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2013

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Articles 1 - 30 of 11772

Full-Text Articles in Medicine and Health Sciences

Novel Splenic Antigen-Presenting Cells Derive From A Lin-C-Kitlo Progenitor, Pravin Periasamy, Jonathan Tan, Helen O'Neill Aug 2015

Novel Splenic Antigen-Presenting Cells Derive From A Lin-C-Kitlo Progenitor, Pravin Periasamy, Jonathan Tan, Helen O'Neill

Helen O'Neill

No abstract provided.


Adjuvant Concurrent Chemoradiation Using Intensity-Modulated Radiotherapy And Simultaneous Integrated Boost For Resected High-Risk Adenocarcinoma Of The Distal Esophagus And Gastro-Esophageal Junction., Brian Yaremko, David Palma, Abigail Erickson, Gregory Pierce, Richard Malthaner, Richard Inculet, Rashid Dar, George Rodrigues, Edward Yu Jul 2015

Adjuvant Concurrent Chemoradiation Using Intensity-Modulated Radiotherapy And Simultaneous Integrated Boost For Resected High-Risk Adenocarcinoma Of The Distal Esophagus And Gastro-Esophageal Junction., Brian Yaremko, David Palma, Abigail Erickson, Gregory Pierce, Richard Malthaner, Richard Inculet, Rashid Dar, George Rodrigues, Edward Yu

Richard A. Malthaner

Purpose: Multimodality therapy leads to improved outcomes for adenocarcinoma of the distal esophagus and gastroesophageal junction (GEJ) over surgery alone. At our institution, adjuvant chemoradiation (chemoRT) using IMRT and SIB is standard of care for resected high-risk disease. In this study, we review our experience with a recent cohort of patients treated in this manner. Methods and materials: We identified 18 patients with resected T3 and/or N1 adenocarcinoma of the distal esophagus and GEJ who received adjuvant chemoRT. A large elective volume (PTV1) and a smaller high-risk volume (PTV2) were irradiated simultaneously using IMRT and an SIB technique. All ...


Adjuvant Concurrent Chemoradiation Using Intensity-Modulated Radiotherapy And Simultaneous Integrated Boost For Resected High-Risk Adenocarcinoma Of The Distal Esophagus And Gastro-Esophageal Junction., Brian Yaremko, David Palma, Abigail Erickson, Gregory Pierce, Richard Malthaner, Richard Inculet, Rashid Dar, George Rodrigues, Edward Yu Jul 2015

Adjuvant Concurrent Chemoradiation Using Intensity-Modulated Radiotherapy And Simultaneous Integrated Boost For Resected High-Risk Adenocarcinoma Of The Distal Esophagus And Gastro-Esophageal Junction., Brian Yaremko, David Palma, Abigail Erickson, Gregory Pierce, Richard Malthaner, Richard Inculet, Rashid Dar, George Rodrigues, Edward Yu

Richard A. Malthaner

Purpose: Multimodality therapy leads to improved outcomes for adenocarcinoma of the distal esophagus and gastroesophageal junction (GEJ) over surgery alone. At our institution, adjuvant chemoradiation (chemoRT) using IMRT and SIB is standard of care for resected high-risk disease. In this study, we review our experience with a recent cohort of patients treated in this manner. Methods and materials: We identified 18 patients with resected T3 and/or N1 adenocarcinoma of the distal esophagus and GEJ who received adjuvant chemoRT. A large elective volume (PTV1) and a smaller high-risk volume (PTV2) were irradiated simultaneously using IMRT and an SIB technique. All ...


Cultural Immersion – What Impact Does It Have?, Janie Smith, S Springer, B Murphy, C Wolfe, J Togno, Katrina Bramstedt, Sally Sargeant Apr 2015

Cultural Immersion – What Impact Does It Have?, Janie Smith, S Springer, B Murphy, C Wolfe, J Togno, Katrina Bramstedt, Sally Sargeant

Sally Sargeant

No abstract provided.


