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John D. Stark

Professor, Ecotoxicology Program

Director, Washington Stormwater Center


John Stark is a Professor of Entomology and he runs the Ecotoxicology Program at WSU Puyallup. John is also the Director of the Washington Stormwater Center and a member of the Washington State Academy of Sciences. His research deals with protection of endangered species and ecological risk assessment of pollutants with particular emphasis on salmon and their food. John is also a population modeler and has developed population-level risk assessments based on matrix models and differential equation models. Recent projects involve determination of the effects of stormwater low impact development on salmon and invertebrate health and assessing the impact of pesticides on endangered butterfly species. John has published over 140 peer-reviewed papers in scientific journals, numerous book chapters, and a book on ecological risk assessment entitled “Demographic Toxicity: Methods in Ecological Risk Assessment”.


Areas of Interest

  • Development of hazard/risk assessment for aquatic organisms inhabiting rivers and streams in the Pacific Northwest, including salmon and the invertebrates that they feed on as well as biological control organisms inhabiting agricultural ecosystems.
  • Effects of pesticides on endangered butterfly species
  • Ecotoxicology of pesticides and other toxicants in aquatic and agricultural ecosystems
  • Demographic toxicology and modeling impacts on populations.
  • Tephritid fruit fly population ecology and control



  • B.S. Forest Biology, 1978, Syracuse University
  • B.S. Biology, 1978, S.U.N.Y. Environmental Science and Forestry School, Syracuse, New York
  • M.S. Entomology, 1981, Louisiana State University
  • Ph.D. Entomology/Pesticide Toxicology, 1987, University of Hawaii



  1. Director, Washington Stormwater Center. January 2010-present
  2. Member, Billy Frank Jr. Salmon Coalition 2018-present
  3. Member, Washington State Academy of Sciences, Inducted September 2019
  4. Member, National Academy of Sciences, Multi-Sector General Permit for Industrial Stormwater Discharges Industrial Stormwater panel, 2017-2019.
  5. Member of the Center for Disease Control, Vector-borne Disease Workgroup, 2017-2019.
  6. Member, Governor Inslee’s Southern Resident Killer Whale Toxics in Fish Subgroup
  7. Member of the Global Science Committee for SETAC, 2011-2016
  8. Board Member, Water Partners of the Tacoma, Pierce County 2012-present
  9. Member, Washington Toxics Reduction Strategy Group 2012-2013
  10. Toxicologist in Public Service, Pesticide Advisory Board for the Washington State Department of Agriculture. 2009-present.
  11. Member of Governor Inslee’s Creative Solutions Workgroup (Fish Consumption rate) 2013-2014.
  12. President, Pacific Northwest Chapter, Society of Environmental Toxicology and Chemistry 2014.
  13. Board Member of the Northwest Green Chemistry Center, October 2013-2015
  14. Member of the Puget Sound Partnership Science Panel 2008-2018
  15. Member of the WSU CAHNRS National Board of Advisors
  16. Member of the WSU MS in Agriculture Steering Committee
  17. Member of the WSU Tenure and Promotion Revision Task Force
  18. Member of the WSU Extension Natural Resources Leadership Team
  19. Member of the WSU Agriculture Program Leadership Team
  20. Member Russell Family Foundation Watershed Advisory Group
  21. Member of the WSU STEM Education Committee
  22. President, Entomological Society of America, Pacific Branch 2005-2006
  23. Invited Expert. Society of Toxicology Workshop. Probabilistic Risk Assessment: bridging components along the exposure-dose-response continuum. July 25-27, 2005. Washington, D.C.
  24. EPA Food Quality Protection Act (FQPA) Science Review Board. 2009-present.
  25. Governing Board Member, Entomological Society of America 2002-2004.
  26. Member of the Washington State Pesticide Task Force 2000-2003. Appointed by Washington State Governor Locke.
  27. Assistant Director of the State of Washington Water Research Center. July 2001-2003.
  28. 29. Member of the Washington State Regulatory Work Group (RWG) Committee on Freshwater Sediment Toxicity Assessment 1998-2000.


Awards and Honors

  1. Washington State Academy of Sciences member. Inducted September 2019.
  2. Presentation to Congressional Caucus, Sustainable Energy and Environment Committee on stormwater-pollution issues, March 2nd 2016. Capital Building, Washington, D.C.
  3. Briefed Congress on stormwater-pollution issues. March 9th 2014. Capital Building, Washington, D.C.
  4. Held Workshop at U.S. EPA Office of Pesticide Programs on ecological modeling in risk assessment. March 18th, 2014.
  5. Paper of the year in Ecological Risk Assessment – Human and Ecological Risk Assessment journal. March 2012.
  6. Recognition Award in Insect Physiology, Biochemistry and Toxicology. Entomological Society of America. Pacific Branch. 2011.
  7. WSU Innovators Lecturer. October 14th, 2010, Seattle, Washington. Title of talk “Pesticides, pollution and policy: New strategies for saving Pacific Northwest salmon”.
  8. Excellence in Research Award, 2010. Washington State University, College of Agriculture, Human and Natural Resource Sciences.
  9. Visiting Scientist, “Mechanistic Effects Models for Ecological Risk Assessment of Chemicals Project”, European Union (2010-2016).
  10. C.W. Woodworth Award 2005. The C.W. Woodworth Award is the highest honor that the Pacific Branch of the Entomological Society of America can bestow.
  11. Recognition Award in Insect Physiology, Biochemistry and Toxicology, 2001. Entomological Society of America, Pacific Branch.
  12. Phi Kappa Phi (Honor Society)
  13. Sigma Xi (Honor Society)
  14. Gamma Sigma Delta (Honor Society)



Text Book

Akçakaya, H.R., Stark, J.D., & Bridges, T.S. (2008). Demographic Toxicity: Methods in Ecological Risk Assessment.  Oxford University Press, Oxford, UK. 277 pp.

