Index Catalog // ScholarsArchive@OSU

Population dynamics of the cinnabar moth, Tyria jacobaeae (Lepidoptera: Arctiidae)

Creator:: Isaacson, Dennis
Abstract:: The dynamics of a field population of the cinnabar moth, Tyria jacobaeae L., were studied near Jordan, Linn County, Oregon. In both 1970 and 1971 larval populations were so large that all foliage of the host weed, tansy ragwort, Senecio jacobaea L., was consumed. The ensuing starvation accounted for the...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF DENNIS LEE ISAACSON for the

A revision of the genus Notiphila Fallén (Diptera:Ephydridae) from America north of Mexico

Creator:: Mathis, Wayne N.
Abstract:: The North American species of the shore fly genus Notiphila Fallen were taxonomically revised. Over 13,000 specimens were examined from throughout the Nearctic Region and information relating to the biology of many species occurring in the West was gathered from both field and laboratory studies. Previously used characters were reevaluated;...
Resource Type:: Dissertation
Full Text:: H. Anderson, Kenton L. Chambers, Robert L. Dennis, Ernst J. Dornfeld, and Paul Oman. I am

Insect pests of economic importance on cereal crops in the Senegal River Basin, West Africa

Creator:: Sy, Adama
Abstract:: Cereal crops cultivated in Mali, Mauritania and Senegal consist primarily of sorghum, millet, rice and maize. They form the gramineous crops that, are programmed for the agricultural improvement of the Senegal River Basin. Twelve economically important insect pests on these crops were selected for study and treated with regard to...
Resource Type:: Masters Thesis

The distribution and biology of some Anthocoridae (Hemiptera: Heteroptera) in the Pacific Northwest

Creator:: Anderson, Norman Herbert
Resource Type:: Masters Thesis
Full Text:: TetraphlepsfurvusVanDuzee.,.,....,,,.... 57 pp profugus DraJe and Harris ...... 60 GENUSAconipoconisReuter

Toxicity of some commonly used pesticides to Trioxys Pallidus and its establishment in filbert orchards of Willamette Valley

Creator:: Saeed, Mohammad
Abstract:: A parasitic wasp, Trioxys pallidus Haliday (Hymenoptera: Aphidiidae) was imported from Europe and initially released against the filbert aphid Mvzocallis coryli (Goetze) in hazelnut (filbert) orchards of the Willamette Valley, Oregon beginning in 1984. In the present study, I investigated the establishment rates of this parasitoid. A total of 13...
Resource Type:: Masters Thesis
Full Text:: , Choristoneura rosaceana (Harris). Secondary pests include: the filbert bud mites, Phytoptus avellanae (Nalepa

The relative impact of single vs. multiple agents on the biological control of Tansy ragwort (Senecio jacobaea)

Creator:: James, Rosalind R.
Abstract:: Field experiments were done to test the relative effectiveness of single and multiple biological control agents in reducing weed populations using two insects, the cinnabar moth, Tvria iacobaeae (L.), and the ragwort flea beetle, Lonqitarsus iacobaeae (Waterhouse). These two insects were released for biological control of the biennial weed tansy...
Resource Type:: Masters Thesis
Full Text:: insects (Harris 1985) or the increased chance of getting that one species which is sufficient for control

Biology and distribution of the Dicosmoecinae (Trichoptera: Limnephilidae) in western North America

Creator:: Wisseman, Robert William
Abstract:: Literature and museum records have been reviewed to provide a summary on the distribution, habitat associations and biology of six western North American Dicosmoecinae genera and the single eastern North American genus, Ironoquia. Results of this survey are presented and discussed for Allocosmoecus, Amphicosmoecus and Ecclisomvia. Field studies were conducted...
Resource Type:: Masters Thesis

Salivation and engorgement parameters of sucking insect vectors : implications in pathogen transmission

Creator:: Shieh, Jong-neng
Abstract:: The probing behavior and feeding activity of green peach aphid, Myzus persicae Sulzer, on Bacillus thuringiensis ssp. tenebrionis- transgenic potatoes, insecticide treated potatoes, and host plants with different preference were electronically monitored. I found that first, transgenic potatoes had no effect on green peach aphid probing suggesting that transmission of...
Resource Type:: Dissertation
Full Text:: with waveforms include: light and electron microscopy (McLean & Kinsey 1965, Harris & James 1973

Arthropod community organization and development in pear

Creator:: Gut, Larry J.
Abstract:: Arthropod communities in pear are conceptualized as hierarchically organized systems in which several levels of organization or subsystems can be recognized between the species population level and the community as a whole. An individual tree is taken to be the community habitat with arthropod subcommunities developing on leaf, fruit and...
Resource Type:: Dissertation
Full Text:: , Rufus and Kay LaLone, Dennis Schultz, Kevin Hearn, Steve Stark, Jan Cronhardt, Toni Dawson and the

Biological control of spider mites (Acari: Tetranychidae) on grape emphasizing regional aspects

Creator:: Prischmann, Deirdre A.
Abstract:: During summer of 1998 and 1999, 34 and 10 vineyard sites, respectively, were sampled to assess spider mite pests and associated biological control by phytoseiid mites. Vineyards studied spanned five major valleys in western Oregon where grape production occurs. Leaf samples were taken from site perimeters and centers. One leaf...
Resource Type:: Masters Thesis
Full Text:: chemical-free refuges (Boller et al. 1988, Croft et al. 1990, Dennis and Fry 1992, Lester et al. 1998

ScholarsArchive@OSU

Population dynamics of the cinnabar moth, Tyria jacobaeae (Lepidoptera: Arctiidae)

A revision of the genus Notiphila Fallén (Diptera:Ephydridae) from America north of Mexico

Insect pests of economic importance on cereal crops in the Senegal River Basin, West Africa

The distribution and biology of some Anthocoridae (Hemiptera: Heteroptera) in the Pacific Northwest

Toxicity of some commonly used pesticides to Trioxys Pallidus and its establishment in filbert orchards of Willamette Valley

The relative impact of single vs. multiple agents on the biological control of Tansy ragwort (Senecio jacobaea)

Biology and distribution of the Dicosmoecinae (Trichoptera: Limnephilidae) in western North America

Salivation and engorgement parameters of sucking insect vectors : implications in pathogen transmission

Arthropod community organization and development in pear

Biological control of spider mites (Acari: Tetranychidae) on grape emphasizing regional aspects

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