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Rodrigo Krugner (PhD)
Crop Diseases, Pests and Genetics Research
Research Entomologist

Phone: (559) 596-2887
Fax: (559) 596-2851

9611 S. RIVERBEND AVE.
PARLIER, CA 93648
Projects
Identification of Novel Management Strategies for Key Pests and Pathogens of Grapevine with Emphasis on the Xylella Fastidiosa Pathosystem
In-House Appropriated (D)
  Accession Number: 432290
Identification of Behavioral Mechanisms for Potential Suppression of Black Widow Spiders, Lactrodectus hesperus Chamberlin and Ivie, in Vineyards
Non-Assistance Cooperative Agreement (S)
  Accession Number: 437632
Identification of Behavioral Mechanisms for Potential Suppression of Black Widow Spiders, Latrodectus Hesperus Chamberlin and Ivie, in Vineyards
Trust Fund Cooperative Agreement (T)
  Accession Number: 436611

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Genome sequence resource of ‘Candidatus Liberibacter asiaticus’ from Brazil Reprint Icon - (Peer Reviewed Journal)
Silva, P., Huang, J., Wulff, N., Krugner, R., Chen, J. 2020. Genome sequence resource of ‘Candidatus Liberibacter asiaticus’ from Brazil. Plant Disease. https://doi.org/10.1094/PDIS-05-20-1018-A.
Complete genome sequences of three Xylella fastidiosa subspecies multiplex strains isolated from olive trees in California, USA. Reprint Icon - (Peer Reviewed Journal)
O'Leary, M.L., Burbank, L.P., Krugner, R., Stenger, D.C. 2020. Complete genome sequences of three Xylella fastidiosa subspecies multiplex strains isolated from olive trees in California, USA. Phytopathology. Available: https://doi.org/10.1094/PHYTO-05-20-0167-A.
Xylella fastidiosa and glassy-winged sharpshooter population dynamics in the southern San Joaquin Valley of California Reprint Icon - (Peer Reviewed Journal)
Sisterson, M.S., Burbank, L.P., Krugner, R., Haviland, D., Stenger, D.C. 2020. Xylella fastidiosa and glassy-winged sharpshooter population dynamics in the southern San Joaquin Valley of California. Plant Disease. https://doi.org/10.1094/PDIS-01-20-0066-RE.
Targeted mutations in Xylella fastidiosa affect acquisition and retention by the glassy-winged sharpshooter, Homalodisca vitripennis Reprint Icon - (Peer Reviewed Journal)
Sengoda-Gounder, V., Shi, X., Krugner, R., Backus, E.A., Lin, H. 2020. Targeted mutations in Xylella fastidiosa affect acquisition and retention by the glassy-winged sharpshooter, Homalodisca vitripennis. Journal of Economic Entomology. 113(2):612-621. https://doi.org/10.1093/jee/toz352.
Insights for understanding ‘Nemaguard’ immunity mechanism against Xylella fastidiosa - (Abstract Only)
Krugner, R., Ledbetter, C.A., Rogers, E.E., Burbank, L.P. 2019. Insights for understanding ‘Nemaguard’ immunity mechanism against Xylella fastidiosa. CDFA Pierce's Disease Control Program Research Symposium. p. 133.
Transmission of the frequency components of the vibrational signal of the glassy-winged sharpshooter, Homalodisca vitripennis, in and between grapevines Reprint Icon - (Peer Reviewed Journal)
Gordon, S.D., Tiller, B., Windwill, J., Krugner, R., Narins, P. 2019. Transmission of the frequency components of the vibrational signal of the glassy-winged sharpshooter, Homalodisca vitripennis, in and between grapevines. Journal of Comparative Physiology. 205:783-791. https://doi.org/10.1007/s00359-019-01366-W.
Nemaguard’ xylem sap is not an effective mouth wash for Xylella fastidiosa-infected vectors - (Proceedings)
Krugner, R., Ledbetter, C.A., Rogers, E.E. 2019. Nemaguard’ xylem sap is not an effective mouth wash for Xylella fastidiosa-infected vectors. In: Proceedings of the Second European conference on Xylella fastidiosa 2019, October 29-30, 2019, Ajaccio, France. p. 86.
Individual field-collected glassy-winged sharpshooter vectors harbor sequences from two Xylella fastidiosa subspecies Reprint Icon - (Peer Reviewed Journal)
Stenger, D.C., Burbank, L.P., Krugner, R., Sisterson, M.S. 2019. Individual field-collected glassy-winged sharpshooter vectors harbor sequences from two Xylella fastidiosa subspecies. European Journal of Plant Pathology. 155:329-388. https://doi.org/10.1007/s10658-019-01742-x.
