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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

Mechanisms of resistance in broccoli, Brassica oleracea italica to the garden symphylan, Scutigerella immaculata (Newport)

Creator:: Simagrai, Montri
Abstract:: Studies were conducted on the mechanisms contributing to resistance in broccoli, Brassica oleracea italica, to the garden symphylan, Scutigerella immaculata (Newport). Differences in resistance to symphylan injury were shown between five selected broccoli cultivars. The hybrid cultivars, Crusader, Green Duke and Bravo, showed a higher level of resistance to symphylans...
Resource Type:: Masters Thesis
Full Text:: Experiment Station. Bulletin 486) Howitt, A. J. and R. M. Bullock. 1955. Control of the garden centipede

Effects of synthetic 9-oxodectrans-2-enoic acid on the foraging activities of honey bees (Apis mellifera L.)

Creator:: Youngs, Lorna C.
Abstract:: An experimental formulation of 9 -oxodec-trans-2-enoic acid, the major component of honey bee (Apis mellifera L.) queen pheromone, was tested for its effect on worker foraging behavior in the pollination of sweet cherries (Prunus avium L. ). The test formulation consisted of a solid beeswax cylinder impregnated with a measured...
Resource Type:: Masters Thesis

Ecology of mites on pomaceous fruit trees and related wild hosts in Hood River Valley

Creator:: Jorgensen, Clive Darrel
Abstract:: The ecological interrelationships of mites occurring in and near the Hood River Valley, Oregon, pome fruit orchards were investigated to determine the possibility of an integrated control program using the species already present. Survey sampling methods were used to study mites on wild hosts (Crataegus douglasii Lindl., Crataegus columbiana Howell,...
Resource Type:: Dissertation
Full Text:: Experiment Station in Hood River, Oregon. They gave generously of the station's facilities and their

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

Culture and nutritional requirements of sod webworms on a meridic diet (Lepidoptera : Pyralidae : Crambinae)

Creator:: Dupnik, Theodore David
Abstract:: Attempts were made to rear Crambus topiarius Zeller, Euchromius ocellus (Haworth), Crambus bonifatellus (Hulst) and Crambus trisectus (Walker) on non-aseptic meridic diets containing wheat germ or pinto beans as basic constituents. Various methods of diet presentation and types of rearing containers were used. Shell vials and plastic cups used as...
Resource Type:: Masters Thesis

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

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

ScholarsArchive@OSU

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

Mechanisms of resistance in broccoli, Brassica oleracea italica to the garden symphylan, Scutigerella immaculata (Newport)

Effects of synthetic 9-oxodectrans-2-enoic acid on the foraging activities of honey bees (Apis mellifera L.)

Ecology of mites on pomaceous fruit trees and related wild hosts in Hood River Valley

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

Culture and nutritional requirements of sod webworms on a meridic diet (Lepidoptera : Pyralidae : Crambinae)

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

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

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