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ARS Home » Pacific West Area » Wapato, Washington » Temperate Tree Fruit and Vegetable Research » People & Locations » David Horton

David R Horton (PhD)
Temperate Tree Fruit and Vegetable Research
Research Entomologist

Phone: (509) 454-5639
Fax: (509) 454-5646

5230 KONNOWAC PASS RD
WAPATO, WA 989519651

(Employee information on this page comes from the REE Directory. Please contact your front office staff to update the REE Directory.)

Projects
New Technologies and Strategies for Managing Emerging Insect Pests and Insect Transmitted Pathogens of Potatoes
In-House Appropriated (D)
  Accession Number: 439448
Integrated Approach to Manage the Pest Complex on Temperate Tree Fruits
In-House Appropriated (D)
  Accession Number: 439454
Areawide Management of Insect Vectors in Columbia Basin Vegetable and Seed Crops
Non-Assistance Cooperative Agreement (S)
  Accession Number: 436896
Identify Non-Crop Host Plants of the Beet Leafhopper and BLTVA in the Columbia Basin
Non-Assistance Cooperative Agreement (S)
  Accession Number: 437859
Identifying Important Parasites and Predators of Potato Psyllid in Non-Crop Habitats of the Columbia Basin
Non-Assistance Cooperative Agreement (S)
  Accession Number: 438303

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Good to know: integrated research. Entomologists at the USDA laboratory in Wapato, Washington, work to advance IPM for orchards - (Trade Journal)
Cooper, W.R., Horton, D.R., Neven, L.G., Serrano, J.M., Walker Iii, W.B., Yee, W.L., Schmidt-Jeffris, R.A. 2022. Good to know: integrated research. Entomologists at the USDA laboratory in Wapato, Washington, work to advance IPM for orchards. Good Fruit Grower. March 1, 2022 Issue.
Factors influencing Trechnites spp. abundance in WA and OR pear orchards - (Abstract Only)
Bacterial endosymbionts of Bactericera maculipennis and three mitochondrial haplotypes of B. cockerelli (Hemiptera: Psylloidea: Triozidae) Reprint Icon - (Peer Reviewed Journal)
Cooper, W.R., Horton, D.R., Swisher Grimm, K.D., Krey, K., Wildung, M.R. 2021. Bacterial endosymbionts of Bactericera maculipennis and three mitochondrial haplotypes of B. cockerelli (Hemiptera: Psylloidea: Triozidae). Environmental Entomology. 51(1):94-107. https://doi.org/10.1093/ee/nvab133.
Crude extracts and alkaloids derived from Ipomoea-Periglandula symbiotic association cause mortality of Asian citrus psyllid Diaphornia citri Kuwayama (Hemiptera: Psyllidae) Reprint Icon - (Peer Reviewed Journal)
Chen, X., Kaur, N., Horton, D.R., Cooper, W.R., Qureshi, J.A., Stelinski, L.L. 2021. Crude extracts and alkaloids derived from Ipomoea-Periglandula symbiotic association cause mortality of Asian citrus psyllid Diaphornia citri Kuwayama (Hemiptera: Psyllidae). Insects. 12(10):929. https://doi.org/10.3390/insects12100929.
Association of Bactericera cockerelli (Hemiptera: Triozidae) with the perennial weed Physalis longifolia(Solanales: Solanaceae) in the potato growing regions of western Idaho Reprint Icon - (Peer Reviewed Journal)
Reyes Corral, C., Cooper, W.R., Horton, D.R., Miliczky, E., Riebe, J., Waters, T., Wildung, M., Karasev, A. 2021. Association of Bactericera cockerelli (Hemiptera: Triozidae) with the perennial weed Physalis longifolia(Solanales: Solanaceae) in the potato growing regions of western Idaho. Environmental Entomology. 50(6);1416-1424. https://doi.org/10.1093/ee/nvab076.
Matrimony Vine: Friend or Foe in the Battle Against Potato Psyllid - (Popular Publication)
Cooper, W.R., Horton, D.R., Wohleb, C.H., Jensen, A.S. 2021. Matrimony Vine: Friend or Foe in the Battle Against Potato Psyllid. Potato Progress. 21;3.
Exotic psyllids and exotic hosts: accumulation of non-native Psylloidea in North America (Hemiptera) Reprint Icon - (Peer Reviewed Journal)
Horton, D.R., Miliczky, G., Waters, T., Burckhardt, D., Halbert, S. 2021. Exotic psyllids and exotic hosts: accumulation of non-native Psylloidea in North America (Hemiptera). Annals of the Entomological Society of America. 114(4):425-447. https://doi.org/10.1093/aesa/saab014.
Stylet probing behavior of two Bactericera (Hemiptera:Psylloidea:Triozidae) species on host and nonhost plants Reprint Icon - (Peer Reviewed Journal)
Mustafa, T., Horton, D.R., Cooper, W.R., Zack, R., Thinakaran, J., Karasev, A., Munyaneza, J.E. 2021. Stylet-probing behavior of two Bactericera species on host and non-host plants (Hemiptera: Psylloidea: Triozidae). Environmental Entomology. 50(4):919-928. https://doi.org/10.1093/ee/nvab031.
Susceptibility of Physalis longifolia (Solanales: Solanaceae) to Bactericera cockerelli (Hemiptera: Triozidae) and “Candidatus Liberibacter solanacearum" Reprint Icon - (Peer Reviewed Journal)
Reyes Corral, C., Cooper, W.R., Horton, D.R., Karasev, A.V. 2020. Susceptibility of Physalis longifolia (Solanales: Solanaceae) to Bactericera cockerelli (Hemiptera: Triozidae) and “Candidatus Liberibacter solanacearum". Journal of Economic Entomology. 113(6): 2595-2603. https://doi.org/10.1093/jee/toaa210.
Host plant and Wolbachia shape the population genetics of sympatric herbivore populations Reprint Icon - (Peer Reviewed Journal)
Fu, Z., Meier, A.R., Epstein, B., Bergland, A.O., Castillo Carrillo, C.I., Cooper, W.R., Cruzado, R.K., Horton, D.R., Jensen, A.S., Kelley, J.L., Rashed, A., Reitz, S.R., Rondon, S.I., Thinakaran, J., Wenninger, E.J., Wohleb, C.H., Crowder, D.W., Snyder, W.E. 2020. Host plant and Wolbachia shape the population genetics of sympatric herbivore populations . Evolutionary Applications. 13:2740-2753.
