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https://www.readbyqxmd.com/read/28193766/molecular-mechanisms-of-chronic-wasting-disease-prion-propagation
#1
Julie A Moreno, Glenn C Telling
Prion disease epidemics, which have been unpredictable recurrences, are of significant concern for animal and human health. Examples include kuru, once the leading cause of death among the Fore people in Papua New Guinea and caused by mortuary feasting; bovine spongiform encephalopathy (BSE) and its subsequent transmission to humans in the form of variant Creutzfeldt-Jakob disease (vCJD), and repeated examples of large-scale prion disease epidemics in animals caused by contaminated vaccines. The etiology of chronic wasting disease (CWD), a relatively new and burgeoning prion epidemic in deer, elk, and moose (members of the cervid family), is more enigmatic...
February 13, 2017: Cold Spring Harbor Perspectives in Medicine
https://www.readbyqxmd.com/read/28192042/assessing-timing-and-causes-of-neonatal-lamb-losses-in-a-bighorn-sheep-ovis-canadensis-canadensis-herd-via-use-of-vaginal-implant-transmitters
#2
Jamin L Grigg, Lisa L Wolfe, Karen A Fox, Halcyon J Killion, Jessica Jennings-Gaines, Michael W Miller, Brian P Dreher
We evaluated the use of vaginal implant transmitters (VITs) as a means of detecting, capturing, and radio collaring Rocky Mountain bighorn sheep ( Ovis canadensis canadensis) lambs to estimate survival and to facilitate carcass recovery to assess causes of mortality. We focused on one of several bighorn herds in Colorado, USA, suffering from depressed recruitment that was not preceded by a classic all-age die-off. We captured, radio-collared, diagnosed pregnancy by ultrasound examination, and inserted VITs into 15 pregnant ewes from a herd residing near Granite, Colorado...
February 13, 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/28131356/rocky-mountain-high-preventing-cannabis-related-injuries
#3
Shawn Ullrich, Anna Maria Valdez
No abstract text is available yet for this article.
January 2017: Journal of Emergency Nursing: JEN: Official Publication of the Emergency Department Nurses Association
https://www.readbyqxmd.com/read/28118557/brucellosis-transmission-between-wildlife-and-livestock-in-the-greater-yellowstone-ecosystem-inferences-from-dna-genotyping
#4
Michael P O'Brien, Albano Beja-Pereira, Neil Anderson, Ruben M Ceballos, William H Edwards, Beth Harris, Rick L Wallen, Vânia Costa
The wildlife of the Greater Yellowstone Ecosystem carries brucellosis, which was first introduced to the area by cattle in the 19th Century. Brucellosis transmission between wildlife and livestock has been difficult to study due to challenges in culturing the causative agent, Brucella abortus . We examined B. abortus transmission between American bison ( Bison bison ), Rocky Mountain elk ( Cervus elaphus nelsoni), and cattle ( Bos taurus ) using variable number tandem repeat (VNTR) markers on DNA from 98 B...
January 24, 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/28097845/-fatal-case-of-rickettsiosis-in-a-toddler-from-southeastern-mexico
#5
César Lugo-Caballero, Karla Dzul-Rosado, Georgina Rodríguez-Moreno, Raúl Tello-Martín, Karina López-Ávila, Jorge Zavala-Castro
Rocky Mountain spotted fever is a disease caused by Rickettsia rickettsii, a bacteria transmitted by infected ticks. It is characterized by fever, exanthema, arthralgias and myalgias; but sometimes its clinical presentation is non specific. Due to its similarities with other exanthematic diseases like dengue or chikungunya, Rocky Mountain spotted fever is not a first line diagnosis, even though countries like Mexico show the ecologic and socioeconomic characteristics that favor its transmission, with a 30% mortality rate among pediatric patients...
1, 2017: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/28091741/chemical-physical-and-biological-factors-shape-littoral-invertebrate-community-structure-in-coal-mining-end-pit-lakes
#6
Andreas Luek, Joseph B Rasmussen
Aquatic invertebrates form the base of the consumer food web in lakes. In coal-mining end-pit lakes, invertebrates are exposed to an environment with potentially challenging physical and chemical features. We hypothesized that the physical and chemical features of end-pit lakes reduce critical littoral habitat and thus reduce invertebrate diversity, thereby limiting the potential for these lakes to be naturalized. We used a multivariate approach using principle component analysis and redundancy analysis to study relationships between invertebrate community structure, habitat features, and water quality in five end-pit lakes and five natural lakes in the Rocky Mountain foothills of west-central Alberta, Canada...
January 13, 2017: Environmental Management
https://www.readbyqxmd.com/read/28070281/multiscale-habitat-relationships-of-snowshoe-hares-lepus-americanus-in-the-mixed-conifer-landscape-of-the-northern-rockies-usa-cross-scale-effects-of-horizontal-cover-with-implications-for-forest-management
#7
Joseph D Holbrook, John R Squires, Lucretia E Olson, Rick L Lawrence, Shannon L Savage
Snowshoe hares (Lepus americanus) are an ecologically important herbivore because they modify vegetation through browsing and serve as a prey resource for multiple predators. We implemented a multiscale approach to characterize habitat relationships for snowshoe hares across the mixed conifer landscape of the northern Rocky Mountains, USA. Our objectives were to (1) assess the relationship between horizontal cover and snowshoe hares, (2) estimate how forest metrics vary across the gradient of snowshoe hare use and horizontal cover, and (3) model and map snowshoe hare occupancy and intensity of use...
