Biology Commons^™

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 …

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.

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 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 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 …

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 …

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 …

It's A Mollusk, Dorothea S. Franzen

Honorees for Teaching Excellence

No abstract provided.

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 …

A Systematic Study Of The Genus Castilleja In New Mexico, Mary Carol Olsen

Biology ETDs

A critical field and herbarium study in Castilleja provides sufficient evidence for recognizing 20 species, 19 perennials and one annual of this genus in New Mexico. Castilleja species are found in a variety of habitats throughout New Mexico and flower from early April to late October. The yellow-bracted taxa are limited to the high mountains of the northern part of the state; others are more generally distributed. One taxon apparently is endemic to the White and Sacramento Mountains. One variety, described from the Charleston Mountains of Nevada, is now reported from the Chuska Mountains of New Mexico also. The scarlet-bracted …

Cesium And Sodium Metabolism By The New Mexico Whiptail Lizard, Margaret Flory

Biology ETDs

The effect of temperature on electrolyte metabolism in the lizard Cnemidophorus perplexus was studied. The biological half-time and tissue distribution were the aspects of cesium and sodium metabolism noted. Increased temperature results in a higher metabolic rate. Measurements were made of the extent oxygen consumption increased with raised temperature in C. perplexus. Radioisotopes sodium-22 and cesium-137 were injected intraperitoneally into lizards kept at several environmental temperatures. Whole body radioactivity counts were taken twice daily on the live animals to determine the retention curves. At 50% retention and 80% retention lizards were sacrificed and tissue radioactivity counts taken to determine electrolyte …

The Effects Of Ambient Pressure On The Biological Response Of Mice To Air Blast., Edward G. Damon

Biology ETDs

The extensive use of high-energy fuels and the development of a wide variety of high explosives have led to increased accidental and wartime exposure of men to detonations. furthermore, with the advent of the development of nuclear weapons, the need for a better under­standing of the biological effects of blast has been greatly increased.

Some Movements Of Black-Tailed Jackrabbits In Northern Utah, Donald H. Rusch

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This work describes the extent and pattern of some black-tailed jackrabbit (Lepus californicus) movements and areas of activity in northern Utah and their relationship to sex and age, and season of the year.

Black-tailed jackrabbits are the most common lagomorphs in much of the western United States, particularly in that vegetational association described by McDougal (1908) as the sagebrush desert. Furthermore, Adams and Adams (1959) have suggested a correlation between sagebrush (Artemisia tridentata) incidence and jackrabbit density.

Farmers often regard this species as a liability because of its depredations on alfalfa (Medicago sativa), crested …

Some Morphological And Histological Effects Of The Poison Of Lophopodella Carteri (Hyatt) On Young Ambystoma Opacum (Gravenhorst) And Carassius Auratus (Linnaeus), Eric Justin Collins

Master's Theses

Larvae of the marbled salamander, Ambystoma onscum, and the goldfish, Carassius auratus, were subjected to poi­ soning by homogenates of Lonhopodella carteri. Stock homogenates were prepared by grinding specimens of frozen L. carteri in a rotary blender and adding distilled water to give a 20 percent concentration (wt./vol.); the stock was used to prepare working solutions.

Homogenates from bryozoans collected in 1964 were approximately twice as poisonous as those from the 1963 col­ lection. It ls possible that chemical changes during stor­ age and bacterial action prior to freezing caused deterioration of the poisonous principle in the material from 1963. …

The Origin Of The Grassland Amphibian, Reptilian, And Mammalian Faunas Of The San Juan-Chaco River Drainage, Arthur H. Harris

Biology ETDs

Grasslands of the San Juan-Chaco Drainage are separated from grasslands of other New Mexican drainages by plant associations characteristic of higher altitudes. Connection with other grasslands in the Colorado Drainage is restricted to a narrow corridor in the northwest.

Grassland habitat of the present type was absent from the basin during the last major Pleistocene pluvial as were those amphibians, reptiles, and mammals closely associated with this habitat. An effort has been made to determine which of these vertebrates invaded the area from the northwest in post-pluvial time and which have entered the basin via relatively low-lying areas along the …

Parental Care Of The Eastern Kingbird And The Great Crested Flycatcher, Elmer L. Morehouse

Masters Theses

Introduction

The objective of this investigation was to obtain information regarding parental care in the Eastern Kingbird, Tyrannus tyrannus (L.), especially during post-hatching phases of the nesting cycle. In addition, some comparative observations were made on the Great Crested Flycatcher, Myiarchus crinitus (L.).

Ultraviolet Induction Properties Of Salmonella Potsdam Bacteriophages, Berney Roy Neufeld

Loma Linda University Electronic Theses, Dissertations & Projects

Three lysogenic strains of Salmonella potsdam were studied to determine whether or not they were inducible by ultraviolet light under certain conditions. The strains examined were SP3, SP4, and SP9. SP3 and SP4 contained a single prophage each and SP9 contained two prophages P9a and P9c. The ultraviolet light sensitivities of each of these lysogenic strains and the indicator strain SP2 were also examined.

All three lysogenic strains were found to be inducible. SP3 was induced an average of 3.59% and SP4 an average of 2.21%. The difference between the induction percentages of SP3 and SP4 was not statistically significant. …