Index Catalog // ScholarsArchive@OSU

Soil arthropods in the Central Cascades : slash burning effects and biology of some species

Creator:: Estrada-Venegas, Edith G
Abstract:: Despite the recognized role of soil arthropod fauna on nutrient cycling and decomposition processes, many aspects of the effects of sylvicultural methods in forest ecosystems upon their biology remain poorly understood. The long term effects of prescribed fires on soil arthropods in forest ecosystems in the Pacific Northwest have never...
Resource Type:: Masters Thesis
Full Text:: effects and biology of some species AN ABSTRACT OF THE THESIS OF Edith G. Estrada-Venegas for the

Population dynamics of the Douglas-fir cone moth, Barbara colfaciana (Kft.) (Lepidoptera:Olethreutidae)

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:: , Barbara colfaciana (Kft.) (Lepidoptera:Olethreutidae) AN ABSTRACT OF THE THESIS OF THOMAS EVAN NEBEKER

Photoperiodic control of development in the leafhopper, Agalliopsis abietaria Oman

Creator:: Brown, Robert David
Abstract:: Photoperiod controls the duration of both the fourth and fifth stadia in Agalliopsis abietaria Oman. Development was arrested in the fourth stadium unless short days were given during the second and third instars; a short arrest of development occurred if the short days did not begin until the fourth instar....
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF ROBERT DAVID BROWN for the

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:: Biology of the Soft Brown Scale, Coccus Hesperidum Linn

Gamma irradiation of the western cherry fruit fly for the sterile male control technique

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:: the sterile male control technique AN ABSTRACT OF THE THESIS OF Robert David Brown for the degree

Biological control of purple loosestrife Lythrum salicaria by two chrysomelid beetles Galerucella pusilla and G. calmariensis

Creator:: Schooler, Shon
Abstract:: In the first part of this study we monitored the development of biological control of purple loosestrife Lythrum salicaria over a six-year period at Morgan Lake in western Oregon. In 1992, two beetles, Galerucella pusilla and G. calmariensis (Coleoptera: Chrysomelidae), were released to control the wetland weed at this test...
Resource Type:: Masters Thesis
Full Text:: approximately one week after emergence). G. pusilla is smaller and has solid golden-brown elytra while G

Aphid transmission of an undescribed virus from sweet cherry

Creator:: Smith, Gordon Kent
Resource Type:: Masters Thesis
Full Text:: Typed by Barbara A. Srnith ACKNOWLEDGMENTS The writer extends sincere appreciation to Dr. K" G

Survival and development of the flat-headed fir borer in forest residues as affected by host and microclimatic conditions

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:: G. Thompson, Richard G. Clarke, and Lyle R. Brown who offered many useful comments and advice

The Miridae (Hemiptera : Heteroptera) associated with noble fir, Abies procera Rehd

Creator:: Cooper, G. M.
Abstract:: The Miridae, or plant bugs, associated with noble fir, Abies procera Rehd., are discussed. Thirty six species of the Miridae were collected from noble fir. Twenty five of these species are considered only "visitors" to noble fir. The study does not deal with these species. Noble fir is a host...
Resource Type:: Masters Thesis
Full Text:: . Cooper and G. Stonedahl. Fifth instar larva Red, white and brown or dark brown larva with flattened

The bionomics of the garden symphylid, Scutigerella immaculata (Newport)

Creator:: Savos, Milton G.
Resource Type:: Dissertation
Full Text:: Graduate ØChOO1 te thesis is presented I Typed by Barbara Metzger The writer wishes to express his

ScholarsArchive@OSU

Soil arthropods in the Central Cascades : slash burning effects and biology of some species

Population dynamics of the Douglas-fir cone moth, Barbara colfaciana (Kft.) (Lepidoptera:Olethreutidae)

Photoperiodic control of development in the leafhopper, Agalliopsis abietaria Oman

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

Gamma irradiation of the western cherry fruit fly for the sterile male control technique

Biological control of purple loosestrife Lythrum salicaria by two chrysomelid beetles Galerucella pusilla and G. calmariensis

Aphid transmission of an undescribed virus from sweet cherry

Survival and development of the flat-headed fir borer in forest residues as affected by host and microclimatic conditions

The Miridae (Hemiptera : Heteroptera) associated with noble fir, Abies procera Rehd

The bionomics of the garden symphylid, Scutigerella immaculata (Newport)

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