Mortality of potato psyllid (Hemiptera: Triozidae) on host clippings inoculated with ergot alkaloids Reprint Icon - (Peer Reviewed Journal)
Kaur, N., Cooper, W.R., Duringer, J., Rashed, A., Badillo-Vargas, I., Esparza-Diaz, Horton, D.R. 2020. Mortality of potato psyllid (Hemiptera: Triozidae) on host clippings inoculated with ergot alkaloids. Journal of Economic Entomology. 113(5):2079-2085. https://doi.org/10.1093/jee/toaa144.
The artificial sweetener, erythritol, has insecticidal properties against pear psylla (Hemiptera: Psyllidae) Reprint Icon - (Peer Reviewed Journal)
Wentz, K.M., Cooper, W.R., Horton, D.R., Kao, R., Nottingham, L.B. 2020. The artificial sweetener, erythritol, has insecticidal properties against pear psylla (Hemiptera: Psyllidae). Journal of Economic Entomology. 113(5):2293-2299. https://doi.org/10.1093/jee/toaa124.
Observations on the life history and ecology of Clubiona pacifica Banks in Washington State (Araneae Clubionidae) Reprint Icon - (Peer Reviewed Journal)
Miliczky, E., Horton, D.R., Waters, T., Wohleb, C. 2020. Observations on the life history and ecology of Clubiona pacifica Banks in Washington State (Araneae Clubionidae). Journal of Arachnology. 48(1):49-50. https://doi.org/10.1636/0161-8202-48.1.49.
Dispersal of Bactericera cockerelli (Hemiptera: Triozidae) in relation to phenology of Lycium barbarum (Solanaceae) - (Peer Reviewed Journal)
Cooper, W.R., Horton, D.R., Thinakaran, J., Karasev, A.V. 2020. Dispersal of Bactericera cockerelli (Hemiptera: Triozidae) in relation to phenology of Lycium barbarum (Solanaceae). Journal of British Columbia Entomological Society. 116:25-39.
Identification of new ‘Candidatus Liberibacter solanacearum’ haplotypes in Solanum tuberosum and psyllid family Aphalaridae in Klamath Basin, Oregon - (Abstract Only)
Swisher Grimm, K.D., Garczynski, S.F., Horton, D.R., Charlton, B.A. 2019. Identification of new ‘Candidatus Liberibacter solanacearum’ haplotypes in Solanum tuberosum and psyllid family Aphalaridae in Klamath Basin, Oregon. Phytopathology. 109:S.119-120.
Prototype 3D-printed traps capture Bactericera cockerelli (Šulc) (Hemiptera: Triozidae) directly into preservative for improved detection of "Candidatus Liberibacter solanacearum" Reprint Icon - (Peer Reviewed Journal)
Wentz, K., Cooper, W.R., Horton, D.R., Wohleb, C., Waters, T., Halbert, S., Ramadugu, C., Snyder, J., Kao, R. 2020. Prototype 3D-printed traps capture Bactericera cockerelli (Šulc) (Hemiptera: Triozidae) directly into preservative for improved detection of "Candidatus Liberibacter solanacearum". Journal of Entomological Science. 55(2):147-155. https://doi.org/10.18474/0749-8004-55.2.147.
Host and non-host whistle stops by psyllids: Molecular gut content analysis by high-throughput sequencing reveals landscape-level movements by Psylloidea (Hemiptera) Reprint Icon - (Peer Reviewed Journal)
Cooper, W.R., Horton, D.R., Wildung, M., Jensen, A., Thinakaran, J., Rendon, D., Nottingham, L., Beers, E., Wohleb, C., Hall, D.G., Stelinski, L. 2019. Host and non-host whistle stops by psyllids: Molecular gut content analysis by high-throughput sequencing reveals landscape-level movements by Psylloidea (Hemiptera). Environmental Entomology. 48(3):554-566. https://doi.org/10.1093/ee/nvz038.
The weed link in zebra chip epidemiology - (Trade Journal)
Cooper, W.R., Horton, D.R., Wohleb, C.H., Waters, T.D. 2019. The weed link in zebra chip epidemiology. Potato Progress. 19:4.
The weed link in zebra chip epidemiology: Suitability of non-crop Solanaceae and Convolvulaceae to potato psyllid and Liberibacter solanacearum Reprint Icon - (Peer Reviewed Journal)
Cooper, W.R., Horton, D.R., Miliczky, E., Wohleb, C., Waters, T. 2019. The weed link in zebra chip epidemiology: Suitability of non-crop Solanaceae and Convolvulaceae to potato psyllid and Liberibacter solanacearum. American Journal of Potato Research. 96:262:271. https://doi.org/10.1007/s12230-019-09712-z.
Whence and whither the Convolvulus psyllid? An invasive plant leads to dietary expansion and range expansion by a native insect herbivore (Hemiptera: Triozidae) Reprint Icon - (Peer Reviewed Journal)
Horton, D.R., Kaur, N., Cooper, W.R., Miliczky, E., Badillo Vargas, I., Esparza-Diaz, G., Rashed, A., Waters, T., Wohleb, C., Johnson, D., Kawchuk, L., Jensen, A. 2019. Whence and whither the Convolvulus psyllid? An invasive plant leads to dietary expansion and range expansion by a native insect herbivore (Hemiptera: Triozidae). Annals of the Entomological Society of America. 112(3):249-264. https://doi.org/10.1093/aesa/say063.
The beet leafhopper odyssey in North America: a brief overview - (Trade Journal)
Horton, D.R., Cooper, W.R., Swisher Grimm, K.D., Crowder, D., Fu, Z., Waters, T., Wohleb, C., Frost, K., Jensen, A., Blua, M. 2018. The beet leafhopper odyssey in North America: a brief overview. Potato Progress. 18(16).
The beet leafhopper odyssey in North America: a brief overview - (Trade Journal)
Horton, D.R., Cooper, W.R., Swisher Grimm, K.D., Crowder, D., Fu, Z., Waters, T., Wohleb, C., Frost, K., Jensen, A., Blua, M. 2018. The beet leafhopper odyssey in North America: a brief overview. Potato Progress. 18(16).