Sharpshooters: a review of what moves Xylella fastidiosa Reprint Icon ()
Krugner, R., Sisterson, M.S., Backus, E.A., Burbank, L.P., Redak, R. 2019. Sharpshooters: a review of what moves Xylella fastidiosa. Austral Entomology. https://doi.org/10.1111/aen.12397.
Prokaryotic community of a glassy-winged sharpshooter infected with Xylella fastidiosa - (Abstract Only)
Chen, J., Krugner, R., Bao, M. 2018. Prokaryotic community of a glassy-winged sharpshooter infected with Xylella fastidiosa. CDFA Pierce's Disease Control Program Research Symposium. p. 168.
Genotyping Xylella fastidiosa present in the glassy-winged sharpshooter in the General Beale area of Kern County, California - (Abstract Only)
Stenger, D.C., Burbank, L.P., Krugner, R., Sisterson, M.S. 2018. Genotyping Xylella fastidiosa present in the glassy-winged sharpshooter in the General Beale area of Kern County, California. CDFA Pierce's Disease Control Program Research Symposium. p. 140.
Epidemiology of Pierce’s disease in the General Beale area of Kern County - (Abstract Only)
Sisterson, M.S., Burbank, L.P., Krugner, R., Stenger, D.C., Haviland, D. 2018. Epidemiology of Pierce’s disease in the General Beale area of Kern County. CDFA Pierce's Disease Control Program Research Symposium. p. 139.
Assessment of transmission, adaptation, and competition of mutant strains of Xylella fastidiosa by glassy-winged sharpshooter (Homalodisca vitripennis) - (Abstract Only)
Lin, H., Sengoda-Gounder, V., Shi, X., Krugner, R., Backus, E.A. 2018. Assessment of transmission, adaptation, and competition of mutant strains of Xylella fastidiosa by glassy-winged sharpshooter (Homalodisca vitripennis). CDFA Pierce's Disease Control Program Research Symposium. p. 138.
Plant water stress and vector feeding preference mediate transmission efficiency of a plant pathogen Reprint Icon - (Peer Reviewed Journal)
Del Cid, C., Krugner, R., Zeilinger, A.R., Daugherty, M., Almeida, R.P. 2018. Plant water stress and vector feeding preference mediate transmission efficiency of a plant pathogen. Environmental Entomology. 47(6):1471-1478. https://doi.org/10.1093/ee/nvy136.
Development of vibrational control methods for grapevine pests in California - (Proceedings)
Krugner, R. 2018. Development of vibrational control methods for grapevine pests in California. Proceedings of the International Symposium on Proactive Technologies for Enhancement of Integrated Pest Management on Key Crops. p. 49-56.
Mating disruption by vibrational signals – applications for management of the glassy-winged sharpshooter ()
Gordon S.D., Krugner R. 2020. Mating Disruption by Vibrational Signals: Applications for Management of the Glassy-Winged Sharpshooter. In: Hill P., Lakes-Harlan R., Mazzoni V., Narins P., Virant-Doberlet M., Wessel A. (eds) Biotremology: Studying Vibrational Behavior. Animal Signals and Communication, vol 6. Springer, Cham. P. 355-373.
Vibrational mating disruption of the glassy-winged sharpshooter, Homalodisca vitripennis, vector of Xylella fastidiosa in California - (Abstract Only)
Mazzoni, V., Nieri, R., Gordon, S.D., Krugner, R. 2018. Vibrational mating disruption of the glassy-winged sharpshooter, Homalodisca vitripennis, vector of Xylella fastidiosa in California. IOBC/WPRS Bulletin (Abstract for Conference Proceedings). 139:28-30.
Mating disruption of Homalodisca vitripennis (Germar) (Hemiptera: Cicadellidae) by playback of vibrational signals in vineyard trellis Reprint Icon - (Peer Reviewed Journal)
Krugner, R., Gordon, S.D. 2018. Mating disruption of Homalodisca vitripennis (Germar) (Hemiptera: Cicadellidae) by playback of vibrational signals in vineyard trellis. Pest Management Science. 1-7. https://doi.org/10.1002/ps.4930.
Mating vibrational signal transmission through and between plants of an agricultural pest, the Glassy-Winged Sharpshooter - (Abstract Only)
Playback of natural vibrational signals in vineyard trellis for mating disruption of glassy-winged sharpshooter - (Abstract Only)
Krugner, R., Gordon, S.D., Niere, R., Mazzoni, V. 2017. Playback of natural vibrational signals in vineyard trellis for mating disruption of glassy-winged sharpshooter. CDFA Pierce's Disease Control Program Research Symposium. p. 172.
