Digital Commons Network^™

The Identification Of A Germination Factor For Basidiospores Of Psilocybe Mutans, Neal K. Van Alfen

Theses and Dissertations

Basidiospores of the Basidiomycete Psilocybe mutans have been found to germinate only in the presence of water extracts of animal dung. The chemical nature of the factor present in the dung that induces germination is not known, nor has it ever been isolated· Experiments showed that extracts of bile salts cause the basidiospores to germinate, indicating that since bile salts are found in dung, they may be the factor which stimulates the spores to germinate. Investigations of the properties of the factor in dung show that the factor has solubility properties that are similar to those of the bile acids. …

Inhibition Of Asexual Reproduction In Planaria, Lewis Hafen Leavitt

Theses and Dissertations

Asexual reproduction in the decapitated planaria, Dugesia dorotocephala, is inhibited by an extract of homogenized heads of the same or closely-related species. Decapitated planaria allowed to regenerate have reproduced asexually over 80% of the time, while those that have been cultured in a suspension of head homogenate have had asexual reproduction inhibited to less than 10%. The substance that inhibits asexual reproduction is heat labile. It requires a concentration of 2.0 heads/ml that contains .13 mg protein/ml to effectively inhibit asexual reproduction. A similar concentration of head homogenate from the related planaria, Dugesia tigrina, also contains the inhibitory substance. Head …

Syntheses Via Modifications Of The Knorr-Paal Procedure :|Ba. Derivatives Of 2,6-Dioxa-10-Azatricyclo[5.2.1.0[Superscript 4,10]]Decane ; B. Highly Sterically Crowded 1,2,5-Trialkylpyrroles And Pyrrolidines, Weldron Severin Burnham

Theses and Dissertations

Earlier work in these laboratories on the heterotricyclic system 2,6-dioxa-10-azatricyclo[5.2.1.04,10]-decane, formed from 1,4-diketones and 2-amino-1,3-propanediols by a product-water-azeotroping procedure, was extended with the synthesis of analogous compounds, e.g., the 1,4,7-triethyl-, 1,7-dimethyl-4-isopropyl-1,7-diethyl-4-isopropyl-, 1,7-dimethyl-3- and 4-phenyl- compounds. The 1,7-dimethyl heterotricycle, the kinetically-controlled product, was accompanied by the thermodynamically-controlled product, 2-(2,5-dimethyl-1-pyrryl)-1,3-propanediol. The 1,7-diethyl heterotricycle was also accompanied by the isomeric pyrrole as were the 1,7-dimethyl-3- and 4-phenyl compounds. A scheme postulating a common intermediate is presented. The interesting analogous compounds, 1,7-dimethyl-2-oxa-6-thia-10-azatricyclo[5.2.1.04,10]decane, 1,4,7-trimethyl-2,6-dioxa-11-azatricyclo[5.3.1.04,11]undecane and 11-hydroxymethyl- and 11-methyl-9,13-dioxa-14- azatetracyclo[6.5.1.02,7 011,14]tetradeca-2,4,6-triene were also prepared. The syntheses in good yields of a considerable number of moderately to …

A Revision Of Cryptantha Subgenus Oreocarya, Larry Charles Higgins

Theses and Dissertations

This study is a taxonomic revision of Cryptantha subgenus Oreocarya (Boraginaceae), together with descriptions of species, synonyms, distribution maps, and discussions. The present treatment recognizes fifty-seven species and fourteen varieties, all separated by means of a comprehensive key. A history of the group, along with a discussion of the distribution, ecology, and phylogeny is presented. As a basis for the comparison of taxa much of the research has been concentrated on morphological variation in herbarium specimens. Particular attention has been directed to a study of pubescence types, branching patterns, flowers, calyces, and the fruit. The herbarium research has been correlated …

Social Structure Of Small Mammal Populations At The National Reactor Testing Station, Idaho, R. Lynn Speth

Theses and Dissertations

This investigation examined the social structure of four species of small mammals (Perognathus parvus (Peale), Reithrodontomys megalotis (Baird), Peromyscus maniculatus (Wagner), and Dipodomys ordi (Woodhouse) at the National Reactor Testing Station (NRTS) in Idaho. An understanding of the social structure provides ecological clues concerning the integration of interactions, reproduction, distributions, densities, and diel activities for not only one animal and species, but for a complex of animals interacting with each other.

