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Some Effects Of Accumulated Radium On The Productivity Of Algae, Joseph W. Angelovic

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Ionizing radiation from natural occurring radionuclides and cosmic rays has always been a part of man's environment, but at such low levels as to have had virtually no effect. However, with the advent of the atomic age and the advancement of nuclear technology, background activity has measurably increased all over the world. Fallout from nuclear weapons testing, wastes from nuclear reactors, and wastes from the milling of radioactive ores have all contributed to this increase. Due to this increase, many ecosystems and their individual components are now subjected to radiation levels as high as a million times natural background. What …

Canada Goose Production And Population Stability, Ogden Bay Waterfowl Management Area, Utah, Norman H. Dey

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Since the development of Ogden Bay Waterfowl Management Area in 1937, the Canada goose (Branta canadesis moffitti) population increased to a peak in 1949 and then declined slightly. Nelson (1954) noted that the decrease in population was probably due to either a change in habitat or increased hunting pressure. In recent years, direct band returns have indicated a high mortality rate in the population. This project was initiated to determine the relative stability of the Canada goose population and to measure, as closely as possible, the effect of a high mortality rate upon the nesting population.

To estimate …

Production And Waterfowl Utilization Of Sago Pondweed (Potamogeton Pectinatus) On The Marshes Of The Bear River In Northern Utah, Robert Leon Craner

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

According to MCAtee (1918), Mabbott (1920), Martin and Uhler (1939) and other leading waterfowl food habit authorities, sago pondweed (Potamogeton pectinatus) is one of the most important waterfowl food plants in the United States. The seeds, vegetative leaves and stems, and the tubers of this plant are apparently sought by waterfowl.

Canada Goose Production And Population Stability, Ogden Bay Waterfowl Management Area, Utah, Norman H. Dey

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Since the development of Ogden Bay Waterfowl Management Area in 1937, the Canada goose (Branta canadesis moffitti) population increased to a peak in 1949 and then declined slightly. Nelson (1954) noted that the decrease in population was probably due to either a change in habitat or increased hunting pressure. In recent years, direct band returns have indicated a high mortality rate in the population. This project was initiated to determine the relative stability of the Canada goose population and to measure, as closely as possible, the effect of a high mortality rate upon the nesting population.

Geographic Variation In New Mexican Horned Larks, David M. Niles

Biology ETDs

Horned Larks, Eremophila alpestris, were collected from eight stations in New Mexico in order to investigate geographic variation in size of certain skeletal elements and in back coloration of males. Size of many mensural characters appears to increase clinically to the north; but, the effects of latitude (presumably an example of Bergmann’s Role) are often modified by local ecological conditions, notably altitude. Those characters not demonstrating this are, in general, disassociated from the main metabolic mass of the birds. Females seem more affected by the above than males. Back coloration was found to vary in much the same manner as …

Measurements Of Swimming Speeds Of Yellowfin Tuna And Wahoo, Vladimir Walters, Harry L. Fierstine

Biological Sciences

No abstract provided.

Another Pacific Record Of The Black Swift Off Mexico, O. Marcus Buchanan, Harry L. Fierstine

Biological Sciences

No abstract provided.

A Preliminary Survey Of The Algae Of Cheyenne Bottoms In Kansas, Henry J. Mcfarland, Edward A. Brazda, Ben H. Mcfarland

Fort Hays Studies Series

The purpose of this study was to classify and describe some of the algae of Cheyenne Bottoms Wildlife Refuge, Barton County, Kansas. The general geographic location is northeast of Great Bend, Kansas. A natural basin has been converted by dikes into a group of pools. The study was made over a two year period starting in May, 1960.

Dry-Plains Conservation: An Activity Or Experimental Method Of Teaching Soil And Water Conservation In Southwestern Dry-Plains Natural Science Classrooms., David W. Pierson

Fort Hays Studies Series

This paper is an attempt to provide teachers in the dry-plains regions with certain concepts and techniques believed to be of value in assisting students to develop an understanding of the uniqueness of their environment. While most of the activities, experiments, and demonstrations were first organized for a biology class, many of them should be suitable for use in other classes which involve the natural sciences.

