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Creator:: Wilmot, Thomas Ray
Resource Type:: Masters Thesis
Full Text:: effective. Pheromones are being used in pest management programs for detecting and monitoring insect

Creator:: Todd, James Gordon
Abstract:: The seasonal development and habits of Labops hesperius Uhler were studied in rangeland seeded to intermediate wheatgrass (Agropyron intermediurn (Host) Beauv. ) in Baker County, Oregon, The first nymphs appeared on March 22, and required about one week to complete each of the five nymphal stadia. Most small nymphs stayed...
Resource Type:: Masters Thesis
Full Text:: wheatgrass are well suited to rangelands of western North America because of their tolerance of cold and

Creator:: Nebeker, T. Evan
Abstract:: A population of the Douglas-fir cone moth, Barbara colfaxiana (Kft. ), was studied on the Buckhead Seed Production Area, Oakridge, Oregon, during 1971 and 1972. A method of estimating cone and insect populations is presented. Factors contributing to the mortality of B. colfaxiana are discussed, with resinosis being the critical...
Resource Type:: Dissertation
Full Text:: by an un- identified disease. The larvae were black and the body cavity was filled with a fluid

Creator:: Brown, Robert David
Abstract:: The western cherry fruit fly, Rhagoletis indifferens Curran, was studied to determine the suitability of the sterile insect technique for its control. To obtain insect material, field collection of maggots is preferred to sifting of soil or rearing on artificial diet. The western cherry fruit fly is strictly univoltine; only...
Resource Type:: Dissertation
Full Text:: Adults 9 Eggs, Larvae, and Pupae 11 Early Pest Status and Spread 12 Difficulties in Changing Hosts 16

Creator:: Robbins, Richard George
Abstract:: A study of the population dynamics and ecology of the fleas associated with the gray-tailed vole, Microtus canicaudus Miller, was conducted on three sites surrounding the city of Corvallis, Oregon. Over a period of 12 months, 22,641 adult and larval fleas representing three families and eight species were recovered from...
Resource Type:: Masters Thesis
Full Text:: of the site and broken only occasionally by clumps of orchard-grass (Dactylis glomerata Linnaeus

Creator:: Scott, Donald Wayne
Abstract:: The purpose of this study was to examine various host and microclimatic influences affecting the survival and development of the flatheaded fir borer, Melanophila drummondi (Kirby) in Douglas fir, Pseudotsuga menziesii (Mirbel) Franco residues. It also expands current knowledge of the biology, bionomics, life history, ecology, and biotic potential for...
Resource Type:: Dissertation
Full Text:: , and disease (Cramer, 1974). Hence, before environment- ally sound residue management strategies can

Creator:: Reissig, William Harvey
Abstract:: The effects of synthetic juvenile hormone on the viability of eggs, metamorphosis of nymphs, and mating behavior of males and females in diapause was investigated by treating Draeculacephala crassicornis with ENT 33972a. The viability of eggs was reduced 14% by a small dose (0.001 μg) of synthetic juvenile hormone applied...
Resource Type:: Dissertation
Full Text:: Compounds with Juvenile Hormone Activity in Insect Pest Management 12 MATERIALS AND METHODS 14 Biology of

Creator:: Stimac, Jerry Lynn
Abstract:: The dynamics of tansy ragwort, Senecio jacobaea L. , and the cinnabar moth, Tyria jacobaeae (L.) were studied with the aid of a system simulation model. The model development and validation were based on knowledge of the plant and herbivore gathered from the literature, four years of data from previous...
Resource Type:: Dissertation
Full Text:: moth to control tansy ragwort and some considerations for development of pest management strategies

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