Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Brigham Young University

Discipline
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 10141 - 10170 of 10983

Full-Text Articles in Entire DC Network

New Species Of Oribatids From Western Colorado (Acarina: Cryptostigmata, Suctobelbidae), Harold G. Higgins, Tyler A. Woolley Dec 1976

New Species Of Oribatids From Western Colorado (Acarina: Cryptostigmata, Suctobelbidae), Harold G. Higgins, Tyler A. Woolley

Great Basin Naturalist

A new species of Suctobelba, S. tumulata, and a new genus and species, Parisuctobelba septenia, are described from collections of oribatids taken in coal strip-mining spoil banks near Hayden, Colorado. The new species are compared with members of the family from North America and Europe. The new genus is differentiated by a smooth, narrowed sensillum and seven pairs of genital setae. Taxonomic and ecological data are also discussed.

Go to article

An Annotated List Of The Aquatic Insects Of Southeastern Idaho. Part I. Plecoptera, Robert L. Newell, G. W. Minshall Dec 1976

An Annotated List Of The Aquatic Insects Of Southeastern Idaho. Part I. Plecoptera, Robert L. Newell, G. W. Minshall

Great Basin Naturalist

All of the known records of Plecoptera occurring in southeastern Idaho have been compiled in this list, which includes a number of new records obtained by the authors. The study region includes all of the streams in the Snake River and Great Basin drainages of the state found east of the Wood River and south of the Continental Divide and covers about one-third of the state's 216,413 km2 area. A total of 71 species were found to occur in the area. These are listed by family and the specific habitats in which each is known to occur are noted.

Go to article

Front Matter, Vol. 36 No. 4 Dec 1976

Front Matter, Vol. 36 No. 4

Great Basin Naturalist

No abstract provided.

Go to article

Helminth Parasites Of Cats And Dogs From Central Utah, Thomas W. Sawyer, Lari M. Cowgill, Ferron L. Andersen Dec 1976

Helminth Parasites Of Cats And Dogs From Central Utah, Thomas W. Sawyer, Lari M. Cowgill, Ferron L. Andersen

Great Basin Naturalist

A survey of the helminth parasites of 100 stray cats and 50 dogs was conducted. Each host was euthanized, and the internal organs were excised and examined for parasites. Helminths identified from cats included the tapeworms Dipylidium caninum and Hydatigera taeniaformis, and the nematodes Physaloptera sp. and Toxocara mystax. Two species of coccidia, Isospora felis and I. rivolta, and one ectoparasitic mite, Cheyletiella parasitivorax, were also recovered from cats during sugar flotation of the feces. Helminths identified from dogs included the tapeworms D. caninum, Taenia hydatigena, T. krabbei, and T. pisiformis, and the nematodes Filaroides milksi, Toxascaris leonina, and Toxocara …

Go to article

End Matter, Vol. 36 No. 4 Dec 1976

End Matter, Vol. 36 No. 4

Great Basin Naturalist

No abstract provided.

Go to article

Description Of A New Species Of Phyllotrox Infesting Seeds Of Acer Grandidentatum, With New Synonymy And A Note On Euclyptus (Coleoptera: Curculionidae: Erirhininae), Rose Ella Warner Dec 1976

Description Of A New Species Of Phyllotrox Infesting Seeds Of Acer Grandidentatum, With New Synonymy And A Note On Euclyptus (Coleoptera: Curculionidae: Erirhininae), Rose Ella Warner

Great Basin Naturalist

A new species of weevil, Phyllotrox canyonaceris Warner, is described, new synonomy, and distribution records of eight species of the genus Phyllotrox in North America are given.

Go to article

Birds Of Utah, C. Lynn Hayward, Clarence Cottam, Angus M. Woodbury, Herbert H. Frost Dec 1976

Birds Of Utah, C. Lynn Hayward, Clarence Cottam, Angus M. Woodbury, Herbert H. Frost

Great Basin Naturalist Memoirs

No abstract provided.