Weedy sanctuaries and non-host whistle stops for potato psyllid - (Trade Journal)
Cooper, W.R., Horton, D.R. 2019. Weedy sanctuaries and non-host whistle stops for potato psyllid. Potato Country USA. 35(1):36-38.
Survival and development of potato psyllid (Hemiptera: Triozidae) on Convolvulaceae: effects of a plant-fungus symbiosis (Periglandula) Reprint Icon - (Peer Reviewed Journal)
Kaur, N., Horton, D.R., Cooper, W.R., Badillo-Vargas, I.E., Esparza-Diaz, G., Rashed, A., Duringer, J. 2018. Survival and development of potato psyllid (Hemiptera: Triozidae) on Convolvulaceae: effects of a plant-fungus symbiosis (Periglandula). PLoS One. 13(9):e0201506. https://doi.org/10.1371/journal.pone.0201506.
Building a better Psylloidea (Hemiptera) trap? A field-look at a prototype trap constructed using three-dimensional printer technology Reprint Icon - (Peer Reviewed Journal)
Horton, D.R., Miliczky, E., Lewis, T.M., Wohleb, C., Dickens, A., Halbert, S., Ramadugu, C., Jensen, A. 2018. Building a better Psylloidea (Hemiptera) trap? A field-look at a prototype trap constructed using three-dimensional printer technology. The Canadian Entomologist. 151(1):115-129. https://doi.org/10.4039/tce.2018.59.
Mapping potato psyllid populations in potato in the Columbia Basin of Washington and Oregon from 2013 – 2017 Reprint Icon - (Abstract Only)
Swisher Grimm, K.D., Cueva, I., Wohleb, C., Horton, D.R., Cooper, W.R., Munyaneza, J.E. 2019. Mapping potato psyllid populations in potato in the Columbia Basin of Washington and Oregon from 2013 – 2017. American Journal of Potato Research. 96:327. https://doi.org/10.1007/s12230-019-09723-w.
The “morning glory” psyllid? Potato psyllid development on morning glories and bindweed - (Trade Journal)
Kaur, N., Rashed, A., Horton, D.R., Cooper, W.R., Badillo-Vargas, I., Esparza-Diaz, G., Jensen, A., Johnson, D., Kawchuk, L. 2018. The “morning glory” psyllid? Potato psyllid development on morning glories and bindweed. Potato Progress. 18(11).
The weed link in zebra chip epidemiology: Annual and perennial weeds as sources of the zebra chip pathogen - (Proceedings)
Cooper, W.R., Horton, D.R., Thinakaran, J. 2018. The weed link in zebra chip epidemiology: Annual and perennial weeds as sources of the zebra chip pathogen. American Journal of Potato Research. 95:212.
Pinpointing the weed sources of potato psyllid in Washington - (Proceedings)
Use of Lycium by potato psyllid in the Pacific Northwest lessons from the desert Southwest - (Proceedings)
Thinakaran, J., Horton, D.R., Cooper, W.R., Karasev, A. 2018. Use of Lycium by potato psyllid in the Pacific Northwest lessons from the desert Southwest. American Journal of Potato Research. 95:226.
The latest buzz on bugs - (Trade Journal)
Cooper, W.R., Garczynski, S.F., Horton, D.R., Knight, A.L., Neven, L.G., Yee, W.L. 2018. The latest buzz on bugs. Good Fruit Grower. 69(5):38-40.
Candidatus Phytoplasma pyri affects behavior of Cacopsylla pyricola (Hemiptera: Psyllidae) Reprint Icon - (Peer Reviewed Journal)
Cruz, M., Cooper, W.R., Horton, D.R., Barcenas, N. 2018. Candidatus Phytoplasma pyri affects behavior of Cacopsylla pyricola (Hemiptera: Psyllidae). Journal of Entomological Science. 53(3):361-371. https://doi.org/10.18474/JES17-115.1.
Potato psyllid and the South American desert plant Nolana: an unlikely psyllid host? - (Trade Journal)
Horton, D.R., Miliczky, E., Thinakaran, J., Cooper, W.R., Munyaneza, J., Wohleb, C., Karasev, A. 2017. Potato psyllid and the South American desert plant Nolana: an unlikely psyllid host?. Potato Progress. 17:16.
New North American records for the Old World psyllid Heterotrioza chenopodii (Reuter) with biological observations (Hemiptera: Psylloidea: Triozidae) - (Peer Reviewed Journal)
Horton, D.R., Miliczky, E., Lewis, T.M., Cooper, W.R., Waters, T., Wohleb, C., Zack, R., Johnson, D., Jensen, A. 2018. New North American records for the Old World psyllid Heterotrioza chenopodii (Reuter) with biological observations (Hemiptera: Psylloidea: Triozidae). Proceedings of the Entomological Society of Washington. 120(1):134-152.
Pinpointing the weed source of potato psyllids arriving in Pacific Northwest potatoes - (Trade Journal)
Thinakaran, J., Horton, D.R., Cooper, W.R., Karasev, A. 2017. Pinpointing the weed source of potato psyllids arriving in Pacific Northwest potatoes. Potato Grower. December 2017:44-45.
Potato-related research at USDA-ARS laboratories in Washington and Idaho - (Trade Journal)
Horton, D.R., Cooper, W.R., Landolt, P.J., Thinakaran, J., Miliczky, E., Kaur, N., Navarre, D.A., Brown, C.R., Swisher, K.D., Novy, R.G., Whitworth, J.L. 2017. Potato-related research at USDA-ARS laboratories in Washington and Idaho. Potato Progress. 17(14):1-12.
Association of potato psyllid (Bactericera cockerelli; Hemiptera: Triozidae) with Lycium spp. (Solanaceae) in potato growing regions of Washington, Idaho, and Oregon Reprint Icon - (Peer Reviewed Journal)
Thinakaran, J., Horton, D.R., Cooper, W.R., Jensen, A., Wohleb, C., Dahan, J., Mustafa, T., Karasev, A., Munyaneza, J.E. 2017. Association of potato psyllid (Bactericera cockerelli; Hemiptera: Triozidae) with Lycium spp. (Solanaceae) in potato growing regions of Washington, Idaho, and Oregon. American Journal of Potato Research. 94(5):490-499. https://doi.org/10.1007/s12230-017-9586-0.