Assessing effects of seasonality on the epidemiology of Pierce’s disease in the southern San Joaquin Valley - (Abstract Only)
Sisterson, M.S., Burbank, L.P., Krugner, R., Stenger, D.C. 2017. Assessing effects of seasonality on the epidemiology of Pierce’s disease in the southern San Joaquin Valley. CDFA Pierce's Disease Control Program Research Symposium. p. 149.
Effects of energy reserves and diet on glassy-winged sharpshooter egg maturation - (Peer Reviewed Journal)
Sisterson, M.S., Krugner, R., Wallis, C.M., Stenger, D.C. 2018. Effects of energy reserves and diet on glassy-winged sharpshooter egg maturation. Journal of Economic Entomology. 111:159-169.
Detection and typing of Xylella fastidiosa from glassy-winged sharpshooter for Pierce’s disease epidemiology - (Abstract Only)
Burbank, L.P., Sisterson, M.S., Krugner, R., Stenger, D.C. 2017. Detection and typing of Xylella fastidiosa from glassy-winged sharpshooter for Pierce’s disease epidemiology. Presented at Australian and New Zealand Entomological Societies Conference, Sept 17-20, 2017, Terrigal, Australia
Design of a candidate vibrational signal for mating disruption against the glassy-winged sharpshooter, Homalodisca Vitripennis - (Peer Reviewed Journal)
Mazzoni, V., Gordon, S.D., Nieri, R., Krugner, R. 2017. Design of a candidate vibrational signal for mating disruption against the glassy-winged sharpshooter, Homalodisca Vitripennis. Pest Management Science. doi: 10.1002/ps.4618.
Mating interference of glassy-winged sharpshooters, Homalodisca vitripennis - (Peer Reviewed Journal)
Gordon, S.D., Sandoval, N., Mazzoni, V., Krugner, R. 2017. Mating interference of glassy-winged sharpshooters, Homalodisca vitripennis. Entomologia Experimentalis et Applicata. doi: 10.1111.eea.12594.
Mating behavior and vibrational mimicry in the glassy-winged sharpshooter, Homalodisca vitripennis - (Peer Reviewed Journal)
Nieri, R., Mazzoni, V., Gordon, S.D., Krugner, R. 2017. Mating behavior and vibrational mimicry in the glassy-winged sharpshooter, Homalodisca vitripennis. Journal of Pest Science. 90(3):887-899.
Grapevines respond to glassy-winged sharpshooter (Homalodisca vitripennis) oviposition by increasing local and systemic terpenoid levels - (Abstract Only)
Wallis, C.M., Krugner, R. 2016. Grapevines respond to glassy-winged sharpshooter (Homalodisca vitripennis) oviposition by increasing local and systemic terpenoid levels. Meeting Abstract. p. 238.
Sequence polymorphism in an insect RNA virus field population: A snapshot from a single point in space and time reveals stochastic differences among and within individual hosts - (Peer Reviewed Journal)
Stenger, D.C., Krugner, R., Nouri, S., Ferriol, I., Falk, B.W., Sisterson, M.S. 2016. Sequence polymorphism in an insect RNA virus field population: a snapshot from a single point in space and time reveals stochastic differences among and within individual hosts. Virology. 498:209-217.
Substrate-borne vibrational signals in intraspecific communication of GWSS - (Proceedings)
Krugner, R., Nieri, R., Gordon, S.D., Mazzoni, V. 2016. Substrate-borne vibrational signals in intraspecific communication of GWSS. CDFA Pierce's Disease Control Program Research Symposium. p. 212-220.
Seasonal fluctuations of sap-feeding insect species infected by Xylella fastidiosa in apulian olive groves of southern Italy - (Peer Reviewed Journal)
Ben Moussa, I., Mazzoni, V., Valentini, F., Yaseen, T., Lorusso, D., Speranza, S., Digiaro, M., Varvaro, L., Krugner, R., D'Onghia, A. 2016. Seasonal fluctuations of sap-feeding insect species infected by Xylella fastidiosa in apulian olive groves of southern Italy. Journal of Economic Entomology. 109(4):1512-1518.
Transmission ecology and epidemiology of the citrus variegated chlorosis strain of Xylella fastidiosa ()
Lopes, J.S., Krugner, R. 2016. Transmission ecology and epidemiology of the citrus variegated chlorosis strain of Xylella fastidiosa. In: Brown, J.K., editor. Vector-Mediated Transmission of Plant Pathogens. St. Paul, MN: American Phytopathological Society Press. p. 195-208.
Playback interference of glassy-winged sharp shooter communication - (Abstract Only)
Gordon, S.D., Mazzoni, V., Nieri, R., Krugner, R. 2016. Playback interference of glassy-winged sharp shooter communication. Meeting Abstract. Available: http://eventi.fmach.it/biotremology2016.
