Life Sciences Commons^™

Ticks Of The Genus Haemaphysalis In The Western United States, Joe M. Merino

Theses and Dissertations

Two species of Haemaphysalis occurring in the western United States were studied with respect to geographical distribution, seasonal occurrence, host-parasite association and external anatomy and morphology. H. leporispalustris is widely distributed in the west. Abundant records for some states are lacking and should be provided to extend the knowledge of this tick's distribution.

An Ecological Study Of Waterfowl Habitat At Powell's Slough, Utah Lake, Bruce I. Barnett

Theses and Dissertations

This study attempts to give a preliminary survey of the marsh habitat in Powell's Slough near Utah Lake. The following aspects are treated: seasonal waterfowl utilization of the slough, productivity of nesting water-fowl, description of the vegetation, invertebrate analysis, and analysis of environmental factors that may influence the habitat.

Aquatic Phycomycetes Of Lily Lake, Hugh Macmillan Rooney

Theses and Dissertations

Lily Lake, a subalpine lake in the Wasatch National Forest Tl5, R9E, S31, of the Uinta Mountain Region, Utah, is located about one-half mile west of Trial Lake at an elevation of 10,000 feet. This Lake, which is one of the acidic, cold, lentic bogs characteristic of this area, has been selected for a taxonomic and seasonal distribution study of acquatic phycomycetes. This study is a beginning to our knowledge of the role of the fungi in the hydrobiology of Lily Lake and will supply the first information on record of the water molds of this area. The study identifies …

Physiological Variations In The Uinta Ground Squirrel (Citellus Armatus) In Relation To Seasonal Activity And Altitude, Marden Reed Kohler

Theses and Dissertations

The purpose of this investigation was to study the weight changes of selected internal organs to determine possible physiological variation occurring at six different altitudes ranging from 5,800 to 8,500 feetand during the summer season. This report was limited to the study of changes in the adrenal glands, kidneys, testes, heart and intestines. Electrocardiogram, heart and respiration rates were investigated also. These changes were statistically analyzed to determine possible seasonal differences along with any significant changes occurring at different elevations. The results of the study should in part overcome the lack of current experimental data for Citellus armatus.

A Study Of The Golden-Mantled Ground Squirrel (Citellus Lateralis) In A Sagebrush-Grass Community, Dennis E. Peterson

Theses and Dissertations

Golden-mantled ground squirrels (Citellus lateralis Say) typically inhabit coniferous forest regions, but they occasionally occur in desert shrub habitats. The principal purpose of this study was to observe activities of mantled squirrels in a sagebrush community, and to ascertain factors which contribute to their success in an unusually arid habitat. Squirrels of this community belong to the subspecies C. l. lateralis; however, intergradation between typical C. l. lateralis and C. l. castanurus is evident. This community is in the Wasatch Mountains at an elevation of 5,750 feet, and in the Upper Sonoran Zone. These three conditions were not previously recorded …

Investigations Into The Spawning Ecology Of The White Bass Roccus Chrysops, (Rafinesque) In Utah Lake, Utah, Frédérick Vinvent

Theses and Dissertations

Utah Lake, located in Utah County, north-central Utah, is one of the most important natural fishing lakes in the state. The spawning ecology of the white bass (Roccus chrysops) was studied in Utah Lake between 1964 and 1966. Gill nets and seining were the primary means of sampling. The spawning location was sampled every other day throughout the spring and early summer of 1966. Three major winter schooling areas were found: Provo Bay - Creer Access south to the mouth of Spanish Fork River, Lincoln Beach, and off Ludlow Barn. There appears to be extensive winter feeding and movement among …

Life History And Ecology Of The Colorado Chipmunk (Eutamias Quadrivittatus Hopiensis), Carl Eugene Wadsworth

Theses and Dissertations

Observations of reproductive behavior, growth and development of the young, food habits, habitat preference, and daily and seasonal activity patterns of the Colorado chipmunk are presented for the first time. The breeding cycle is as follows: mating occurs in late February or early March; the young are born in early to mid-April and first appear above ground in May, but do not reach breeding age until the following spring. There is only one litter of young per year. The mean number per litter was 5.7 for three litters born in captivity. The sex ratio of the animals born in captivity …

The Taxonomy And Ecology Of The Fleshy Fungus Flora Of The Snowbanks In The Mirror Lake Region Of The Uinta Mountains, Mary Virginia Charlton Dublin