Go to article

Effect Of Altitude On The Peripheral Degradation Of Thyroxine In The Uinta Ground Squirrel (Citellus Armatus), Stuart K. Ware Dec 1976

Effect Of Altitude On The Peripheral Degradation Of Thyroxine In The Uinta Ground Squirrel (Citellus Armatus), Stuart K. Ware

Theses and Dissertations

Various methods were employed to detect changes in the peripheral degradation of thyroxine (T4) in adult Uinta ground squirrels (Citellus armatus) collected at two different altitudes (5400 and 9000 feet.) Plasma half-life of injected T4-125I (tl/2) was significantly decreased with altitude, as was T4-125I distribution space (TDS) and T4 degradation and secretion rate (TSR). In vitro deiodination of T4-125I by heart homogenates was not affected, while urinary excretion of thyroxine derived iodide was increased at high altitude 44-70 hours post-injection. Both total and free serum T4 concentrations were reduced at high altitude, although not significantly. The cause of the reduced …

Go to article

Population Characterization And Feeding Behavior Of A Subtidal Neogastropod, Amphissa Columbiana, Bruce C. Stone Dec 1976

Population Characterization And Feeding Behavior Of A Subtidal Neogastropod, Amphissa Columbiana, Bruce C. Stone

Theses and Dissertations

The neogastropod Amphissa columbiana is found abundantly in subtidal areas of the San Juan Archipelago. Two populations studied were composed of distinct age classes of sexually immature and mature specimens. Reproduction appears to take place in the fall by snails at least two years old. Amphissa is a chemoreceptive scavenger that usually feeds on carrion and on dead and injured animals. Feeding behavior is mediated by chemical attractants from dead and traumatized tissue. An unusual feeding association is formed where Amphissa congregate around feeding predators to share their meals. A specific defense mechanism is deployed by Amphissa especially in response …

Go to article

Potential Diets For Carp Production, Rex Carlton Infanger Dec 1976

Potential Diets For Carp Production, Rex Carlton Infanger

Theses and Dissertations

The objective of this study was to determine the feasibility of raising carp on pig manure and coli, Brassica campestris. The use of pig feces as a source of fish food has been questioned by researchers (Hickling 1968). Coli was selected for dietary intake by fish since it is used for human consumption by the Indians of Guatemala. Commercial fish food (Silver Cup) was used for a control diet. These diets were both combined and used as a single source of food.

Go to article

Spatial And Temporal Partitioning Between Sympatric Rodents: Zapus And Peromyscus, Emma Bernice Speer Dec 1976

Spatial And Temporal Partitioning Between Sympatric Rodents: Zapus And Peromyscus, Emma Bernice Speer

Theses and Dissertations

Partitioning space and time by seemingly sympatric rodents, Zapus princeps and Peromyscus maniculatus, were examined as possible mechanisms allowing coexistence. The two populations were studied in Central Utah with an electrically monitored grid. Spatial separation of individuals and the populations minimized confrontations and created local allopatric distribtuions. Temporal partitioning was not used as a mechanism to allow coexistence and was apparently independent of spatial partitioning. The Peromyscus population was composed primarily of males which may have been due to less favorable habitat and/or presence of Zapus. The data show that Peromyscus tend to avoid Zapus, possibly due to deleterious aggressive …

Go to article

Changing Views And Status Of Women: Implications Within The Church And The Professions, J. Joel Moss, Mayne Oviatt, Jan L. Tyler, Victor B. Cline Oct 1976

Changing Views And Status Of Women: Implications Within The Church And The Professions, J. Joel Moss, Mayne Oviatt, Jan L. Tyler, Victor B. Cline

Issues in Religion and Psychotherapy

No abstract provided.

Go to article

Food Production, People, And The Future, Sylvan H. Wittwer Oct 1976

Food Production, People, And The Future, Sylvan H. Wittwer

BYU Studies

No abstract provided.

Go to article

Front Matter, Vol. 36 No. 3 Sep 1976

Front Matter, Vol. 36 No. 3

Great Basin Naturalist

No abstract provided.

Go to article

A Revision Of Eriogonum (Polygonaceae) Subgenus Pterogonum, William J. Hess, James L. Reveal Sep 1976

A Revision Of Eriogonum (Polygonaceae) Subgenus Pterogonum, William J. Hess, James L. Reveal

Great Basin Naturalist

This revision discusses the 10 species of Eriogonum assigned to the subgenus Pterogonum. Six of the species are essentially restricted to northern Mexico; two additional species, E. hemipterum and E. nealleyi, are found primarily in Texas; and the remaining two, E. hieracifolium and E. alatum, are the most widespread species of the subgenus being found mainly in the United States and just barely entering Mexico. The subgenus is characterized by the broad, often winged or ribbed achenes, and the generally erect habit of the stems of these perennial herbs. Three new species, E. fimbriatum, E. viscanum, and E. clivosum, are …

Go to article

End Matter, Vol. 36 No. 3 Sep 1976

End Matter, Vol. 36 No. 3

Great Basin Naturalist

No abstract provided.

