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Isolation, Identification And Antibiotic Sensitivity Of Enteric Obligate Anaerobes In Cases Of Gastro-Enteritis, Gordon E. Newlin

Biology ETDs

Organisms capable of living in the absence of atmospheric oxygen were first described in 1861. However, it was not until almost forty years later that anaerobes were discovered to be associated with the human body. From 1900 until the present, most work with anaerobes concerned media and methods to promote the growth of these organisms. Their classification has been attempted, but their taxonomy still remains in a state of confusion. Rarely, and only in rather obvious cases, has the pathogenicity of these organisms been investigated. Consequently, these organisms and their relationship to pathogenicity remain relatively unknown to bacteriologists today.

Studies On The Effects Of Commercial Detergents On Cucumber And Barley, Marylu Elizabeth Mudd

Masters Theses

Introduction

The fact that large quantities of detergents daily are being added to our water table and the appearance of billows of foam at the shores of many inland bodies of water have caused alarm among biologists and sanitation engineers. However, few observations of the effects of synthetic detergents on living organisms other than bacteria have been recorded.

The purpose of these studies was (1) to determine the effects of several commercial non-biodegradable detergents, Tide, Dreft, and Alconox, and one biodegradable detergent, Living, upon the germination and root elongation of seeds of a monocotyledon, barley (Hordeum vulgare L.) and a …

Sexual Receptivity And Fertility Of Androgen Induced Persistent Estrous Rats, Norman Donald Diebel

Masters Theses

The effect of neonatally administered testosterone propionate (TP) on sexual receptivity and fertility was studied. Dosages of 25 μg and ten μg were used and were administered s.c. in peanut oil on the fifth day of life. Vaginal smears of the animals receiving 25 μg were begun at the age of 61 days and indicated that these animals exhibited modified estrous cycles. By 90 days of age, most of the animals in both dosage groups were in constant vaginal estrus. These prolonged periods of vaginal estrus were often interrupted only by mating.

At 97 days of age 40 females which …

Biosystematics And Life Histories Of The Peromyscus Guardia Group Of Mice And Peromyscus Eremicus (Rodentia: Cricetidae), Leonard R. Brand

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of this project was to investigate the taxonomic relationship and the biology of Peromyscus eremicus, and the Peromyscus guardia group of mice from islands in the Gulf of California.

Hybridization experiments were conducted between P. eremicus and P. interparietalis ryckmani. They were interfertile and produced fertile hybrids. Peromyscus guardia did not breed in the laboratory.

Body and skull measurements for P. eremicus, P. interparietalis ryckmani, and their F₁ hybrids were analyzed by computing the discriminant functions and plotting a canonical scattergram. Peromyscus interparietalis ryckmani is quite distinct from P. eremicus. The hybrids were larger than either parent …

Home Range Analysis Of The Montane Vole, Don Rogers Toews

All Master's Theses

This study on Microtus montanus was divided into three major sections: 1) An examination of nests, burrows, and runways, 2) A comparison of two methods of home range analysis--live trapping and radio-isotope tracing, and 3) A comparison of the home range of Microtus montanus with other species of Microtus as published in the literature.

Breeding Birds Of The Sandia Mountains, John L. Tatschl

Biology ETDs

A field study was conducted during the summer and winter months of 1964 and 1965 to determine what birds breed and winter in the Sandia Mountains. Study plots were established in eight different plant communities from 10,600 feet in spruce-fir to 6,350 feet in Embudo Canyon. Of the 154 species noted, 89 were found to breed in the Sandias. Permanent residents, arrival and departure dates, total numbers of breeding pairs per 100 acres per plant community, and nests were recorded. Biomass was recorded for each species and each community. The occurrence in flocks, pairs, or singly and the beginning and …

Va Survey Of Intestinal Helminths Occurring In Dogs From Albuquerque, New Mexico, Ronald P. Hathaway

Biology ETDs

In recent years there have appeared numerous publications dealing with intestinal helminth of dogs and the relationships of these helminths to public health. Although several species of helminths that normally infect dogs recently have be found to infect humans, most of these parasites are unable to complete their life cycles in man and are destined to wander aimlessly through tissues, bringing about a condition known as visceral larva migrans. The importance of such helminths as Toxocara canis and Ancylostoma canium in relation to human disease has been pointed out by Beaver et al. (1952) and Beaver (1956, 1959).

Distribution And Ecology Of The Bats Of Southern Hidalgo County, New Mexico, Jay Dee Druecker

Biology ETDs

This study has two objectives: (1) to determine the species composition and ecologic and geographic distribution of the chiropteran fauna in southern Hidalgo County, New Mexico, (2) to record the time and air temperature during periods of utilization of water holes by the species of bats found in the study area.