Peer reviewed papers (H Index 2021 = 55)

  1. Stark JD, Banks JE. A tale of two metrics: the EPA Risk Quotient Approach versus the delay in Population Growth Index for determination of pesticide risk to aquatic species. Ecotoxicology. 2021 Aug 11. doi: 10.1007/s10646-021-02462-x. Epub ahead of print. PMID: 34382175.
  2. Mitchell CJ, Chu VR, Harris MJ, Markiewicz AJ, Landis WG, von Stackelberg KE, Stark JD. 2021. Integrating metapopulation dynamics into a Bayesian Network Relative Risk Model: Assessing risk of pesticides to Chinook salmon (Oncorhynchus tshawytscha) in an ecological context. Integrated Environmental Assessment and Management 17: 95–109.
  3. McIntyre JK, Prat J, Cameron J, Wetzel J, Mudrock E, Peter KT, Tian Z, Mackenzie C, Lundin J, Stark JD, Davis J, Kolodziej EP, Scholz NL. 2021. Treading water: Leachate from tire wear particles recreates acute toxicity from roadway runoff in coho but not chum salmon. Environmental Science and Technology 55: 11767-11774.
  4. Stark JD, McIntyre JK, Banks JE. 2020. Population viability in a host-parasitoid system is mediated by interactions between population structure and life stage differential susceptibility to toxicants. Scientific Reports (2020) 10:20746 (
  5. Banks HT, Banks JE, Catenacci J, Joyner M, Stark JD. 2020. Correctly modeling plant-insect-herbivore-pesticide interactions as aggregate data. Mathematical Biosciences and Engineering, 17:1743-1756.
  6. Stark JD and Banks JE. 2019. Comparative toxicity of the semi-natural insecticide Spinetoram (Delegate™) to three Cladoceran species. Biopesticides International 15:1-4.
  7. Raguraman S, Stark JD. 2019. Mixtures of the natural Insecticides, Azatin and Spinosad, result in antagonist toxicity in Daphnia magna populations after chronic exposure. Biopesticides International 15:57-64.
  8. Landis WG, Chu VR, Graham DE, Harris ME, Stark JD, Mitchell CJ, von Stackelberg KE. 2019. The integration of chlorpyrifos acetylcholinesterase inhibition, water temperature and dissolved oxygen concentration into a regional scale multiple stressor risk assessment estimating risk to Chinook salmon in four rivers in Washington State, USA. Integr. Environ. Assess. Manag. 16:28-42.
  9. McIntyre JK, Winters N, Rozmyn L, Haskins T, Stark JD. 2019. Metals leaching from common residential and commercial roofing materials across four years of weathering and implications for environmental loading. Environmental Pollution 255:113262.
  10. Jayakaran AD, Knappenberger T, Stark JD, Hinman C. 2019. Remediation of Stormwater Pollutants by Porous Asphalt Pavement. Water 11:520;
  11. Banks J, Ackleh A, Veprauskas A, Stark JD. 2019. The trouble with surrogates in risk assessment: a daphniid case study. Ecotoxicology 28:62–68.
  12. Veprauskas A, Ackleh AS, Banks JE, Stark JD. 2018. The evolution of toxicant resistance in Daphniids and its role on surrogate species. Theoretical Population Biology 119:15-25
  13. Chen X, Johnson DL, Stark JD, Kawchuk L, Jaronski S. 2018. Toxicity of biopesticide candidate, Metarhizium anisopliae var anisopliae S54, neonicotinoid, imidacloprid, neem extract (azatin), and agricultural adjuvant R-11 on the crustacean Ceriodaphnia dubia Biopesticides International 14: 71-77.
  14. Young A, Kochenkov V, McIntyre JK, Stark JD, Coffin, A.B. 2018. Urban stormwater runoff negatively impacts lateral line development in larval zebrafish and salmon embryos. Scientific Reports 8:2830 | DOI:10.1038/s41598-018-21209-z.
  15. Lane JM, Kumar S, Yee WL, Stark JD. 2018. Modeling the climatic suitability for Fopius arisanus (Hymenoptera: Braconidae) and its host fly Bactrocera dorsalis (Diptera: Tephritidae). Entomologists Gazette 154: 65–78.
  16. Banks J, Vargas R, Ackleh A, Stark JD. 2017. Sublethal effects in pest management: a surrogate species perspective on fruit fly control. Insects 8, 78; doi:10.3390/insects8030078.
  17. Knappenberger T, Jayakaran AD, Stark JD, Hinman, C. 2017. Monitoring Porous Asphalt Stormwater Infiltration and Outflow. Journal of Irrigation & Drainage Engineering 143(8): 04017027.
  18. Vargas RI, Souder SK, Morse JG, Grafton-Cardwell EE, Haviland DR, Kabashima JN, Faber BA, Mackey B, Nkomo E, Cook PJ, Stark JD. 2017. Chemical Degradation of TMR Multi-Lure Dispensers for Fruit Fly Detection Weathered under California Climatic Conditions. Journal of Economic Entomology 110 (4): 1495-1500.
  19. Stark JD, Banks JE. 2016. Developing demographic toxicity data: Optimizing effort for predicting population outcomes in ecotoxicology. PeerJ 4:e2067; DOI 10.7717/peerj.2067