Assessment Of Medical Students’ Learning Outcomes In Australia : Current Practice, Future Possibilities, David Wilkinson, Benedict Canny, Jacob Pearce, Hamish Coates, Daniel Edwards Feb 2015

Assessment Of Medical Students’ Learning Outcomes In Australia : Current Practice, Future Possibilities, David Wilkinson, Benedict Canny, Jacob Pearce, Hamish Coates, Daniel Edwards

Dr Jacob Pearce

All 19 medical schools in Australia examine and assess the performance of their students, but do so largely in isolation from each other. That is, most schools design, develop and deliver their own exams, against their own curriculum and standards, and students pass, fail and are graded with little external moderation or comparison. Accreditation of schools by the Australian Medical Council (AMC) provides some reassurance that assessment practices are appropriate in medical schools. However, very limited data are available for benchmarking performance against any national standard, or between medical schools in Australia. The Australian Medical Assessment Collaboration has been designed ...


Same Admissions Tools, Different Outcomes : A Critical Perspective On Predictive Validity In Three Undergraduate Medical Schools, Daniel Edwards, Tim Friedman, Jacob Pearce Feb 2015

Same Admissions Tools, Different Outcomes : A Critical Perspective On Predictive Validity In Three Undergraduate Medical Schools, Daniel Edwards, Tim Friedman, Jacob Pearce

Dr Jacob Pearce

Admission to medical school is one of the most highly competitive entry points in higher education. Considerable investment is made by universities to develop selection processes that aim to identify the most appropriate candidates for their medical programs. This paper explores data from three undergraduate medical schools to offer a critical perspective of predictive validity in medical admissions. This study examined 650 undergraduate medical students from three Australian universities as they progressed through the initial years of medical school (accounting for approximately 25 per cent of all commencing undergraduate medical students in Australia in 2006 and 2007). Admissions criteria (aptitude ...


International Health Care Issues And Services Identified While Mapping The Gerontological Nursing Literature, Marcia Henry, Marilia Antunez, Dorice Vieira, Kent Randell Dec 2014

International Health Care Issues And Services Identified While Mapping The Gerontological Nursing Literature, Marcia Henry, Marilia Antunez, Dorice Vieira, Kent Randell

Marilia Y. Antunez, MLS, MA

Bibliometric analysis of cited references; analyzed keywords, subject content, and authors to discern global issues of aging and collaborations of the articles published in three leading gerontological journals from 2008-2010.


The Effects Of Hibernation And Captivity On Glucose Metabolism And Thyroid Hormones In American Black Bear (Ursus Americanus)., S Mccain, Edward Ramsay, Claudia Kirk Apr 2014

The Effects Of Hibernation And Captivity On Glucose Metabolism And Thyroid Hormones In American Black Bear (Ursus Americanus)., S Mccain, Edward Ramsay, Claudia Kirk

Claudia A Kirk

American black bears (Ursus americanus) have been shown to become transiently insulin resistant and hypothyroid during winter, but no studies have investigated these changes in long-term captive bears or in bears which remain awake year-round. Wild, captive hibernating, and captive nonhibernating bears were evaluated at times corresponding to three of their major physiologic stages: fall (hyperphagic stage), winter (hibernation stage), and summer (normal activity stage). Combined insulin and glucose tolerance tests and thyroid hormone profiles were performed on all bears during each stage. All three groups of bears had evidence of insulin resistance during the winter, as compared to the ...


Same Admissions Tools, Different Outcomes : A Critical Perspective On Predictive Validity In Three Undergraduate Medical Schools, Daniel Edwards, Tim Friedman, Jacob Pearce Jan 2014

Same Admissions Tools, Different Outcomes : A Critical Perspective On Predictive Validity In Three Undergraduate Medical Schools, Daniel Edwards, Tim Friedman, Jacob Pearce

Dr Tim Friedman

Admission to medical school is one of the most highly competitive entry points in higher education. Considerable investment is made by universities to develop selection processes that aim to identify the most appropriate candidates for their medical programs. This paper explores data from three undergraduate medical schools to offer a critical perspective of predictive validity in medical admissions. This study examined 650 undergraduate medical students from three Australian universities as they progressed through the initial years of medical school (accounting for approximately 25 per cent of all commencing undergraduate medical students in Australia in 2006 and 2007). Admissions criteria (aptitude ...