Elicitors of host plant defenses partially suppress pear psylla (Cacopsylla pyricola, Hemiptera: Psyllidae) populations under field conditions Reprint Icon - (Peer Reviewed Journal)
Cooper, W.R., Horton, D.R. 2017. Elicitors of host plant defenses partially suppress pear psylla (Cacopsylla pyricola, Hemiptera: Psyllidae) populations under field conditions. Journal of Insect Science. 17(2):49.
Minute pirate bugs - (Book / Chapter)
Bacterial endosymbionts of the psyllid Cacopsylla pyricola in the Pacific Northwestern United States (Hemiptera: Psyllidae) - (Peer Reviewed Journal)
Cooper, W.R., Garczynski, S.F., Horton, D.R., Unruh, T.R., Beers, E., Shearer, P., Hilton, R. 2017. Bacterial endosymbionts of the psyllid Cacopsylla pyricola in the Pacific Northwestern United States (Hemiptera: Psyllidae). Environmental Entomology. 46:393-402.
"Candidatus Liberibacter solanacearum” associated with the psyllid, Bactericera maculipennis (Hemiptera: Triozidae) Reprint Icon - (Peer Reviewed Journal)
Borges, K.M., Cooper, W.R., Garczynski, S.F., Thinakaran, J., Jensen, A., Horton, D.R., Munyaneza, J.E., Cueva, I., Barcenas, N. 2017. "Candidatus Liberibacter solanacearum” associated with the psyllid, Bactericera maculipennis (Hemiptera: Triozidae). Environmental Entomology. 46:210-216.
New geographic records for the Nearctic psyllid Bactericera maculipennis (Crawford) with biological notes and descriptions of the egg and fifth-instar nymph (Hemiptera: Psylloidea: Triozidae) - (Peer Reviewed Journal)
Horton, D.R., Miliczky, E., Lewis, T.M., Cooper, W.R., Munyaneza, J.E., Mustafa, T., Thinakaran, J., Waters, T., Wohleb, C., Jensen, A. 2017. New geographic records for the Nearctic psyllid Bactericera maculipennis (Crawford) with biological notes and descriptions of the egg and fifth-instar nymph (Hemiptera: Psylloidea: Triozidae). Entomological Society of America Proceedings. 119(2):191-214.
Matrimony vine and potato psyllid in the Pacific Northwest: a worrisome marriage? - (Trade Journal)
Horton, D.R., Thinakaran, J., Cooper, W.R., Munyaneza, J.E., Wohleb, C., Waters, T., Snyder, W., Fu, Z., Crowder, D., Jensen, A. 2016. Matrimony vine and potato psyllid in the Pacific Northwest: a worrisome marriage?. Potato Progress. 16:14.
Assessing the likelihood of transmission of ‘Candidatus Liberibacter solanacearum’ to carrot by potato psyllid, Bactericera cockerelli (Hemiptera: Triozidae) - (Peer Reviewed Journal)
Munyaneza, J.E., Mustafa, T., Fisher, T., Sengoda, V., Horton, D.R. 2016. Assessing the likelihood of transmission of ‘Candidatus Liberibacter solanacearum’ to carrot by potato psyllid, Bactericera cockerelli (Hemiptera: Triozidae). PLoS One. 11(8):e0161016. doi:10.1371/journal.pone.0161016.
Gut content analysis of arthropod predators of codling moth in Washington apple orchards - (Peer Reviewed Journal)
Unruh, T.R., Miliczky, E., Horton, D.R., Thomsen Archer, K.L., Rehfield-Ray, L.M., Jones, V. 2016. Gut content analysis of arthropod predators of codling moth in Washington apple orchards. Biological Control. 102:85-92.
Pesticides used against Cydia pomonella disrupt biological control of secondary pests of apple - (Peer Reviewed Journal)
Beers, E., Horton, D.R., Miliczky, E. 2016. Pesticides used against Cydia pomonella disrupt biological control of secondary pests of apple. Biological Control. 102:35-43.
Gut content analysis of a phloem-feeding insect, Bactericera cockerelli (Sulc) (Hemiptera: Triozidae) Reprint Icon - (Peer Reviewed Journal)
Cooper, W.R., Horton, D.R., Unruh, T.R., Garczynski, S.F. 2016. Gut content analysis of a phloem-feeding insect, Bactericera cockerelli (Sulc) (Hemiptera: Triozidae). Environmental Entomology. 45:938-944.
Using plant volatile traps to estimate the diversity of natural enemy communities in orchard ecosystems Reprint Icon - (Peer Reviewed Journal)
Mills, N.J., Jones, V.P., Baker, C.C., Melton, T.D., Steffan, S.A., Unruh, T.R., Horton, D.R., Shearer, P.W., Amarasekare, K.G., Miliczky, E. 2016. Using plant volatile traps to estimate the diversity of natural enemy communities in orchard ecosystems. Biological Control. 102:66-76. doi: 10.1016/j.biocontrol.2016.05.001.
Nontarget effects of orchard pesticides on natural enemies: lessons from the field and laboratory - (Peer Reviewed Journal)
Beers, E., Mills, N., Shearer, P., Horton, D.R., Miliczky, E., Amarasekare, K., Gontijo, L. 2016. Nontarget effects of orchard pesticides on natural enemies: lessons from the field and laboratory. Biological Control. 102:44-52.
Morphological and genetic reappraisal of the Orius fauna of the western United States (Hemiptera: Heteroptera: Anthocoridae) - (Peer Reviewed Journal)
Horton, D.R., Lewis, T.M., Garczynski, S.F., Thomsen Archer, K.L., Unruh, T.R. 2016. Morphological and genetic reappraisal of the Orius fauna of the western United States (Hemiptera: Heteroptera: Anthocoridae). Annals of the Entomological Society of America. doi: 10.1093/aesa/sav155.