Rootstock effects on almond leaf scorch disease incidence and severity - (Peer Reviewed Journal)
Krugner, R., Ledbetter, C.A. 2016. Rootstock effects on almond leaf scorch disease incidence and severity. Plant Disease. 100(8):1617-1621. doi: 10.1094/PDIS-01-16-0125-RE.
Egg maturation by the glassy-winged sharpshooter (Hemiptera: Cicadellidae); a vector of Xylella fastidiosa - (Abstract Only)
Sisterson, M.S., Wallis, C.M., Krugner, R., Stenger, D.C. 2016. Egg maturation by the glassy-winged sharpshooter (Hemiptera: Cicadellidae); a vector of Xylella fastidiosa. International Congress of Entomology. Available: https://esa.confex.com/esa/ice2016/meetingapp.cgi/Paper/111154.
Substrate-borne vibrational signals in intraspecific communication of glassy-winged sharpshooters (GWSS) - (Proceedings)
Krugner, R., Nieri, R., Gordon, S.D., Mazzoni, V. 2015. Substrate-borne vibrational signals in intraspecific communication of glassy-winged sharpshooters (GWSS). In: Research Progress Reports, Pierce's Disease and Other Designatred Pests and Diseases of Wine Grapes, California Department of Food and Agriculture, December, 2015, Sacramento, California. p. 104-109.
Glassy-winged sharpshooter oviposition effects on foliar grapevine and red-tipped photinia terpenoid levels - (Abstract Only)
Pedraza, J.J., Wallis, C.M., Krugner, R. 2015. Glassy-winged sharpshooter oviposition effects on foliar grapevine and red-tipped photinia terpenoid levels. Entomological Society of America Annual Meeting. p. 139.
Effect of plant barriers and citrus leaf age on dispersal of Diaphorina citri Kuwayama (Hemiptera: Liviidae) - (Peer Reviewed Journal)
Tomaseto, A.F., Krugner, R., Lopes, J.R. 2015. Effect of plant barriers and citrus leaf age on dispersal of Diaphorina citri Kuwayama (Hemiptera: Liviidae). Journal of Applied Entomology. Available online: doi:10.1111/jen.12249
Olive quick decline in Italy is associated with unique strain of Xylella fastidiosa ()
Fichtner, E., Lightle, D., Krugner, R. 2015. Olive quick decline in Italy is associated with unique strain of Xylella fastidiosa. Subtropics newsletter. 13(1):2-3.
Glassy-winged sharpshooter oviposition effects on photinia volatile chemistry with implications on egg parasitoid effectiveness - (Abstract Only)
Wallis, C.M., Krugner, R. 2014. Glassy-winged sharpshooter oviposition effects on photinia volatile chemistry with implications on egg parasitoid effectiveness. CDFA Pierce's Disease Research Progress Reports. p. 256.
Olive “quick decline” in Italy is associated with Xylella fastidiosa, a plant pathogenic bacterium also associated with California olives ()
Fichtner, E., Lightle, D., Krugner, R. 2014. Olive “quick decline” in Italy is associated with Xylella fastidiosa, a plant pathogenic bacterium also associated with California olives. CAPCA Adviser Magazine. p.44-45.
Infectivity and transmission of Xylella fastidiosa Salento strain by Philaenus spumarius L. (Hemiptera: Aphrophoridae) in Apulia, Italy - (Peer Reviewed Journal)
Saponari, M., Loconsole, G., Cornara, D., Yokomi, R.K., De Stradis, A., Boscia, D., Bosco, D., Martelli, G., Krugner, R., Porcelli, F. 2014. Infectivity and transmission of Xylella fastidiosa Salento strain by Philaenus spumarius L. (Hemiptera: Aphrophoridae) in Apulia, Italy. Journal of Economic Entomology. 107(4):1316-1319.
Attraction of the egg parasitoid, Gonatocerus ashmeadi Girault (Hymenoptera: Mymaridae) to synthetic formulation of a (E)-ß-ocimene and (E,E)-a-farnesene mixture - (Peer Reviewed Journal)
Krugner, R., Wallis, C.M., Walse, S.S. 2014. Attraction of the egg parasitoid, Gonatocerus ashmeadi Girault (Hymenoptera: Mymaridae) to synthetic formulation of a (E)-ß-ocimene and (E,E)-a-farnesene mixture. Biological Control. 77:23-28.
Young citrus leaves decrease dispersal distance of Diaphorina citri Kuwayama (Hemiptera: Liviidae) - (Abstract Only)
Tomaseto, A.F., Krugner, R., Lopes, J.R. 2014. Young citrus leaves decrease dispersal distance of Diaphorina citri Kuwayama (Hemiptera: Liviidae). Meeting Abstract. p.36.