Xenograft Tumors Vascularized With Murine Blood Vessels May Overestimate The Effect Of Anti-Tumor Drugs: A Pilot Study, Zhihong Dong, Atsushi Imai, Sudha Krishnamurthy, Zhaocheng Zhang, Benjamin David Zeitlin, Jacques E. Nör Dec 2013

Xenograft Tumors Vascularized With Murine Blood Vessels May Overestimate The Effect Of Anti-Tumor Drugs: A Pilot Study, Zhihong Dong, Atsushi Imai, Sudha Krishnamurthy, Zhaocheng Zhang, Benjamin David Zeitlin, Jacques E. Nör

Dugoni School of Dentistry Faculty Articles

Recent evidence demonstrated that endothelial cells initiate signaling events that enhance tumor cell survival, proliferation, invasion, and tumor recurrence. Under this new paradigm for cellular crosstalk within the tumor microenvironment, the origin of endothelial cells and tumor cells may have a direct impact on the pathobiology of cancer. The purpose of this pilot study was to evaluate the effect of endothelial cell species (i.e. murine or human) on xenograft tumor growth and response to therapy. Tumor xenografts vascularized either with human or with murine microvascular endothelial cells were engineered, side-by-side, subcutaneously in the dorsum of immunodefficient mice. When tumors ...


Cocaine Enhances Hiv-1 Infectivity In Monocyte Derived Dendritic Cells By Suppressing Microrna-155, Jessica Napuri, Sudheesh Pilakka-Kanthikeel, Andrea Raymond, Marisela Agudelo, Adriana Yndart-Arias, Madhavan Nair, Shailendra K. Saxena Dec 2013

Cocaine Enhances Hiv-1 Infectivity In Monocyte Derived Dendritic Cells By Suppressing Microrna-155, Jessica Napuri, Sudheesh Pilakka-Kanthikeel, Andrea Raymond, Marisela Agudelo, Adriana Yndart-Arias, Madhavan Nair, Shailendra K. Saxena

HWCOM Faculty Publications

Cocaine and other drugs of abuse increase HIV-induced immunopathogenesis; and neurobiological mechanisms of cocaine addiction implicate a key role for microRNAs (miRNAs), single-stranded non-coding RNAs that regulate gene expression and defend against viruses. In fact, HIV defends against miRNAs by actively suppressing the expression of polycistronic miRNA cluster miRNA-17/92, which encodes miRNAs including miR-20a. IFN-g production by natural killer cells is regulated by miR-155 and this miRNA is also critical to dendritic cell (DC) maturation. However, the impact of cocaine on miR-155 expression and subsequent HIV replication is unknown. We examined the impact of cocaine on two miRNAs, miR-20a ...


The Effects Of Nesting Environment On Neonatal Hypoxic-Ischemic Injury, Laura Grace Rollins Dec 2013

The Effects Of Nesting Environment On Neonatal Hypoxic-Ischemic Injury, Laura Grace Rollins

Graduate Masters Theses

Term neonates with hypoxic-ischemic (HI) injury are at risk for devastating neurological sequelae. The objective of this study is to determine if altering the early environment for maternal care-taking impacts the immediate and long-term sequelae of HI offspring. The Rice-Vannucci model was used to induce HI in postnatal day (PND) 7 Long-Evans pups. Litters were assigned to a closed nest (CN) or normal standard housing (SH) condition. Neurobehavioral development, cognitive ability, and stress response were assessed to establish any benefits of the CN condition. Finally, postmortem brain tissue was analyzed for morphometric markers of injury.


Duration Of Untreated Psychosis Is Associated With Temporal And Occipitotemporal Gray Matter Volume Decrease In Treatment Naive Schizophrenia, Xiaofeng Guo, Jun Li, Qinling Wei, Xiaoduo Fan, David N. Kennedy, Yidong Shen, Huafu Chen, Jingping Zhao Dec 2013

Duration Of Untreated Psychosis Is Associated With Temporal And Occipitotemporal Gray Matter Volume Decrease In Treatment Naive Schizophrenia, Xiaofeng Guo, Jun Li, Qinling Wei, Xiaoduo Fan, David N. Kennedy, Yidong Shen, Huafu Chen, Jingping Zhao

University of Massachusetts Medical School Faculty Publications

BACKGROUND: Long duration of untreated psychosis (DUP) is associated with poor treatment outcome. Whether or not DUP is related to brain gray matter volume abnormalities in antipsychotic medication treatment naive schizophrenia remains unclear at this time.

