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Distribution Of Entocytheridae (Crustacea: Ostracoda) In The Northern Prairies Of North America And Reports Of Opportunistic Clitellate Annelids On Crayfish Hosts, Bronwyn W. Williams, Kathryn L. Williams, Stuart R. Gelder, Heather C. Proctor Aug 2011

Distribution Of Entocytheridae (Crustacea: Ostracoda) In The Northern Prairies Of North America And Reports Of Opportunistic Clitellate Annelids On Crayfish Hosts, Bronwyn W. Williams, Kathryn L. Williams, Stuart R. Gelder, Heather C. Proctor

Western North American Naturalist

Northern crayfish, Orconectes virilis (Hagen, 1870), were collected from 89 sites across Alberta, Saskatchewan, Manitoba, Montana, North Dakota, and Minnesota. The entocytherid ostracod Thermastrocythere riojai (Hoff, 1943) was found on O. virilis at 45 of the 89 sites, distributed primarily in the eastern and southern portion of the study area. These observations of T. riojai greatly extend the known range of the species. The widespread distribution of T. riojai suggests that the dearth of entocytherid records from other parts of Canada is a result of nontargeted sampling rather than true absence. In addition, we report on observations of 3 noteworthy …

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End Matter, Vol. 71 No. 2 Aug 2011

End Matter, Vol. 71 No. 2

Western North American Naturalist

No abstract provided.

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Front Matter, Vol. 71 No. 2 Aug 2011

Front Matter, Vol. 71 No. 2

Western North American Naturalist

No abstract provided.

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Comparative Ecology Of Sarcobatus Baileyi And Sarcobatus Vermiculatus In Eastern California, Rebecca E. Drenovsky, Alynn M. Martin, Molly R. Falasco, James H. Richards Aug 2011

Comparative Ecology Of Sarcobatus Baileyi And Sarcobatus Vermiculatus In Eastern California, Rebecca E. Drenovsky, Alynn M. Martin, Molly R. Falasco, James H. Richards

Western North American Naturalist

Greasewood (Sarcobatus) is a succulent-leaved, halophytic shrub of North American origin. The genus comprises 2 species: Sarcobatus baileyi and Sarcobatus vermiculatus.Sarcobatus vermiculatus is common throughout much of western North America, but S. baileyi is much more limited in distribution and was previously thought to be endemic to Nevada. Here we document and describe a S. baileyi population in eastern California, comparing its morphology and ecology to an adjacent S. vermiculatus population. Morphologically, S. baileyi is smaller in stature but produces larger seeds; however, fewer S. baileyi seeds germinated and survived a 20-day laboratory incubation compared to seeds …

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Natural Polyploidization Within Tetraploid And Hexaploid Populations Of The Desert Shrub Atriplex Confertifolia, Stewart C. Sanderson Aug 2011

Natural Polyploidization Within Tetraploid And Hexaploid Populations Of The Desert Shrub Atriplex Confertifolia, Stewart C. Sanderson

Western North American Naturalist

Shadscale (Atriplex confertifolia) is a wind-pollinated dioecious shrub of western North America with an unusual development of apparently autoploid races, showing all even ploidy levels from 2x to 12x (base x = 9). Of these, tetraploid races are the most frequently encountered, with octoploids the next most common, and hexaploids being much less common. In this study, the occurrence of neopolyploid individuals within tetraploid and hexaploid populations of shadscale was examined at natural sites in order to investigate the pathways by which octoploids may be formed and to find a possible explanation for the predominance of octoploids over …

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A Reconnaissance Of Small Mammal Communities In Garland And Government Prairies, Arizona, Joseph L. Ganey, Carol L. Chambers Aug 2011

A Reconnaissance Of Small Mammal Communities In Garland And Government Prairies, Arizona, Joseph L. Ganey, Carol L. Chambers

Western North American Naturalist

Small mammals play key ecological roles in grassland ecosystems, yet little is known regarding small mammal communities in large (>50 km2), high-elevation prairies embedded in ponderosa pine (Pinus ponderosa) forests in north central Arizona. To provide information on community composition and habitat relationships, we live-trapped small mammals on 6 transects in 2 prairies in 2008. We captured 78 individuals in 5501 trap occasions. Capture rates were low and varied widely among transects. Community composition was simple, with only 3 species of small mammals captured. In order of relative abundance, these species were deer mouse ( …

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Distribution Records And Comments On Fleas In Southwestern South Dakota, Omer R. Larson, Steven G. Platt, Zannita Fast Horse, Thomas R. Rainwater, Stanlee M. Miller Aug 2011

