Index Catalog // ScholarsArchive@OSU

Interactions and persistence of the mosquitocidal bacteria Bacillus sphaericus and Bacillus thuringiensis var. israelensis

Creator:: Donegan, Katherine K.
Abstract:: Interactions between Bacillus sphaericus and Bacillus thuringiensis israelensis (Bti), persistence of insecticidal activity in the mosquito habitat, and suitability of enzyme-linked immunoabsorbent assay (ELISA) for detecting and quantifying bacterial endotoxin in the mosquito habitat were investigated. Interactions between the two bacterial species were examined by laboratory and field bioassays with...
Resource Type:: Masters Thesis
Full Text:: . Rohrman and his laboratory members, for providing advice and research materials and to Abbott

The biologies of two dipterous predators of Dendroctonus pseudotsugae Hopkins (Coleoptera : Scolytdae) in western Oregon and Washington

Creator:: Johnsey, Richard Lee
Abstract:: The objectives of this study were: 1) to learn the life history and habits of Medetera aldrichii Wheeler and a Lonchaea sp. in association with the Douglas-fir beetle, Dendroctonus pseudotsugae Hopkins, in western Oregon and Washington; 2) to determine if the larvae of M. aldrichii were predaceous on the Douglas-fir...
Resource Type:: Masters Thesis
Full Text:: preparation of this thesis: To Dr. William P. Nagel for guidance in carrying out the research, translation

The biologies of predators (Coleoptera: Cleridae) of the Douglas-fir beetle, Dendroctonus pseudotsugae Hopkins (Coleoptera : Scolytidae), in western Oregon

Creator:: Cowan, Bruce Dudley
Abstract:: Six species of Cleridae, including Enoclerus spegeus Fabricius, E. lecontei Wolcott, E. schaefferi (Barr), E. eximius Mannerheim, Thanasimus undatulus Say, and an undescribed species of Enoclerus, were found on Douglas-fir in western Oregon. E. sphegeus was the only clerid of the six species studied which was primarily associated with the...
Resource Type:: Masters Thesis
Full Text:: appreciation to the following people for their help in the preparation of this thesis: To Dr. William P

Environmental impacts on native bumble bee pollinators in an agricultural landscape of western Oregon

Creator:: Skyrm, Kimberly M.
Abstract:: Bumble bees provide vital pollination services in both native and agricultural landscapes. However, in recent years, bumble bee populations have experienced global population declines. The primary causes of these declines have been attributed to the environmental impacts of pathogens, pesticide use and habitat fragmentation. While research has examined the impacts...
Resource Type:: Dissertation
Full Text:: , and writing of research in Chapter II-V. Dr. William P. Stephen assisted with study design, data

Biology of the soft brown scale, Coccus hesperidum Linn., and control of soft scales on holly

Creator:: Adlerz, W. C. (Warren Clifford)
Resource Type:: Masters Thesis
Full Text:: reduced from 47 to 1 . The number of scales 1n the check ohaneed from 53 to 52 . Using Abbott ' s

Seasonal distribution, sex attractants, and applied biology of the strawberry crown moth, Synanthedon bibionipennis (Boisduval), in Oregon (Lepidoptera:Sesiidae)

Creator:: Wilmot, Thomas Ray
Resource Type:: Masters Thesis
Full Text:: , Rubus occidentalis L., in Oregon (Zeller and Schuh, 1944; Rosenstiel and Vaughn, 1952). It has also been

Integration of microbial and chemical controls against codling moth, Cydia pomonella (L.) : laboratory and field evaluation

Creator:: Bajwa, Waheed Ibrahim
Abstract:: The feasibility of managing codling moth, Cydia pomonella (L.), with mixtures of Bacillus thuringiensis-based microbial and selected chemical insecticides was studied under laboratory and field conditions. Joint actions (synergism, additivity and antagonism) of these mixtures were determined for both egg and larval stages. Higher rates of microbial control agents (MCAs),...
Resource Type:: Dissertation

Effects of single and simultaneous challenges using DDT and a nuclear polyhedrosis virus against the variegated cutwork, Peridroma saucia (Hübner)

Creator:: Harper, James Douglas
Abstract:: A study of mortality, food consumption, food utilization, and polyhedral production following single and simultaneous challenges of the variegated cutworm, Peridroma saucia (Hubner), with DDT and a nuclear polyhedrosis virus was made. Fourth instar larvae were challenged topically with three levels of DDT and per os with three levels of...
Resource Type:: Dissertation
Full Text:: of laboratory space and facilities. My minor professors, Dr. William P. Nagel, Associate Professor

A brief study of the history of entomology

Creator:: Maris, W. Homer
Resource Type:: Masters Thesis
Full Text:: copperplate ngravr of Iunsterdam. Work in engraving not since excelled. Abbott, John. Wor published in

Detection and characterization of resistance to pesticides in codling moth, Cydia pomonella L. from Oregon

Creator:: Arshad, Muhammad, 1958-
Abstract:: Toxicological studies were carried out to evaluate the susceptibility of codling moth, Cydia pomonella L. to different insecticides. Bioassay procedures for adults and larvae were standardized in terms of posttreatment holding and temperature, age and sex of insects, insecticide formulations and selection of a reference strain. This study detected a...
Resource Type:: Masters Thesis
Full Text:: United States utilize OP insecticides including azinphosmethyl and phosmet (Madsen and William 1968

ScholarsArchive@OSU

Interactions and persistence of the mosquitocidal bacteria Bacillus sphaericus and Bacillus thuringiensis var. israelensis

The biologies of two dipterous predators of Dendroctonus pseudotsugae Hopkins (Coleoptera : Scolytdae) in western Oregon and Washington

The biologies of predators (Coleoptera: Cleridae) of the Douglas-fir beetle, Dendroctonus pseudotsugae Hopkins (Coleoptera : Scolytidae), in western Oregon

Environmental impacts on native bumble bee pollinators in an agricultural landscape of western Oregon

Biology of the soft brown scale, Coccus hesperidum Linn., and control of soft scales on holly

Seasonal distribution, sex attractants, and applied biology of the strawberry crown moth, Synanthedon bibionipennis (Boisduval), in Oregon (Lepidoptera:Sesiidae)

Integration of microbial and chemical controls against codling moth, Cydia pomonella (L.) : laboratory and field evaluation

Effects of single and simultaneous challenges using DDT and a nuclear polyhedrosis virus against the variegated cutwork, Peridroma saucia (Hübner)

A brief study of the history of entomology

Detection and characterization of resistance to pesticides in codling moth, Cydia pomonella L. from Oregon

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