Horizontal transmission of "Candidatus Liberibacter solanacearum" by Bactericera cockerelli (Hemiptera: Triozidae) on Convolvulus and Ipomoea (Solanales: Convolvulaceae) Reprint Icon - (Peer Reviewed Journal)
Torres, G.L., Cooper, W.R., Horton, D.R., Swisher, K.D., Garczynski, S.F., Munyaneza, J.E., Barcenas, N.M. 2015. Horizontal transmission of "Candidatus Liberibacter solanacearum" by Bactericera cockerelli (Hemiptera: Triozidae) on Convolvulus and Ipomoea (Solanales: Convolvulaceae). PLoS One. doi: 10.1371/journal.pone.0142734.
Use of Electrical Penetration Graph Technology to Examine Transmission of ‘Candidatus Liberibacter solanacearum’ to Potato by Three Haplotypes of Potato Psyllid (Bactericera cockerelli; Hemiptera: Triozidae) - (Peer Reviewed Journal)
Mustafa, T., Horton, D.R., Cooper, W.R., Swisher, K.D., Zack, R.R., Pappu, H.R., Munyaneza, J.E. 2015. Use of Electrical Penetration Graph Technology to Examine Transmission of ‘Candidatus Liberibacter solanacearum’ to Potato by Three Haplotypes of Potato Psyllid (Bactericera cockerelli; Hemiptera: Triozidae). PLoS One. 10(9):e01 38946. doi:10.1371/journal.pone.0138946.
Effects of elicitors of host plant defenses on pear psylla (Cacopsylla pyricola: Psyllidae) Reprint Icon - (Peer Reviewed Journal)
Cooper, W.R., Horton, D.R. 2015. Effects of elicitors of host plant defenses on pear psylla (Cacopsylla pyricola: Psyllidae). Entomologia Experimentalis et Applicata. 157:300-306.
First nearctic records for Orius (Dimorphella) sibiricus Wagner (Hemiptera: Heteroptera: Anthocoridae), a Eurasian steppe inhabitant - (Peer Reviewed Journal)
Lewis, T.M., Horton, D.R., Lattin, J.D. 2015. First nearctic records for Orius (Dimorphella) sibiricus Wagner (Hemiptera: Heteroptera: Anthocoridae), a Eurasian steppe inhabitant. Proceedings of the Entomological Society of Washington. 117(3):389-399.
Beneficial or not? Decoding carnivore roles in plant protection Reprint Icon - (Peer Reviewed Journal)
Steffan, S.A., Chikaraishi, Y., Horton, D.R., Miliczky, E., Zalapa, J.E., Jones, V.P., Ohkouchi, N. 2015. Beneficial or not? Decoding carnivore roles in plant protection. Biological Control. 91:34-41. doi: 10.1016/j.biocontrol.2015.07.002.
A new problem and old questions: potato psyllid in the Pacific Northwest - (Peer Reviewed Journal)
Horton, D.R., Cooper, W.R., Munyaneza, J.E., Swisher, K.D., Echegaray, E., Murphy, A., Rondon, S., Wohleb, C., Waters, T., Jensen, A. 2015. A new problem and old questions: potato psyllid in the Pacific Northwest. American Entomologist. 61(4):234-244.
Relative abundance of Carsonella ruddii (Gamma Proteobacterium) in females and males of Cacopsylla pyricola (Hemiptera: Psyllidae) and Bactericera cockerelli (Hemiptera: Triozidae) Reprint Icon - (Peer Reviewed Journal)
Cooper, W.R., Garczynski, S.F., Horton, D.R. 2015. Relative abundance of Carsonella ruddii (Gamma Proteobacterium) in females and males of Cacopsylla pyricola (Hemiptera: Psyllidae) and Bactericera cockerelli (Hemiptera: Triozidae). Journal of Insect Science. 15:65.
Matrimony vine/Goji berries – potential overwintering host for potato psyllids in the Pacific Northwest - (Proceedings)
Thinakaran, J., Cooper, W.R., Munyaneza, J.E., Horton, D.R. 2015. Matrimony vine/Goji berries – potential overwintering host for potato psyllids in the Pacific Northwest. Meeting Proceedings. Pp 76-79.
Potato psyllids and their bacterial allies: Two fronts in the war against zebra chip disease. - (Proceedings)
Cooper, W.R., Swisher, K.D., Garczynski, S.F., Mustafa, T., Munyaneza, J.E., Horton, D.R. 2015. Potato psyllids and their bacterial allies: Two fronts in the war against zebra chip disease.. Meeting Proceedings. Pp 1-5.
Evaluating plant volatiles for monitoring natural enemies in apple, pear and walnut orchards Reprint Icon - (Peer Reviewed Journal)
Jones, V.P., Horton, D.R., Mills, N.J., Unruh, T.R., Baker, C.C., Melton, T.D., Miliczky, E., Steffan, S.A., Shearer, P.W., Amarasekare, K.G. 2015. Evaluating plant volatiles for monitoring natural enemies in apple, pear and walnut orchards. Biological Control. 102:53-65. doi: 10.1016/j.biocontrol.2015.03.009.
From planning to execution to the future: An overview of a concerted effort to enhance biological control in apple, pear, and walnut orchards in the western U.S. Reprint Icon - (Peer Reviewed Journal)
Jones, V.P., Mills, N.J., Brunner, J.F., Horton, D.R., Beers, E.H., Unruh, T.R., Shearer, P.W., Goldberger, J.R., Castagnoli, S., Lehrer, N., Miliczky, E., Steffan, S.A., Amarasakare, K.G., Chambers, U., et al. 2016. From planning to execution to the future: An overview of a concerted effort to enhance biological control in apple, pear, and walnut orchards in the western U.S. Biological Control. 102:1-6. doi: 10.1016/j.biocontrol.2016.03.013.
Assessing reproduction of potato psyllid haplotypes - (Proceedings)
Mustafa, T., Munyaneza, J.E., Horton, D.R., Cooper, W.R., Swisher, K.D., Zack, R.S. 2015. Assessing reproduction of potato psyllid haplotypes. Meeting Proceedings. pp. 72-76.
Liberibacter transmission efficiency among potato psyllid haplotypes - (Proceedings)
Mustafa, T., Munyaneza, J.E., Swisher, K.D., Horton, D.R., Zack, R. 2015. Liberibacter transmission efficiency among potato psyllid haplotypes. Meeting Proceedings. pp. 68-71.