  20. McIntyre J, Edmunds R, Redig M, Mudrock E, Davis J, Incardona J, Stark JD, Scholz N. 2016. Confirmation of stormwater bioretention treatment effectiveness using molecular indicators of cardiovascular toxicity in developing fish. Environmental Science and Technology 50:1561-1569.
  21. McIntyre J, Edmunds R, Anulacion B, Davis J, Incardona J, Stark JD, Scholz N. 2016. Severe coal tar sealcoat runoff toxicity to fish is prevented by bioretention filtration. Environmental Science and Technology 50:1570-1578.
  22. Banks HT, Banks JE, Everett RA, Stark JD. 2016. An adaptive feedback methodology for determining information content in population studies. Mathematical Biosciences and Engineering 13:653-671.
  23. Guedes RNC, Smagghe G, Stark JD, Desneux N. 2016. Pesticidal Stress in Arthropod Pests for Optimized Integrated Pest Management Programs. Ann. Review of Entomology 61:43-62.
  24. Stark JD, Vargas, RI, Banks JE. 2015. Incorporating variability in point estimates in risk assessment: bridging the gap between LC50 and population endpoints. Environ. Toxicol. Chem. 34: 1683-1688.
  25. Vargas RI, Souder SK, Nkomo E, Cook PJ, Mackey B, Stark JD. 2015. Weathering and chemical degradation of methyl eugenol and raspberry ketone solid dispensers for detection, monitoring and male annihilation of Bactrocera dorsalis (Hendel) and Bactrocera cucurbitae (Coquillett) (Diptera: Tephritidae) in Hawaii. Econ. Entomol. 108: 1612-1623
  26. McIntyre JK, Davis JW, Hinman C, Macneale K, Anulacion BF, Scholz NL, Stark JD. 2015. Soil bioretention protects juvenile salmon and their prey from the toxic impacts of urban stormwater runoff. Chemosphere 132: 213-219.
  27. Simon-Delso N, Amaral-Rogers V, Belzunces L.P., Bonmatin, J-M, Chagnon M, Downs C, Furlan L, Gibbons DW, Giorio C, Girolami V, Goulson D, Kreutzweiser DP, Krupke C, Liess M, Long E, McField, M, Mineau P, Mitchell EAD, Morrissey CA, Noome DA, Pisa L, Settele, J, Stark JD, Tapparo A, Van Dyck H, Van Praagh J, Van der Sluijs JP, Whitehorn PR, Wiemers M. 2015. Systemic insecticides (neonicotinoids and fipronil): trends, uses, modes of action and metabolites. Environmental Science and Pollution Research 22: 5-34.
  28. Pisa LW, Amaral-Rogers V, Belzunces LP, Bonmatin JM, Downs CA, Goulson D, Kreutzweiser DP, Krupke C, Liess M, McField M, Morrissey CA, Noome DA, Settele J, Simon-Delso N, Stark JD, Van der Sluijs JP, Van Dyck H, Wiemers M. Effects of neonicotinoids and fipronil on non-target invertebrates. Environmental Science and Pollution Research 22: 68-102.
  29. Van der Sluijs JP Amaral-Rogers V, Belzunces LP, Bijleveld van Lexmond MFIJ, Bonmatin J-M, Chagnon M, Downs CA, Furlan L, Gibbons DW, Giorio C, Girolami V, Goulson D, Kreutzweiser DP, Krupke C, Liess M, Long E, McField M, Mineau P, Mitchell EAD, Morrissey CA, Noome DA, Pisa L, Settele J, Simon-Delso N, Stark JD, Tapparo A, Van Dyck H, van Praagh J, Whitehorn PR, Wiemers M. 2015. Conclusions of the Worldwide Integrated Assessment on the risks of neonicotinoids and fipronil to biodiversity and ecosystem functioning. Environmental Science and Pollution Research 22: 148-154.
  30. Stark JD, Vargas RI, Souder S, Fox AJ, Smith TR, Leblanc, L, Mackey B. 2014. Simulated field applications of insecticide soil drenches for control of Tephritid Fruit Flies. Biopesticides International 10: 136-142.
  31. McIntyre JK, Davis JW, Incardona JP, Stark JD, Anulacion BF, Scholz NL. 2014. Zebrafish and clean water technology: Assessing soil bioretention as a protective treatment for toxic urban runoff. Science of the Total Environment 500-501: 173-180.
  32. Banks, JE, Stark JD, Vargas RI, Ackleh AS. Deconstructing the surrogate species concept: a life history approach to the protection of ecosystem services. Ecological Applications 24:770-778.
  33. Hamda, N.T., Forbes, V., Stark, J.D., Laskowski, R. 2014. Stochastic density dependent matrix model for extrapolating individual-level effects of chemicals to population; Case study on effects of Cd on Folsomia candida. Ecological Modelling 280: 53-64.
  34. Macfadyen S, Banks JE, Stark JD, Davies A. Using semi-field studies to examine the effects of pesticides on mobile terrestrial invertebrates. Annual Review of Entomology. Annu. Rev. Entomol. 2014. 59:383–404.
  35. Laetz CL, Baldwin DH, Hebert VR, Stark JD, Scholz NL. 2014. Elevated Temperatures Increase the Toxicity of Pesticide Mixtures to Juvenile Coho Salmon. Aquatic Toxicology 146: 38-44.
