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Characteristics of Typhlodromus americanus Chant and Yoshida-Shaul (Acari: phytoseiidae) as a biological control agent of Oligonychus ununguis (Jacobi) (Acari: tetranychidae)

Creator:: Horton, Rene N.
Abstract:: The life history, temperature, humidity, and feeding requirements of the phytoseiid predator mite, Typhlodromus americanus Chant and Yoshida-Shaul were tested in the laboratory. Occurance of the mite in the field during different times of the year was investigated as well. Effects of temperature and humidity on egg hatch, the feeding...
Resource Type:: Masters Thesis
Full Text:: : Tetranychidae). Abstract approved: Jack DeAngelis The life history, temperature, humidity, and feeding

Biology and management of a mushroom-infesting sciarid fly (Diptera: Sciaridae) in relation to room-to-room dispersal

Creator:: Mehelis, Christopher N.
Abstract:: The purpose of this research is two fold. First to improve pest management of the sciarid fly (Diptera: Sciaridae) by better defining its relation to mushroom production. Secondly, to explore some of the factors and aspects of the biology of the fly which may increase room to room dispersal rates...
Resource Type:: Masters Thesis
Full Text:: . Abstract approved Jack DeAngelis The purpose of this research is two fold. First to improve pest

Seasonal abundance, distribution, and migration of the clover aphid, Nearctaphis bakeri (Cowen) in red clover

Creator:: Dreves, Amy J.
Abstract:: Four sampling techniques were evaluated to estimate clover aphid, Nearctaphis bakeri (Cowen), abundance in red clover fields in the Willamette Valley. The Berlese funnel method detected one to four times more aphids than other sampling techniques. Visual assessment often underestimated the high aphid densities during the flowering and seeding of...
Resource Type:: Masters Thesis
Full Text:: Redacted for Privacy Abstract approved:\ Jack DeAngelis Four sampling techniques were evaluated to

Transmission efficiency and life table parameters of western flower thrips, Frankliniella occidentalis (Pergande) exposed to tomato spotted wilt virus-impatiens serotype

Creator:: Sether, Diane M.
Abstract:: Peppermint, Mentha piperita 'Black Mitcham' was established as a host for tomato spotted wilt virus-impatiens serotype (TSWV-I). TSWV-I infection of peppermint, initially observed in a research greenhouse (Corvallis, OR), included stunting and downward curling of leaves accompanied by bronzing, and occasionally tip necrosis. Young leaves appeared either symptomless, deformed, or...
Resource Type:: Masters Thesis
Full Text:: professors, Dr. Jack DeAngelis and Dr. Phil Rossignol. Without their encouragement, financial support and

Distribution of Oligonychus (Oligonychus) ununguis (Jacobi) (Acari: Tetranychidae) and predator mite species (Acair: Phytoseiidae) on field-grown Douglas-fir (Pseudotsuga menziesii [Mirb] Franco) Christmas trees

Creator:: Calkin, James D.
Abstract:: The shake and wash technique (samples placed in a jar with alcohol added and shaken to remove the mites) was effective in removing 100% of the predator mites, and adult spruce spider mites from Douglas-fir foliage and 98% of the spruce spider mite nymphs. Eighty-eight percent of the spruce spider...
Resource Type:: Masters Thesis
Full Text:: approved. Redacted for Privacy Abstract approved_ Jack DeAngelis Redacted for Privacy I/Glenn Fisher

Effects of Tetranychus urticae Koch feeding injury on physiological processes in Mentha piperita L.

Creator:: DeAngelis, Jack D.
Abstract:: Studies were conducted to examine the effects of feeding injury by the twospotted spider mite (Tetranychus urticae Koch) on physiological processes of its host plant, peppermint (Mentha piperita L.). Aspects of mite-induced host plant physiological stress that were studied included: 1) effects of injury on plant-water relations; 2) photosynthesis and...
Resource Type:: Dissertation
Full Text:: Physiological Processes in Mentha piperita L. AN ABSTRACT OF THE THESIS OF Jack Douglas DeAngelis for the

Biological control of spider mites by the predatory mite Neoseiulus fallacis (Acari: Phytoseiidae) in ornamental nursery systems

Creator:: Pratt, Paul D.
Abstract:: We identified and evaluated a phytoseiid predator as a biological control agent of multiple spider mites pests that occur in ornamental nurseries. When comparing species, Neoseiulus fallacis (Garman) had a wider prey range than Galendromus occidentalis (Nesbitt), a higher probability of overwintering than Neoseiulus califomicus McGregor and was equally or...
Resource Type:: Dissertation
Full Text:: committee members, Jack DeAngelis, Jim Green, Marcos Kogan and William Proebsting were always generous

Effects of the garden symphylan, Scutigerella immaculata Newport, on physiological processes of bush snap bean, Phaseolus vulgaris L.

Creator:: Eltoum, Elameen M. A.
Resource Type:: Dissertation
Full Text:: thanks goes to Dr. Jack D. DeAngelis, for his help, support, and extended supply of valuable informations

Biological control of Tetranychus urticae Koch in hops by phytoseiid mites : feasibility, spatial aspects of interactions, and management

Creator:: Strong, Willard Billings, 1959-
Resource Type:: Dissertation
Full Text:: the path to becoming a scientific researcher. My other committee members, Phil Rossignol, Jack

Evaluation of behavioral response of Aedes aegypti mosquitoes to repellents using a novel olfactometer

Creator:: Doğan, Elif Barc̦in
Abstract:: Mosquito-borne pathogens are the cause of important, often deadly diseases worldwide; and, use of repellents is one of the components of mosquito control programs. The most effective mosquito repellent is N,N-dimethyl-m-toluamide, known as DEET. Speculation on the adverse effects of DEET have been on the rise since the 1980s, and...
Resource Type:: Dissertation
Full Text:: expectations. I thank Drs. James W. Ayres, Jack DeAngelis and Phil Rossignol for our discussions and their

ScholarsArchive@OSU

Characteristics of Typhlodromus americanus Chant and Yoshida-Shaul (Acari: phytoseiidae) as a biological control agent of Oligonychus ununguis (Jacobi) (Acari: tetranychidae)

Biology and management of a mushroom-infesting sciarid fly (Diptera: Sciaridae) in relation to room-to-room dispersal

Seasonal abundance, distribution, and migration of the clover aphid, Nearctaphis bakeri (Cowen) in red clover

Transmission efficiency and life table parameters of western flower thrips, Frankliniella occidentalis (Pergande) exposed to tomato spotted wilt virus-impatiens serotype

Distribution of Oligonychus (Oligonychus) ununguis (Jacobi) (Acari: Tetranychidae) and predator mite species (Acair: Phytoseiidae) on field-grown Douglas-fir (Pseudotsuga menziesii [Mirb] Franco) Christmas trees

Effects of Tetranychus urticae Koch feeding injury on physiological processes in Mentha piperita L.

Biological control of spider mites by the predatory mite Neoseiulus fallacis (Acari: Phytoseiidae) in ornamental nursery systems

Effects of the garden symphylan, Scutigerella immaculata Newport, on physiological processes of bush snap bean, Phaseolus vulgaris L.

Biological control of Tetranychus urticae Koch in hops by phytoseiid mites : feasibility, spatial aspects of interactions, and management

Evaluation of behavioral response of Aedes aegypti mosquitoes to repellents using a novel olfactometer

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