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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

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
Full Text:: Feb 11 1 0 0 1 Mar 29 1 8 0 9 Apr 23 1 2 0 3 May 31 70 11 0 81 June 38 32 4 0 47 Total 364 381 82 0

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

The root maggot complex (Diptera: Anthomyiidae) in cruciferous crops of the Pacific Northwest

Creator:: Forbes, Albert Ronald
Resource Type:: Masters Thesis
Full Text:: laid on the f'orm.er group, while 364. or almost three times as many, were laid on the latter group

Insect parasites of the omnivorous leaf tier, Cnephasia longana (Haworth) in Oregon

Creator:: Poonyathawon, Panya
Abstract:: The purpose of this study was to determine the present status of introduced parasites of the omnivorous leaf tier, Cnephasia longana (Haworth) in Oregon. The omnivorous leaf tier is native to Europe. It was introduced into North America around 1929 and became a serious pest of economic crops such as...
Resource Type:: Masters Thesis
Full Text:: processed through the biological control station at Albany, California, and forwarded to Dr. R. G. Rosen

A quantitative survey of the fleas associated with the gray-tailed vole, Microtus canicaudus Miller

Creator:: Robbins, Richard George
Abstract:: A study of the population dynamics and ecology of the fleas associated with the gray-tailed vole, Microtus canicaudus Miller, was conducted on three sites surrounding the city of Corvallis, Oregon. Over a period of 12 months, 22,641 adult and larval fleas representing three families and eight species were recovered from...
Resource Type:: Masters Thesis

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

Habits and control of the Willamette mite Eotetranychus willamettei (McGregor) and related species in Hood River valley

Creator:: Olney, Vernon William
Resource Type:: Masters Thesis
Full Text:: . Mite control tests, as carried on at the hood River Branch &perinient Station, for the years 1947-51

The role of bees in pollinating alfalfa in Southern Alberta

Creator:: Hobbs, Gordon Andrew
Resource Type:: Dissertation
Full Text:: -Charge, Forage Section, Dominion Experimental Station, Lethbrdge, arid ¡r. James Blacic of this unit

The response of scutigerella immaculata to naturally occurring chemical stimuli

Creator:: Reeve, Daniel Hart
Abstract:: A study was conducted of the response of the garden symphylan, Scutigerella immaculata (Newport), to naturally occurring chemicals. Results of olfactometer studies with plant odors were inconclusive because air currents in one olfactometer and the shape of another had undesirable effects on symphylan behavior. Non-random distributions of symphylans in chambers...
Resource Type:: Masters Thesis
Full Text:: 23 23 23 23 23 23.00 P 15 19 20 22 22 22 22 22 22 22 22 22 22 22.00 Total 240 349 364 371 375 383

ScholarsArchive@OSU

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

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

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

The root maggot complex (Diptera: Anthomyiidae) in cruciferous crops of the Pacific Northwest

Insect parasites of the omnivorous leaf tier, Cnephasia longana (Haworth) in Oregon

A quantitative survey of the fleas associated with the gray-tailed vole, Microtus canicaudus Miller

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

Habits and control of the Willamette mite Eotetranychus willamettei (McGregor) and related species in Hood River valley

The role of bees in pollinating alfalfa in Southern Alberta

The response of scutigerella immaculata to naturally occurring chemical stimuli

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