  36. Stark JD, Vargas RI, Souder S, Fox AJ, Smith TR, Mackey B. 2013. A Comparison of the Bioinsecticide, Spinosad, the Semi-synthetic Insecticide, Spinetoram and Synthetic Insecticides as Soil Drenches for Control of Tephritid Fruit Flies. Biopesticides International 9: 120-126.
  37. Palmer ET, Poor CJ, Hinman C, Stark JD. 2013. Nitrate and Phosphate Removal through Enhanced Bioretention Media; Mesocosm Study. Water Environment Research 85: 823-832.
  38. Biondi A, Zappala` L, Stark JD, Desneux N. 2013. Do Biopesticides Affect the Demographic Traits of a Parasitoid Wasp and Its Biocontrol Services through Sublethal Effects? PLoS ONE 8(9): e76548. doi:10.1371/journal.pone.0076548
  39. Vargas RI, Stark JD, Banks J, Leblanc L, Mankoukis NC, Peck S. 2013. Spatial Dynamics of Two Oriental Fruit Fly (Diptera: Tephritidae) Parasitoids, Fopius arisanus (Sonan) and Diachasmimorpha longicaudata (Ashmead) (Hymenoptera: Braconidae), in a Guava Orchard in Hawaii. Environmental Entomology 42: 888-905.
  40. Laetz CA, Baldwin DH, Hebert V, Stark JD, Scholz NL. 2013. The interactive neurobehavioral toxicity of diazinon, malathion, and ethoprop to juvenile coho salmon. Environmental Science and Technology 47:2925-2931.
  41. N., Stark, J.D. 2012. Comparison of population level and individual level endpoints to evaluate ecological risk of chemicals. Environmental Science and Technology 46:5590-5598.
  42. Vargas, RI, Souder SK, Mackey B, Cook P, Morse JG, Stark JD. 2012. Field Trials of Solid Triple Lure (Trimedlure, Methyl Eugenol, Raspberry Ketone, and DDVP) Dispensers for Detection and Male Annihilation of Ceratitis capitata (Wiedemann), Bactrocera dorsalis (Hendel) and Bactrocera cucurbitae (Coquillett) (Diptera: Tephritidae) in Hawaii. J. Econ. Entomol. 105: 1557-1565.
  43. Stark, J.D., Chen X.D., Johnson, C. 2012. Effects of Herbicides on Behr’s Metalmark Butterfly, a Surrogate Species for the Endangered Butterfly, Lange’s Metalmark. Environmental Pollution 164: 24-27.
  44. Hanson, N., Stark, J.D. Utility of population models to reduce uncertainty and increase value relevance in ecological risk assessment: An example with Daphnia exposed to the pesticide spinosad. Integrated Environmental Assessment and Management 8: 262-270.
  45. Banks, J.E., Stark, J.D., Vargas, R.I., Ackleh, A. 2011. Parasitoids and ecological risk assessment: Can toxicity data developed for one species be used to protect an entire guild? Biological Control 59: 336-339.
  46. Hanson, N., Stark, J.D. An approach for developing simple generic models for ecological risk assessments of fish populations. Environmental Toxicology and Chemistry 30: 2372-2383.
  47. Stark, J.D., Banks, J.E. 2011. Evaluating the effects of pesticides on target and non-target organisms: Population-level approaches and models. Biopesticides International 7:71-81.
  48. Banks, J.E., Stark J.D. 2011. Effects of a Nicotinic Insecticide, Imidacloprid and Vegetation Diversity on Movement of a Common Predator Coccinella septempunctata. Biopesticides International 7:113-122.
  49. Hanson, N., Stark, J.D. 2011. A comparison of simple and complex population models to reduce uncertainty in ecological risk assessments of chemicals: Example with three species of Ecotoxicology 20:1268–1276.
  50. *Hanson, N., Stark, J.D. 2011. Extrapolation from individual level responses to population growth rate using population modeling. Human and Ecological Risk Assessment 17: 1332–1347. Award-Winning paper – HERA “Paper of the Year in Ecological Risk Assessment”
  51. Forbes, V.E., Calow, P., Grimm, V., Hayashi, T.I., Jager, T., Katholm, A., Palmqvist, A., Pastorok, R., Salvito, D., Sibly, R., Spromberg, J., Stark, J.D., Stillman, R.A. 2011. Adding value to ecological risk assessment with population modelling. Human and Ecological Risk Assessment 17: 287–299.
  52. Deardorff, A., Stark, J.D. 2011. Population-level Toxicity of the Insecticide, Spinosad and the Nonylphenol Polyethoxylate, R-11, to Ceriodaphnia dubia. J. Environ. Sci. Health, Part B. 46: 336 – 340.
  53. Chen, X.D., Stark, J.D. 2011. Lethal and Sublethal Effects of the Neem insecticide, Azatin, on the Crustacean Ceriodaphnia dubia. Biopesticides International 6: 105-111.
  54. Chen, X.D., Stark, JD. 2010. Individual- and population-level toxicity of the insecticide, spirotetramat and the agricultural adjuvant, Destiny to the Cladoceran, Ceriodaphnia dubia. Ecotoxicology 19: 1124-1129.
  55. Vargas, R.I., Piñero, J.C., Jang, E.B., Mau, RFL, Stark, J.D., Gomez, L., Stoltman, L., Mafra-Neto, A. 2010. Response of Melon Fly (Diptera: Tephritidae) to Weathered SPLAT-Spinosad-Cue-Lure1. J. Econ. Entomol. 103:1594-1602.
