|Present||Professor of Biology, Cedarville University|
|1992||Ph.D. Biological Sciences, University of Maine|
|1984||M.S. Interdisciplinary: Experimental Statistics and Entomology, New Mexico State University|
|1981||B.S. Wildlife Management, Humboldt State University|
Department of Science and Mathematics
An Investigation of the Effects of Feeding Inhibitors on Colorado Potato Beetle, Leptinotarsa decemlineata (Say), and Fall Armyworm, Spodoptera frugiperda (J.E. Smith) Larvae Faculty Dissertations (1992)
Limonoids constitute a potentially potent and abundant class of naturally-occurring insect antifeedants. The citrus limonoids are available in large quantities as waste products from the citrus industry and are easily isolated from the fruits' seeds. ...
Master's Thesis (1)
Publications in Refereed Journals (10)
Antifeedant Effects of Citrus Limonoids Differing in A-Ring Structure on Colorado Potato Beetle (Coleoptera: Chrysomelidae) Larvae Journal of Economic Entomology (1991)
The antifeedant effects of three citrus limonoids (limonin, obacunone, and nomilin) which differ only in the structure of the A-ring were compared in feeding assays with fourth-instar Colorado potato beetles, Leptinotarsa decemljneata (Say). In contrast ...
Developmental Rates, Thresholds and Thermal Constants of the Egg Parasitoid Anastatus semiflavidus (Hymenoptera: Eupelmidae) and Its Host Hemileuca oliviae (Lepidoptera: Saturniidae) Journal of Kansas Entomological Society (1989)
The effects of temperature on the development of the egg parasitoid, Anastatus semiflavidus Gahan (Eupelmidae, Hymenoptera), and its host the range caterpillar, Hemileuca oliviae Cockerell (Saturniidae, Lepidoptera), were examined. The egg of H. oliviae had ...
Structure-activity studies of modified citrus Limonoids as Antifeedants for Colorado Potato Beetle Larvae, Leptinotarsa Decemlineata Entomologica Experimentalis et Applicata (1988)
Limonin and ten structurally modified limonins were evaluated as antifeedants against 4th instar larvae of the Colorado potato beetle, Leptinotarsa decemlineata Say, in no-choice leaf dics assays. The epoxide and furan groups were shown to ...
Black Fly Species Inhabiting Northern Ohio Streams, Rivers and Natural Pond Outlets Society for Freshwater Science National Meeting (2014)
Black flies (DIPTERA: SIMULIIDAE) account for a significant proportion of the biomass that occurs in streams; and many adult simuliids are serious pests of man, birds and mammals. Historically, the distribution of black flies in ...