Expert Details

Expert in Pesticide Toxicology, Pesticide Chemistry

Expert ID: 712680 Iowa, USA

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Expert has conducted research in pesticide toxicology and chemistry, focused primarily on insecticides, including the chlorinated hydrocarbons (such as DDT, methoxychlor, dieldrin, and heptachlor), the pyrethroids (such as pyrethrum and many synthetic pyrethroids), organophosphates, carbamates, and natural products. His work includes synthesis, insect toxicity, selectivity, mode of action studies, metabolism, and structure-activity relationships. His laboratory rears 18 species of insect pests, including flies, cockroaches, mosquitoes, grain beetles and moths, corn rootworm, cutworms, and corn borers.

Expert has conducted screening bioassays for new insecticides on over 25 species of pests. Insect problems and control strategies are studied, including insecticides, insect grow regulators, biological insecticides, natural products, repellents, and attractants.

For the past 20 years, half of Expert's research program has focused on natural insecticides. These include the monoterpenes, the flucosinolates, DIMBOA in corn, Bacillus thuringiensis, and currently several other families of natural products. His group works on their spectrum of activity, modes of action, and synthesis of derivatives and analogs. They have one patent pending in this area.

Expert has worked with approximately 15 organophosphate (OP) pesticides, investigating their fate in the environment (primarily soil) and their toxicology (mostly in insects). His research has included studies on OP transformation in insects and in soil, and the toxicity or safety of the degradation products formed. He has published about 28 scientific articles and chapters on OPs.

Over the past 26 years, Expert has taught and conducted research on insecticides at the University of Illinois, University of Guelph in Ontario, and Iowa State University. He has published over 100 articles or book chapters on pesticides and trained 26 graduate students in the area. He has served as Chairman of the Agrochemicals Division of the American Chemical Society, and is a Fellow of that professional organization. Expert has received two awards from Iowa State for Research and for Applied Research, as well as one from the Entomological Society of America.

Expert has investigated monoterpenes from the oils of mint, citrus, cedar, pine, eucalyptus, and spices. He has synthesized many analogs and derivatives of monoterpenoids. Other bio pesticides that he has worked with include B.t., gluocosinolates, pyrethrins, DIMBOA, and diatomaceous earth. Recently, he wrote a review article on the risks of natural versus synthetic insecticides.

As a consultant, Expert provides technical consulting on insecticides, herbicides, fungicides. He prepares technical reports in support of litigation. He also provides depositions testimony in legal cases regarding pesticides.

Expert may consult nationally and internationally, and is also local to the following cities: Des Moines, Iowa - Cedar Rapids, Iowa - Waterloo, Iowa - Ames, Iowa

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Year Degree Subject Institution
Year: 1974 Degree: PhD Subject: Entomology Institution: Insect Toxicology-Environmental Toxicology - University of Illinois - Urbana-Champaign
Year: 1972 Degree: MS Subject: Entomology Institution: University of Illinois
Year: 1970 Degree: BS Subject: Zoology Institution: Arizona State University - Tempe

Work History

Years Employer Title Department Responsibilities
Years: 1978 to Present Employer: Undisclosed Title: Distinguished Professor Department: Entomology Responsibilities: Expert conducts research and teaching in pesticides and insecticides.
Years: 1976 to 1978 Employer: University of Guelph, Ontario Title: Visiting Professor Department: Environmental Biology Responsibilities: Expert conducted teaching and research in pesticides.

International Experience

Years Country / Region Summary
Years: 1997 to 1998 Country / Region: Germany Summary: Pesticide research at the Federal Research Center - Juelich