Distribution Records And Comments On Fleas In Southwestern South Dakota, Omer R. Larson, Steven G. Platt, Zannita Fast Horse, Thomas R. Rainwater, Stanlee M. Miller

Western North American Naturalist

From October 2003 through April 2006, we collected 565 fleas incidental to a distribution survey of mammals in southwestern South Dakota. Sixty-one specimens, representing 18 species of mammals, possessed 20 species of fleas. The geographic distributions of these flea species revealed 8 new records for the Black Hills and its adjacent grasslands. Four species—Megarthroglossus divisus, Stenoponia americana, Odontopsyllus dentatus, and Amaradix euphorbi—constitute new records for South Dakota, thus increasing the state’s known flea fauna to 42 species. Hunters, trappers, and field biologists should be aware that serosurveillance during the 1990s revealed the presence of sylvatic plague and tularemia …

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Aryl Acetate Phase Transfer Catalysis: Method And Computation Studies, Meisha A. Binkley Aug 2011

Aryl Acetate Phase Transfer Catalysis: Method And Computation Studies, Meisha A. Binkley

Theses and Dissertations

Brief explanation and history of cinchona based Phase Transfer Catalysis (PTC). Studied aryl acetates in PTC, encompassing napthoyl, 6-methoxy napthoyl, phenyl and protected 4-hydroxy phenyl acetates. Investigated means of controlling the selectivity of the PTC reaction by changing the electrophile size, the ether side group size or by addition of inorganic salts. Found that either small or aromatic electophiles increased enantioselectivity more than aliphatic electrophiles, and that increasing the size of ether protecting group also increased selectivity. Positive effects of salt addition included either decreasing reaction time or increasing enantiomeric excess. Applied findings towards the synthesis of S-equol. Computational experiments …

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End Matter, Vol. 5 Aug 2011

End Matter, Vol. 5

Monographs of the Western North American Naturalist

No abstract provided.

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Birds Of Glen Canyon National Recreation Area, Utah And Arizona, John R. Spence, Charles T. Larue, John D. Grahame Aug 2011

Birds Of Glen Canyon National Recreation Area, Utah And Arizona, John R. Spence, Charles T. Larue, John D. Grahame

Monographs of the Western North American Naturalist

The birds of Glen Canyon National Recreation Area, in southern Utah and northern Arizona, are documented, with information on abundance, distribution, ecology, residency status, and breeding status. In all, 316 species have been reported from the park since the first surveys in the region during the 1930s. Historical survey data from the pre-Glen Canyon Dam surveys are incorporated, as well as significant work done in the park since 1992. Breeding is documented for 87 species, including 82 native species and 5 exotic species. Many rare species are reported for the first time from this section of the state, and several …

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Tailoring The Spectral Transmission Of Optofluidic Waveguides, Brian S. Phillips Aug 2011

Tailoring The Spectral Transmission Of Optofluidic Waveguides, Brian S. Phillips

Theses and Dissertations

Optofluidics is a relatively new and exciting field that includes the integration of optical waveguides into microfluidic platforms. The purpose of this field of study is to miniaturize previously developed optical systems used for biological and chemical analysis with the end goal of placing bench-top optics into microscopic packages. Mundane optical alignment and sample manipulation procedures would then be intrinsic to the platform and allow measurements to be completed quickly and with reduced human interaction. Biosensors based on AntiResonant Reflecting Optical Waveguides (ARROWs) consist of hollow-core waveguides used for fluid sample manipulation and analysis, as well as solid-core waveguides used …

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The Formation And Stability Of Radical-Molecule And Radical-Radical Complexes And Their Importance In Atmospheric Processes, Jared M. Clark Aug 2011

The Formation And Stability Of Radical-Molecule And Radical-Radical Complexes And Their Importance In Atmospheric Processes, Jared M. Clark

Theses and Dissertations

This research explores the role that radical-molecule complexes play in the chemistry of Earth's atmosphere. The formation of such complexes can have direct and pronounced effects on the reaction and product outcome of atmospheric chemical reactions. Some attention is also given to the formation of radial-radical pre-reactive complexes in the HO + ClO system. Peroxy radicals (RO2) can form stable complexes with polar compounds such as H2O, NH3, and CH3OH. For the simplest RO2 radical, HO2, complex formation (e.g., HO2-H2O, HO2-NH3, and HO2-722;CH3OH) gives rise to a significant increase in the HO2 self-reaction rate constant. Although this phenomenon has been …

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Cyanobacteria In Soils From A Mojave Desert Ecosystem, Hend Alwathnani, Jeffrey R. Johansen Aug 2011

