Index Catalog // ScholarsArchive@OSU

A contribution to the biology of the Pseudohylesinus nebulosus (LeConte) (Coleoptera:Scolytidae), especially in relation to the moisture stress of its host, Douglas-fir

Creator:: Stoszek, Karel Josef
Abstract:: The study (1) describes the life cycle of P. nebulosus, (2) examines stimuli that may cause the beetles to locate brood material, and (3) establishes the relationship between moisture stress in Douglas-fir and colonization by P. nebuZosus.and other meristem insects. (1) Development of P. nebulosus goes through the egg stage,...
Resource Type:: Dissertation
Full Text:: host (Person, 1931; Pertunnen, 1957; Chararas, 1959; Chapman, 1962; 1963) under a certain

A field approach to study the flight behavior of bark beetle populations (Coleoptera Scolytidae)

Creator:: Gara, R. I. (Robert Imre), 1931-
Resource Type:: Masters Thesis
Full Text:: by suitable host materia]. Chapman (9), by dissection of parent adults of Trypodsndron linatwn

A model of trophic evolutionary pathways

Creator:: Morris, A. Kimo
Abstract:: Calow (1983) realized that differences between parasites and their free-living relatives can be explained by the differences in nutrient richness. I propose a model that is based on Calow's idea which identifies the relative position of different trophic strategies (e.g. predation, grazing, parasitism and others) based on (1) the differences...
Resource Type:: Masters Thesis
Full Text:: parasitoid affliction of vertebrates. L. bufonivora eggs are laid on the skin, and after hatching, the

A quantitative survey of the fleas associated with the gray-tailed vole, Microtus canicaudus Miller

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:: deeply indebted to Dr. Frederick L. Hisaw, Jr. for guidance in endocrinological labora- tory techniques

A taxonomic revision of the Nearctic species of Apateticus Dallas and Podisus Herrich-Schaeffer (Heteroptera:Pentatomidae:Asopinae)

Creator:: Phillips, Kathryn Ann
Resource Type:: Dissertation
Full Text:: University, Fort Collins, (CSU), Dr. W. D. Fronk; Cornell University, Ithaca, NY, (CU), Dr. L. L. Pechuman

Abundance and community composition of arboreal spiders : the relative importance of habitat structure, prey availability and competition

Creator:: Halaj, Juraj
Abstract:: This work examined the importance of structural complexity of habitat, availability of prey, and competition with ants as factors influencing the abundance and community composition of arboreal spiders in western Oregon. In 1993, I compared the spider communities of several host-tree species which have different branch structure. I also assessed...
Resource Type:: Dissertation
Full Text:: occidentalis L. Tree species differed significantly in the abundance and community structure of the

Ambulatory and aerial dispersal among specialist and generalist phytoseiid mites

Creator:: Jung, Chuleui
Abstract:: Specialist and generalist phytoseiid mites are widely used for biological control of spider mites. Understanding dispersal attributes of these mites is important to implementing more stable, cost-efficient integrated pest management. In this regard, we studied dispersal of phytoseiid mites from a local ambulatory phase of movement within a prey patch...
Resource Type:: Dissertation
Full Text:: each lima bean leaf (Phaseolus lunatus L.) bordered with wet tissue under 24±1.2 °C and held under

Aphid age and in-vector virus concentration as factors influencing pea enation mosaic virus transmission by the pea aphid

Creator:: Suharto, Hendarsih
Abstract:: The relationship between pea enation mosaic virus (PEMV) and aging pea aphids was studied. Although this research initially emphasized the relationship between the decline in the rate of PEMV transmission and the 'concentration of PEMV within pea aphids, aphid age was found to be the principle factor influencing transmission. Enzymelinked...
Resource Type:: Masters Thesis
Full Text:: the whole insect study, l-day-olds initially acquired A405 = 0.06 or 2.3 ng of PEMV while 8-day-olds

Attractivity of plant volatiles and a semichemical-based bait to the western spotted cucumber beetle, Diabrotica undecimpunctata Mannerheim (Coleoptera: Chrysomelidae)

Creator:: Hongtrakul, Tawatchai
Abstract:: The adult western spotted cucumber beetle (WSCB), Diabrotica undecimpunctata undecimpunctata Mannerheim is considered a major pest of snap beans grown for processing in Western Oregon. Control consists of 1 or 2 insecticide sprays prior to harvest. A commercial semiochemical-based insecticide bait, Adios TIC®, 1.3% carbaryl + 5% buffalo gourd root...
Resource Type:: Masters Thesis
Full Text:: ef 1,2,3-trimethoxybenzene 3.88 ± 0.99 def 2.38 ± 0.86 de 1.50 ± 0.60 de 2.58 ± 0.70 ef cis-2-hexen-l

Big-eyed bugs as predators of the green peach aphid

Creator:: Puls, Karl A.
Resource Type:: Masters Thesis
Full Text:: control of puncture vine, Tribulus terrestris L. (Goeden and Ricker 1967). Since this weevil was

ScholarsArchive@OSU

A contribution to the biology of the Pseudohylesinus nebulosus (LeConte) (Coleoptera:Scolytidae), especially in relation to the moisture stress of its host, Douglas-fir

A field approach to study the flight behavior of bark beetle populations (Coleoptera Scolytidae)

A model of trophic evolutionary pathways

A quantitative survey of the fleas associated with the gray-tailed vole, Microtus canicaudus Miller

A taxonomic revision of the Nearctic species of Apateticus Dallas and Podisus Herrich-Schaeffer (Heteroptera:Pentatomidae:Asopinae)

Abundance and community composition of arboreal spiders : the relative importance of habitat structure, prey availability and competition

Ambulatory and aerial dispersal among specialist and generalist phytoseiid mites

Aphid age and in-vector virus concentration as factors influencing pea enation mosaic virus transmission by the pea aphid

Attractivity of plant volatiles and a semichemical-based bait to the western spotted cucumber beetle, Diabrotica undecimpunctata Mannerheim (Coleoptera: Chrysomelidae)

Big-eyed bugs as predators of the green peach aphid

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