Most of the 1,250 specimens examined in this study were taken in mist nets over streams, ponds, and metal stock tanks. A few individuals were collected in day roosts, night roosts, hibernacula or by shooting. Most of the specimens are [reserved as standard museum study skins and skulls or …

A Comparative Floristic Study Of Mount Taylor And Redondo Peak, New Mexico, Neal L. Osborn

Biology ETDs

For several years, there has been an intensified interest and activity in floristic studies of various areas in New Mexico, especially of certain well-isolated mountain masses characteristic of many mountainous areas in New Mexico. Many of these mountain masses are, in effect, islands of Montane Biota separated from other islands by lower and drier mesa and valley barriers. Botanists realize a need to investigate thoroughly the floras of these areas with one another to reveal possible modifications in flora composition or species differences that may have arisen as a result of geographic isolation and subsequent changes in gene frequencies.

Heat Exposure And 137-Cesium Distribution In Citellus Spilosoma, Noel Savignac

Biology ETDs

Radiocesium ( ¹³⁷Cs) is formed in high yield from nuclear fission and has a long physical half-life, 27 yr. These facts plus ready absorption by the gastrointestinal tract (Hamilton, 1947) make cesium one of the most dangerous fission products and as such has provided impetus for the study of ¹³⁷Cs metabolism from the standpoint of both physical characteristics and health physics. As a portion of these investigations, the effects of temperature changes, specifically elevated environmental temperatures, were studied with the intent of demonstrating physiological factors involved in ¹³⁷Cs uptake and retention by animals native to semiarid environments. …

Some Developmental Aspects Of The Bacula Of Lasiurus And Antrozous, Modesto Del Castillo

Biology ETDs

A means of aging Lasiurus cinereus by bacular measurement was sought. The study indicated that linear measurements of the baculum cannot be used as a means of aging.

A histological study of the development of the baculum of Antrozous pallidus was conducted. The animals used in the study ranged in age from two days to eight weeks. The study showed that the structure is not preformed in cartilage.

The Initiation Of Infection By Dna From Bacteriophage Lambda, Gerald D. Elseth

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Deoxyribonucleic acid isolated from bacteriophage λ can infect Escherichia coli K12 in the presence of adsorbed helper phage (Kaiser and Hogness, 1960; Kaiser, 1962). The manner in which λ DNA enters the cell and the possible role of helper phage in the penetration process is still not clear. Kinetic studies conducted in this laboratory during the initial stages of infection by λ DNA demonstrate a requirement for helper function during the penetration of an infectious molecule. Further investigation into this problem is needed and was the major objective of this study.

A Comparative Study Of The Effects Of Starvation On Two Mating Types Of Tetrahymena Pyriformis, Carolyn Gene Mohler

Theses & Honors Papers

The initial observable event in protozoan conjugation is the union, by pairs, of cells belonging to opposite mating types. The union does not occur immediately after mixing appropriate mating types; a starvation-initiated period (the refractory period) of approximately 4 hours is prerequisite for mating between the two mating types of variety 1, Tetrahymena pyriformis employed in this study.

The results of this study indicate that water-diffusible mating substances are produced by the mating types during the refractory period. The production of these substances is initiated by placing the cells under starvation conditions and not by contacts among cells of opposite …

Ecological Studies Of Blue Grama Grass (Bouteloua Gracilis), F. W. Albertson, D. A. Riegel, Gerald W. Tomanek

Fort Hays Studies Series

Blue grama grass (Bouteloua gracilis) was selected for detailed description here because of its wide distribution and importance throughout the Great Plains Region in the United States.

Additional Information On Basicladia Crassa Hoffmann And Tilden, Robert G. Anderson, Clarence B. Sinclair

Journal of the Arkansas Academy of Science

No abstract provided.

The Comparative Osteology Of The Skulls Of Three Species Of Paralichthys, Family Bothidae, Anne Caperton Beirne

Master's Theses

This study was undertaken to determine if there were osteological variations in the skulls of young summer flounders, Paralichthys dentatus (Linaeus), southern flounders, Paralichthys lethostigma Jordan and Gilbert and - gulf flounders, Paralichthys albigutta Jordan and Gilbert that could be used as bases of species separation. As two of the species (dentatus and lethostigma) are of considerable economic importance, it would be of substantial value to establish skeletal characters that would help identify the young and. subsequently aid in determining their particular habitats where they occur in the same area.The three are closely related and difficult to recognize unless the …

Influence Of Gibberellic Acid And Indole-3-Acetic Acid On The Morphology And Population Dynamics Of Eudorina Elegans, Dale Robert Frank

Dissertations and Theses @ UNI

Recent intensified . interest in Protista has been motivated largely by simultaneous advances in development of precision equipment and of analytical techniques. The Protista serve well for biological investigation since they are easily obtained, grow well under artificial culture conditions, have a high reproductive potential , and thrive with a mini mum of care. In addition, Protista may be maintained as clonal cultures resulting in identical or nearly identical characteristics, since all organisms are progeny of the same progenitor. The advantages provided by such identical heredities are obvious.