Non-potato host plants of potato psyllid in the Pacific Northwest: a year-round complication? - (Trade Journal)
Horton, D.R., Cooper, W.R., Munyaneza, J.E., Swisher, K.D., Wohleb, C., Waters, T., Jensen, A. 2015. Non-potato host plants of potato psyllid in the Pacific Northwest: a year-round complication?. Potato Progress. 15:2.
Effects of host plant on development and body size of three haplotypes of Bactericera cockerelli (Hemiptera:Triozidae) - (Peer Reviewed Journal)
Mustafa, T., Horton, D.R., Swisher, K.D., Zack, R., Munyaneza, J.E. 2015. Effects of host plant on development and body size of three haplotypes of Bactericera cockerelli (Hemiptera:Triozidae). Environmental Entomology. 44:593-600.
Using plant volatile traps to develop phenology models for natural enemies: an example using Chrysopa nigricornis (Burmeister) (Neuroptera: Chrysopidae) - (Peer Reviewed Journal)
Jones, V., Horton, D.R., Mills, N., Unruh, T.R., Miliczky, E., Shearer, P., Baker, C., Melton, T. 2016. Using plant volatile traps to develop phenology models for natural enemies: an example using Chrysopa nigricornis (Burmeister) (Neuroptera: Chrysopidae). Biological Control. 102:77-84.
Wolbachia infection differs among divergent mitochondrial haplotypes of Bactericera cockerelli (Hemiptera: Triozidae) Reprint Icon - (Peer Reviewed Journal)
Cooper, W.R., Swisher, K.D., Garczynski, S.F., Mustafa, T., Munyaneza, J.E., Horton, D.R. 2015. Wolbachia infection differs among divergent mitochondrial haplotypes of Bactericera cockerelli (Hemiptera: Triozidae). Annals of the Entomological Society of America. 108(2):137-145.
Interhaplotype fertility and host effects of potato and bittersweet nightshade on selected reproductive traits of three haplotypes of Bactericera cockerelli (Hemiptera: Triozidae) - (Peer Reviewed Journal)
Mustafa, T., Horton, D.R., Cooper, W.R., Swisher, K.D., Zack, R.S., Munyaneza, J.E. 2015. Interhaplotype fertility and host effects of potato and bittersweet nightshade on selected reproductive traits of three haplotypes of Bactericera cockerelli (Hemiptera: Triozidae). Environmental Entomology. 44:300-308.
Reproductive status of overwintering potato psyllid: absence of photoperiod effects - (Proceedings)
Horton, D.R., Miliczky, E., Munyaneza, J.E., Swisher, K.D., Jensen, A. 2014. Reproductive status of overwintering potato psyllid: absence of photoperiod effects. Meeting Proceedings. 100-103.
Beneficial or not? Carnivore trophic position under the lens of amino acid isotopic analysis - (Abstract Only)
Steffan, S.A., Chikaraishi, Y., Horton, D.R., Miliczky, E., Zalapa, J.E., Jones, V., Ohkouchi, N. 2014. Beneficial or not? Carnivore trophic position under the lens of amino acid isotopic analysis [abstract]. Entomological Society of America Annual Meeting. Paper No. 1420.
Wolbachia-infection differs among potato psyllid haplotypes - (Proceedings)
Cooper, W.R., Mustafa, T., Swisher, K.D., Garczynski, S.F., Munyaneza, J.E., Horton, D.R. 2015. Wolbachia-infection differs among potato psyllid haplotypes. American Journal of Potato Research. 92:182.
Absence of photoperiod effects on mating and ovarian maturation by three haplotypes of potato psyllid, Bactericera cockerelli (Hemiptera: Triozidae) - (Peer Reviewed Journal)
Horton, D.R., Miliczky, E., Munyaneza, J.E., Swisher, K.D., Jensen, A. 2014. Absence of photoperiod effects on mating and ovarian maturation by three haplotypes of potato psyllid, Bactericera cockerelli (Hemiptera: Triozidae). Journal of British Columbia Entomological Society. 111:1-2.
Trophic spectra under the lens of amino acid isotopic analysis - (Abstract Only)
Steffan, S.A., Chikaraishi, Y., Horton, D.R., Miliczky, E., Zalapa, J.E., Jones, V., Ohkouchi, N. 2014. Trophic spectra under the lens of amino acid isotopic analysis [abstract]. Entomological Society of America Annual Meeting North Central Branch.
What is the source of potato psyllids colonizing Washington, Oregon, and Idaho potato fields? - (Trade Journal)
Horton, D.R., Munyaneza, J.E., Swisher, K.D., Echegaray, E., Murphy, A., Rondon, S., Sengoda, V., Neven, L.G., Jensen, A. 2014. What is the source of potato psyllids colonizing Washington, Oregon, and Idaho potato fields?. Potato Progress. 14(2): 1-7.
Arthropod fauna of rolled alder leaves in Washington State, United States of America (Insecta: Arachnida) Reprint Icon - (Peer Reviewed Journal)
Miliczky, E., Horton, D.R., Lagasa, E. 2014. Arthropod fauna of rolled alder leaves in Washington State, United States of America (Insecta: Arachnida). The Canadian Entomologist. DOI:10.4039/tce.2013.84.
Releases of insectary-reared Galendromus occidentalis (Acari: Phytoseiidae) in commercial apple orchards Reprint Icon - (Peer Reviewed Journal)
Schmidt, R.A., Beers, E.H., Unruh, T.R., Horton, D.R. 2013. Releases of insectary-reared Galendromus occidentalis (Acari: Phytoseiidae) in commercial apple orchards. Journal of Economic Entomology. 106(5):1996-2005.
Gender- and species-specific characteristics of bacteriomes from three psyllid species (Hemiptera: Psylloidae) Reprint Icon - (Peer Reviewed Journal)
Cooper, W.R., Horton, D.R. 2014. Gender- and species-specific characteristics of bacteriomes from three psyllid species (Hemiptera: Psylloidae). Journal of Entomological Science. 49(2):190-194.
Trophic hierarchies illuminated via amino acid isotopic analysis Reprint Icon - (Peer Reviewed Journal)
Steffan, S.A., Chikaraishi, Y., Horton, D.R., Ohkouchi, N., Singleton, M., Hogg, D.B., Miliczky, E., Jones, V. 2013. Trophic hierarchies illuminated via amino acid isotopic analysis. PLoS One. 8(9):e76152. Available: http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0076152.