Evaluation of olive as a host of Xylella fastidiosa and associated sharpshooter vectors - (Peer Reviewed Journal)
Krugner, R., Sisterson, M.S., Chen, J., Stenger, D.C., Johnson, M.W. 2014. Evaluation of olive as a host of Xylella fastidiosa and associated sharpshooter vectors. Plant Disease. 98:1186-1193.
Suitability of non-fertilized eggs of Homalodisca vitripennis for the egg parasitoid Gonatocerus morrili - (Peer Reviewed Journal)
Krugner, R. 2014. Suitability of non-fertilized eggs of Homalodisca vitripennis for the egg parasitoid Gonatocerus morrili. Biocontrol. 59:167-174.
Plant water stress effects on stylet probing behaviors of Homalodisca vitripennis (Hemiptera: Cicadellidae) associated with acquisition and inoculation of the bacterium Xylella fastidiosa - (Peer Reviewed Journal)
Krugner, R., Backus, E.A. 2014. Plant water stress effects on stylet probing behaviors of Homalodisca vitripennis (Hemiptera: Cicadellidae) associated with acquisition and inoculation of the bacterium Xylella fastidiosa. Journal of Economic Entomology. 107(1):66-74.
Suitability of fertilized and non-fertilized eggs of Homalodisca vitripennis for the egg parasitoid Gonatocerus morrili - (Abstract Only)
Krugner, R. 2013. Suitability of fertilized and non-fertilized eggs of Homalodisca vitripennis for the egg parasitoid Gonatocerus morrili. CDFA Pierce's Disease Control Program Research Symposium. p.11.
Habitat Effects on Population Density and Movement of Insect Vectors of Xylella fastidiosa in California, USA - (Proceedings)
Krugner, R. 2013. Habitat Effects on Population Density and Movement of Insect Vectors of Xylella fastidiosa in California, USA. Symposium on Insect Vectors and Insect-Borne Diseases. 173: 83-106.
Effects of plant water stress on vector feeding behaviors that control acquisition and inoculation of Xylella fastidiosa - (Proceedings)
Backus, E.A., Krugner, R. 2013. Effects of plant water stress on vector feeding behaviors that control acquisition and inoculation of Xylella fastidiosa. p. 1.In: 2012 Pierce's Disease Research Progress Reports, California Department of Food and Agriculture, 262 pp.
Evaluation of grapevine as a host for the glassy-winged sharpshooter - (Abstract Only)
Sisterson, M.S., Krugner, R., Wallis, C.M. 2012. Evaluation of grapevine as a host for the glassy-winged sharpshooter. In: Pierce's Disease Research Progress Reports, California Department of Food and Agriculture. pp 12.
Postharvest Fumigation Research at ARS - (Proceedings)
Walse, S.S., Hall Iv, W.A., Bellamy, D.E., Krugner, R., Tebbets, J.S. 2012. Postharvest Fumigation Research at ARS. International Conference on Methyl Bromide Alternatives and Emissions Reductions, November 6-8, 2012, San Diego, California. p. 51:1-2.
Gut content examination of the citrus predator assemblage for the presence of Homalodisca vitripennis remains Reprint Icon - (Peer Reviewed Journal)
Hagler, J.R., Blackmer, F., Krugner, R., Groves, R.L., Morse, J.G., Johnson, M.W. 2013. Gut content examination of the citrus predator assemblage for the presence of Homalodisca vitripennis remains. Biocontrol. 58:341-349.
Plant water stress effects on the net dispersal rate of the insect vector Homalodisca vitripennis (Germar) (Hemiptera: Cicadellidae) and movement of its egg parasitoid, Gonatocerus ashmeadi Girault (Hymenoptera: Mymaridae) - (Peer Reviewed Journal)
Krugner, R., Hagler, J.R., Groves, R.L., Sisterson, M.S., Morse, J.G., Johnson, M.W. 2012. Plant water stress effects on the net dispersal rate of the insect vector Homalodisca vitripennis (Germar) (Hemiptera: Cicadellidae) and movement of its egg parasitoid, Gonatocerus ashmeadi Girault (Hymenoptera: Mymaridae). Environmental Entomology. 41(6):1279-1289.
Recapture rate of diaphorina citri kuwayama (hemiptera: psyllidae) marked with fluorescent dust in dispersal studies - (Abstract Only)
Tomaseto, A.F., Krugner, R., Lopes, J.R. 2012. Recapture rate of diaphorina citri kuwayama (hemiptera: psyllidae) marked with fluorescent dust in dispersal studies. Brazilian National Congress of Entomology. Available:www.seb.org.br/cbe2012/trabalhos/1875/1875_1.pdf
Effects of plant water stress on vector feeding behaviors that control acquisition and inoculation of Xylella fastidiosa - (Abstract Only)
Backus, E.A., Krugner, R. 2012. Effects of plant water stress on vector feeding behaviors that control acquisition and inoculation of Xylella fastidiosa. Phytopathology. 102(S4):8.
