Life Sciences Commons^™

Coexistence In Unisexual-Bisexual Species Complexes Of Poeciliopsis (Pisces: Poeciliidae), William S. Moore, Frances E. Mckay

Biological Sciences Faculty Research Publications

All-female forms of Poeciliopsis rely on males of closely related bisexual species for sperm. The natural habitat of Poeciliopsis in Sonora, Mexico, consists of a variety of small ponds connected by intermittent watercourses. Optimal areas, containing mixed female aggregates, are defended by territorial males. Social structure in natural populations very closely resembles that of laboratory experiments, wherein subordinant males show reduced mate discrimination and inseminate unisexuals.

An equation relating male density to unisexual inseminations is used in a computer simulation model of a population. A stable equilibrium is inherent in unisexual-bisexual species complexes but the level of equilibrium is affected …

Vocalizations Of The Townsend Chipmunk (Eutamias Townsendii), Greig Michael Warner

Dissertations and Theses

This study describes and analyzes the vocalizations of the Townsend chipmunk (Eutamias townsendii) in Oregon. Tape recordings of calls were collected primarily from Forest Park in Portland (Oregon) during 1970 and 1971, and sonograms of these recordings were produced. Findings were compared with those of Brand (1970) who investigated E. townsendii vocalizations in California. The prominent calls in the vocal repertoire of townsendii are the quist, the quirt, and the chipper. These calls all appear to be warning calls. The quist note is a a chevron-shaped (A) figure representing a sound which begins at a low frequency (1-2 KC), sharply …

Serological Studies On Twelve Species Of Candida, Etta W. Fraser

Theses & Dissertations

The studies on the serology of Candida emphasize the fact that their antigenic structure is complicated. The results of the agglutination, precipitin reactions and complement fixation tests are confusing, contradictory and, so far, too impractical for the clinical laboratory. This study is an attempt to clarify the situation by using the newer techniques of the Ouchterlogy agar gel-diffusion precipitin method, (18) the hemolysin method, as well as the usual agglutination procedure. Since the precipitin method appears of possible value in diagnosis, this will be the main emphasis in this work.

A Biosystematic Study Of Cacalia Atriplicifolia L. With Emphasis On Its Life History, Tso Pen Chang

Masters Theses

No abstract provided.

An Investigation Of The Behavior Of Citellus Townsendii Townsendii (Bachman) In Central Washington, Mark Roy Fuller

All Master's Theses

This study of the behavior of Citellus townsendii townsendii was based on field observations of animals at their northern most distribution. The squirrels' seasonal activity and behavioral repertoire, when considered with environmental parameters, suggest important adaptations for survival. The animals were in torpor from about July to February. Activity generally occurred during the midmorning hours, allowing them to avoid temperature extremes. Quantitative analysis of behavioral observations indicated that most activities occurred in a non-random order.

The Relation Of Temperature To Calcification In Montipora Verrucosa, Walter W. Cox

Loma Linda University Electronic Theses, Dissertations & Projects

A method for quantitatively comparing calcification rates in coral was used to find an optimum growth temperature for Montipora verrueosa. This method is based on the uptake of the radioactive isotope ca⁴⁵. By supplying the water the corals are growing i·n with a known amount of radioactivity and comparing this with the activity of the coral samples, a rate of Ca⁴⁵C0₃ incorporation can be determined per unit of time.

Various tests show that inorganic exchange does not appear to be a significant factor in interpretation of the results obtained. The edge of a colony calcifies …

An Extension Of The Cochran Q Test, Soo-Young Cho

Loma Linda University Electronic Theses, Dissertations & Projects

The familiar x ² test is ordinarily used to compare percentage distributions of categorical data for two or more independent samples. A more accurate com parison of the percentages is sometimes obtained if the samples consist of matched individuals. The NcNemar test is generally used when comparing only two related samples. Where there are three or more samples the Cochran Q test is used. Both of these tests apply only to the case of dichotomized responses. This thesis extends the Cochran Q test to the case where the responses are multinomial. A generalized statistic corresponding to Cochran's result is obtained. …

Effects Of The Cle Elum Reservoir On The Ephemeroptera (Mayflies) Of The Cle Elum River, David Bruce Ainsworth

All Master's Theses

The purpose of this study was to determine the physical and chemical effects of the Cle Elum Reservoir on the Cle Elum River and to evaluate these effects in respect to the Ephemeroptera of the Cle Elum River. Specific objectives were: (1) To determine the effects of the reservoir on current velocity, volume of flow, turbidity, and temperature. (2) To determine the effects of the reservoir on alkalinity, hardness, dissolved oxygen, and pH. (3) To evaluate the effects of the reservoir on the Ephemeroptera of the Cle Elum River.

