Index Catalog // ScholarsArchive@OSU

History and distribution of bee diseases in Oregon

Creator:: Black, A. Burr
Abstract:: This thesis is a discussion of the major bee diseases found in Oregon with notes on minor ailments of bees and on diseases not yet present followed by a history of the introduction and spread of the more important diseases, a history of bee legislation in Oregon and a discussion...
Resource Type:: Masters Thesis
Full Text:: or no importance in Oregon. Septicemia is a blood disease of adult bees caused by bacillus

Etiology and pathogenesis of chalkbrood in the alfalfa leafcutting bee, Megachile rotundata

Creator:: Vandenberg, J. D. (John Donald)
Abstract:: Chalkbrood is a mycosis of larvae of the alfalfa leafcutting bee, Megachile rotundata (Fabricius). It is a serious threat to alfalfa seed growers in western North America who use populations of this bee for pollination. Basic studies were conducted to determine the etiology of this disease and the course of...
Resource Type:: Dissertation
Full Text:: determine the etiology of this disease and the course of pathogenesis in afflicted larvae. Spores of

Insect pests affecting clover in Oregon

Creator:: Anderson, Ernest Clifford
Resource Type:: Masters Thesis
Full Text:: disease caused by Scierotinia trifoliorum, sometimes quite prevelant in Oregon, may easily be mis

Cereal stem moth, Ochsenheimeria vacculella Fischer von Röslerstamm (Lepidoptera : Ochsenheimeriidae) : field biology and larval development on selected grasses and cereals in Western Oregon

Creator:: Panasahatham, Sarote
Abstract:: The seasonal life history of the cereal stem moth (CSM), Ochsenheimeria vacculella Fischer von Roslerstamm, (Lepidoptera : Ochsenheimeriidae) was investigated in a commercial field of annual ryegrass in the Willamette Valley, OR from January 1993 to August 1994. Phenology of life stages, effect of temperature on eclosion, and development of...
Resource Type:: Masters Thesis
Full Text:: cereals in Western Oregon AN ABSTRACT OF THE THESIS OF Sarote Panasahatham for the degree of Master of

Arthropod community structure in regenerating Douglas-fir and red alder forests : influences of geography, tree diversity and density

Creator:: Schaerer, Brett L.
Abstract:: The structuring of canopy arthropod communities was reviewed and investigated in relation to tree species diversity and its component factors, interspersion of different species and density of each tree species. Fifteen treatments of Douglas-fir (Pseudotsuga menziesii) and red alder (Alnus rubra) (various densities and proportions of each) were randomly assigned...
Resource Type:: Masters Thesis
Full Text:: Western Oregon: the Cascade Head Experimental Forest and the H. J. Andrews Experimental Forest. The six

The western oak bark beetle, Pseudopityophthorus pubinpennis (Lec.), in the central Willamette Valley of Oregon

Creator:: Dobson, Richard Cecil
Resource Type:: Dissertation
Full Text:: pubinpennis (Lec.), in the central Willamette Valley of Oregon ?$IS W*ffiS e&F.x by B:*&*eB *ffirL S$SS$X

Oviposition behavior and thermal constants for egg development of the filbertworm Cydia latiferreana (Lepidoptera: Tortricidae)

Creator:: Kelly, Alice M.
Abstract:: Cydia latiferreana Wlshm. is recognized as the key insect pest of cultivated filbert (hazelnut) in Oregon. The purpose of this study was to obtain information on mating and oviposition behavior of the adult insect, to calculate the lower temperature threshold and degree-days required for egg development, and to develop an...
Resource Type:: Masters Thesis
Full Text:: . is recognized as the key insect pest of cultivated filbert (hazelnut) in Oregon. The purpose of

Biology and host relations of Meteorus comunis (Cresson)

Creator:: West, Kenneth John
Abstract:: Fifteen species of Noctuidae (Lepidoptera) were collected in alfalfa and peppermint in western Oregon. Seven of these species were hosts for the braconid parasitoid Meteorus communis. The most frequently parasitized (percent) species were Agrotis ipsilon (35.3), Dargida procincta (15.0), and Peridroma saucia (6.9). Other species parasitized were Autographa californica (3.8)...
Resource Type:: Masters Thesis
Full Text:: collected in alfalfa and peppermint in western Oregon. Seven of these species were hosts for the braconid

Impact of insects on seed production in a Douglas-fir seed orchard in Oregon

Creator:: Dombrosky, Scott A.
Abstract:: The impact of various factors on seed production in a Douglas-fir (Pseudotsuga menziesii) seed orchard in western Oregon was examined by monitoring the fate of seeds in thirty cones, stratified into three crown levels, on each of ten trees during the 1984 growing season. Cones were examined monthly between April...
Resource Type:: Masters Thesis
Full Text:: orchard in Oregon AN ABSTRACT OF THE THESIS OF Scott A. Doabrosky for the degree of Master of Science

Sampling methods, biology and management of the mint flea beetle in central Oregon peppermint

Creator:: Morris, Mark A.
Abstract:: Sampling techniques were evaluated to quantify immature mint flea beetle (MFB), Longitrsus waterhousei Kutschera (Coleoptera: Chrysomelidae), on peppermint (Mentha piperita L.), in central Oregon. During the study period, 1985-1988, soil samples of 350 cm³ were effective for collecting immature MFB. Sifting soil samples through screens was effective for estimating post-feeding...
Resource Type:: Masters Thesis
Full Text:: beetle in central Oregon peppermint AN ABSTRACT OF THE THESIS OF Mark Alan Morris for the degree of

ScholarsArchive@OSU

History and distribution of bee diseases in Oregon

Etiology and pathogenesis of chalkbrood in the alfalfa leafcutting bee, Megachile rotundata

Insect pests affecting clover in Oregon

Cereal stem moth, Ochsenheimeria vacculella Fischer von Röslerstamm (Lepidoptera : Ochsenheimeriidae) : field biology and larval development on selected grasses and cereals in Western Oregon

Arthropod community structure in regenerating Douglas-fir and red alder forests : influences of geography, tree diversity and density

The western oak bark beetle, Pseudopityophthorus pubinpennis (Lec.), in the central Willamette Valley of Oregon

Oviposition behavior and thermal constants for egg development of the filbertworm Cydia latiferreana (Lepidoptera: Tortricidae)

Biology and host relations of Meteorus comunis (Cresson)

Impact of insects on seed production in a Douglas-fir seed orchard in Oregon

Sampling methods, biology and management of the mint flea beetle in central Oregon peppermint

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