Postharvest treatment of strawberries with methyl bromide to control spotted wing drosophila, Drosophila suzukii - (Peer Reviewed Journal)
Walse, S.S., Krugner, R., Tebbets, J.S. 2012. Postharvest treatment of strawberries with methyl bromide to control spotted wing drosophila, Drosophila suzukii. Journal of Asia-Pacific Entomology. 15:451-456.
Phenology of Xylella fastidiosa and its vector around California almond nurseries: An assessment of plant vulnerability to almond leaf scorch disease - (Peer Reviewed Journal)
Krugner, R., Ledbetter, C.A., Chen, J., Shrestha, A. 2012. Phenology of Xylella fastidiosa and its vector around California almond nurseries: An assessment of plant vulnerability to almond leaf scorch disease. Plant Disease. 96(10):1488-1494.
Phenology of Xylella fastidiosa and its Vector, Draeculacephala minerva, in vegetation surrounding California Almond Nurseries - (Abstract Only)
Krugner, R., Ledbetter, C.A., Chen, J., Shrestha, A. 2012. Phenology of Xylella fastidiosa and its Vector, Draeculacephala minerva, in vegetation surrounding California Almond Nurseries. Entomological Society of America Proceedings, Pacific Branch Meting, March 25-28, 2012, Portland, Oregon. p. 21.
Effects of Insect Origin, Gender, and Age on Transmission of Xylella fastidiosa to Grapevines by Homalodisca vitripennis (Hemiptera: Cicadellidae) - (Peer Reviewed Journal)
Krugner, R., Sisterson, M.S., Lin, H. 2012. Effects of Insect Origin, Gender, and Age on Transmission of Xylella fastidiosa to Grapevines by Homalodisca vitripennis (Hemiptera: Cicadellidae). Annals of the Entomological Society of America. 105(2):280-286.
Phenology of Xylella fastidiosa and Draeculocephala minerva in California almond nurseries: an assessment of plant vulnerability to almond leaf scorch disease - (Abstract Only)
Krugner, R. 2011. Phenology of Xylella fastidiosa and Draeculocephala minerva in California almond nurseries: an assessment of plant vulnerability to almond leaf scorch disease. CDFA Pierce's Disease Control Program Research Symposium, Dec 15-18, 2011, Sacramento, California. p.29.
Effects of plant water stress and temperature on glassy-winged sharpshooter feeding in relation to transmission of Xylella fastidiosa - (Abstract Only)
Backus, E.A., Krugner, R., Son, Y., Johnson, M. 2011. Effects of plant water stress and temperature on glassy-winged sharpshooter feeding in relation to transmission of Xylella fastidiosa. CDFA Pierce's Disease Control Program Research Symposium. p. 19.
Grape hosts infested with glassy-winged sharpshooters produce volatile compounds which may attract egg parasitoids - (Abstract Only)
Wallis, C.M., Krugner, R., Walse, S.S. 2011. Grape hosts infested with glassy-winged sharpshooters produce volatile compounds which may attract egg parasitoids. Phytopathology 101:S184.
Honeydew and insecticide-bait as competing food resources for a fruit fly and common parasitoids - (Peer Reviewed Journal)
Wang, X., Johnson, M.W., Opp, S.B., Krugner, R., Daane, K.M. 2011. Honeydew and insecticide-bait as competing food resources for a fruit fly and common parasitoids. Entomologia Experimentalis et Applicata. p.128-137.
VECTOR ABILITY AND REPRODUCTIVE CHARACTERISTICS OF HOMALODISCA VITRIPENNIS (GERMAR) (HEMIPTERA: CICADELLIDAE) FROM GEOGRAPHICALLY SEPARATED POPULATIONS IN CALIFORNIA - (Abstract Only)
Krugner, R., Sisterson, M.S., Lin, H. 2011. VECTOR ABILITY AND REPRODUCTIVE CHARACTERISTICS OF HOMALODISCA VITRIPENNIS (GERMAR) (HEMIPTERA: CICADELLIDAE) FROM GEOGRAPHICALLY SEPARATED POPULATIONS IN CALIFORNIA. Entomological Society of America Annual Meeting. p.25.
Glassy-winged sharpshooter infestations induce grape hosts to produce volatile compounds which may attract egg parasitoids - (Proceedings)
Wallis, C.M., Krugner, R., Walse, S.S. 2010. Glassy-winged sharpshooter infestations induce grape hosts to produce volatile compounds which may attract egg parasitoids. CDFA Pierce's Disease Control Program Research Symposium, Dec 15-17, 2010, San Diego, California. p.51.