A Study Of The Vertical And Horizontal Migrations Of Euzonus (Thoracophelia) Mucronata (Treadwell) 1914, On Pacific Coast Beaches With Regard To Environmental Factors, Arthur Bright Eikenberry

University of the Pacific Theses and Dissertations

Historical. General descriptions of intertidal zonation have been published by many workers for almost all littoral areas, both marine and lacustrine (Doty, 1957; Glynn, 1965; Hedgpeth, 1957; Lewis, 1964; Pennak, 1951). The fact that animal species of the sandy shore are few in number eliminates many complex interspecific reactions, while great numbers of individuals make population studies feasible. In addition to certain general works (Dahl, 1952; Pirrie et al., 1932; Yonge, 1950) a number of papers have discussed causative factors or mechanisms for animal zonation.

A Population Study Of The Peridiniidae Of Tomales Bay, Sidney Allen Cattell

University of the Pacific Theses and Dissertations

It is the purpose of this study to present a quantitative survey of the family Peridiniidae in Tomales Bay over the six month period between October thirtieth and May sixth. Emphasis has been placed on variation in the total Peridiniidae population for this period, on the seasonal variation of individual species, and on the possible effects of hydrographic and climatic conditions on the population.

Seasonal Tolerance Of Citellus Tridecemlineatus, Citellus Lateralis, And The Laboratory Rat To Deprivation Of Drinking Water, Gary L. Bintz

Biology ETDs

Season was investigated as a factor determining tolerance to deprivation of drinking water. Employing weight loss as a criterion, two hibernators, Citallus lateralis and C. tridecemlineatus, are more tolerant to water deprivation in any season than the laboratory rat, a non-hibernator. Both C. lateralis and C. tridecemlineatus are more tolerant to water deprivation and fall than in summer. In general, bold species demonstrate greater tolerance to water deprivation as ambient temperature decreases (in the range of 27 to 21 C ). Season appears to have no effect upon tolerance to water deprivation in the laboratory rat.

During periods of water …

A New Marine Ascomycete From Australia, A. R. Cavaliere, T. W. Johnson Jr.

Biology Faculty Publications

Most marine pyrenomycetes are lignicolous, but some are epiphytic on marine phanerogims and algae. Meyers (1957) listed 30 species of algae known to be attacked by these fungi. A number of reports dealing with marine ascomycetes on algal hosts appeared before 1900, the most noteworthy being those of Winter (1887), and Jones (1898). Cotton (1908) described a pyrenomycete on Ascophyllum nodosum (L.) Le Jol. and summarized previous reports of ascomycetes found on algae. Reed (1902) collected two species, and Sutherland, in a series of papers (1914-1916), reported several alga-infesting pyrenomycetes. More recently, a number of ascomycetes occurring on algae have …

Geographic Variation Of The Deer-Mouse Peromyscus Maniculatus In New Mexico, Robert M. Hunt

Biology ETDs

Two subspecies of the deer-mouse Peromyscus manicluatus Wagner are presently recognized in New Mexico, P. M. rufinus Merriam and P. m. blandus Osgood. The present investigation supports the validity of these taxa.

A study of variation in 16 cranial and skin characters suggests that p. m. rufinus consists of a single interbreeding and relatively genetically uniform population in northern New Mexico but in southern New Mexico comprises isolated and genetically variable montane populations which seem to intergrade locally with a distinct lowland subspecies p. m. blandus, which occupies the desert plain of southern New Mexico.

Ua35/11 Perspectives On Contemporary Man, Wku Honors Program

WKU Administration Documents

Lectures delivered by WKU professors to the Freshman Colloquium in the fall of 1964. The Freshman Honors Colloquium is a special course open only to freshmen students whose test scores, on the battery of tests administered to all entering freshmen, fall in the upper 15% and who graduated in the top quarter of their high school graduating class. The book lists the participants in the colloquium.