The Riparian Vegetation Of Swauk Creek, Edward L. Schneider

All Master's Theses

An investigation was made to document the structure and composition of the flora along Swauk Creek, a riparian transect into Central Washington's Cascade Range. Distributions of the major species are discussed and a key has been constructed to facilitate identification of the riparian associations.

Participation Of The Renin-Angiotensin System In The Control Of Vascular Capacity During Hemorrhagic Hypotension, James Robert Powell

Masters Theses

Introduction

Review of the Literature

Severe hypotension has long been held as being one of the most potent stimuli for activation·of the mechanisms responsible for circulatory homeostasis. It has been accepted that the most immediate response to hypotension involves activation of the autonomic nervous system causing an increased vascular tone. In addition to various neurogenic mechanisms that function to cause an increase in vascular tone, several humeral mechanisms have also been implicated.

Rocha e Silva and Rosenberg (1969) described the release of vasopressin (ADH) from the posterior lobe of the pituitary in response to hemorrhage in the dog. They postulated …

Change In Cysteine And Total Basic Amino Acid Contents In Regenerating Planaria, Lynn Gunnison

Masters Theses

No abstract provided.

The Ecology And Behavior Of The Burrowing Owl In Central New Mexico, Dennis J. Martin

Biology ETDs

A population of Burrowing Owls (Speotyto cunicularia) in Central New Mexico was studied during 1970 and 1971. Individuals of this population nest in Rock Squirrel (Spermophilus variegatus) burrows in an arroyo and railway cut-through. Physical aspects of burrows used by these owls were measured and comparisons were made with other nesting colonies. Sixty-seven Burrowing Owls were banded to facilitate investigations of behavior, population dynamics and migration. Burrowing Owl vocalizations were examined with the aid of a Sonagraph. Statements are made as to their physical description, etiology, function, ontogeny, relationship to other calls and associated behavioral displays. Descriptions of the owl's …

The Effect Of Dimethylsulfoxide On The Infectivity Of The T1-Coliphage, Grergory Kyle Reeder

Morehead State Theses and Dissertations

A thesis presented to the faculty of the School of Sciences and Mathematics at Morehead State University in partial fulfillment of the requirements for the Degree of Master of Science in Biology by Gregory Kyle Reeder on July 22, 1971.

Characteristics Of A Bacteriophage Isolated For Pseudomonas Tabaci, Linda R. Nichols

Morehead State Theses and Dissertations

A thesis presented to the faculty of the School of Sciences and Mathematics at Morehead State University in partial fulfillment of the requirements for the Degree of Master of Science in Biology by Linda R. Nichols on July 19, 1971.

Biomechanical Relationships In Astragalus And Oxytropis (Fabaceae), Stephan L. Albrecht

Biology ETDs

The results of a biomechanical study of the generic relationships of Astragalus and Oxytropis are presented.

Dried plant materials was hydrolyzed in 2 N hydrocholoric acid, the hydrolysates were extracted with n-amyl alchol, and chromatographed in two dimenstions using thin layer chromatography (TLC). The patterns and the R_F values of the "spots" separated were recorded and analysed.

The flavonoid patterns for all the plant organs studied were similar and no definite relationships between the flavonoid patterns and morphological characters could be ascertained. The flavonoid patterns exhibited by the members of both taxa indicate that the present means of morphological …

The Embryonic Viability Of The Constant Estrus Mouse, Claudia M. Hicks

Morehead State Theses and Dissertations

A thesis presented to the faculty of the School of Sciences and Mathematics at Morehead State University in partial fulfillment of the requirements for the Degree of Master of Science in Biology by Claudia M. Hicks on July 8, 1971.

Intestinal Absorption And Lipolysis Of Safflower Oil And Other Unsaturated Vegetable Oils In Rats, Robert Leslie Gregory

Master's Theses

The intestinal lipolysis and absorption of safflower, corn, peanut, olive, cottonseed and soybean oils were studied in the rat. Oils and pancreatic lipase were injected into the rat jejunum and ileum (ligated in situ), and the amount of esterified fatty acids absorbed and free fatty acids present in the gut after 3 hours was determined.