EXPERIMENTAL ANALYSIS OF BIOLOGICAL PARAMETERS AND VECTOR ABILITY OF GLASSY-WINGED SHARPSHOOTERS FROM ALLOPATRIC POPULATIONS IN CALIFORNIA - (Abstract Only)
Krugner, R., Sisterson, M.S., Lin, H. 2010. EXPERIMENTAL ANALYSIS OF BIOLOGICAL PARAMETERS AND VECTOR ABILITY OF GLASSY-WINGED SHARPSHOOTERS FROM ALLOPATRIC POPULATIONS IN CALIFORNIA. [abstract]CDFA Pierce's Disease Control Program Research Symposium, Dec 15-17, 2010, San Diego, CA. p. 21.
Differential reproductive maturity between allopatric populations of Homalodisca vitripennis (Hemiptera: Cicadellidae) in California - (Peer Reviewed Journal)
Krugner, R. 2010. Differential reproductive maturity between allopatric populations of Homalodisca vitripennis (Hemiptera: Cicadellidae) in California. Crop Protection. 29:1521-1528.
Estimation of feeding threshold for Homalodisca vitripennis (Hemiptera: Cicadellidae) and its application to prediction of overwintering mortality - (Peer Reviewed Journal)
Son, Y., Groves, R.L., Daane, K.M., Morgan, D.J., Krugner, R., Johnson, M.W. 2010. Estimation of feeding threshold for Homalodisca vitripennis (Hemiptera: Cicadellidae) and its application to prediction of overwintering mortality. Environmental Entomology. 39(4):1264-1275.
Evaluation of pathogenicity and insect transmission of Xylella fastidiosa strains to olive plants - (Abstract Only)
Krugner, R. 2010. Evaluation of pathogenicity and insect transmission of Xylella fastidiosa strains to olive plants [abstract]. California Olive Committee Annual Research Report. P. 48-56.
Glassy-winged sharpshooters (GWSS) are not GWSS: Differential Reproductive Maturity between Allopatric Californian Populations - (Abstract Only)
Krugner, R. 2009. Glassy-winged sharpshooters (GWSS) are not GWSS: Differential Reproductive Maturity between Allopatric Californian Populations. [abstract]. California Department of Food and Agriculture, Pierce's Disease Control Program Research Symposium, December 9-11, 2009, Sacramento, CA.
Movement of Glassy-Winged Sharpshooters in a Deficit Irrigated Citrus Orchard - (Proceedings)
Krugner, R. 2010. Movement of Glassy-Winged Sharpshooters in a Deficit Irrigated Citrus Orchard. In: American Society of Agronomy, California Chapter, California Plant and Soil Confeence, February 2-3, 2010, Tulare, California. p.32.
Production of Anagrus epos Girault (Hymenoptera: Mymaridae) on Homalodisca vitripennis (Germar) (Hemiptera: Cicadellidae) eggs - (Peer Reviewed Journal)
Krugner, R., Johnson, M.W., Morgan, D.J., Morse, J.G. 2009. Production of Anagrus epos Girault (Hymenoptera: Mymaridae) on Homalodisca vitripennis (Germar) (Hemiptera: Cicadellidae) eggs. Biological Control. 51(1):122-129.
Quantification of Movement and Spatiotemporal Distribution of Homalodisca vitripennis (Germar) (Hemiptera: Cicadellidae) in a Citrus Orchard Using a Protein Marking Technique - (Abstract Only)
Krugner, R., Johnson, M.W., Hagler, J.R., Groves, R., Morse, J.G. 2009. Quantification of Movement and Spatiotemporal Distribution of Homalodisca vitripennis (Germar) (Hemiptera: Cicadellidae) in a Citrus Orchard Using a Protein Marking Technique. Entomological Society of America Annual Meeting. Available: http://esa.confex.com/esa/2009/webprogram/Paper39813.html.
Diverse niche opportunities for glassy-winged sharpshooter, Homalodisca vitripennis (Germar) (Hemiptera: Cicadellidae), in California and the role of research for crop protection - (Abstract Only)
Krugner, R. 2009. Diverse niche opportunities for glassy-winged sharpshooter, Homalodisca vitripennis (Germar) (Hemiptera: Cicadellidae), in California and the role of research for crop protection. Entomological Society of America Annual Meeting. Available: http://esa.confex.com/esa/2009/webprogram/Paper40421.html
The Glassy-Winged Sharpshooter Vector of Xylella fastidiosa Harbors a Phytoreovirus - (Abstract Only)
Stenger, D.C., Sisterson, M.S., Krugner, R., Backus, E.A., Hunter, W.B. 2009. The Glassy-Winged Sharpshooter Vector of Xylella fastidiosa Harbors a Phytoreovirus. American Phytopathological Society Annual Meeting, Portland, OR. (07/09). Phytopathology 99: S124.
