checklist of the bees (Hymenoptera, Apoidea, Anthophila) of Pennsylvania, United States of America
Journal of Hymenoptera Research, Kilpatrick, Shelby Kerrin, Gibbs, Jason, Mikulas, Martin M., Spichiger, Sven Erik, Ostiguy, Nancy, Biddinger, David J., López-Uribe, Margarita M., 2020

Erratum
Scientific Reports, Heller, Sarah, Joshi, Neelendra K., Leslie, Timothy, Rajotte, Edwin G., Biddinger, David J., 2020

Pollen protein
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

Bee vectoring
Pathogens, Joshi, Neelendra K., Ngugi, Henry K., Biddinger, David J., 2020

Diversified Floral Resource Plantings Support Bee Communities after Apple Bloom in Commercial Orchards
Scientific Reports, Heller, Sarah, Joshi, Neelendra K., Leslie, Timothy, Rajotte, Edwin G., Biddinger, David J., 2019

Evaluation of insecticides for control of the spotted lanternfly, Lycorma delicatula, (Hemiptera
Crop Protection, Leach, Heather, Biddinger, David J., Krawczyk, Greg, Smyers, Erica, Urban, Julie M., 2019

Local and regional climate variables driving spring phenology of tortricid pests
Ecological Entomology, Pak, Damie, Biddinger, David, Bjørnstad, Ottar N., 2019

Apple grower pollination practices and perceptions of alternative pollinators in New York and Pennsylvania
Renewable Agriculture and Food Systems, Park, Mia G., Joshi, Neelendra K., Rajotte, Edwin G., Biddinger, David J., Losey, John E., Danforth, Bryan N., 2018

First Report of Native Astata unicolor (Hymenoptera
Florida Entomologist, Biddinger, David J., Joshi, Neelendra K., 2017

Indigenous arthropod natural enemies of the invasive brown marmorated stink bug in North America and Europe
Journal of Pest Science, Abram, Paul K., Hoelmer, Kim A., Acebes-Doria, Angelita, Andrews, Heather, Beers, Elizabeth H., Bergh, J. Christopher, Bessin, Ric, Biddinger, David, Botch, Paul, Buffington, Matthew L., Cornelius, Mary L., Costi, Elena, Delfosse, Ernest S., Dieckhoff, Christine, Dobson, Rachelyn, Donais, Zachary, Grieshop, Matthew, Hamilton, George, Haye, Tim, Hedstrom, Christopher, Herlihy, Megan V., Hoddle, Mark S., Hooks, Cerruti R.R., Jentsch, Peter, Joshi, Neelendra K., Kuhar, Thomas P., Lara, Jesus, Lee, Jana C., Legrand, Ana, Leskey, Tracy C., Lowenstein, David, Maistrello, Lara, Mathews, Clarissa R., Milnes, Joshua M., Morrison, William R., Nielsen, Anne L., Ogburn, Emily C., Pickett, Charles H., Poley, Kristin, Pote, John, Radl, James, Shrewsbury, Paula M., Talamas, Elijah, Tavella, Luciana, Walgenbach, James F., Waterworth, Rebeccah, Weber, Donald C., Welty, Celeste, Wiman, Nik G., 2017

A native predator utilising the invasive brown marmorated stink bug, Halyomorpha halys (Hemiptera
Biocontrol Science and Technology, Biddinger, David J., Surcică, Alex, Joshi, Neelendra K., 2017

Does passive sampling accurately reflect the bee (apoidea
Environmental Entomology, Gibbs, Jason, Joshi, Neelendra K., Wilson, Julianna K., Rothwell, Nikki L., Powers, Karen, Haas, Mike, Gut, Larry, Biddinger, David J., Isaacs, Rufus, 2017

Seasonal occurrence of spotted wing drosophila in various small fruits and berries in Pennsylvania and Maryland
Journal of Applied Entomology, Joshi, N. K., Butler, B., Demchak, K., Biddinger, D., 2017

Modeling local spatial patterns of wild bee diversity in Pennsylvania apple orchards
Landscape Ecology, Kammerer, Melanie A., Biddinger, David J., Joshi, Neelendra K., Rajotte, Edwin G., Mortensen, David A., 2016

Proximity to woodland and landscape structure drives pollinator visitation in apple orchard ecosystem
Frontiers in Ecology and Evolution, Joshi, Neelendra K., Otieno, Mark, Rajotte, Edwin G., Fleischer, Shelby J., Biddinger, David J., 2016

Local Plant diversity across multiple habitats supports a diverse wild bee community in Pennsylvania apple orchards
Environmental Entomology, Kammerer, Melanie A., Biddinger, David J., Rajotte, Edwin G., Mortensen, David A., 2016

Comparative trapping efficiency to characterize bee abundance, diversity, and community composition in apple orchards
Annals of the Entomological Society of America, Joshi, Neelendra K., Leslie, Timothy, Rajotte, Edwin G., Kammerer, Melanie A., Otieno, Mark, Biddinger, David J., 2015

Biology, ecology, and management of brown marmorated stink bug (Hemiptera
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

Reduced-risk pest management programs for eastern U.S. Peach Orchards
Journal of Economic Entomology, Biddinger, David J., Leslie, Timothy W., Joshi, Neelendra K., 2014

Examining shifts in carabidae assemblages across a forest - Agriculture ecotone
Environmental Entomology, Leslie, T. W., Biddinger, D. J., Rohr, J. R., Hulting, A. G., Mortensen, D. A., Fleischer, S. J., 2014

Observations on the biological control agents of the American plum borer (Lepidoptera
Great Lakes Entomologist, Biddinger, David J., Leslie, Timothy W., 2014

First report of zaprionus indianus (Diptera
Journal of Insect Science, Joshi, Neelendra K., Biddinger, David J., Demchak, Kathleen, Deppen, Alan, 2014

An immunomarking method to determine the foraging patterns of Osmia cornifrons and resulting fruit set in a cherry orchard
Apidologie, Biddinger, David J., Joshi, Neelendra K., Rajotte, Edwin G., Halbrendt, Noemi O., Pulig, Cassandra, Naithani, Kusum J., Vaughan, Mace, 2013

Comparative Toxicities and Synergism of Apple Orchard Pesticides to Apis mellifera (L.) and Osmia cornifrons (Radoszkowski)
PLoS One, Biddinger, David J., Robertson, Jacqueline L., Mullin, Chris, Frazier, James, Ashcraft, Sara A., Rajotte, Edwin G., Joshi, Neelendra K., Vaughn, Mace, 2013