The Fisheries Of Deer Creek Reservoir, Utah, With Special Emphasis On The Yellow Perch (Perca Flavescens Mitchill), Gale R. Lewellen

Theses and Dissertations

This thesis is concerned with the fisheries of Deer Creek Reservoir, Wasatch County, Utah, with special emphasis on the yellow perch. The study period was from May 13 to November 24, 1968. Objectives included the determination of size, age, and food habits of the yellow perch. Parasitic occurrences in the perch population by Ligula intestinalis were also recorded as well as the utilization of the perch by the fishermen. Observations on other species of fish including an analysis of rainbow trout stocking programs were also objectives of this thesis. Data was gathered by means of creel census and fish collection …

Ecology Of The Pika (Ochotona Princeps Uinta) In The Uinta Mountains, Utah, Richard D. Bates

Theses and Dissertations

In North America, pikas (mammal genus Ochotona) are distributed throughout the western mountain ranges where they are mostly restricted to higher elevation talus slides. There are two species in North America, the Alaskan or Collared Pika (Ochotona collaris Nelson) and the American Pika (Ochotona princeps Richardson). The former is found north of 58 degrees north latitude and has no subspeciation, while the latter occurs south of 58 degrees latitude and consists of 35 subspecies isolated on various mountain ranges (Hall and Kelson 1959). In Utah there are nine subspecies, which are mostly distributed in the Wasatch range that runs northeast …

A Study Of Aquatic Fungi In Powell's Slough, Chao-Chih Hsiao

Theses and Dissertations

Aquatic fungi in-Powell's Slough were.studied in 1967 & 1968. Collections were made and water temperature, oxygen content & pH values were measured at weekly intervals. For collections, wire baskets containing substrata were submerged in water for one month. After collecting, substrata were brought to the laboratory. Identification was based on the keys of Sparrow, 1960. Aquatic fungi identified included seven orders, nine families, fifteen genera, and thirty species, from thirty-three collections of fifteen types of substrata. The substrata used in this study were: (i) fruits: apples, rose hips, plums, pears, haws; (ii) twigs: poplar, weeping willow, river birch, weeping white …

A Revision Of The Hedysarum Boreale Complex, Terry Edwin Northstrom

Theses and Dissertations

The Hedysarum boreale complex consists of all North American Members of the genus Hedysarum which possess free wing auricles, sub-equal calyx teeth, hidden leaflet veins, and wingless loment articles. One species, two subspecies, and three varieties are recognized. The traditional methods of comparative morphology are employed in delimiting species in the herbarium, but pertinent data from field work are also included. The somatic chromosome number was determined for all taxa, and was found in all cases to be 16. Distribution maps, illustrations, and graphical comparisons of taxa are included.

Distribution, Food And Life History Of Tiger Salamanders In Devils Lake, North Dakota, Gary L. Buchli

Theses and Dissertations

Food, growth, distribution, migration, metamorphosis, neoteny, and breeding habits of Ambystoma tigrinum diaboli Dunn were studied in Devils Lake, North Dakota. Salamanders I vere captured in gill and frame nets, and growth and metamorphosis were followed on specimens caged in the lake, lood habits were ascertained from stomach analyses and migrating adults were caught in gill nets and trench-barrier t raps.

Salamander adults breed readily in Devils Lake and display a sex ratio of 13 females to 10 males. The population appears to consist of larvae, neotenous gilled forms, aid adults. Adults leave the lake in fall and return in …

The Development Of The Juvenile Instructor Under George Q. Cannon And Its Functions In Latter-Day Saint Religious Education, Lawrence R. Flake

Theses and Dissertations

The success of the Juvenile Instructor magazine, called the Instructor since 1929, owes much to the vision and foresight of its great founder, George Quale Cannon. From a small, crude, four-page paper, first published in 1866, the Juvenile Instructor has developed into a far-reaching and attractive publication, touching the lives of countless thousands in 1969. It has proved to be a great implement of religious education to the Latter-day Saint people and fulfilled four important functions in its early years when Elder Cannon was its editor. It served as the official organ of the Sunday Schools, as a voice of …

Some Hematological Values Of Eleven Species Of Amphibians And Reptiles, Dennis J. Gemmell

Theses and Dissertations

No abstract provided.