METHODS: Patients with treatment-naive schizophrenia and healthy controls went through brain scan using high resolution Magnetic Resonance Imaging. DUP was evaluated using the Nottingham Onset Schedule (NOS), and dichotomized as short DUP ( 26 weeks). Voxel-based methods were used for volumetric measure in the brain.

RESULTS: Fifty-seven patients (27 short DUP and 30 long DUP) and 30 healthy controls were included in the analysis. There ...


Joint Effect Of Multiple Common Snps Predicts Melanoma Susceptibility, Shenying Fang, Jiali Han, Mingfeng Zhang, Li-E Wang, Qingyi Wei, Christopher I. Amos, Jeffrey E. Lee Dec 2013

Joint Effect Of Multiple Common Snps Predicts Melanoma Susceptibility, Shenying Fang, Jiali Han, Mingfeng Zhang, Li-E Wang, Qingyi Wei, Christopher I. Amos, Jeffrey E. Lee

Open Dartmouth: Faculty Open Access Articles

Single genetic variants discovered so far have been only weakly associated with melanoma. This study aims to use multiple single nucleotide polymorphisms (SNPs) jointly to obtain a larger genetic effect and to improve the predictive value of a conventional phenotypic model. We analyzed 11 SNPs that were associated with melanoma risk in previous studies and were genotyped in MD Anderson Cancer Center (MDACC) and Harvard Medical School investigations. Participants with ≥15 risk alleles were 5-fold more likely to have melanoma compared to those carrying ≤6. Compared to a model using the most significant single variant rs12913832, the increase in predictive ...


Net Primary Productivity Of Subalpine Meadows In Yosemite National Park In Relation To Climate Variability, Peggy E. Moore, Jan W. Van Wagtendonk, Julie L. Yee, Mitchel P. Mcclaran, David N. Cole, Neil K. Mcdougald, Matthew L. Brooks Dec 2013

Net Primary Productivity Of Subalpine Meadows In Yosemite National Park In Relation To Climate Variability, Peggy E. Moore, Jan W. Van Wagtendonk, Julie L. Yee, Mitchel P. Mcclaran, David N. Cole, Neil K. Mcdougald, Matthew L. Brooks

Western North American Naturalist

Subalpine meadows are some of the most ecologically important components of mountain landscapes, and primary productivity is important to the maintenance of meadow functions. Understanding how changes in primary productivity are associated with variability in moisture and temperature will become increasingly important with current and anticipated changes in climate. Our objective was to describe patterns and variability in aboveground live vascular plant biomass in relation to climatic factors. We harvested aboveground biomass at peak growth from four 64-m2 plots each in xeric, mesic, and hydric meadows annually from 1994 to 2000. Data from nearby weather stations provided independent variables ...


Rodent-Mediated Interactions Among Seed Species Of Differing Quality In A Shrubstepe Ecosystem, Karen H. Beard, Craig A. Faulhaber, Frank P. Howe, Thomas C. Edwards Jr. Dec 2013

Rodent-Mediated Interactions Among Seed Species Of Differing Quality In A Shrubstepe Ecosystem, Karen H. Beard, Craig A. Faulhaber, Frank P. Howe, Thomas C. Edwards Jr.

Western North American Naturalist

Interactions among seeds, mediated by granivorous rodents, are likely to play a strong role in shrubsteppe ecosystem restoration. Past studies typically consider only pairwise interactions between preferred and less preferred seed species, whereas rangeland seedings are likely to contain more than 2 seed species, potentially leading to complex interactions. We examined how the relative proportion of seeds in a 3-species polyculture changes rodent seed selectivity (i.e., removal) and indirect interactions among seeds. We presented 2 rodent species, Peromyscus maniculatus (deer mice) andPerognathus parvus (pocket mice), in arenas with 3-species seed mixtures that varied in the proportion of a ...