Safflower oil was absorbed significantly less than the other oils. There was no significant difference between the absorption rates of the other oils. When the oils were subjected to porcine pancreatic lipase in vitro, safflower oil also exhibited the lowest rate of hydrolysis.

The rates …

A Comparative Study Of Solubilized Proteins From Phycomyces Blakesleeannus By Disc Electrophoresis, Douglas Burton Gillespie

Master's Theses

Mycelial, sporangiophore, and zygospore solubilized protein fractions o Phycomyces blakesleeanus Burgeff were separated on polyacrylamide gels and stained. Protein patterns of 8 and 13 day old mycelia of the + strain were identical as were the patterns of the same two age groups of the - strain. The + mycelia exhibited 9 protein bands while the - strain contained 10 bands. Seven bands were homologous to both strains. Sporangio­phore samples of 5 and 10 day old cultures from + and - strains contained 4 protein bands homologous to all 4 samples. The protein band at 9 mm was also …

The Induced Differentiation Of Mouse Ectoderm To Epidermis By Growth On Freeze-Thawed Dermis, Albert Joseph Banes

Master's Theses

Previous investigators have grown or maintained adult or embryonic skin in tissue culture and on the chorioallantoic membrane (CAM) of chickens. These studies have revealed two important factors involved in culturing skin: (1) the presence of an inducer which originates in the dermis and affects the phenotype of epithelial cells; and (2) the influence of the physical surface of the substrate on which epidermis is cultured.

The current investigation presents evidence that ectoderm from the limb buds of 10 to 12 day-old mouse embryos can form an epidermis when combined with dermis killed by alternate freezing and thawing, and cultured …

Phytoplankton Composition At Lake Drummond In The Dismal Swamp, Virginia, William Howard Poore Jr.

Biological Sciences Theses & Dissertations

Abstract unavailable.

Investigations Of Biochemical Relationships In New Mexico Ribes (Saxifragaceae), John G. Mexal

Biology ETDs

The classification of Ribes based on morphological characters is hampered by interspecific similarities. Nine species found in New Mexico were studied chemotaxonomically on the basis of flavonoid variability and content. A soxhlet extraction apparatus was used to extract the flavonoids. Methanolic extracts of both fresh and preserved leaves were studied using thin-layer chromatography. The results supported the current subgeneric breakdown of Ribes into Ribesia and Grossularia. Ribesia contains between two and four anthocyanins, while Grossularia contains no detectable anthocyanins. Evidence presented in this paper indicates that R. aureum Pursh (Ribesia) and R. inerme Rydb. (Grossularia) are misplaced subgenerically. Biochemically, at …

Effects Of Insulin, Sodium And D-Glucose On Amino Acid Absorption In The Intestine Of Rats, Andre-Gerard Craan

Dissertations and Theses

Amino acid absorption across rat intestine in vitro was inhibited or stimulated by insulin depending on the hormone serosal concentration.

The absence of sodium ions from the incubating solution resulted in a significant decrease of L-alanine absorption. However, L-alanine was enhanced in a sodium-free medium by the addition of insulin on the serosal side of the intestine.

A sizable decrease in L-alanine and L-lysine absorption was produced by introduction of D-glucose (0.2 % and 2 %) in the Krebs-Ringer's incubating buffer. Nevertheless, the presence of D-glucose did not prevent the stimulatory effect of insulin on amino acid absorption.

Induction Of Cytokinin-Independent Tobacco Tissues By Substituted Fluorenes, Thomas W. Bednar, Elfriede M. Linsmaier-Bednar

Biological Sciences Faculty Research and Publications

Two morphactins and three aminofluorenes initiated the formation of compact tissue nodules in hormone-dependent tobacco callus cultures. These nodules, upon subculture, behaved like partially transformed plant tumors. They grew on cytokinin-free media, while control callus and nonnodule tissue still required an exogenous cytokinin source. The data indicate that substituted fluorenes, including carcinogenic aminofluorenes, can cause a neoplastic growth response in cultured tobacco tissues. Of particular interest in this study is the finding that a directed and heritable cellular change is induced in tobacco tissue in which a specific (the endogenous cytokinin) biosynthetic system is regularly and persistently activated.

Misc. Notes Regarding Hal L. Black Collection, Hal L. Black

Division of Mammals - Field Notes and Catalogs

No abstract provided.

The Response Of The Peripheral Blood Lymphocyte Of The Beagle Dog To Inhaled 90 [Gamma] Fused Clay And To Acute In-Vivo And In-Vitro 60 Co Exposure, Charles H. Hewitt Jr.