Theses and Dissertations

The ecology and taxonomy of the snowbank fleshy fungi in the vicinity of Mirror Lake, Uinta Mountains, Utah were investigated during 1963, 1964, and 1965. A total of 59 speciaes, representing the Agaricales, Polyporales, Thelephorales, Gastromycestes, Myxomycetes, Dacrymycetales, and Ascomycetes, were found associated with the snowbanks. Four of these species (Geupiniopsis alpinus, Polyporus alboluteus, Polyporus leucospongia and Sterile myclium I) have presence percentages of 100% and three (Stereum Rugisporum, Dasyscypha arida and Herpotichia nigra) had presence percentages of 90%. The lignicolous fungi were found to be more frequent around the snowbanks than either the terrestrial or coprophilous fungi. No fleshy …

Union Response To Technological Change, William E. Hart

Theses and Dissertations

Basic to the development of featherbedding are the fear of displacement and resistance to the use of the machine. Featherbedding grew out of an environment of violence in which destruction of machinery was frequent and represents a more civilized (sic) manner by which workers can protect their employment opportunities. Since the plight of workers affected by technological change concerns many groups of workers in the economy, different attitudes toward displacement and technological change are examined in this study.

Clearly apparent is the fact that featherbedding is part of the larger problem of technological displacement •. As industrial and governmental techniques …

A Geographical Analysis Of The Emergence And Subsequent Disappearance Of The Cotton Industry In The Virgin River Basin (1856-1910), Brooks Kent Hanson

Theses and Dissertations

At one time the cotton industry in Utah was a flourishing activity. Many pioneer farmers were engaged in the growing of this staple for the purpose of providing much needed cotton for the Territory of Utah before the days of railroads and highways. After the favorable climatic conditions for agriculture in Utah's Dixie were discovered, leaders of the Latter-day Saint Church made plans for the growing of many fruits and vegetables of the temperate zone. Of these, cotton received by far the most attention, as a domestic source of this raw material was at one time vital to the well …

Ecological Relationships Of The Aquatic Macroinvertebrates Of The Cascade Springs Area, Eugene Clark Devenport

Theses and Dissertations

The U.S. Forest service, recognizing the scenic, scientific, and educational value of the Cascade Springs area near Mount Timpanogos, has set aside and begun development of this spot for the use of the general public. As part of their preparatory work they have asked that examination be made of the flora, fauna 9 and physical features which may in part be incorporated into public informational facilities being constructed at the springs.

Small Mammal Invasion Of A Trapped-Out Habitat, Lester Dennis Flake

Theses and Dissertations

Small mammals, with their numerous adaptations, have successfully inhabited most biotic communities. Interactions arising from competition among small mammals in these communities may lead to a rather complex social organization with poorly defined boundaries which limit the movement of individuals. Important among these are territorial boundaries sometimes established by small mammals to protect all or part of their home range.

An Ecological Life History Of Budsage In Western Utah, Benjamin W. Wood

Theses and Dissertations

The ecological life history of budsage (Artemisia spinescens D.C. Eaton) was investigated during 1963 and 1964. The field studies were conducted at the Desert Experimental Range in Millard County, Utah. Laboratory studies were done at Brigham Young University. The different community types in which budsage grows were described and the physical site factors, viz. climate, soil texture, total soluble salts, hydrogen ion concentration of the soil, carbonate content and soil moisture were investigated. Phenology of seedlings, root systems, shoot and flower development, and plant longevity were investigated. Studies were also made on the effects of different seasons and intensities of …

Salix In Utah, Alv Dan Youngberg

Theses and Dissertations

This thesis is a study of the native and naturalized species of Salix in Utah, and is based upon the following methods. A review of all available literature was accomplished in order to compile a list of species. Type specimens were obtained from the University of California at Berkeley, the Smithsonian Institution, and the Gray Herbarium of Harvard University, University of Utah, and Utah State University. About five-hundred specimens were collected in twenty counties during the fall fo 1965 and the spring of 1966. The identification of the willows in this study was based upon type specimens, annotations by Carleton …

The Weberian Osteology Of Three Utah Suckers (Catostomidae), William James Stubbs

Theses and Dissertations

The Weberian mechanisms of three Utah Lake suckers (Catostomidae: Catostominae; Catostomini), Catostomus fecundus Cope and Yarrow, Chasmistes liorus Jordan, and Catostomus ardens Jordan and Gilbert, were examined, described, and compared, and a statistical analysis was made of some of their more important differences. The mechanisms were found to be basically similar to one another and to those of other Catostomini as previously described and/or illustrated. They are individually distinct, but each varies within its own limits, the intraspecific variation being greatest in the wider-ranging Catostomus ardens and least in the seemingly most restricted Catostomus fecundus. From the evidence at hand …