Cyanobacteria In Soils From A Mojave Desert Ecosystem, Hend Alwathnani, Jeffrey R. Johansen

Monographs of the Western North American Naturalist

The Fort Irwin National Training Center in the Mojave Desert of California contains soils that represent a diversity of disturbance regimes, including some soil sites that have been protected from anthropogenic disturbance for many years. Previous studies of the soils of this military installation discussed biogeography and ecology of the crusts but did not conduct detailed study of the species present. In this study, we selected 6 sites in and around the Fort Irwin Training Center to be the subject of intensive isolation efforts. These sites contained at least some development of microbiotic soil crust. Out of the more than …

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Front Matter, Vol. 5 Aug 2011

Front Matter, Vol. 5

Monographs of the Western North American Naturalist

No abstract provided.

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Mechanisms Of Prenatal High-Salt "Fetal Programming" Resulting In Stress Hyperresponsiveness In The Adult Female Offspring In The Sprague Dawley Rat., Clinton L. Johnson Aug 2011

Mechanisms Of Prenatal High-Salt "Fetal Programming" Resulting In Stress Hyperresponsiveness In The Adult Female Offspring In The Sprague Dawley Rat., Clinton L. Johnson

Theses and Dissertations

Female offspring of Sprague-Dawley rats fed a high-salt diet (HS) during pregnancy show an enhancement of mean arterial pressure (MAP) and heart rate (HR) response to acute stress in adulthood compared to offspring whose mothers were fed a normal-salt diet (NS) [1]. In the present study, we first examined the expression of soluble epoxide hydrolase (SEH) protein in brain tissue. Whole brains were collected and SEH gene (EPHX2) mRNA and SEH protein expression were analyzed using RT-PCR and Western blot, respectively. mRNA levels were relatively decreased in high-salt rats (1.0 ± 0.32 NS vs 0.39 ± 0.07 HS, n=6). However, …

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Scarification And Cultural Practice Of Four Lupine Species Native To The Great Basin, Covy Dennis Jones Aug 2011

Scarification And Cultural Practice Of Four Lupine Species Native To The Great Basin, Covy Dennis Jones

Theses and Dissertations

The Great Basin is North America's largest desert, encompassing 135 million acres. Grazing and other anthropogenic activities in the Great Basin have put heavy demands on the landscape over the last 150 years. Heavily grazed areas lack diversity which allows the spread of exotic weed species. Cheatgrass (Bromus tectorum L [Poaceae]) has invaded and shortened fire frequency intervals from historic 30—100 years to as few as three to five years. Post-fire reseeding of native species is requisite for restoration of highly invaded ecosystems thus, preventing complete conversion to exotic weeds. Most native shrubs and grasses are available for restoration …

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Ferritin Diversity: Mechanistic Studies, Disease Implications, And Materials Chemistry, Robert Joseph Hilton Aug 2011

Ferritin Diversity: Mechanistic Studies, Disease Implications, And Materials Chemistry, Robert Joseph Hilton

Theses and Dissertations

The study of ferritin includes a rich history of discoveries and scientific progress. Initially, the composition of ferritin was determined. Soon, it was shown that ferritin is a spherical, hollow protein. Eventually, over several decades of research, the structure and some function of this interesting protein was elucidated. However, the ferritin field was not completely satisfied. Today, for example, researchers are interested in refining the details of ferritin function, in discovering the role of ferritin in a variety of diseases, and in using ferritin for materials chemistry applications. The work presented in this dissertation highlights the progress that we have …

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Characterization Of The Desorption Electrospray Ionization Mechanism Using Microscopic Imaging Of The Sample Surface, Michael Craig Wood Aug 2011

Characterization Of The Desorption Electrospray Ionization Mechanism Using Microscopic Imaging Of The Sample Surface, Michael Craig Wood

Theses and Dissertations

Desorption electrospray ionization (DESI) is an ambient ionization technique for mass spectrometry. This solvent based desorption ion source has wide applicability in surface analysis with minimal sample preparation. Interest in improving detection limits, broadening applications, and increasing the spatial resolution for chemical imaging has led to studies of the DESI mechanism. An inverted microscope has been used to image interactions between the DESI spray and test analytes on a glass surface. Microscopic images recorded with millisecond time resolution have provided important insights into the processes governing analyte transport and desorption. These insights are the basis of a rivulet-based model for …

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The Characterization Of Avian Polyomavirus, Satellite Tobacco Mosaic Virus, And Bacteriophage Cw02 By Means Of Cryogenic Electron Microscopy, Peter S. Shen Aug 2011