Biology ETDs

The cytogenetic response of Beagle dog peripheral blood lymphocytes to inhaled insoluble yttrium-90 in fused clay was characterized and compared to that produced by whole-blood and whole-body irradiation with cobalt-60. Compartmental models were developed with digital and analog computers to define canine lymphocyte kinetics. From these data, the dose to the peripheral blood lymphocytes by 90y fused clay was estimated. Blood lymphocytes were cultured with phytohemagglutinin and incubated for 72 hr. Metaphase chromosomes were collected with colchicine. No significant chromosomal damage was observed to result from initial lung burdens less than 4. 8 mCi of 90y fused clay. Whole blood …

The Effects Of Rickettsial Parasitism On Glucose Metabolism In The Chicken Embryo, Royce M. Brockett

Biology ETDs

The effects of Rickettsia typhi, Rickettsia rickettsii, and Coxiella burnetii infections on glucose metabolism in the chicken embryo were investigated. Cell-free extracts were prepared from infected and uninfected embryos and incubated with glucose-1-¹⁴C, glucose-6-¹⁴C, or gluconate- 6-¹⁴C. The results indicated that in typhus infected embryos a slight shift in glucose metabolism toward greater utilization of the hexose monophosphate pathway took place. Preliminary data obtained from Rocky Mountain spotted fever infected embryos suggested that infection with this organism has similar effect. Results obtained for Q fever infected embryos were not conclusive, but indicated that Q …

A Survey Of The Airborne Fungi In The Albuquerque, New Mexico Area, Mark S. Sifuentes

Biology ETDs

A twelve-month survey of the atmospheric airborne fungal spores, utilizing quantitative air sampling combined with the culture-plate technique, was conducted in the Albuquerque, New Mexico area. Two permanent locations, one in the Heights and the other in the Valley, were used to compare spore types and incidence. The predominant genera caught in the Heights, in order of their frequency, were Cladosporium, Alternaria, Aspergillus, Mycelia Sterilia, Penicillium, Phoma, and Stemplylium. The predominant genera caught in the Valley, in order of their frequency, were Cladosporium, Alternaria, Aspergillus, Mycelia Sterilia, Phoma, Penicillium, and Stemplylium. Variations in number of predominating fungal spores of the …

Survey Of 36 Staphylococcus Aureus Strains For Possible Production Of A Coagulase-Destroying Factor, Roger L. Gardner

Biology ETDs

The possible production of a coagulase-destroying factor (CDF) by 36 strains of Staphylococcus aureus was investigated. Some related characteristics of coagulases produced by these strains were also studied.

Coagulase used for these experiments was prepared by removing cells from the broth of 5-hour cultures. Preparations assayed for CDF activity were made from cell-free 72-hour culture broth. Inactivation was assayed by observ­ing changes in clotting times of 5-hour broth that was diluted with an equal volume of 72-hour broth. Clotting times were determined at intervals during a 72-hour incubation period. These tests failed to show CDF activity from any of the …

The Interspecific Relationship Between Panagrellus Redivivoides And Drosophila Melanogaster, Robert Thomas Morgan

Biology ETDs

Panagrellus redivivoides (T. Goodey, 1943) T. Goodey, 1945 was found associated with the "Albuquerque-wild" strain of Drosophila melanogaster. The nematode species was redescribed, noting differences from published description in body length, postvulval sac structure, and distal bifurcation of the gubernaculum. The nematode-fly association was maintained by periodic fly subculturing. However, the nematodes are nonparasitic and can be sustained independently of the flies, without statistically significant differences in body measurements, at 22 Con standard cornmeal-agar medium seeded with live yeast which serves as food for the microbivorous nematodes. Statistically significant differences in body measurements were noted with nematodes feeding on excess …

Observation Of A Compensatory Mechanism In The Rat During Carbon Tetrachloride Exposure, Mable H. Orndorff

Biology ETDs

Physical, chemical, and physiological responses of rats, after carbon tetrachloride inhalation (400 ppm) and comparable injection exposure, are presented and discussed. Data collected during the last four of five biweekly exposures illustrate some of the acute effects of CC1₄ exposure superimposed on a pattern of chronic response. Fat deposition is increased as indicated by the rapid and substantial weight gains through the fourth exposure week. Final liver-body weight ratios are high in the CC1₄ - treated animals. The experimental rats excrete more urea after week 3, whereas they have stable creatinine excretion until the fifth week. Urea-creatinine ratios …