Dermacentor Andersoni And Rocky Mountain Spotted Fever In National Forest Recreational Sites Of Utah, C. Selby Herrin

Theses and Dissertations

The objectives of this study were to determine (1) the prevalence of adult ticks of Dermacentor andersoni in national forest recreational sites of Utah, and (2) the incidence of spotted fever rickettsia, Rickettsia rickettsii, in the ticks of these areas. With the use of a white flannel cloth, 358 adult D. andersoni (135 males and 223 females) were collected from 48 recreational sites during the spring and summer of 1964. Ticks from each collection were put in pools, preserved in non-fat skim milk at -30° C, and subsequently tested for the presence of spotted fever rickettsia by guinea pig inoculations. …

Meadow, Millard County, Utah: The Geography Of A Small Mormon Agricultural Community, Richard H. Jackson

Theses and Dissertations

The agricultural village was the basis of the original economy of Utah established by the Mormon settlers, but it has since been supplanted in importance by the industrial and commercial activities of the large centers of the Wasatch Front counties of Salt Lake, Weber, and Utah. This study was conducted in an attempt to determine the future of those communities removed from industrialized northern Utah. The village of Meadow, Millard County, was chosen as an example and it was subjected to a detailed geographic analysis. From this analysis conclusions have been drawn regarding its future.

Summer Soil And Air Temperatures In Four Plant Communities, Paul W. Conrad

Theses and Dissertations

Temperature, one of the most influential factors controlling the growth and distribution of plants, was measured during a three month summer period within several stands of vegetation. The stands represented four distinct plant communities: sagebrush-grass, mountain brush, aspen, and conifer. Measurements were obtained by a sucrose inversion method which gave exponential average or effective mean temperature (eT) values. Registerants, small glass vials filled with a sucrose-buffer solution, were placed in the air 10 decimeters above the ground level and in the soil 1, 5, and 10 decimeters below the ground level. The sites were carefully described with respect to plant …

Mammal Populations And Their Effects On Red Elderberry In The Mud Creek Sheep Allotment, Stawberry Valley, Utah, Howard Duane Smith

Theses and Dissertations

The purpose of this study has been to determine : (1) the mammalian species present in the Mud Creek area; (2) the approximate population density of each trappable species; (3) the species responsible for the damage; (4) the stem density and frequency of Smbucus racemosa; and (5) the approximate extent of damage to the red elderberry stems.

A Phytosociological Study Of Coprophilous Ascomycete And Basidiomycete Communities From Santaquin Canyon, Utah, A. Clyde Blauer

Theses and Dissertations

Numerous reports have been published on the taxonomy and distribution of the coprophilous Ascomycetes and Basidiomycetes. No known quantitative work has been done, however, on the succession and structure of the communities formed by these higher fungi. This research was undertaken to study those two phases of the ascomycete and basidiomycete communities which grow and fruit on cow dung collected from Santaquin Canyon, Utah.

Revision Of Gilia (Polemoniaceae) Section Gilmania, M. Eileen Matthews

Theses and Dissertations

The results of this study show that section Gilmania (genus Gilia) consists of only two species G. latifolia and G. ripleyi, which are well separated from the rest of the members of genus Gilia by their simple, aristately toothed, obovate to orbicular leaf blades, many, small, brilliant rose, salverform corollas, basally inserted, stout-filamented stamens, and 30 to 100 small, reddish-brown, oval seeds per locule.

The Role Of Thiamine Pyrophosphate In Regulating The Level Of Gamma-Aminobutyric Acid In The Central Nervous System, Bryant L. Adams

Theses and Dissertations

The level of gamma-aminobutyric acid in the brains of white rats suffering from thiamine deficiency symptoms resulting from pyrithiamine or oxythiamine antagonism of thiamine or from thiamine deprivation was measured. The level of this amino acid was 17.5% lower in the brains of pyrithiamine-treated rats and 20.0% lower in the brains of thiamine-deprived rats than in the control rats. Daily injections of ten times the required amounts of vitamin B6 in rats treated with pyrithiamine or oxythiamine or by thiamine deprivation had no effect on the level of brain gamma-aminobutyric acid or on the psiological behavior of these rats. The …

Studies Of Rat Brain Thiamine Pyrophosphokinase, Lavell Rolfson Johnson

Theses and Dissertations

The enzyme ATP:thiamine pyrophosphotransferase (thiamine pyrophosphokinaseJ was purified from acetone powders which were prepared from rat brains up to the chromatography on alumina C_γ step by a modified procedure that Mano (Y. Mano, J. Biochem., 42, 283 (1960)] developed for the purification of the rat liver thiamine pyrophosphokinase. The enzyme was purified 12 fold over that in the original extract of the acetone powder. A spectrophotometric assay for the brain thiamine pyrophosphokinase was developed utilizing brewer's yeast apotransketolase. The transketolase assay was able to detect less than 10^-11 moles of thiamine diphosphate, which was synthesized by the kinase, in the …