  56. Vargas RI, Mau RFL, Stark JD, Pinero JC, Leblac l, Souder, SK. 2010. Evaluation of methyl eugenol and cue-lure traps with solid lure and insecticide dispensers for fruit fly monitoring and male annihilation in the Hawaii areawide pest management program. J. Econ. Entomol. 103: 409-415.
  57. Chen, X.D., Culbert, E., Herbert, V., Stark, JD. 2010. Mixture effects of the adjuvant R-11 and the insecticide imidacloprid on population growth rate and other parameters of Ceriodaphnia dubia. Ecotoxicology and Environmental Safety 73:132-137.
  58. Banks, J.E, Ackleh, A., Stark, J.D. 2010. The use of surrogate species in risk assessment: using life history data to safeguard against false negatives. Risk Analysis 30:175-182.
  59. Forbes, V.E., Calow, P., Grimm, V., Hayashi, T., Jager, T., Palmpvist, A., Pastorok, R., Salvito, D., Sibly, R., Spromberg, J., Stark, J., Stillman, R.A. 2010. Integrating population modeling into ecological risk assessment.  Integrated Environmental Assessment and Management 6:191-193.
  60. Vargas, R.I., Burns, R.E., Mau, R.F., Stark, J.D., Cook, P., and Pińero, J.C. 2009. Captures in methyl eugenol and cue-lure detection traps with and without insecticides and with a Farma Tech solid lure and insecticide dispenser. J. Econ. Entomol. 102: 552-557.
  61. Stark, J.D., Vargas, R, Miller, N. Chaney, N. 2009. Oral and topical toxicity of fipronil to melon fly and oriental fruit fly (Diptera: Tephritidae). J. Entomological Science 44:1-7.
  62. Vargas RI, Piñero JC, Mau RFL, Stark JD, Hertlein M, Mafra-Neto A, Coler, R, and Getchell A. 2009. Attraction and Mortality of Oriental Fruit Flies (Diptera: Tephritidae) to SPLAT-MAT-Methyl Eugenol with Spinosad. Entomologia Experimentalis et Applicata. 131: 286–293
  63. Deardorff, A., Stark, J.D. 2009. Acute toxicity and hazard Assessment of Spinosad and R-11 to three Cladoceran species and Coho salmon. Bull. Contam. Toxicol. 82: 549-553.
  64. Laetz, C.A., Baldwin, D.H., Hebert, V., Stark, J.D., Scholz, N.L. 2009. The synergistic toxicity of pesticide mixtures: implications for ecological risk assessment and the conservation of threatened Pacific salmon. Environmental Health Perspectives 117:348-353.
  65. Stark, J.D., Vargas, R. 2009. An Evaluation of alternative insecticides to diazinon for control of Tephritid fruit flies (Diptera: Tephritidae) in Soil. J. Econ. Entomol. 102: 139-143.
  66. Banks, H.T., Banks, J.E., Joyner, S.L., Stark, J.D. 2008. Dynamic models for insect mortality due to exposure to insecticides. Mathematical and Computer Modelling 48: 316-332.
  67. Vargas, R.I., Stark, J.D., Hertlein, M., Neto, A.M., Coler, R. 2008. Evaluation of SPLAT with Methyl Eugenol or Cue-Lure and Spinosad for “Attract-and-Kill” of Oriental and Melon Fruit Flies (Diptera: Tephritidae) in Hawaii. J. Econ. Entomol. 101: 759-768.
  68. Banks, J.E., Dick, L.K., Banks, H.T., Stark, J.D. 2008. Time-varying disturbance parameters in ecology: an alternative to matrix models. Ecological Modelling 210:155-160.
  69. Banks, H.T., Banks, J.E., Dick, L.K., Stark, J.D. 2007. Estimation of dynamic rate parameters in insect populations undergoing sublethal exposure to pesticides. Bulletin of Mathematical Biology 69: 2139-2180.
  70. Stark, J.D., Vargas, R.I., Banks, J.E. 2007. Incorporating ecologically relevant measures of pesticide effect for estimating the compatibility of pesticides and biocontrol agents. J. Econ. Entomol. 100: 1027-1032.
  71. Stark, J.D., Acheampong, S. A. 2007. A demographic and modeling approach to determine the suitability of two hosts, Brevicoryne brassicae (Linnaeus) (Aphididae) and Myzus persicae (Sulzer) (Aphididae) of the aphid parasitoid, Diaeretiella rapae (McIntosh) (Aphidiidae). Pan Pacific Entomology 83: 1-8.
  72. Kramarz, P. Banks, JE and Stark, JD. 2007. Density-dependent response of the pea aphid (Hemiptera: Aphididae) to imidacloprid. Entomological Science 42: 200-206.
  73. Stark JD, Sugayama R, Kovaleski A. 2007. Why demographic and modeling approaches should be adopted for estimating the effects of pesticides on biocontrol agents. BioControl 52: 365-374.
  74. Uchida, G.K., Mackey, B.E., Vargas, R.I., Beardsley, J.W., Hardy, D.E., Goff, M.L., Stark, J.D. 2006. Response of nontarget insects to methyl eugenol, Cue-lure, Trimedlure, and protein bait bucket traps on Kauai Island, Hawaii, USA. Proceedings of the Hawaiian Entomological Society 38: 61-71.
  75. Adams, BM, Banks, HT, Banks, JE and Stark, JD. 2005. Population dynamics models of plant-insect herbivore-pesticide interactions. Mathematical Biosciences 196: 39-64