Long-Distance Movement In A Dusky Great Horned Owl And Limits To Phylogeography For Establishing Provenance, Robert W. Dickerman, Sabrina M. Mcnew, Christopher C. Witt Dec 2013

Long-Distance Movement In A Dusky Great Horned Owl And Limits To Phylogeography For Establishing Provenance, Robert W. Dickerman, Sabrina M. Mcnew, Christopher C. Witt

Western North American Naturalist

The Dusky Great Horned Owl (Bubo virginianus saturatus) of the Pacific Northwest region of North America is generally considered to be nonmigratory. Here we report a specimen of a Dusky Great Horned Owl that was salvaged in New Mexico and identified based on comparison of its plumage with a large series of museum skins. We attempted to corroborate this identification by comparing mitochondrial DNA sequences between the specimen and a representative sample of 5 Great Horned Owl subspecies from western North America. This analysis revealed minimal mitochondrial genetic variation and no evidence of population genetic structure, suggesting that the marked ...


Insect Prey Eaten By Hoary Bats (Lasiurus Cinereus) Prior To Fatal Collisions With Wind Turbines, Ernest W. Valdez, Paul M. Cryan Dec 2013

Insect Prey Eaten By Hoary Bats (Lasiurus Cinereus) Prior To Fatal Collisions With Wind Turbines, Ernest W. Valdez, Paul M. Cryan

Western North American Naturalist

Wind turbines are being deployed all across the world to meet the growing demand for energy, and in many areas, these turbines are causing the deaths of insectivorous migratory bats. One of the hypothesized causes of bat susceptibility is that bats are attracted to insects on or near the turbines. We examined insect remains in the stomachs and intestines of hoary bats (Lasiurus cinereus) found dead beneath wind turbines in New York and Texas to evaluate the hypothesis that bats die while feeding at turbines. Most of the bats we examined had full stomachs, indicating that they fed in the ...


Evaluating Survival Of Greater Sage-Grouse Chicks In Strawberry Valley, Utah, By Use Of Microtransmitters: Does Handling Time Negatively Influence Survival Rates?, Jared J. Baxter, Jordan P. Hennefer, Rick J. Baxter, Randy T. Larsen, Jerran T. Flinders Dec 2013

Evaluating Survival Of Greater Sage-Grouse Chicks In Strawberry Valley, Utah, By Use Of Microtransmitters: Does Handling Time Negatively Influence Survival Rates?, Jared J. Baxter, Jordan P. Hennefer, Rick J. Baxter, Randy T. Larsen, Jerran T. Flinders

Western North American Naturalist

Research indicates that low nest success and juvenile survival may be factors contributing to Greater Sage-Grouse population declines. Recent technological advances in microtransmitters have allowed researchers to monitor individual chicks and broods. We initiated a chick survival study in 2006 and used microtransmitters to (1) examine the viability of using microtransmitters on chicks to assess survival, including the effect of handling time during the suturing process; (2) estimate overall chick survival; and (3) compare chick survival in the Strawberry Valley population to other published reports. We used a known-fate model in program MARK to estimate ĉ (overdispersion), weekly survival rates ...


Seasonal Habitat Selection By Elk In North Central Utah, Jeffrey L. Beck, Kurt T. Smith, Jerran T. Flinders, Craig L. Clyde Dec 2013

Seasonal Habitat Selection By Elk In North Central Utah, Jeffrey L. Beck, Kurt T. Smith, Jerran T. Flinders, Craig L. Clyde

Western North American Naturalist

Understanding anthropogenic and environmental factors that influence seasonal habitat selection is critical in establishing conservation objectives for wildlife populations. However, many resource selection studies provide inferences only for single seasons, potentially masking factors essential to populations during other times of the year. Our objective was to model elk (Cervus elaphus) habitat selection for 4 seasons to identify factors influencing selection within and across seasons. Using aerial relocation data, we evaluated seasonal habitat selection for 46 radio-marked, migratory adult female elk in a 6123-km2 landscape in north central Utah, USA, from 1993 to 1997. We evaluated habitat use and availability ...


