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Food Preferences Of The Cliff Chipmunk, Eutamias Dorsalis, In Northern Utah, E. B. Hart

Great Basin Naturalist

Food consumption by the cliff chipmunk, Eutamias dorsalis, was observed in northern Utah in the natural habitat during May, June, July of 1965, 1966. Plant food sources nearest the cliff den sites were used in early spring, and as the season progressed, chipmunks increased ranges proportionately with the positioning of specific maturing food plants. Total daily frequencies of plant use suggested the following plants as prime energy sources in order of observed usage: Tragopogon, Balsamorhiza, Poa, Lomatium, Bromus, Crepis, Amelanchier, Agoseris.

The Lethal Decline Of Mesquite On The Casa Grande National Monument, B. Ira Judd, James M. Laughlin, Herbert R. Guenther, Royal Handegarde

Great Basin Naturalist

No abstract provided.

Conifers Of The San Francisco Mountains, San Rafael Swell, And Roan Plateau, Ronald M. Lanner, Ronald Warnick

Great Basin Naturalist

No abstract provided.

Burrowing Habits Of Two Subspecies Of Dipodomys Merriami In California And Utah, Gerhard K. Bienek, Albert W. Grundmann

Great Basin Naturalist

No abstract provided.

End Matter, Vol. 31 No. 3

Great Basin Naturalist

No abstract provided.

The Algae Of Utah Lake, Part Ii, William J. Harding

Great Basin Naturalist

No abstract provided.

Additions To The Knowledge Of The Herpetofauna Of Oaxaca, Mexico, Hobart M. Smith

Great Basin Naturalist

No abstract provided.

Front Matter, Vol. 31 No. 3

Great Basin Naturalist

No abstract provided.

The Yellow Perch Fisheries Of Deer Creek Reservoir, Utah, With Notes On Parasitism By Ligula Intestinalis, Gale R. Lewellen, David A. White

Great Basin Naturalist

No abstract provided.

New Synonymy In American Bark Beetles (Scolytidae: Coleoptera), Stephen L. Wood

Great Basin Naturalist

No abstract provided.

End Matter, Vol. 14 No. 4

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

End Matter, Vol. 14 No. 3

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

Front Matter, Vol. 14 No. 3

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

A Flora From The Dakota Sandstone Formation (Cenomanian) Near Westwater, Grand County, Utah, Samuel R. Rushforth

Brigham Young University Science Bulletin, Biological Series

A Cretaceous (Cenomanian) flora from the Dakota Sandstone Formation near Westwater, Grand County, Utah contains an admixture of ferns and angiosperms. The ferns of this flora are representative of an older Jurassic-Wealden vegetational type, whereas the angiosperms are typical of the modern vegetational type. Species of Gleichenia and Matonidium and Astralopteris coloradica represent the dominant forms in this flora.

The Westwater flora contains fourteen genera including nineteen species and one variety. New species described from this flora include Asplenium dakotensis, Coniopteris westwaterensis and Ilex serrata.

Botanical And Physiographic Reconnaissance Of Northern British Columbia, Stanley L. Welsh, J. Keith Rigby

Brigham Young University Science Bulletin, Biological Series

The area of study is located in northern central British Columbia and includes the Sustut Basin and surrounding mountains. The physiography and geology of the region is described and the plant communities are enumerated. An annotated list of 205 species, 11 subspecies, and 35 varieties collected during the summer of 1969 is included.

Front Matter, Vol. 14 No. 4

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

End Matter, Vol. 15 No. 2

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

A List Of Arthropods Of Medical Importance Which Occur In Utah With A Review Of Arthropod-Borne Diseases Endemic In The State, Vernon J. Tipton, Robert C. Saunders

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

Front Matter, Vol. 15 No. 1

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

End Matter, Vol. 15 No. 1

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

Front Matter, Vol. 15 No. 2

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

Ticks Of Japan, Korea, And The Ryukyu Islands, Noboru Yamaguti, Vernon J. Tipton, Hugh L. Keegan, Seiichi Toshioka

Brigham Young University Science Bulletin, Biological Series

This publication is a revision of Ixodid Ticks of Japan, Korea, and the Ryukyu Islands by Keegan and Toshioka (1957). The tick fauna of these areas is represented by 36 species in the genera Argas, Ornithodoros, Amblyomma, Boophilus, Dermacentor, Haemaphysalis, Ixodes, and Rhipicephalus. Three species of the family Argasidae and 10 species of Ixodidae were not treated in the original edition. The additional information contained in this revision was derived from field collections and a thorough review of the literature. Keys are provided for the identification of genera and species. For each species we have given synonymy, a brief diagnosis, …

A Study Of Snail Hosts For Fasciola Hepatica In Utah Valley, Robert Michael Briem

Theses and Dissertations

The Meat Inspection Division of the Bureau of Animal Industry in 195 0 reported that 322,647 livers or 2. 4% of 13,112,802 cattle slaughtered under United States Federal Inspection were condemned due to liver fluke infections (Price, 1953). This would amount to an annual loss of 3 million dollars in livers alone considering each liver weighed 10 pounds and retailed 65 cents per pound. This figure could conceiv-ably double or triple if additional losses due to animal death, decreased milk production, poor economic utilization of feed or lower livestock prices were considered.