Go to article

The Stoneflies (Plecoptera) Of Louisiana, Kenneth W. Stewart, Bill P. Stark, Thomas G. Higgins Sep 1976

The Stoneflies (Plecoptera) Of Louisiana, Kenneth W. Stewart, Bill P. Stark, Thomas G. Higgins

Great Basin Naturalist

A list of species, illustrated keys to nymphs and adults, distribution, and biological notes are presented for 24 stonefly species occurring in Louisiana. Leuctra moha?, Pteronarcys dorsata, Helopicus subvarians, Paragnetina kansensis, Paragnetina immarginata, Phasganophora capitata, and Acroneuria evoluta are recorded only from the florida parishes east of the Mississippi River. Isoperla Coushatta, Isoperla mohri, Neoperla clymene, an undescribed Neoperla (Sp. A), Paragnetina fumosa, Acroneuria abnormis, Acroneuria arenosa, Perlinella drymo, and Perlesta placida are found both east and west of the Mississippi; and Allocapnia granulata, Allocapnia malverna, Amphinemoura nigritta, and three species of Taeniopteryx have been recorded only west of the …

Go to article

Defense Mechanism And Feeding Behavior Of Pteraster Tesselatus Ives (Echinodermata, Asteroidea), James Milton Nance Aug 1976

Defense Mechanism And Feeding Behavior Of Pteraster Tesselatus Ives (Echinodermata, Asteroidea), James Milton Nance

Theses and Dissertations

Pteraster tesselatus is noted for its external secretion of massive amounts of mucus. The mucus repels most animals, and fouls their respiratory physiology, if contact is maintained for any length of time. It provides protection essentially 100% of the time from Solaster dawsoni and Pycnopodia helianthoides, the only local stars that attempt to feed on Pteraster. The mucus, which is a simple mucopolysaccride, is produced in three different types of unicellular glands located in the epidermal tissues along the supradorsal membrane. Pores along the lateral walls of the ambulacral grooves provide fresh sea water for the dermal branchiae contained in …

Go to article

Esr Study Of Free Radicals In Irradiated Single Crystals Of Potassium Hydroxylamine Disulfonate, B. J. Wilson, Robert W. Holmberg Aug 1976

Esr Study Of Free Radicals In Irradiated Single Crystals Of Potassium Hydroxylamine Disulfonate, B. J. Wilson, Robert W. Holmberg

Faculty Publications

Two free radicals formed when single crystals of potassium hydroxylamine disulfonate are irradiated with gamma rays at 77degrees K were studied by ESR. The ESR spectra result from a predominant center (radical A) exhibiting large 14N and 1H hyperfine splittings and from lesser amounts of Fremy's radical [O-dotN(SO3)2-2]. The g and hyperfine tensors of these radicals have been evaluated and are discussed. Radical A, whose identity remains in doubt, may be regarded as the precursor to Fremy's radical; on warming its lines decay and those of Fremy's radical are formed. Lines from radical A decrease in strength and those of …

Go to article

The Cryptogamic Flora Of Desert Soil Crusts In Southern Utah, Davic C. Anderson Aug 1976

The Cryptogamic Flora Of Desert Soil Crusts In Southern Utah, Davic C. Anderson

Theses and Dissertations

The cryptogamic flora of several soil crusts of arid regions in southern Utah was determined. Twenty-two lichens, Six mosses and fifty-four algal species were identified and their relative abundance estimated.