Euphthiracaroidea Of California Sequoia Litter: With A Reclassification Of The Families And Genera Of The World (Acarina: Oribatei), Neil A. Walker

Fort Hays Studies Series

The specimens on which this study is based were collected in litter under both the coast redwood, Sequoia sempervirens Endlicher, and Sierra redwood, S. gigantea Decaisne. The results of this study are the taxonomic discrimination of the speicies of each redwood region.

Photoperiodism And Other Factors Affecting The Germination Of Statoblasts Of Lophopodella Carteri (Hyatt), Elizabeth Ann Bergin

Master's Theses

Sample groups of the statoblasts of Lophopodella carteri (Hyatt) were pretreated by drying, cooling, freezing, immersion in water and combinations of these conditions. Then, they were subjected to 24-hour dark and 8, 12, and 24 hour light photoperiods . A control was maintained under natural dark-light (day-night) conditions. The analysis of variance and Newman-Keuls tests were used to analyze the data. The cool wet pretreatment gave the best germination for the statoblasts. For the photoperiods, statoblasts in 8 and 12 hour light periods and the control had the highest germination rate.

When sodium hypochlorite was used to surface-sterilize the stato­ …

Histological And Cytological Changes In The Small Intestine Of Hyla Versicolor Le Conte During Metamorphosis, Henry B. Robinson

Master's Theses

The object or the present study was to determine the histological and cytological changes that occur, during metamorphosis, in the small intestine of versicolor Le Conte. It was felt that such a study would clarify and amplify earlier observations.

Yanchep National Park, Clee Francis Howard Jenkins

Journal of the Department of Agriculture, Western Australia, Series 4

YANCHEP National Park lies just over 30 miles north of Perth, and was gazetted as an A Class Reserve in 1905.

It covers more than 6,000 acres.

An Analysis Of Cytological Screening For Cervical Cancer (A 7 Year Survey), Phoebe E. Rutherford

Masters Theses

Introduction

It is the purpose of this study to review the cervical cancers, stained by Papanicolaou (1956:3-6) method, at Borgess Hospital, Kalamazoo, Michigan, from September, 1956 to September 1963.

A previous analysis of the cytological screening at Borgess Hospital to ascertain the per coat accuracy in cervical diagnoses, was made by the investigator in June, 1961. This study, covering a four year period, draw attention to the fact that the patients with invasive carcinoma were in a much older age group than any other reported series studies. This fact plus the rapid recognition, by physicians and patients, of the value …

Using Sordaria Fimicola For Teaching Genetic Segregation, Crossing Over, And Probability, Roger Green Isaacson

Dissertations and Theses @ UNI

Since the late 1950's, American education has been undergoing a critical evaluation and review. This review has brought about some changes in emphasis and an upgrading in science curricula. The American Institute of Biological Sciences, supported by the National Science Foundation, accepted major responsibility for the field of biology and established the Biological Science Curriculum Study (BSCS). H. Bentley Glass., Chairman of BSCS, states: "The aim of the Biological Science Curriculum Study is to place biological knowledge in its fullest modem perspective. To accomplish this aim, a program of research, writing, testing, and evaluation was inaugurated.

Respiration Studies Of Rattus Rattus And Citellus Lateralis Brain Tissue Slices At 20 And 37 C, Sonja Hyduke

Biology ETDs

The purpose of this study is to investigate the extent of temperature and substrate dependence of brain tissue metabolism in hibernating animals. Possible cellular adaptations to low temperatures may indicate mechanisms possessed by the hibernator to maintain neural functions at low temperature. Oxygen consumption of brain tissue slices from homeothermic rats and active and hibernating ground squirrels (Citellus lateralis) was to describe the effect of temperature on rates of utilization of several substrates.