A Microscopic Study Of An Early Pennsylvanian Flora From The Manning Canyon Shale, Utah, Max W. Blaylock

Theses and Dissertations

The Manning Canyon Shale on the eastern slope of Lake Mountain in Utah County, Utah contains an Early Pennsylvanian flora within its upper shales. Many of these fossils appear to be new species. A microscopic study of the tissue remains can be of value in the further classification of these fossils. Selected fossils were macerated in hydrofluoric acid, and the residues were examined microscopically for tissue remains. Objects identified as fossil tissue remains were found in twenty five of the forty-eight specimens examined. Fibers, fiber tracheids, tracheids, and spores were isolated from fossils identified as Calamites. The spores were possibly …

Identification Of The Adults, Nymphs, And Larvae Of Ticks Of The Genus Dermacentor Koch (Ixodidae) In The Western United States, Elias P. Brinton

Theses and Dissertations

In 1910 C. W. Stiles made the following comment as a part of a summary statement to his extensive study of the stigmatal plates of Dermaeentor ticks: "The specific determination of ticks is attended in many cases with con-siderable difficulty."

Tularemia And Deer Flies In The Environs Of Utah Lake, Utah, Kaye B. Cox

Theses and Dissertations

Deer flies have been implicated as mechanical veotors of tularemia in Utah. Although infected flies heretofore have not been tound in nature, there is little doubt of their importance in transmitting tularemia to man. Two species present in this area, Chrysops discalis Williston and Chrysops noctifer Osten Sacken, have been shown experimentally to transmit the disease. The presence of deer flies in the environs of Utah Lake where tularemia is endemic oftera a potential health threat to man, and the expanding human population and development ot recreational facilities adjacent to the lake inorease this potential. Despite the taot that deer …

Cytogenetic Studies Of Cercocarpus In Utah, Grant Lloyd Pyrah

Theses and Dissertations

Within the genus Cercocarpus H.B.K., commonly called mountain mahogany, there are three species, C. monanus Raf., C. ledifolius Nutt., and C. intricatus S. Wats., that occupy rather distinct habitats in Utah. During the past two years a study of Cercocarpus populations growing throughout Utah has shown not only that hybridization does occur between all three species but that in some instances viable progeny are produced from these F1 hybrids. Despite rather severe isolation barriers, there is sufficient plasticity to permit inter-breeding under certain circumstances.

A Study Of Albinism, And Some Mating Reactions In Psilocybe Mutans, Henry L. Curtis

Theses and Dissertations

In recent taxonomic works albinism is not generally recognized as being present in the Agaricales. This study was made to find how albinism was inherited in Psilocybe mutans McKnight. Cultures of P. mutans were incubated in a constant temperature room at 20-22°C. With artificial lighting at 150 foot candles for 16 hours per day and on a laboratory bench at a comparable temperature with diffuse natural light of a lesser intensity. Numerous fruit-bodies were obtained from cultures which grew on substrates containing hot water extracts of rabbit fecal pellets and from cultures grown on substates containing no fecal extracts. In …

Distribution Patterns Of Pocket Gophers In The Hobble Creek Area, Utah County, Elvis J. Holt

Theses and Dissertations

This study was initiated to investigate the distribution patterns of two species of pocket gophers, Thomomys umbrinus albicaudatus Hall and T. talpoides wasatchensis Durrant whose ranges come together in the Hobble Creek area, Utah. The effect of certain ecological factors upon their distribution was determined. The ecological factors included: vegetation and land use, soil, moisture and exposure, hybridization and interspecific competition. From morphological examination no interbreeding was detected even though the breeding seasons of the two species correspond. A limited area was found where the ranges of the two species are in contact. A lack of available moisture was determined …

Autoradiographic Localization Of Serotonin And 5-Hydroxytryptophan In The Rat Brain, Gordon Keith Matheson

Theses and Dissertations

Serotonin is a normal constituent of the brain and has been claimed to act as a neurohormonal or regulatory agent in nerve transmission. Previous workers have only studied its whole brain or subcellular particulate distribution. Because the brain itself is divided into many distinct ganglia and nuclei, the distribution of serotonin in these sites is considered to be of greater importance than either the whole brain or subcellular distribution. This paper is a study of the distribution of serotonin in particular brain sites in rats with normal and elevated levels of the amine, with and without electroshock treatment. The results …