  76. Vargas RI, Stark JD, Mackey B, Bull R. 2005. Weathering trials of AmuletTM, Cue-Lure and AmuletTM Methyl Eugenol attract and kill stations with male melon flies and oriental fruit flies (Diptera: Tephritidae) in Hawaii. J. Econ. Entomol. 98:1551-1559.
  77. Stark JD and Vargas RI. Toxicity and hazard assessment of Fipronil to Daphnia pulex. Ecotox. Environ. Safety 62: 11-16.
  78. Stark JD. Crawford, R. 2005. Short-term Effects of the Neem Insecticide, Margosan-O and Chlorpyrifos on a Spider (Araneida: Linyphiidae) Community Inhabiting Turf Grass. Biopesticides International 1: 71-81.
  79. Stark, J.D. 2005. How closely do acute lethal concentration estimates predict effects of toxicants on populations? Integrated Environmental Assessment and Management 1: 109-113.
  80. Banks, JE, Stark, JD. 2004. Aphid response to vegetation diversity and insecticide applications. Agriculture, Ecosystems and Environment 103: 595-599.
  81. Acheampong, S. and Stark, J.D. 2004. Can reduced rates of a selective aphicide, pymetrozine and natural enemies act effectively together to control the cabbage aphid, Brevicoryne brassicae (Homoptera: Aphididae) on broccoli? International Journal of Pest Management 50: 275-279.
  82. Stark, JD, Vargas, RI, and N. Miller. 2004. Toxicity of Spinosad in Protein Bait to Three Economically Important Tephritid Fruit Fly Species (Diptera: Tephritidae) and Their Parasitoids (Hymenoptera: Braconidae). Journal of Economic Entomology 97: 911-915.
  83. Acheampong S and Stark JD. 2004. Effects of the agricultural adjuvant, Sylgard 309 and the insecticide, fulfill on demographic parameters of the aphid parasitoid, Diaretiella rapae. Biological Control 31: 133-137.
  84. Stark, JD, Banks, JE and Acheampong, S. 2004. Estimating susceptibility of biological control agents to pesticides: influence of life history strategies and population structure. Biological Control 29: 392-398.
  85. Stark JD, Banks JE, Vargas RI. 2004. How risky is risk assessment? The Role that Life History Strategies Play in Susceptibility of Species to Stress. 2004. Proceedings of the National Academy of Sciences 101: 732-736.
  86. Vargas, RI, Miller NW, Stark JD. 2003. Field trials of Spinosad as a replacement for Naled, DDVP, and Malathion in Methyl Eugenol and Cue-Lure bucket traps to attract and kill Male Oriental Fruit Flies and Melon Flies (Diptera: Tephritidae) in Hawaii. Econ. Entomol. 96: 1780-1785.
  87. Stark, J.D. and Vargas, R.I. 2003. Demographic changes in Daphnia pulex (Leydig) after exposure to the insecticides spinosad and diazinon. Ecotoxicology and Environmental Safety 56: 334-338.
  88. Stark, JD and Walthall, WK. 2003. Agricultural adjuvants: acute mortality and effects on population growth rate of Daphnia pulex after chronic exposure. Environ. Toxicol. Chem. 22: 3056-3061.
  89. Kramarz, P. and Stark, J.D. 2003. Population Level Effects of Cadmium and the Insecticide, Imidacloprid to the Parasitoid, Aphidius ervi after Exposure Through its Host, the Pea Aphid, Acyrthosiphon pisum. Biological Control 27: 310-314.
  90. Stark, J.D. and Banks, J.E. 2003. Population-level effects of pesticides and other toxicants on arthropods. Annu. Rev. Entomol. 48: 505-19.
  91. Wood, B. and Stark, J.D. 2002. Acute toxicity of drainage ditch water from a Washington State cranberry growing region to Daphnia pulex in laboratory bioassays. Ecotoxicology and Environmental Safety 53: 273-280.
  92. Vargas, R.I., M. Ramadan, T. Hussain, N. Mochizuki, R. Bautista and J.D. Stark. Comparisons of demographic parameters: Six parasitoids (Hymenoptera: Braconidae) and their fruit fly (Diptera: Tephritidae) hosts. Biological Control 25: 30-40.
  93. Stark, J.D. and Banks, J.E. 2001. “Selective Pesticides”: Are They Less Hazardous to the Environment? BioScience 51: 980-982.
  94. Vargas, R.I., Peck, S.L., McQuate, G.T., Jackson, C.G. Stark, J.D. & Armstrong, J.W.   Potential for areawide management of Mediterranean fruit fly with a parasitoid.  J. Econ. Entomol. 94: 817-825.
  95. Stark, J.D. 2001. Population-level effects of the neem insecticide, Neemix on Daphnia pulex. Environ. Sci and Health. B36: 457-465.
  96. Vargas, R.I., Stark, J.D., Kido, M.H., Ketter, H.M. and L.C. Whitehand. 2000. Methyl eugenol and cue-lure traps for suppression of male oriental fruit flies and melon flies (Diptera: Tephritidae) in Hawaii: Effects of lure mixtures and weathering. Journal of Economic Entomology 93: 81-87.