Lectures:

• Bailey, Donald. What is a Man, According to a Biologist?
• Nash, Ronald. A Philosopher Looks at Man
• Tachau, Charles. A Theologian Looks at Man
• Watson, John. A Sociologist Looks at Man
• Shedd, Charles. …

Nutrition And Physiology Of Myxococcus Fulvus, John D. Friede

Biology ETDs

This thesis discusses the deterioration of existing adobe structures and the solutions available to retard deterioration.

1. The thesis presents information necessary for analyzing the existing structure.

2. The thesis discusses the causes of deterioration in order to stabilize against it.

3. It discusses and illustrates the various forms and visible signs of deterioration.

4. Finally, the thesis shows the reader various solutions that may be implemented to resolve and halt further deterioration of the adobe structure.

Two New Species Of Leafblight Fungi On Kalmia Latifolia, F. A. Wolf, A. R. Cavaliere

Biology Faculty Publications

The evergreen shrub, Kalmia latifolia L., commonly known as mountain laurel, calico bush, or sheep-kill, grows widely on rocky, acid soils in the eastern United States. Whether growing in its natural habit or in cultivation, mountain laurel appears to be equally subject to attack by fungi. The following account characterizes and discusses two of these fungi. One of them has not been described previously and additional observations have been made regarding the developmental morphology of the other one.

Both pathogens are Pyrenomycetes, one a Physalospora and the other a Diaporthe. Each produces a leafblight disease. Tiny brown discolorations on young …

A Comparative Study Of The Pollen Morphology Of The Solanaceae (Nightshade Family) Of Michigan, Ronald A. Kudile

Masters Theses

Introduction

The importance of pollen morphology has long been recognized and applied by the paleobotanist (Stone 1963). However, the recent use of pollen as a taxonomic character by systematists has simulated greater interest and research in the area of palynology (Graham 1963).

Several investigators have found pollen to be of significant taxonomic value while others have not. Xavier and Rogers (1963) were able to construct a key to the species of Linum by using characteristics of the pollen alone while Stern (1962) noted interspecific differences in the surface characteristics of pollen grains of all but two species of Dicentra.

This …

A Study Of The Fluctuation Of Some Blood Chemical Constituents In Relation To The Reproductive Cycle Of The Mallard Duck, Edward H. Decker

Masters Theses

Introduction

The purpose of this study was to determine normal levels of several blood chemical constituents (the mineral sodium, potassium and calcium and the organic substances serum cholesterol and serum albumin) for the female mallard duck (Anas platyrhynchos) and to examine their relationships as a possible index to reproductive development.

Much research has been done on the chemical composition of the avian egg and only those constituents which are of concern in this study will be discussed in detail. According to Romanoff (1949), studies of the chicken egg have shown that only a few mineral elements are present in relative …

Nocturnal Flights Of Triatoma Protracta (Uhler) As Indicated By Collections At Black Light Traps : (Hemiptera: Reduviidae: Triatominae), Robert D. Sjogren

Loma Linda University Electronic Theses, Dissertations & Projects

An investigation into the environmental and ethological factors relating to summer flights of Triatoma protracta protracta (Uhler) was performed utilizing black light traps of original design. Field observations were conducted on 51 evenings during the period June 1 to October 31, 1964. The traps were operated on a surveillance basis for the remainder of a twelve month period.

A total of 398 adult Triatoma protracta were collected in traps around a residence located in the chaparral covered foothills 10 miles east of Redlands, California. In addition to observations on field behavior, laboratory dissections were performed on each bug to obtain …

Evaluation Of A Process Of Expanding The Palpi Of Male Spiders For Taxonomic Purposes, William A. Shear

Biology ETDs

Characteristics of the complicated palpal organs of male spiders are widely used in taxonomy. In species with a simple and unspecialized palpus, a gross observation is unusually satisfactory, but in species in which the palpal organ is complicated and specialized, many spider taxonomists expand the palpus in order to observe the structural details. Because the process of expansion has never been critically examined, there is little uniformity in figures and descriptions of new species. In many publications on spider taxonomy figures are of expanded palpi; in other publications, figure are of unexpanded palpi. The present study is based on 29 …

Some Aspects Of The Natural History Of The Rock Squirrel, Citellus Variegatus, William Stalheim

Biology ETDs

A field study was conducted during the summer and early fall months of 1964 to collect information on aspects of the natural history of the rock squirrel, Citellus variegatus grammurus. The study was done in Embudo Canyon at the foot of the west slope of the Sandia Mountains (6500 feet elevation) east of Albuquerque, New Mexico. Twenty nine squirrels were live trapped from a study area 350 yards long by 120 yards wide. These squirrels were painted for visual identification, toe clipped for permanent identification, and released at the point of capture. Field observations yielded information on social behavior, food …