Ecology Of Summer Aquatic Invertebrate Populations In A Marsh Area Of Utah Lake, David A. White

Theses and Dissertations

Mud Lake marsh lies east of Utah Lake between the cities of Provo and Springville in Utah County. Since 1936 it has become a polluted, odiferous, silted area. A study was conducted on the aquatic invertebrates during the summer of 1962 (June 19 to September 20). An .01 meter2 bottom sampler was used at 30 random stations. Each station was sampled once a week. Water depth, mud, water and air temperatures were taken at each station. Dissolved oxygen (Winkler method) and ion resistance (Wheatstone bridge) were taken each day. The aquatic invertebrate community consisted of benthic (Diptera, Oligochaeta, Nematoda), interphashic …

The Effect Of Renal Artery Constriction On The Course Of Pregnancy In The Laboratory Rat, Julie Jones Medlin

Masters Theses

Introduction

Goldblatt and his associates (1934) were the first to show that persistent arterial hypertension could be produced by renal ischemia. They produced renal ischemia by two procedures which involved reduction of the blood supply to one or both kidneys by means of adjustable silver clamps and removal of the non-ischemic kidney where only one kidney was made ischemic. In one procedure the clamps were placed directly on the renal arteries. The second procedure produced renal ischemia indirectly by constriction of the abdominal aorta above and below the site of the origin of both renal arteries (1939). The adjustable silver …

Behavioral Interactions In A Fixed Aggregation Of Bobwhites, Jack Pierce

Masters Theses

Introduction

Many observations have been made on the behavior in the field of the bobwhite (Colinus virginianus) and of other gallinaceous birds. Stoddard (1950) has described in some detail various aspects of bobwhite behavior. Stokes (1963) conducted a laboratory study on the agonistic and sexual behavior of the chukar partridge. No behavioral studies, to the writer's knowledge, however, have been conducted on bobwhites under controlled environmental conditions. The birds used in the present study were housed in individual cages and were arranged in an artificially fixed aggregation (Fig. 1). The birds were maintained in this condition through the experimental period …

An Investigation Of The Influence Of The Suprapharyngeal Ganglion Upon Oxygen Consumption Of Resting Lumbrious Terrestris, William E. Elzinga

Masters Theses

Introduction

Because cephalization and centralization of the earthworm are more pronounced than in less complex forms, it is a relatively simple operation to remove a portion of the central nervous system to investigate its functions. However, the extripation of various parts of the central nervous system of the earthworm has been the subject of only a few research papers. It is the purpose of this study to investigate the influence of extripation of the suprapharyngeal ganglia on the oxygen uptake of the resting earthworm, Lumbricus terrestris.

Of the studies concerned with the influence of extirpation of some parts of the …

Microenvironmental Conditions Of The Day Resting Places Of Cottontail Rabbits, Orin Gelderloos

Masters Theses

This investigation was concerned with the microenvironment of the daytime resting places of cottontail rabbits (Sylvilagus floridanus) in southwestern Michigan. Many studies have been made of the habitat (Friley, 1955), cover (Hendrickson, 1938; Leopold, 1942; Linduska, 1947), food (Trippensee, 1938; Dice, 1945), and home ranges (Haugen, 1942) of cottontail rabbits. The purpose of this investigation was to search for possible correlations between various physical factors and the daytime activity and resting places of cottontails.

Comparative Ecology Of Three Species Of New Mexican Garter Snakes (Genus Thamnophis), Eugene D. Fleharty

Biology ETDs

The ecological literature states that closely related species that occur in the same ecological area undergo competition until one out-competes the other (or until each becomes restricted to a very specific niche). Darwin (1859) stated that species of the same or related genera which had nearly the same structure and habits undergo severe competition. More recently this view has been restated in what is known as "Gause's Law" (Gause 1934; Gilbert, Reynoldson, and Hobart 1952). Bagenal (1951) emphasized the difficulties in determining what is meant by the same habitat or the same community. Actually, as Bagenal (Ibid.) pointed out, because …

Measurement Of Cardiac Output In Man, At Rest And During Exercise, By An Indirect Fick Co2 Method, Orlando Thomas Garza

Biology ETDs

In the field of medical science it is necessary to understand the life processes; their normal levels, responses and mechanisms before interpretation of changes caused by disease or stress can be made with any degree of accuracy. This paper deals with a method of obtaining cardiac output values, and is not meant to be a discussion of the highly involved mechanics controlling the cardiac output., but a cursory review of these mechanics is warranted.