Career Accomplishments

Associations / Societies
American Association for the Advancement of Science
American Mosquito Control Association
American Chemical Society
Entomological Society of America
Pesticide Science Society of Japan
Society of Environmental Toxicology and Chemistry
Society of Vector Ecology
Awards / Recognition
Margaret Ellen White Award for Mentoring Graduate Students, Graduate College, Iowa State University, Ames, IA
Alumni Achievement Award, College of Liberal Arts and Sciences, University of Illinois, Urbana-Champaign, IL
Charles F. Curtiss Distinguished Professor
International Award for Research in Agrochemicals, American Chemical Society – Agrochemicals Division
Outstanding Toxicology Faculty Mentor Award
Fellow, Entomological Society of America
Fellow, American Association for the Advancement of Science
Fellow, Agrochemicals Division of American Chemical Society
Research Award of Merit, Gamma Sigma Delta Honor Society of Agriculture, Iowa State University
Excellence in Applied Research Award, Iowa State University College of Agriculture
Mid-career Award for Research Achievement, Iowa State University Foundation
Entomology Recognition Award, North Central Branch, Entomological Society America
Guest Scientist Fellowship, Federal Research Center – Jülich, in Jülich, Germany
Newsmaker Award, American Chemical Society, Washington, DC
Faculty Appreciation Award – ISU Entomology Graduate Student Organization
Best Ecological Risk Assessment Paper (co-author) – J. Human & Ecological Risk Assessment
Distinguished Alumni Seminar, Dept Entomology, Univ. Illinois, Urbana-Champaign
Beta Beta Beta Biology Honorary
Sigma Xi Research Honorary Society (Executive Committee at ISU)
Phi Kappa Phi Honor Society (Past President of ISU Chapter)
Gamma Sigma Delta Agriculture Honorary
Publications and Patents Summary
Expert is named as an inventor on 9 patents issued. He is an inventor on two additional provisional patent applications submitted in 2016.
{Published over 200 scientific publications, including 11 books, 46 book chapters, 8 review articles, and over 140 peer-reviewed journal articles.
Topics focus mostly on the toxicology and chemistry of insecticides as well as other pesticides and insect repellents.

Additional Experience

Expert Witness Experience
Expert has provided pesticide expertise for approximately 25 legal cases since 1999, preparing expert reports and depositions in 8 cases.
Other Relevant Experience
Adjunct Faculty appointment at Texas Tech University, in The Institute for Environmental and Human Health.
Member of the Scientific Advisory Panel of EcoSMART Technologies and Kittrich Corporation.

Fields of Expertise

agricultural chemical environmental effect, aquatic environmental toxicity, aquatic toxicology, chlorpyrifos, dichlorodiphenyltrichloroethane, dichlorodiphenyltrichloroethane environmental effect, insecticide, insecticide environmental effect, insecticide toxicity, methoxychlor, methoxychlor environmental effect, permethrin, pesticide, pesticide biodegradation, pesticide environmental effect, pesticide testing, entomology, insect, roach, natural pesticide, environmental fate, environmental toxicology, organochlorine pesticide environmental effect, organophosphate pesticide, organophosphate pesticide environmental effect, agricultural pest, agricultural pesticide, soil biodegradation, biological pesticide, pesticide chemistry, natural product, botanical insecticide, pesticide manufacturing, trout, bait, biodegradation test, pesticide disposal, corn herbicide, rotenone, diazinon, insect growth regulator, turfgrass, radioactive tracer, Bacillus thuringiensis, pesticide package, mouse (rodent), pesticide neurotoxic effect, carbamate, multiple toxin interaction, microbial insecticide, crustacean, mosquito, botanical extract, pest, nematicide toxicity, pesticide toxicity, industrial chemical toxicity, fly (insect), agricultural chemical, dichlorophenoxyacetic-acid-compound environmental effect, mothproofing, biodegradation, bioaccumulation, moth, weevil, beetle, bioassay, hexachlorocyclohexane, bioremediation, naphthalene, p-dichlorobenzene, rice weevil, toxaphene, carbaryl, carbaryl environmental effect, cholinesterase inhibitor, parathion, oxychlordane, malathion, lindane, organochlorine compound, endosulfan, acaricide, disulfoton, dieldrin, aldrin environmental effect, chlorinated hydrocarbon, fumigant, chlordane, carbamate pesticide, atrazine, miticide, nematicide, aldicarb, insect nervous system, biodegradable plastic, pest control, toxicology, toxaphene environmental effect, termite control, quantitative structure-activity relationship, pyrethrum, pine oil, pest management, pentachlorophenol environmental effect, parathion environmental effect, oxychlordane environmental effect, malathion environmental effect, lindane environmental effect, kepone environmental effect, insect repellent, ichthyology, household insecticide, hexachlorocyclohexane environmental effect, herbicide environmental effect, herbicide, heptachlor environmental effect, gas-liquid chromatography, fungicide environmental effect, environmental chemistry, endrin, disulfoton environmental effect, dieldrin environmental effect, chlorinated hydrocarbon environmental effect, chlordane environmental effect, carbamate pesticide environmental effect, bioinsecticide, atrazine environmental effect, aldrin, aldicarb environmental effect, agricultural chemistry, 2,4,5-trichlorophenol environmental effect

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