Comparative Anatomy And Histology Of The Mantle Cavity Of The Chitons (Polyplacophora) Mopalia Muscosa And Mopalia Lignosa, Theodore P. Winfield

Theses and Dissertations

The chiton Mopalia muscosa ranges from the open rocky coast to the bay environment, whereas the related chiton Mopalia lignosa is restricted to the outer rocky coast. The mantle cavity currents, anatomy and histology were investigated. Mucous gland cells of Mopalia muscosa are goblet type secretory cells. Their apparent ability to deliver their secretion rapidly together with having a short restitution period probably accounts for Mopalia muscosa having success at invading the bay environment. The mucous glands of Mopalia lignosa consist primarily of cells with medium to coarse secretory granules. These cells apparently are not as efficient at handling suspended …

Population Dynamics, Habitat Selection, And Partitioning Of Breeding Raptors In The Eastern Great Basin Of Utah, Dwight Glenn Smith

Theses and Dissertations

A comparative study of the breeding ecology of 12 raptor species was conducted in the eastern Great Basin from 1967-1970. The project was designed to determine the composition and densities, habitat selection, territoriality and predatory habits of raptorial birds in a semi-arid environment. All topics were analyzed comparatively, relating the requirements and activities of the 12 raptor species. Average yearly population densities of all species approximated 0.5 pairs per square mile. Predominant raptors were the Ferruginous Hawk and Great Horned Owl. The productivity of these and the other large raptors correlated closely with the abundance of their main food source, …

Space Usage By The Small Mammal, Dipodomys Microps (Merriam), Barney William Cornaby

Theses and Dissertations

The concept of home range is an important biological phenomenon and has received considerable attention. In applying the concept to mammals Burt (1943) defined it as, "that area traversed by the individual in its normal activities of food getting, mating, and caring for young. " Later, Hayne (1949) defined a circular home range with concentric zones of variable utilization around a center of activity. Both workers emphasized the need to know the behavior patterns of the animals within their respective home ranges. The statistical evaluation initiated by Hayne (1949) has been refined to provide increasingly precise probability estimates of an …

The Thermal Decomposition Of 2,2'-Azoisobutane, Mervin Dewain Atwood

Theses and Dissertations

Nitrogen, isobutane, isobutylene and 2,2,3,3-tetramethylbutane are the only products found in the thermal decomposition of 2,2'-azoisobutane. They are the results of the direct free radical dimerization and disproportionation. Ratio of the rate constants of disproportionation to dimerization was found to be 1.9 at 268°C and 4.5% azobutane in helium. This compared with Blackham and Eatough's value of 1.4 at 243°C and 3.6 at 290°C with 4% azobutane in helium. The ratio of the disproportionation to dimerization increased with an increase in temperature. A change in contact time affected the ratio at lower reaction temperatures but had little effect on it …

An Investigation Of Some Free Radicals.|Ni.|Pdecomposition Of Nitrosyl Disulfonate Ion In Polar Non-Aqueous Solvents.|Nii.|Preaction Between 2,2-Diphenyl -1- Picryl Hydrazyl And Nitrosyl Disulfonate Ion Free Radicals, Janan Mary Hayes

Theses and Dissertations

Part I reports the stud y of the decomposition of nitrosyl disulfonate ion in DMSO, acetonitrile, and dichloromethane. A multi-step mechanism involving sulfite ion, sulfite ion radical, and nitrosyl monosulfonate radical as intermediates is proposed. The products of the decomposition are nitrosonium ion, hydroxylamine disulfonate ion, and hydroxylamine trisulfonate ion. A competitive chain reaction was observed when the decomposition occurred in DMSO. The chain reaction was insignificant in carefully dried acetonitrile and dichloromethane. Part II reports the study of the reaction between 2,2-diphenyl-1-picryl hydrazyl (DPPH) and nitrosyl disulfonate ion. Product analysis and kinetic data obtained from stopped-flow procedures suggest that …

Autoradiographic Studies Of The Distribution Of Serotonin In The Rat Brain, Brent D. Wagstaff

Theses and Dissertations

Serotonin (5-hydroxytryptamine, 5-HT), considered to be a synaptic transmitter within the central nervous system, has been shown to be localized mainly in the paleocortex of the brain. Others have shown disturbances of normal 5-HT metabolism to be associated with mental illness and disease. Attempts to inject tritium labelled 5-HT into cerebrospinal fluid of the rat brain for anatomical localization studies were·made. The following observations were noted, (1) there exists a perivascular space in which fluid flows and distribution is relatively uninhibited as compared to subarachnoid space, (2) the labelled 5-HT penetration of brain tissue parenchyma is restricted and radioactivity is …

Predatory Activity Of Chrysopa Carnea Stephens In The Integrated Control Of Mite Pests In Utah Apple Orchards, Ray R. Bingham

Theses and Dissertations

Mite pest problems in Utah apple orchards became generally serious about 1944, when DDT was first used extensively to control Codling moths, Carpocapsa pomonella (Linn.) (Jorgensen, 1967}. Since then several investigators (Pickett et al., 1946; Lord, 1949; Pickett, 1955; Lord, Herbert, and MacPhee, 1958) have examined the influence of various spray programs on apple orchard fauna, while still others (Clancy and Pollard, 1952; Morgan, Anderson, and Swales, 1958; Oat-man and Legner, 1962) have conducted related studies with widely used broad spectrum pesticides on apple mites and their predators. All seem to lend credence to the theory that mite pest problems …