Ectoparasites Of Rabbits Collected In Grant County, New Mexico, Paul Henry Rodriguez

Biology ETDs

Nine obligate ectoparasites were taken from 28 Sylvilagus auduboni and 14 Lepus californicus collected in Grant County, New Mexico, from April 15, 1962, to December 24, 1962.

Cediopsylla inaeqaulis inaequalis and Hoplosyllus glacialis affinis, which may be important in the epidemiology of plague, were found to be primarily restricted to S. auduboni. Echidnophaga gallinacea, which is usually found on birds, Pulex irritans, and Meringis dipodomys, which is common on wild rodents, proved to be incidental ectoparasites of this species of rabbit. Thirteen H. glacialis affinis and five E. gallinacea were taken from six L. californicus.

The continental rabbit …

Attempt To Determine The Pattern Of Chromosomal Inheritance In The Intermediate Iris, Theodore Kellogg

Senior Scholar Papers

Intermediate iris containing 44 chromosomes have a low rate of fertility. This paper is an attempt to determine the reasons for this low fertility through a study of the chromosomal inhertiance of two intermediate iris that have been successfully hybridized. There are no literary records showing that the results of crossing two chromosome intermediate iris, so most of this paper is a report of lab work.

Factors Influencing Elk Distribution On Willow Creek Summer Range, Utah, Duane Eldro Jeffery

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study is aimed at gaining a better understanding of the factors responsible for the distribution of elk on summer range, and an analysis of characteristics of preferred habitat. Such knowledge should prove of value in elk management, both in better managing elk herds themselves, and in coordinating their needs with those of other land uses.

Some Aspects Of The Relationship Between Two North American Whiptail Lizards, John W. Wright

Biology ETDs

The present investigation was undertaken in an attempt to clarify further the taxonomic relationship between Cnemidophorus octolineatus (=C. inornatus) Baird and C. Velox Springer. At various times these two have been treated as species, subspecies, or synonyms, and have been re-described at one time or another as new species or subspecies.

Systematic Revisions Of The Genera Pseudoficimia, Gyalopion, And Ficimia (Serpentes: Colubridae)., Laurence M. Hardy

Biology ETDs

Originally, this systematic problem was concerned with the genera Ficimia Gray, Gyalopion Cope, fseudoficimia Bocourt, Conopsis Gunther, am Toluca Kennicott.

The five genera represent a problem that could include intergeneric studies of Ficimia, Gyalopion, and Pseudoficima on the one hand and Toluca and Conopsis on the other, interspecific studies of each genus, and, in some well-represented forms, intraspecific studies based on large samples from single localities.

Comparative Morphology Of The Two Species Of Grasshopper Mice, Genus Onychomys, In New Mexico, Gerald L. Traut

Biology ETDs

Inasmuch as individual specimens of the cricetid genus Onychomys Baird are frequently difficult to identify to species even using the commonly used key characters, a total of 376 grasshopper mice was examined to determine how and to what extent the two species, O. leucogaster and O. torridus, differ from each other in New Mexico.

To this end, 31 measurements (cranial, skeletal, and hair) and ratios were ascertained for each individual. The nearly 12,000 figures were summarized by constructing 161 modified Dice-Lerass diagrams.

A New Northern Record Of The Smooth Stargazer, Harry L. Fierstine, Robert G. Werner

Biological Sciences

No abstract provided.