Index Catalog // ScholarsArchive@OSU

Status, distribution and seasonal variation of filbert aphid resistance to selected insecticides in the Willamette Valley, Oregon

Creator:: Katundu, Juma
Abstract:: Levels of resistance to six selected insecticides of eleven field populations of the filbert aphid Mvzocallis coryli (Goetze) were determined by using the leaf-dip residue technique. Test insecticides included compounds widely used in commercial filbert orchards, namely, carbaryl, diazinon, endosulfan, phosalone, fenvalerate and oxydemetonmethyl. Aphid samples were collected within a...
Resource Type:: Masters Thesis
Full Text:: advice, encouragement and support throughout this work. I am very grateful to Professors Thomas Allen

Systematics and host associations of Ormyrus species (Hymenoptera: Chalcidoidea)

Creator:: Hanson, Paul E.
Abstract:: The genus Ormyrus has a worldwide distribution and comprises about sixty recognized species. The higher taxonomic relationships of the genus are uncertain, as evidenced by its placement in the families Ormyridae, Pteromalidae, or Torymidae. Here, the genus is described in detail and a preliminary catalog of the world species is...
Resource Type:: Dissertation
Full Text:: their help: Jerry Krantz, Jack Lattin, Tom Allen, and Bill Denison. I am grateful to Chris Darling for

A revision of the genus Deraeocoris Kirschbaum (Heteroptera:Miridae) from western America north of Mexico

Creator:: Razafimahatratra, Vincent de Paul
Abstract:: The genus Deraeocoris Kirschbaum of western America north of Mexico was revised. Approximately 10,000 specimens from the Nearctic Region were examined. Taxonomic characters used by previous authors were reevaluated. In addition to the male parameres, the male vesica and the female posterior wall of the bursa copulatrix and sclerotized rings...
Resource Type:: Dissertation
Full Text:: . Allen, Norman H. Anderson, Kenton L. Chambers, Robert E. Frenkel and Paul Oman. I express my thanks to

Life history and production studies of Sialis californica Banks and Sialis rotunda Banks (Megaloptera : Sialidae)

Creator:: Azam, Khaja Mohammed
Abstract:: Comparative ecological studies of Sialis californica Banks and Sialis rotunda Banks were made in Western Oregon from 1966 to 1968. Field collections for S. rotunda were made in fish holding pond at the Oak Creek laboratories, 5 miles west of Corvallis, Benton County, and for S. californica in enriched sections...
Resource Type:: Dissertation

Transmission efficiency and life table parameters of western flower thrips, Frankliniella occidentalis (Pergande) exposed to tomato spotted wilt virus-impatiens serotype

Creator:: Sether, Diane M.
Abstract:: Peppermint, Mentha piperita 'Black Mitcham' was established as a host for tomato spotted wilt virus-impatiens serotype (TSWV-I). TSWV-I infection of peppermint, initially observed in a research greenhouse (Corvallis, OR), included stunting and downward curling of leaves accompanied by bronzing, and occasionally tip necrosis. Young leaves appeared either symptomless, deformed, or...
Resource Type:: Masters Thesis
Full Text:: . And last, but certainly not least, I wish to thank Mr. Dick Samson and Dr. Tom Allen whom provided a

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:: thanks are extended to Robert Allen and Marleen Walker for their friendship, patience and technical

Aspects of the field and developmental biology of a Apanteles yakutatensis, a parasitoid of Autographa californica

Creator:: Madar, Robert John
Abstract:: Behavioral and ecological aspects of the field and developmental biology of Apanteles yakutatensis (Ashm.), a primary larval parasite of the alfalfa looper, Autographa californica (Speyer), were investigated in 1980 and 1981. Populations of A. yakutatensis were found in commercial peppermint, alfalfa and crimson clover fields involving two areas (Willamette Valley,...
Resource Type:: Masters Thesis
Full Text:: the second instar. This appears to be a common pattern among the Microgasterinae (Allen, 1958

Factors influencing pesticide resistance in Psylla pyricola Foerster and susceptibilty in its mirid predator, Deraeocoris brevis Knight

Creator:: Baan, Hugo E., van de
Abstract:: Factors influencing pesticide susceptibility and resistance were studied in Psylla pyricola Foerster, and its mirid predator, Deraeocoris brevis Knight in the Rogue River Valley, Oregon. Factors studied were at the biochemical, life history, and population ecology levels. Studies on detoxification enzymes showed that glutathione S-transferase and cytochrome P-450 monooxygenase activities...
Resource Type:: Dissertation
Full Text:: Kevin Currans and Karen Theiling for their help with computer work. Thanks to Robert Allen, Toni

Tracheal mite parasitism of honey bees

Creator:: Royce, Lynn A.
Abstract:: The tracheal mite, Acarapis woodi (Rennie), parasitizes the honey bee, Apis mellifera L., an insect used extensively by humans for pollination of domestic crops and for bee products, primarily honey. This parasite was first discovered in 1921 on the Isle of Wight, a small island situated in the English Channel...
Resource Type:: Dissertation

Distribution, phenology, and parasitism of the winter moth, (Operophtera brumata L.), in western Oregon

Creator:: Kimberling, Diana Nalani
Abstract:: An exotic pest of deciduous plants, Operophtera brumata (L.), was discovered in Portland, Oregon in 1978. O. brumata, the winter moth, is native to northern Africa and temperate Eurasia. Its range extends from Scandanavia, Britain, and France to Japan. It is also now well established on the North American continent...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Status, distribution and seasonal variation of filbert aphid resistance to selected insecticides in the Willamette Valley, Oregon

Systematics and host associations of Ormyrus species (Hymenoptera: Chalcidoidea)

A revision of the genus Deraeocoris Kirschbaum (Heteroptera:Miridae) from western America north of Mexico

Life history and production studies of Sialis californica Banks and Sialis rotunda Banks (Megaloptera : Sialidae)

Transmission efficiency and life table parameters of western flower thrips, Frankliniella occidentalis (Pergande) exposed to tomato spotted wilt virus-impatiens serotype

Arthropod community organization and development in pear

Aspects of the field and developmental biology of a Apanteles yakutatensis, a parasitoid of Autographa californica

Factors influencing pesticide resistance in Psylla pyricola Foerster and susceptibilty in its mirid predator, Deraeocoris brevis Knight

Tracheal mite parasitism of honey bees

Distribution, phenology, and parasitism of the winter moth, (Operophtera brumata L.), in western Oregon

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