An Autoradiographic Study Of Tritiated-Thymidine Uptake In The Mitral Valve Of Prenatal And Postnatal Rats, Peter D. Johnson

Theses and Dissertations

No abstract provided.

Effect Of Ethanol Ingestion On Liver Mitochondrial And Microsomal Phosphatidyl Choline Fractions, Mary F. Miller

Theses and Dissertations

No abstract provided.

Sodium Localization And Electrophysiological Studies Within The Cardiac Muscle Of Ciona Intestinalis While Under The Influence Of Digitalis And Epinephrine, Kenneth Robert Keefner

Theses and Dissertations

No abstract provided.

The Effects Of Continuous And Partial Reinforcement During Auditory Discrimination Training For The Mentally Retarded, Richard M. Johnson

Theses and Dissertations

No abstract provided.

The Growth Rate Of The Tooth Germ In Newly-Born Rats Injected With Cortisone Acetate, Tetsuo Nakamoto

Theses and Dissertations

No abstract provided.

Some Cytochemical Aspects Of The Red Pulp Sinus Lining Cells Of The Normal And Stimulated Rabbit Spleen., Michael Jens Snodgrass

Theses and Dissertations

No abstract provided.

Tolerance Of Mice To Increased Oxygen And Nitrogen Pressures : Design Of A Dual High Pressure Chamber, Robert Eugene Thompson

Theses and Dissertations

No abstract provided.

A Study Of Immunochemical Properties Of Calf Thymus Histones, Dou-Mei Wang

Theses and Dissertations

No abstract provided.

The Effect Of Cold Adaption On Liver Glycogen In The Rat, Donald R. Davis

Theses and Dissertations

No abstract provided.

A Comparison Of The Late Wisconsinan Molluscan Fauna Of The Missouri Coteau District (North Dakota) With A Modern Alaskan Analogue, Samuel J. Tuthill

Theses and Dissertations

Study of forty fossiliferous sites in late Wisconsinan sediments from the Missouri Coteau district in central North Dakota has defined the molluscan fauna of the period of geologic time between 12,000 and 9,000 C14 years before the present. The fauna includes twenty-eight taxa of nonmarine gastropods and bivalves and is dominated by branchiates. The modern molluscan fauna of the Missouri Coteau district in North Dakota lacks four species which were resident in the late Wisconsinan and contains no unionids, one additional aquatic species, and is strongly dominated by pulmonate gastropods.

The geology of the Missouri Coteau has been interpreted as …

Assay Of Murine Sarcoma Virus (Moloney) Viremia Using Tissue Culture Methods, Timothy M. Dolan

Theses and Dissertations

No abstract provided.

Revegetation Of Some North Dakota Lignite Strip-Mine Spoil Banks, Kenneth B. Switzer

Theses and Dissertations

No abstract provided.

A Karyotypic Analysis Of Two Subspecies Of Clethrionomys Gapperi Vigors, André G. FréChette

Theses and Dissertations

No abstract provided.

An Electron Microscopic Study On The Effect Of Lithium Carbonate On The Rat Kidney, Andrew P. Evan

Theses and Dissertations

No abstract provided.

The Incidence Of Deviant Language Development In First Grade Children With Infantile Speech Patterns, Leila M. Olson

Theses and Dissertations

No abstract provided.

Use Of Fluorescent Antibody As A Quantitative Assay For Purple Sulfur Organisms In Their Natural Environment, Karen L. Hanson

Theses and Dissertations

No abstract provided.

Composition And Concentration Of Sewage Lagoon Plankton As Affected By Seasonal Conditions And Lagoon Operation, Neil Holzman

Theses and Dissertations

No abstract provided.

A Model System For The Deacylation Of Acylenzymes, Raymond Shih-Chao Sun

Theses and Dissertations

No abstract provided.