Go to article

Endoparasites Of Cats In Two Central Utah Communities, Thomas W. Sawyer Jul 1976

Endoparasites Of Cats In Two Central Utah Communities, Thomas W. Sawyer

Theses and Dissertations

A survey of the endoparasites of 100 stray cats in central Utah was conducted. Each cat was euthanized, and the entire alimentary tract, gall bladder, bile duct, heart, respiratory and excretory systems were excised and examined for endoparasites. Fecal samples were examined by a sugar flotation technique. Parasites identified and number of cats infected were: Isospora felis 5; I. rivolta, 4; Dipylidium caninum, 1; Hydatigera taeniaformis, 10; Toxocara mystax, 43; and Physaloptera sp., 2. One ectoparasite, Cheyletiella parasitivorax, was identified in the feces of 4 cats. Dipylidium caninum and T. mystax are known to cause accidental infection in humans and …

Go to article

Mormon Bibliography 1975, Chad J. Flake Jul 1976

Mormon Bibliography 1975, Chad J. Flake

BYU Studies

No abstract provided.

Go to article

Late Pleistocene–Early Holocene History Of Coniferous Woodlands In The Lucerne Valley Region, Mohave Desert, California, Thomas Jackson King Jr. Jun 1976

Late Pleistocene–Early Holocene History Of Coniferous Woodlands In The Lucerne Valley Region, Mohave Desert, California, Thomas Jackson King Jr.

Great Basin Naturalist

The composition of four radiocarbon-dated, late Pleistocene woodrat middens is reported and analyzed. A date of 11,850 ± 550 BP records the first reported macrofossil occurrence in this region of late Pleistocene Pinus monophylla-Juniperus osteosperma woodlands. A 7,800 ± 350 BP date documents the most recent J. osteosperma woodlands in this presently coniferless desert area, while a date of 12,100 ± 400 BP is the oldest record of juniper woodlands among the four middens. Other juniper and creosote bush desert flora radiocarbon dates along with six pollen profiles were obtained. The research suggests that as recently as 7,800 BP this …

Go to article

Front Matter, Vol. 36 No. 2 Jun 1976

Front Matter, Vol. 36 No. 2

Great Basin Naturalist

No abstract provided.

Go to article

End Matter, Vol. 36 No. 2 Jun 1976

End Matter, Vol. 36 No. 2

Great Basin Naturalist

No abstract provided.

Go to article

Aquatic And Semiaquatic Heteroptera Of The Grand Canyon (Insecta: Hemiptera), John T. Polhemus, Martin S. Polhemus Jun 1976

Aquatic And Semiaquatic Heteroptera Of The Grand Canyon (Insecta: Hemiptera), John T. Polhemus, Martin S. Polhemus

Great Basin Naturalist

The aquatic and semiaquatic Hemiptera from 12 localities in Marble Canyon and Grand Canyon are reported, along with those from 1 locality in the Escalante Canyon. Fourteen species are recorded and compared to the water-bug fauna of the southwestern United States and western Mexico. Ochterus rotundus n. sp. is described from the Grand Canyon and the mountains of western Mexico.

Go to article

Three New Species Of Nearctic Isoperla (Plecoptera), Stanley W. Szczytko, Kenneth W. Stewart Jun 1976

Three New Species Of Nearctic Isoperla (Plecoptera), Stanley W. Szczytko, Kenneth W. Stewart

Great Basin Naturalist

Nymphs and adults of three new species of Isoperla are described from reared material. I. sagittata is known only from southeastern Texas, I. Coushatta has been collected in East Texas and Oklahoma, and I. jewetti occurs in the Basin and Range Mountains of West Texas. The male aedeagii, female subgenital plates, and nymphal mouthparts are diagnostic in all three species.

Go to article

Front Matter, Vol. 20 No. 4 Jun 1976

Front Matter, Vol. 20 No. 4

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

Go to article

End Matter, Vol. 20 No. 4 Jun 1976

End Matter, Vol. 20 No. 4

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

Go to article

The Streblid Batflies Of Venezuela (Diptera: Streblidae), Rupert L. Wenzel Jun 1976

The Streblid Batflies Of Venezuela (Diptera: Streblidae), Rupert L. Wenzel

Brigham Young University Science Bulletin, Biological Series

This study was based on more than 36,000 Venezuelan Streblidae representing ca. 115 species and species complexes in 22 genera, taken from more than 6,800 hats of 95 species. Two new genera are proposed and 45 new species are described. The morphology is briefly discussed and terminology is revised. Collection data are given for each species, together with discussions on variability and host relationships when pertinent. Keys to genera and species arc included, as well as illustrations of most species. Noctiliostrebla dubia (Rudow) and the male of Parastrebla handleyi Wenzel are characterized, and relationships of Speiseria are discussed. New Taxa– …

Go to article

First Prev Next Last