The Characterization Of Avian Polyomavirus, Satellite Tobacco Mosaic Virus, And Bacteriophage Cw02 By Means Of Cryogenic Electron Microscopy, Peter S. Shen

Theses and Dissertations

Viruses are the most abundant biological entity in the biosphere and are known to infect hosts from all domains of life. The aim of my work is to identify conserved and non-conserved features among the capsid structures of related and divergent icosahedral viruses via cryogenic electron microscopy, sequence analysis, molecular modeling, and other techniques. Bird polyomaviruses often cause severe disease in their hosts whereas mammalian polyomaviruses generally do not. Avian polyomavirus is a type of bird polyomavirus with an unusually broad host range compared to the restricted tropism of other polyomaviruses. Although most polyomaviruses have a conserved, rigid capsid protein …

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Community Affair: Social Inclusion And Swapping, Jowanza Joseph Aug 2011

Community Affair: Social Inclusion And Swapping, Jowanza Joseph

Student Works

Swapping has become primitive economic behavior with the advent of currency. However, with the increase in concern about the environment swapping has emerged in many forums including swap meets, free cycle and online swapping forums. We perform an exploratory investigation of this behavior through an imperial investigation of Twitter. We test the connectedness, and the popularity of people who are involved in swap meets and farmers markets. Finally, we discuss the implications and future directions for swapping.

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Oat Snp Marker Discovery And Mapping Based On 454 Pyrosequencing Of Genome-Reduced Avena Magna Murphy Et Terrell, Rachel Rebecca Redman Jul 2011

Oat Snp Marker Discovery And Mapping Based On 454 Pyrosequencing Of Genome-Reduced Avena Magna Murphy Et Terrell, Rachel Rebecca Redman

Theses and Dissertations

The size and complexity of the oat genomes (Avena L., x = 7) have made genetic studies, including the discovery of molecular markers, difficult. Recent attention to these species has resulted in the development of many DArT -based markers in the tetraploid A. magna Murphy et Terrill (2n = 28, CCDD genomes), along with numerous RFLP's, SSR's, DArT's, and EST-based SNPs in hexaploid A. sativa L. (2n = 42, AACCDD). Here we report the first SNP markers for tetraploid oat based on genome reduction and high-throughput pyrosequencing in two inbred lines of A. magna: A-169 (wild) and Ba …

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Design And Analysis Of A Flapping Wing Mechanism For Optimization, Ryan Brandon George Jul 2011

Design And Analysis Of A Flapping Wing Mechanism For Optimization, Ryan Brandon George

Theses and Dissertations

Furthering our understanding of the physics of flapping flight has the potential to benefit the field of micro air vehicles. Advancements in micro air vehicles can benefit applications such as surveillance, reconnaissance, and search and rescue. In this research, flapping kinematics of a ladybug was explored using a direct linear transformation. A flapping mechanism design is presented that was capable of executing ladybug or other species-specific kinematics. The mechanism was based on a differential gear design, had two wings, and could flap in harsh environments. This mechanism served as a test bed for force analysis and optimization studies. The first …

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Resolving Incidents Of Bullying Among High Functioning Adolescents With Asd: Parent Perspectives, Wan-Ting Chuang Jul 2011

Resolving Incidents Of Bullying Among High Functioning Adolescents With Asd: Parent Perspectives, Wan-Ting Chuang

Theses and Dissertations

A qualitative study was conducted investigating the perceptions of seven parents of high functioning adolescents with autism spectrum disorders (ASD) regarding incidents of bullying in which the child was involved. Results of the study indicated that all of the children had been bullied at one time or another, and that the majority had difficulty in demonstrating appropriate social skills. The parents viewed supportive peers to be a positive factor, fostering the children's satisfactory social adjustment. Parent interventions for their child included social skills instruction and empathy training. Research implications for educators included the need to establish systemic organized school-wide support …

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Mapping And Modeling Chlorophyll-A Concentrations In Utah Lake Using Landsat 7 Etm+ Imagery, Victor Nii Afum Narteh Jul 2011

Mapping And Modeling Chlorophyll-A Concentrations In Utah Lake Using Landsat 7 Etm+ Imagery, Victor Nii Afum Narteh

Theses and Dissertations

This study shows the results of testing previous research that used remote sensing techniques to determine chlorophyll-a concentrations in turbid surface waters, and developing similar methods and models for Utah Lake using Landsat 7 ETM+ satellite imagery and field measured concentrations of chlorophyll-a. The data for the study included images acquired on June 22 and July 8, 2009. The field data included ground measurements taken on June 22 and July 6, 2009 from seven water quality sampling locations. The 48 hour time difference between the Landsat image acquisition (July 8) and the field measurement (July 6), and the small sample …