Trophic hierarchies revealed via amino acid isotopic analysis - (Abstract Only)
Steffan, S.A., Chikaraishi, Y., Horton, D.R., Ohkouchi, N. 2013. Trophic hierarchies revealed via amino acid isotopic analysis [abstract]. Ecological Society of America (ESA). Paper No. COS 59-2.
Interceptions of Anthocoridae, Lasiochilidae, and Lyctocoridae at the Miami Plant Inspection Station (Hemiptera: Heteroptera) Reprint Icon - (Peer Reviewed Journal)
Horton, D.R., Lewis, T.M., Dobbs, T.T. 2013. Interceptions of Anthocoridae, Lasiochilidae, and Lyctocoridae at the Miami Plant Inspection Station (Hemiptera: Heteroptera). Florida Entomologist. 96(2):482-497. DOI:http://dx.doi.org/10.1653/024.096.0214.
Identification of feeding stimulants for Pacific coast wireworm by use of a filter paper assay (Coleoptera: Elateridae) - (Peer Reviewed Journal)
Horton, D.R., Guedot, C., Landolt, P.J. 2012. Identification of feeding stimulants for Pacific coast wireworm by use of a filter paper assay (Coleoptera: Elateridae). Journal of British Columbia Entomological Society. 109:38-47.
Experimental infection of plants with an herbivore-associated bacterial endosymbiont influences herbivore host selection behavior - (Peer Reviewed Journal)
Davis, T.S., Horton, D.R., Munyaneza, J.E., Landolt, P.J. 2012. Experimental infection of plants with an herbivore-associated bacterial endosymbiont influences herbivore host selection behavior. PLoS One. 7(11):e49330. doi:10.1371/journal.pone.0049330.
Tree fruit IPM programs in the Western United States: the challenge of enhancing biological control through intensive management - (Peer Reviewed Journal)
Jones, V., Unruh, T.R., Horton, D.R., Mills, N., Brunner, J., Beers, E., Shearer, P. 2009. Tree fruit IPM programs in the Western United States: the challenge of enhancing biological control through intensive management. Pest Management Science. 65:1305-1310.
PEAR INSECTS, ECOLOGY AND CONTROL - (Book / Chapter)
Horton, D.R., Unruh, T.R. 2007. Pear Insects: Ecology and Control. Encyclopedia of Pest Management, 1:1, 1-4. URL: http://dx.doi.org/10.1081/E-EPM-120041162
HOW DEEP ARE WIREWORMS IN THE SPRING? - (Popular Publication)
Horton, D.R. 2005. How deep are wireworms in the spring?. Potato Progress. V(12):2-4.
OVARIAN DEVELOPMENT AND LIPID RESERVES ARE AFFECTED BY MATING DELAYS IN THREE SPECIES OF ANTHOCORIS (HETEROPTERA: ANTHOCORIDAE) - (Peer Reviewed Journal)
Horton, D.R., Lewis, T.M., Neven, L.G. 2005. Ovarian development and lipid reserves are affected by mating delays in three species of anthocoris (heteroptera: anthocoridae). The Canadian Entomologist. 137(3):328-336.
NEW STATE AND UNITED STATES RECORDS FOR ANTHOCORIDAE (HEMIPTERA: HETEROPTERA) - (Peer Reviewed Journal)
Lewis, T.M., Horton, D.R., Broers, D.A. 2005. New state and United States records for Anthocoridae (Hemiptera:Heteroptera). Pan Pacific Entomology. 81:59-67.
BIOLOGY OF PACIFIC COAST AND SUGARBEET WIREWORM IN THE COLUMBIA BASIN - (Trade Journal)
Horton, D.R. 2004. Biology of Pacific coast and sugarbeet wireworm in the Columbia Basin. Potato Progress. IV(10):1-4.
ECOLOGICAL AND GEOGRAPHIC RANGE EXPANSION OF THE INTRODUCED PREDATOR ANTHOCORIS NEMORALIS (HETEROPTERA:ANTHOCORIDAE) - (Peer Reviewed Journal)
Horton, D.R., Lewis, T.M., Broers, D.A. 2004. Ecological and geographic range expansion of the introduced predator Anthocoris nemoralis (Heteroptera:Anthocoridae). American Entomologist. 50:18-30.
ANTHOCORIS TRISTIS VAN DUZEE, 1921, A SYNONYM OF ANTHOCORIS WHITEI REUTER, 1884 (HEMIPTERA: HERTEROPTERA: ANTHOCORIDAE) - (Peer Reviewed Journal)
Lewis, T.M., Horton, D.R., Lattin, J.D. 2004. Anthocoris tristis Van Duzee, 1921, a synonym of Anthocoris whitei, Reuter, 1884 (Hemiptera: Heteroptera: Anthocoridae). Pan-Pacific Entomologist. 79:155.
MICROBIAL CONTROL OF THE COLORADO POTATO BEETLE IN IRRIGATED DESERT: COMBINATIONS AND ALTERNATIONS OF BACILLUS THURINGIENSIS AND BEAUVERIA BASSIANA - (Abstract Only)
Lacey, L.A., Horton, D.R. 2003. Microbial control of the Colorado potato beetle in irrigated desert: combinations and alternations of Bacillus thuringiensis and Beauveria bassiana. Society of Invertebrate Pathology. p.59.
DIVERSITY AND PHENOLOGY OF PREDATORY ARTHROPODS OVERWINTERING IN CARDBOARD BANDS PLACED IN PEAR AND APPLE ORCHARDS OF CENTRAL WASHINGTON - (Peer Reviewed Journal)
Horton, D.R., Broers, D.A., Hinojosa, T.L., Lewis, T.M., Miliczky, E.R., Lewis, R.R. 2002. Diversity and phenology of predatory arthropods overwintering in cardboard bands placed in pear and apple orchards of central Washington. Annals of the Entomological Society of America. 95:469-480.
ORIENTATION RESPONSE OF THE PACIFIC COAST WIREWORM (COLEOPTERA: ELATERIDAE) TO FOOD BAITS IN THE LABORATORY AND EFFECTIVENESS OF BAITS IN THE FIELD - (Peer Reviewed Journal)
Horton, D.R., Landolt, P.J. 2002. Orientation response of the Pacific coast wireworm (Coleoptera: Elateridae) to food baits in the laboratory and effectiveness of baits in the field. The Canadian Entomologist. 134:357-367.