Genomic Characterization of a Phytoreovirus species infecting the glassy-winged sharpshooter - (Abstract Only)
Stenger, D.C., Sisterson, M.S., Krugner, R., Backus, E.A., Hunter, W.B. 2009. Genomic Characterization of a Phytoreovirus species infecting the glassy-winged sharpshooter[abstract]. American Society for Virology Meeting. p.342.
Seasonal Population Dynamics of Homalodisca vitripennis (Germar) (Hemiptera: Cicadellidae) in Sweet Orange Trees Maintained under Continuous Deficit Irrigation - (Peer Reviewed Journal)
Krugner, R., Groves,, R.L., Johnson,, M.W., Flores,, A.P., Hagler, J.R., Morse,, J.G. 2009. Seasonal Population Dynamics of Homalodisca vitripennis (Germar) (Hemiptera: Cicadellidae) in Sweet Orange Trees Maintained under Continuous Deficit Irrigation. Journal of Economic Entomology. 102(3):960-973.
A New Phytoreovirus Infecting the Glassy-Winged Sharpshooter (Homalodisca vitripennis) - (Peer Reviewed Journal)
Stenger, D.C., Sisterson, M.S., Krugner, R., Backus, E.A., Hunter, W.B. 2009. A New Phytoreovirus Infecting the Glassy-Winged Sharpshooter (Homalodisca vitripennis). Virology. 386:469-477.
Spatiotemporal Distribution and Movement of Glassy-Winged Sharpshooters in a Citrus Orchard - (Abstract Only)
Krugner, R., Johnson, M.W., Hagler, J.R., Groves, R., Morse, J. 2009. Spatiotemporal Distribution and Movement of Glassy-Winged Sharpshooters in a Citrus Orchard. National IPM Symposium, Portland, Oregon, March 24-26, 2009.
Characterization of a new Phytoreovirus species infecting the glassy-winged sharpshooter - (Abstract Only)
Stenger, D.C., Sisterson, M.S., Krugner, R., Backus, E.A., Hunter, W.B. 2008. Characterization of a new Phytoreovirus species infecting the glassy-winged sharpshooter [abstract]. CDFA Pierce's Disease Control Program Research Symposium, December 15-17, 2008, San Diego, California; Poster abstracts not published in Proceedings.
Population dynamics of insect vectors of Xylella fastidiosa in almond nurseries in the San Joaquin Valley of California: An assessment of plant vulnerability to almond leaf scorch disease. - (Abstract Only)
Krugner, R. 2008. Population dynamics of insect vectors of Xylella fastidiosa in almond nurseries in the San Joaquin Valley of California: An assessment of plant vulnerability to almond leaf scorch disease.. Entomological Society of America Annual Meeting, Reno, Nevada, November 16-19, 2008.
Olfactory responses of the egg parasitoid, Gonatocerus ashmeadi Girault (Hymenoptera: Mymaridae), to host plants infested by Homalodisca vitripennis (Germar) (Hemiptera: Cicadellidae) - (Peer Reviewed Journal)
Krugner, R., Johnson, M.W., Daane, K.M., Morse, J.G. 2008. Olfactory responses of the egg parasitoid, Gonatocerus ashmeadi Girault (Hymenoptera: Mymaridae), to host plants infested by Homalodisca vitripennis (Germar) (Hemiptera: Cicadellidae). Biological Control. 47:8-15.
Dispersal and Movement of the Glassy-winged Sharpshooter and Associated Natural Enemies in a Continuous, Deficit-irrigated Agricultural Landscape - (Proceedings)
Krugner, R., Nadel, H., Johnson,, M.W., Hagler, J.R., Morgan,, D., Stenger, D.C., Groves, R. 2007. Dispersal and Movement of the Glassy-winged Sharpshooter and Associated Natural Enemies in a Continuous, Deficit-irrigated Agricultural Landscape. In: Proceedings of CDFA Pierce's Disease Control Program Research Symposium, December 12-14, 2007, San Diego, California. p. 38-41
The Anagrus epos Complex: a Likely Source of Effective Classical Biological Agents for Glassy-Winged Sharpshooter Control - (Proceedings)
Morse,, J.G., Stouthamer,, R., Triapitsyn,, S.V., Morgan,, D.J., Lytle,, J.M., Krugner, R., Rugman-Jones,, P. 2007. The Anagrus epos Complex: a Likely Source of Effective Classical Biological Agents for Glassy-Winged Sharpshooter Control. In: CDFA Pierce's Disease Control Program Research Symposium, San Diego, CA, Dec 12-14, 2007. p. 94-97.