  97. Wennergren, U. and Stark, J.D. 2000. Modeling long-term effects of pesticides on populations: beyond just counting dead animals. Ecological Applications 10: 295-302.
  98. Vargas, R.I., Walsh, W.A. Kanehisa, D., Stark, J.D. and Nishida, T. 2000. Comparative demography of three Hawaiian fruit flies (Diptera: Tephritidae) at alternating temperatures. Annals of the Entomological Society of America 93: 75-81.
  99. Stark, J.D. and Banken, J.A.O. 1999. Importance of population structure at the time of toxicant exposure. Ecotoxicology and Environmental Safety 42: 282-287.
  100. Walthall, W. K. and Stark, J.D.   The acute and chronic toxicity of two xanthene dyes, fluorescein sodium salt and Phloxine B, to Daphnia pulex (Leydig). Environ. Pollut. 104: 207-215.
  101. Chen, C.C., Dong, Y.J. Jang, E.B. and Stark, J.D. 1999. Deterrent effects of several compounds from neem on oviposition of the apple maggot, Rhagoletis pomonella (Walsh). Plant. Prot. Bull. 41: 293-300.
  102. Banks, J. and Stark, J.D. 1998. What is ecotoxicology? An ad-hoc grab bag or an interdisciplinary science? Integrative Biology 5: 195-204.
  103. Banken, J.A.O. and J. D. Stark. 1998. Multiple routes of pesticide exposure and the risk of pesticides to biological controls: A study of neem and the seven-spot lady beetle, Coccinella septempunctata J. Econ. Entomol. 91: 1-6.
  104. Cogger, C., Bristow, P., Stark, J.D., L. W. Getzin, and Montgomery, M. 1998. Transport and persistence of pesticides in alluvial soils: I. Simazine. J. Environ. Quality 27: 543-550.
  105. Cogger, C., Stark, J.D., Bristow, P., L. W. Getzin, and Montgomery M. 1998. Transport and persistence of pesticides in alluvial soils: II. Carbofuran. J. Environ. Quality 27: 551-556.
  106. Stark, J. D., L. Tanigoshi, M. Bounfour, and A. Antonelli. 1997. Reproductive potential: Its influence on the susceptibility of a species to pesticides. Ecotoxicology and Environmental Safety. 37:273-279.
  107. Song, Mee Young, J. D. Stark and J. J. Brown. Comparative toxicity of four insecticides, including imidacloprid and tebufenozide to four aquatic arthropods. Environ. Toxicol. Chem. 16: 2494-2500.
  108. Banken, J.A.O. and J. D. Stark. 1997. Stage and age influence on the susceptibility of Coccinella septempunctata (Coleoptera: Cocinellidae) after direct exposure to the neem insecticide, Neemix. J. Econ. Entomol. 90: 1102-1105.
  109. Cai, S-S and J. D. Stark. 1997. Evaluation of five fluorescent dyes and triethyl phosphate as atmospheric tracers of agricultural sprays. J. Environmental Science and Health, Part B.32: 969-983.
  110. Cai, S-S and J. D. Stark. 1997. A method for the determination of Rhodamine B and Brilliant Sulfaflavine on cotton strings and in a spray tank mixture. Environmental Science and Health, Part B. 32: 985-1004.
  111. Walthall, W. K. & J. D. Stark. 1997. A comparison of acute mortality and population growth rate as endpoints of toxicological effects. Ecotoxicology and Environmental Safety 37:45-52.
  112. Walthall, W. K. & J. D. Stark. 1997. Comparison of two population-level ecotoxicological endpoints: the intrinsic (rm) and instantaneous (ri) rates of increase. Environ. Toxicol. Chem. 16: 1068-1073.
  113. Jang, E. B., L. A. Carvalho & J. D. Stark. Attraction of female oriental fruit fly, Bactrocera dorsalis to volatile semiochemicals from non-host plant leaves and extracts in laboratory and olfactometer assays.  J. Chem. Ecology 23 :1389-1401.
  114. Uchida, G. K., C. Encarnacion, J.D. Stark, R.I. Vargas, J.W. Beardsley & D. O. McInnis 1996. Design and relative efficiency of Mediterranean fruit fly (Diptera: Tephritidae) bucket traps. J. Econ. Entomol. 89: 1137-1142.
  115. Longley, M. & J. D. Stark 1996. Analytical techniques for quantifying direct, residual, and oral exposure of terrestrial invertebrates to pesticides. Environ. Contam. Toxicol. 57: 683-690.
  116. Stark, J.D. 1996. Entomopathogenic nematodes (Rhabditida: Steinernenatidae): Toxicity of Neem. J. Econ. Entomol. 89: 68-73.
  117. Stark, J.D. & U. Wennergren. 1995. Can population effects of pesticides be predicted from demographic toxicological studies? Econ. Entomol. 88: 1089-1096.
  118. Stark, J.D., P.C. Jepson & D. Mayer. 1995. Limitations to the use of topical toxicity data for predictions of pesticide side-effects in the field. J. Econ. Entomol. 88: 1081-1088.
  119. Stark, J.D. & J.F. Walter. 1995. Persistence of azadirachtin A and B in soil: Effects of temperature and microbial activity. J. Environ. Sci. and Health Part B30: 685-698.
