Index Catalog // ScholarsArchive@OSU

The ecology and production dynamics of four black fly species (Diptera:simuliidae) in western Oregon streams

Creator:: Speir, Jon A.
Abstract:: Ecological and production studies of Prosimulium caudatum Shewell, P. dicum Dyar and Shannon, Simulium arcticum Malloch and S. canadense Hearle (Diptera: Simuliidae) were made in 1971 and 1972 in three streams near Corvallis, Oregon. The purpose of the study was to characterize the biology and population dynamics of larvae, and...
Resource Type:: Dissertation
Full Text:: duration. The sampling universe at each station could be effectively par- titioned to exclude areas

Ecological relationships among western Ephemerellidae : growth, life cycles, food habits, and habitat relationships

Creator:: Hawkins, Charles Patrick
Abstract:: The purpose of this study was to describe the life cycles, feeding ecology, and habitat use of western species in the mayfly family Ephemerellidae. Data were used to compare the ecological relationships and strategies among species and to examine patterns of adaptive radiation within the family. Data were further used...
Resource Type:: Dissertation
Full Text:: , overlap between species was found to be least for station, followed by substrate type, season, and food

The seasonal occurrence and distribution of stoneflies (Plecoptera) of a western Oregon stream

Creator:: Kerst, Cary Dean
Abstract:: Plecoptera were collected from four sampling stations selected to represent a range of conditions on Oak Creek, a small woodland stream originating in the foothills of the Oregon Coast Range. The elevation of Site I was 700 ft. while the lowest site was located at 225 ft. Monthly benthos samples...
Resource Type:: Masters Thesis

A study of ticks (Acarina: Ixodidae) and chiggers (Trombiculidae) from two areas in western Oregon

Creator:: Easton, Emmett Richard
Abstract:: A study of the host range and distribution of ticks and chiggers (Acari) was undertaken in two contrasting forested areas of western Oregon. Acarines were sampled from host mammals which were trapped along line transects laid out in both areas, each consisting of 18 stations 50 feet apart. Hosts were...
Resource Type:: Dissertation

Biology and control of the black cherry aphid, Myzus cerasi (FAB.), in the Willamette Valley

Creator:: Gilmore, James Eugene
Resource Type:: Masters Thesis
Full Text:: connection with the agricultural experiment station and Lor his many suggestions which aided in

Some factors in the development of northwestern entomology

Creator:: Bonnell, Daniel Ernest
Resource Type:: Dissertation
Full Text:: . Oregon Agricultural Experiment Station . 150 D. The Idaho Agricultural Experiment Station 155 E. The

The biologies of two dipterous predators of Dendroctonus pseudotsugae Hopkins (Coleoptera : Scolytdae) in western Oregon and Washington

Creator:: Johnsey, Richard Lee
Abstract:: The objectives of this study were: 1) to learn the life history and habits of Medetera aldrichii Wheeler and a Lonchaea sp. in association with the Douglas-fir beetle, Dendroctonus pseudotsugae Hopkins, in western Oregon and Washington; 2) to determine if the larvae of M. aldrichii were predaceous on the Douglas-fir...
Resource Type:: Masters Thesis
Full Text:: Foundation grants and the Oregon State Agri- cultural Experiment Station. The writer would like to

Biological and ecological aspects of the black flies of the Marys River drainage system (Diptera: Simuliidae)

Creator:: Speir, Jon Allen
Abstract:: Members of the family Simuliidae were studied in a single, confined drainage system. In addition to determining the occurrence and distribution of the species present, biological and ecological observations were made. Specific measurements and observations were accomplished to determine as much as possible about the habitat specificity and life cycle...
Resource Type:: Masters Thesis
Full Text:: from the Marys River. 29 3. Station HA, March, 1967. 71% P. exigens pupae, 36 29% P. fulvum pupae. 4

Studies on Heterostylum robustum (Osten Sacken) (Diptera : Bombyliidae), a parasite of Nomia melanderi

Creator:: Eppley, Richard Keith
Abstract:: Heterostylum robustum (Osten Sacken) is the principal parasite of the alkali bee, Nomia melanderi Ckll., one of the most efficient pollinators of alfalfa in the western United States. The purpose of the study was to determine the incidence of parasitism and to investigate the biology of H. robustum. The fly...
Resource Type:: Masters Thesis
Full Text:: . J. C. Hall, Department of Biological Control, Citrus Experiment Station, River- side, California

Varietal resisitance of hops, Humulus lupulus (Linn.), to the two-spotted spider mite, Tetranychus urticae (Koch)

Creator:: Mayberry, Terrel Wilson
Abstract:: The purpose of this study was to determine the relative resistance of genetic lines of hops, Humulus lupulus (Linn.) to the two-spotted spider mite, Tetranychus urticae (Koch) in western Oregon. Approximately three-hundred genetic lines of hops were screened under insectory conditions during the 1965 growing season at Corvallis, Oregon. Reduction...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

The ecology and production dynamics of four black fly species (Diptera:simuliidae) in western Oregon streams

Ecological relationships among western Ephemerellidae : growth, life cycles, food habits, and habitat relationships

The seasonal occurrence and distribution of stoneflies (Plecoptera) of a western Oregon stream

A study of ticks (Acarina: Ixodidae) and chiggers (Trombiculidae) from two areas in western Oregon

Biology and control of the black cherry aphid, Myzus cerasi (FAB.), in the Willamette Valley

Some factors in the development of northwestern entomology

The biologies of two dipterous predators of Dendroctonus pseudotsugae Hopkins (Coleoptera : Scolytdae) in western Oregon and Washington

Biological and ecological aspects of the black flies of the Marys River drainage system (Diptera: Simuliidae)

Studies on Heterostylum robustum (Osten Sacken) (Diptera : Bombyliidae), a parasite of Nomia melanderi

Varietal resisitance of hops, Humulus lupulus (Linn.), to the two-spotted spider mite, Tetranychus urticae (Koch)

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