Impacts From Winter–Early Spring Elk Grazing In Foothills Rough Fescue Grassland, Tanya M. Thrift, Tracy K. Mosley, Jeffrey C. Mosley Dec 2013

Impacts From Winter–Early Spring Elk Grazing In Foothills Rough Fescue Grassland, Tanya M. Thrift, Tracy K. Mosley, Jeffrey C. Mosley

Western North American Naturalist

Foothills rough fescue (Festuca campestris) grasslands provide important foraging habitat for wildlife and livestock in the northwestern United States and southwestern Canada. Foothills rough fescue is sensitive to grazing during late spring–early summer but is believed to be more tolerant of grazing during winter–early spring. We evaluated vegetation and soil impacts from long-term winter–early spring grazing at 2 intensities (HG = heavy grazing, LG = light grazing). We studied a foothills rough fescue grassland in west central Montana, USA, that had been grazed almost exclusively by Rocky Mountain elk (Cervus elaphus nelsoni) during winter–early spring for 58 years ...


An Arizona Bark Scorpion (Centruroides Sculpturatus) Found Consuming A Venomous Prey Item Nearly Twice Its Length, Michael M. Webber, Matthew R. Graham Dec 2013

An Arizona Bark Scorpion (Centruroides Sculpturatus) Found Consuming A Venomous Prey Item Nearly Twice Its Length, Michael M. Webber, Matthew R. Graham

Western North American Naturalist

Arizona bark scorpions (Centruroides sculpturatus Ewing) are commonly found throughout the Sonoran Desert in southwestern North America, and they are well known for being the most venomous scorpion in the United States. Despite their medical significance, C. sculpturatus remains ecologically understudied, and little is known regarding its natural foraging and feeding behaviors. Here, we present the first documented case of C. sculpturatus feeding on the Sonoran Desert centipede (Scolopendra polymorpha Wood) in the wild.


Los Alacranes de Corteza de Arizona (Centruroides sculpturatus Ewing), por lo general, se encuentran en todo el Desierto de Sonora, en el sudoeste de Norteamérica, y ...


Impact Of Livestock Grazing On Plant And Small Mammal Communities In The Ruby Mountains, Northeastern Nevada, Eric A. Rickart, Klaus G. Bienek, Rebecca J. Rowe Dec 2013

Impact Of Livestock Grazing On Plant And Small Mammal Communities In The Ruby Mountains, Northeastern Nevada, Eric A. Rickart, Klaus G. Bienek, Rebecca J. Rowe

Western North American Naturalist

We assessed the effects of livestock grazing on vegetation and small mammals in semiarid habitat at a site in northeastern Nevada. Habitat within a fenced exclosure that had been protected from grazing for more than 50 years supported more vegetation and had greater plant diversity compared to habitat immediately outside the exclosure. Likewise, species richness and abundance of small mammals were greater in ungrazed areas. Results suggest that grazing regulation in recent decades may account for some of the changes seen in regional plants and small mammals over the past century. The incorporation of long-term exclosures in a comparative framework ...


New Records Of Marginal Locations For American Pika (Ochotona Princeps) In The Western Great Basin, Constance I. Millar, Robert D. Westfall, Diane L. Delany Dec 2013

New Records Of Marginal Locations For American Pika (Ochotona Princeps) In The Western Great Basin, Constance I. Millar, Robert D. Westfall, Diane L. Delany

Western North American Naturalist

We describe 46 new site records documenting occupancy by American pika (Ochotona princeps) at 21 locations from 8 mountain regions in the western Great Basin, California, and Nevada. These locations comprise a subset of sites selected from regional surveys to represent marginal, isolated, or otherwise atypical pika locations, and to provide information for assessing environmental tolerance limits. Several locations are known from historic observations (Madeline Plain, Bodie Mtns., Wassuk Mtns., Mono Craters) and are included here to update current status. Site elevations range from 1848 m to 3392 m; relative to the broad range of pika sites in the region ...