  120. Stark, J.D. 1995. Noctural behavior of oriental fruit fly, melon fly and associated parasitoids in a commercial papaya growing region in Kauai. Proceedings of the Hawaiian Entomological Society 32: 149-152.
  121. Stark, J. D. & J.F. Walter. 1995. Neem oil and neem oil components affect the efficacy of commercial neem insecticides. J. Agric. Food Chem. 43: 507-512.
  122. Messing, R. H., A. Asquith, & J. D. Stark. 1995. Effects of malathion bait sprays on the non-target arthropod community associated with corn in western Kauai, Hawaii. J. of Agricultural Entomology 12: 255-265.
  123. Stark, J.D., P.C. Jepson & C.F.G. Thomas. 1994. Effects of pesticides on spiders from the lab to the landscape. Reviews in Pesticide Toxicology.  Vol 3: 83-110.
  124. Purcell, M. F., J.D. Stark & R.H. Messing. 1994. Insecticide effect on three Tephritid fruit flies and associated Braconid parasitoids in Hawaii. J. Econ. Entomol. 87: 1455-1462.
  125. Stark, J.D., R.I. Vargas & W.A. Walsh. 1994. Temporal synchrony and patterns in an exotic host-parasitoid community. Oecologia 100: 196-199.
  126. Stark, J.D. & T. Rangus. Lethal and sublethal effects of the neem insecticide, Margosan-O, on the pea aphid. Pesticide Science 41: 155-160.
  127. Vargas, R.I., J.D. Stark, G. Uchida, & M. Purcell. 1993. Opiine parasitoids (Hymenoptera: Braconidae) of oriental fruit fly (Diptera: Tephritidae) on Kauai Island, Hawaii: Islandwide relative abundance and parasitization rates in wild and orchard habitats. Environ. Entomol. 22: 246-253.
  128. Stark, J.D. & C. Shanks. 1993. Evaluation of the neem insecticide, Margosan-O, for control of soil pests in Washington State, USA. Entomol. (Trends in Agric. Sci.) 1: 7-12.
  129. Stark, J.D. 1992. Comparison of the impact of Margosan-O and Chlorpyrifos on non-target invertebrates inhabiting turf grass. Pesticide Science 36: 293-299.
  130. Stark, J. D., R. I. Vargas, R. H. Messing, & M. Purcell. 1992. Effects of cyromazine on Hawaiian Tephritid fruit flies (Diptera: Tephritidae) and their endoparasitoids (Hymenoptera: Braconidae). J. Econ. Entomol. 85: 1687-1694.
  131. Stark, J. D., T. T. Y. Wong, R. I. Vargas, & R. K. Thalman. 1992. Survival, longevity, and reproduction of Tephritid fruit fly parasitoids (Hymenoptera: Braconidae) reared from fruit flies exposed to azadirachtin. J. Econ. Entomol. 85: 1125-1129.
  132. Stark, J. D. & R. I. Vargas. 1992. Differential response of male oriental fruit fly (Diptera: Tephritidae) to colored traps baited with methyl eugenol. J. Econ. Entomol. 85: 808-812.
  133. Vargas, R. I., J. D. Stark, R. J. Prokopy & T. I. Green. 1991. Response of oriental fruit fly (Diptera: Tephritidae) and Associated Parasitoids (Hymenoptera: Braconidae) to Colored spheres. J. Econ. Entomol. 84: 1503-1507.
  134. Stark, J. D., R. I. Vargas & R. K. Thalman. 1991. Diversity and abundance of oriental fruit fly parasitoids (Hymenoptera: Braconidae) in guava orchards in Kauai, Hawaii. J. Econ. Entomol. 84: 1460-1467.
  135. Stark, J. D., R. I. Vargas & R. K. Thalman. 1990. Azadirachtin: Effects on metamorphosis, longevity, and reproduction of three Tephritid fruit fly species (Diptera: Tephritidae). J. Econ. Entomol. 83: 2168-2174.
  136. Stark, J. D. & R. I. Vargas. 1990. Comparison of sampling methods to estimate the number of oriental fruit fly and melon fly (Diptera: Tephritidae) captured in traps. J. Econ. Entomol. 83: 2274-2278.
  137. Vargas, R. I., J. D. Stark & T. Nishida. 1990. Population dynamics, habitat preference, and seasonal distribution patterns of oriental fruit fly and melon fly (Diptera: Tephritidae) in an agricultural area. Environ. Entomol. 19: 1820-1828.
  138. Moore, A., B. E. Tabashnik & J. D. Stark.   Leg autotomy: A novel mechanism of protection against insecticide poisoning in Diamond Back Moths (Lepidoptera: Plutellidae). J. Econ. Entomol. 82: 1295-1298.
  139. Stark, J. D. & M. Sherman. 1989. Toxicity, penetration, and metabolism of acephate in three fruit fly species (Diptera: Tephritidae). J. Econ. Entomol. 82: 1609-1615.
  140. Goyer, R. A. & J. D. Stark. 1984. The impact of Neochetina eich­horniae on waterhyacinth in southern Louisiana. Journal of Aquatic Plant Management 22: 57-61.
  141. Stark, J. D. & R. A. Goyer. 1983. Life cycle and behavior of Neochetina eichhorniae Warner (Coleoptera: curculionidae) in Louisiana: A biological control agent of waterhyacinth. Environ­mental Entomology 12: 147-150.

Close up image featuring John D. Stark

John D. Stark

WSU Puyallup
2606 West Pioneer
Puyallup, WA 98371-4900

Phone: 253-445-4568