COPULATION DURATION IN THREE SPECIES OF ANTHOCORIS (HETEROPTERA: ANTHOCORIDAE) AT DIFFERENT TEMPERATURES AND EFFECTS ON INSEMINATION AND OVARIAN DEVELOPMENT - (Peer Reviewed Journal)
Horton, D.R., Lewis, T.M., Hinojosa, T.L. 2002. Copulation duration in three species of Anthocoris (Heteroptera: Anthocoridae) at different temperatures and effects on insemination and ovarian development. Pan-Pacific Entomologist. 73:43-55.
MONITORING OF WIREWORM LARVAE IN POTATOES - (Trade Journal)
Landolt, P.J., Horton, D.R. 2001. Monitoring of wireworm larvae in potatoes. Potato Progress. 1:1-2.
BUCHANANIELLA CONTINUA (WHITE) FROM CALIFORNIA, AN ANTHOCORIDAE NEW TO THE UNITED STATES WITH NEW SYNONYMY (HEMIPTERA: HETEROPTERA) - (Proceedings)
Lattin, J.D., Lewis, T.M., Horton, D.R. 2001. Buchananiella continua (white) from California, an anthocoridae new to the United States with new synonymy (Hemiptera: Heteroptera). Proceedings of the Entomological Society of Washington. 103:558-560.
SEASONAL DISTRIBUTION OF ANTHOCORIS SPP. AND DERAEOCORIS BREVIS (UHLER) IN SOME ORCHARD AND NON-ORCHARD HABITATS OF CENTRAL WASHINGTON (HETEROPTERA: ANTHOCORIDAE, MIRIDAE) - (Peer Reviewed Journal)
Horton, D.R., Lewis, T.M. 2000. Seasonal distribution of Anthocoris spp. and Deraeocoris brevis (Uhler) in some orchard and non-orchard habitats of central Washington (Heteroptera: Anthocoridae, Miridae). Annals of the Entomological Society of America. 93:476-485.
USE OF JAPANESE BEETLE TRAPS TO MONITOR FLIGHT OF THE PACIFIC COAST WIREWORM, LIMONIUS CANUS (COLEOPTERA: ELATERIDAE), AND EFFECTS OF TRAP HEIGHT AND COLOR - (Peer Reviewed Journal)
Horton, D.R., Landolt, P.J. 2002. Use of Japanese beetle traps to monitor flight of the Pacific coast wireworm, Limonius canus (Coleoptera: Elateridae), and effects of trap height and color. Journal of the Entomological Society of British Columbia. 98:235-242.
COPULATION DURATION AND PROBABILITY OF INSEMINATION IN ANTHOCORIS WHITEI REUTER (HETEROPTERA: ANTHOCORIDAE) AS A FUNCTION OF MALE BODY SIZE - (Peer Reviewed Journal)
Horton, D.R., Lewis, T.M., Hinojosa, T.L. 2001. Copulation duration and probability of insemination in Anthocoris whitei Reuter (Heteroptera: Anthocoridae) as a function of male body size. The Canadian Entomologist. 133:109-117.
NUMBERS, DIVERSITY, AND PHENOLOGY OF SPIDERS (ARANEAE) OVERWINTERING IN CARDBOARD BANDS PLACED IN PEAR AND APPLE ORCHARDS OF CENTRAL WASHINGTON - (Peer Reviewed Journal)
Horton, D.R., Miliczky, E.R., Broers, D.A., Lewis, R.R., Calkins, C.O. 2001. Numbers, diversity, and phenology of spiders (Araneae) overwintering in cardboard bands placed in pear and apple orchards of central Washington. Annals of the Entomological Society of America. 95:469-480.
NATURAL ENEMIES IN ORCHARDS: SOME TOPICS FOR RESEARCH - (Trade Journal)
Horton, D.R. 2000. Natural enemies in orchards: some topics for research. Good Fruit Grower. 51(12):17-18.
THE POTENTIAL FOR INSECT PATHOGENS AS CONTROL AGENTS OF PEST INSECTS OF POTATO. - (Proceedings)
Lacey, L.A., Horton, D.R. 2000. The potential for insect pathogens as control agents of pest insects of potato. Proceedings Washington State Potato Conference. 85-87.
MATING PREFERENCE, MATING PROPENSITY, AND REPRODUCTIVE TRAITS IN ANTHOCORIS NEMORALIS (FABRICIUS) (HETEROPTERA: ANTHOCORIDAE): A COMPARISON OF CALIFORNIA AND UNITED KINGDOM POPULATIONS - (Peer Reviewed Journal)
Horton, D.R., Hinojosa, T.L., Lewis, T.M. 2000. Mating preference, mating propensity, and reproductive traits in Anthocoris nemoralis (Fabricius) (Heteroptera: Anthocoridae): a comparison of California and United Kingdom populations. Annals of the Entomological Society of America. 93:663-672.
SPIDER ABUNDANCE AND DIVERSITY IN APPLE ORCHARDS UNDER THREE INSECT PEST MANAGEMENT PROGRAMS IN WASHINGTON STATE - (Peer Reviewed Journal)
Miliczky, E.R., Calkins, C.O., Horton, D.R. 2000. Spider abundance and diversity in apple orchards under three insect pest management programs in Washington state. Agricultural and Forest Meteorology. 2:203-215.
COMPARATIVE EFFICACY OF BEAUVERIA BASSIANA, BACILLUS THURINGIENSIS, AND ALDICARB FOR CONTROL OF COLORADO POTATO BEETLE IN AN IRRIGATED DESERT AGROECOSYSTEM AND THEIR EFFECTS ON BIODIVERSITY - (Peer Reviewed Journal)
Lacey, L.A., Horton, D.R., Chauvin, R.L., Stocker, J.M. 1999. Comparative efficacy of Beauveria bassiana, Bacillus thuringiensis, and Aldicarb for control of Colorado potato beetle in an irrigated desert agroecosystem and their effects on biodiversity. Entomologia Experimentalis et Applicata. 93:189-200.
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