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Naive Bayesian Spam Filters For Log File Analysis, Russel William Havens Jul 2011

Naive Bayesian Spam Filters For Log File Analysis, Russel William Havens

Theses and Dissertations

As computer system usage grows in our world, system administrators need better visibility into the workings of computer systems, especially when those systems have problems or go down. Most system components, from hardware, through OS, to application server and application, write log files of some sort, be it system-standardized logs such syslog or application specific logs. These logs very often contain valuable clues to the nature of system problems and outages, but their verbosity can make them difficult to utilize. Statistical data mining methods could help in filtering and classifying log entries, but these tools are often out of the …

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Calcineurin Is Required For Trpv1-Induced Ltd Of Ca1 Stratum Radiatum Interneurons, Tyron Deray Jensen Jul 2011

Calcineurin Is Required For Trpv1-Induced Ltd Of Ca1 Stratum Radiatum Interneurons, Tyron Deray Jensen

Theses and Dissertations

Learning and memory in the brain are thought to be dependent on synaptic plasticity. In response to sensory input, synapses can be strengthened or weakened, known as long-term potentiation or long-term depression (LTD), respectively. Transient receptor potential vanilloid 1 (TRPV1) has been shown to mediate a novel form of presynaptic LTD in hippocampal interneurons. TRPV1 is currently being heavily studied in the PNS and being targeted by pharmaceuticals for its anti-nociceptive and anti-inflammatory properties. However, much less is known regarding TRPV1 function in the CNS, including the signal mechanism mediating hippocampal LTD despite its obvious importance. Here we performed whole-cell …

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An Invasive Species Reduces Aquatic Insect Flux To Terrestrial Food Webs, Steven S. Merkley Jul 2011

An Invasive Species Reduces Aquatic Insect Flux To Terrestrial Food Webs, Steven S. Merkley

Theses and Dissertations

Although it is well documented how introduced species can negatively affect native species, we only poorly understand how they may alter ecosystem functions. We investigated how an invasive fish affected the flux of aquatic insects to terrestrial food webs using mesocosms in a desert spring ecosystem. We compared aquatic insect emergence between alternative community states with monocultures and polycultures of two native species of fish, least chub (Iotichthys phlegethontis) and Utah chub (Gila atraria) plus, introduced western mosquitofish (Gambusia affinis). We tested three hypotheses: (1) aquatic insect biomass will be greater than terrestrial insect …

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Changes In Life History Within An Individual's Lifetime, Eric J. Billman Jul 2011

Changes In Life History Within An Individual's Lifetime, Eric J. Billman

Theses and Dissertations

A central goal of life history theory is to understand the selective factors that generate the diversity of reproductive patterns observed in nature. Within lifetime changes in reproductive investment will determine an organism's fitness; however, this area of life history theory has received less attention than comparisons among population that characterize life history traits as a single population mean. Reproductive allocation can be affected by multiple cues; the integration of these cues across an organism's lifetime generates the diversity in life history strategies observed in nature. Life history studies should examine the interacting effects of multiple cues on life history …

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Spinal Implant With Customized And Non-Linear Stiffness, Eric Ray Dodgen Jul 2011

Spinal Implant With Customized And Non-Linear Stiffness, Eric Ray Dodgen

Theses and Dissertations

There is a need for spinal implants that have nonlinear stiffness to provide stabilization if the spine loses stiffness through injury, degeneration, or surgery. There is also a need for spinal implants to be customizable for individual needs, and to be small enough to be unobtrusive once implanted. Past and ongoing work that defines the effects of degeneration on the torque rotation curve of a functional spinal unit (FSU) were used to produce a spinal implant which could meet these requirements. This thesis proposes contact-aided inserts to be used with the FlexSuRe™ spinal implant to create a nonlinear stiffness. Moreover, …

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Adult Attachment: A Framework For Predicting Dating Patterns, Franklin Owen Poulsen Jul 2011

Adult Attachment: A Framework For Predicting Dating Patterns, Franklin Owen Poulsen

Theses and Dissertations

Although adult attachment has been the focus of a great deal of relationship research, few studies have attempted to examine how adult attachment style may be related to relationship initiation. This study investigates how adult attachment is associated with dating processes and patterns in a sample (N = 587) of college students at a private religious university. Results indicate that attachment anxiety and attachment avoidance are related to a pattern of being mostly dateless in a twenty-five week period. Furthermore, attachment avoidance but not anxiety is related to having fewer relationships in the period. Along with attachment avoidance and anxiety, …

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