Helminths Of The Speckled Rattlesnake, Crotalus Mitchellii (Squamata: Viperidae), Stephen R. Goldberg, Charles R. Bursey, Xavier Glaudas Dec 2013

Helminths Of The Speckled Rattlesnake, Crotalus Mitchellii (Squamata: Viperidae), Stephen R. Goldberg, Charles R. Bursey, Xavier Glaudas

Western North American Naturalist

Fifty-six speckled rattlesnakes, Crotalus mitchellii, from western North America were examined for helminths. One species of Cestoda (tetrathyridia of Mesocestoides sp.) and 5 species of Nematoda (gravid adults of Abbreviata terrapenis, Physaloptera abjecta, Thubunaea cnemidophorus, and Travassoascaris araujoi and larvae ofPhysocephalus sp.) were found. Travassoascaris araujoi had the highest prevalence and greatest mean intensity of helminths infecting C. mitchellii. Three new host records forC. mitchellii are reported. As has been reported for other North American rattlesnakes,C. mitchellii is parasitized by “generalist” helminths.


Cincuenta y seis Viboras de Cascabel (Cascabeles Pintítas, Crotalus mitchellii) del oeste de América del ...


End Matter, Vol. 73 No. 4 Dec 2013

End Matter, Vol. 73 No. 4

Western North American Naturalist

No abstract provided.


Seed-Feeding Beetles (Bruchinae, Curculionidae, Brentidae) From Legumes (Dalea Ornata, Astragalus Filipes) And Other Forbs Needed For Restoring Rangelands Of The Intermountain West, James H. Cane, Clarence Johnson, Jesus Romero Napoles, Douglas A. Johnson, Robert Hammon Dec 2013

Seed-Feeding Beetles (Bruchinae, Curculionidae, Brentidae) From Legumes (Dalea Ornata, Astragalus Filipes) And Other Forbs Needed For Restoring Rangelands Of The Intermountain West, James H. Cane, Clarence Johnson, Jesus Romero Napoles, Douglas A. Johnson, Robert Hammon

Western North American Naturalist

Seed-feeding beetles of the genera Acanthoscelides, Apion, and occasionally Tychiuswere commonly found occurring in seeds from wild populations of Astragalus filipesand Dalea ornata across rangelands of the United States Intermountain West, resulting in many new state, county, and host records. These 2 legumes, as well as other perennial herbaceous species, are being commercially farmed to produce seed supplies to rehabilitate sagebrush-steppe and adjoining juniper woodlands following wildfires. Most of the seeds examined in this study hosted one or more seed-feeding beetles; beetles that pupate and overwinter in the seeds pose the risk of being transported to storage warehouses ...


Influence Of Boulders On Netleaf Hackberry (Celtis Reticulata) Growth And Distribution In The Wasatch Foothills, Alex Argyle, Michael T. Stevens Dec 2013

Influence Of Boulders On Netleaf Hackberry (Celtis Reticulata) Growth And Distribution In The Wasatch Foothills, Alex Argyle, Michael T. Stevens

Western North American Naturalist

In a landscape, abiotic features, such as boulders, influence microhabitats and consequently affect patterns of vegetation. We hypothesized that boulders in the foothills of the Wasatch Mountains east of Provo, Utah, affected the growth patterns of netleaf hackberry (Celtis reticulata) by providing shade on their north faces. To test this hypothesis, we set up 3 transects 6 m wide and up to 50 m long. Along these transects, we measured all hackberries taller than 30 cm (n = 249). We recorded whether the hackberries grew within 0.5 m of a boulder that was at least 0.5 m along one ...


Outstanding Natural History Paper Of 2012 Dec 2013

Outstanding Natural History Paper Of 2012

Western North American Naturalist

The winning paper is "Site-occupancy monitoring of an ecosystem indicator: linking characteristics of riparian vegetation to beaver occurrence" by Stewart W. Breck, Michael I. Goldstein, and Sanjay Pyare (WNAN 72:432–441).


Front Matter, Vol. 73 No. 4 Dec 2013

Front Matter, Vol. 73 No. 4

Western North American Naturalist

No abstract provided.