January 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28068343/the-fleas-siphonaptera-in-iran-diversity-host-range-and-medical-importance
#8
Naseh Maleki-Ravasan, Samaneh Solhjouy-Fard, Jean-Claude Beaucournu, Anne Laudisoit, Ehsan Mostafavi
BACKGROUND: Flea-borne diseases have a wide distribution in the world. Studies on the identity, abundance, distribution and seasonality of the potential vectors of pathogenic agents (e.g. Yersinia pestis, Francisella tularensis, and Rickettsia felis) are necessary tools for controlling and preventing such diseases outbreaks. The improvements of diagnostic tools are partly responsible for an easier detection of otherwise unnoticed agents in the ectoparasitic fauna and as such a good taxonomical knowledge of the potential vectors is crucial...
January 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28055518/rocky-mountain-spotted-fever
#9
Jennan Phillips
The tick-borne disease Rocky Mountain spotted fever (RMSF) can have deadly outcomes unless treated appropriately, yet nonspecific flu-like symptoms complicate diagnosis. Occupational health nurses must have a high index of suspicion with symptomatic workers and recognize that recent recreational or occupational activities with potential tick exposure may suggest RMSF.
January 2017: Workplace Health & Safety
https://www.readbyqxmd.com/read/28032787/2016-reports-of-the-regional-associations
#10
(no author information available yet)
Presents the 2016 reports of the following Regional Associations: the Eastern Psychological Association; the Midwestern Psychological Association; the New England Psychological Association; the Rocky Mountain Psychological Association; the Southeastern Psychological Association; the Southwestern Psychological Association; the Western Psychological Association; and the Southern Society for Philosophy and Psychology. (PsycINFO Database Record
December 2016: American Psychologist
https://www.readbyqxmd.com/read/28031280/proteolytic-cleavage-of-the-immunodominant-outer-membrane-protein-rompa-in-rickettsia-rickettsii
#11
Nicholas F Noriea, Tina R Clark, David Mead, Ted Hackstadt
: Rickettsia rickettsii, the causative agent of Rocky Mountain spotted fever, contains two immunodominant proteins, rOmpA and rOmpB, in the outer membrane. Both rOmpA and rOmpB are conserved throughout spotted fever group rickettsiae as members of a family of autotransporter proteins. Previously, it was demonstrated that rOmpB is proteolytically processed with the cleavage site residing near the autotransporter domain at the carboxy-terminal end of the protein, cleaving the 168 kDa precursor into apparent 120 kDa and 32 kDa fragments...
December 28, 2016: Journal of Bacteriology
https://www.readbyqxmd.com/read/28028105/flight-period-of-mountain-pine-beetle-coleoptera-curculionidae-in-its-recently-expanded-range
#12
K P Bleiker, B H Van Hezewijk
The ability to predict key phenological events, such as the timing of flight periods, is useful for the monitoring and management of insect pests. We used empirical data to describe the flight period of mountain pine beetle, Dendroctonus ponderosae Hopkins, in its recently expanded range east of the Rocky Mountains in Canada and developed a degree-day model based on the number of trapped beetles. Data were collected over four degrees of latitude and six years. The main flight period, when the middle 70% of the total number of beetles were caught, started during the second or third week of July, lasted 26 d, and peaked within 2 wk of starting...
December 2016: Environmental Entomology
https://www.readbyqxmd.com/read/27991554/water-soluble-organic-aerosols-in-the-colorado-rocky-mountains-usa-composition-sources-and-optical-properties
#13
Mingjie Xie, Natalie Mladenov, Mark W Williams, Jason C Neff, Joseph Wasswa, Michael P Hannigan
Atmospheric aerosols have been shown to be an important input of organic carbon and nutrients to alpine watersheds and influence biogeochemical processes in these remote settings. For many remote, high elevation watersheds, direct evidence of the sources of water soluble organic aerosols and their chemical and optical characteristics is lacking. Here, we show that the concentration of water soluble organic carbon (WSOC) in the total suspended particulate (TSP) load at a high elevation site in the Colorado Rocky Mountains was strongly correlated with UV absorbance at 254 nm (Abs254, r = 0...
December 19, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27990680/retrospective-study-of-rocky-mountain-spotted-fever-in-children
#14
Rechelle Tull, Christine Ahn, Alyssa Daniel, Gil Yosipovitch, Lindsay C Strowd
BACKGROUND/OBJECTIVES: Rocky Mountain spotted fever (RMSF), a lethal tick-borne illness, is prevalent in the south central United States. Children younger than 10 years old have the greatest risk of fatal outcome from RMSF. The objective of the current study was to review pediatric cases of RMSF seen in the dermatology consult service and to evaluate dermatology's role in the diagnosis and management of this disease. METHODS: A retrospective review was performed of inpatient dermatology consultations at a tertiary care center in North Carolina from 2001 to 2011...
December 19, 2016: Pediatric Dermatology
https://www.readbyqxmd.com/read/27951422/phytoremediation-of-cadmium-and-lead-polluted-watersheds
#15
Gordon Kersten, Brian Majestic, Martin Quigley
Abandoned hard rock mines and the resulting acid mine drainage (AMD) are a source of vast, environmental degradation that are toxic threats to plants, animals, and humans. Cadmium (Cd) and lead (Pb) are metal contaminants often found in AMD. In our mine outwash water samples, Cd and Pb concentrations were 300 and 40 times greater than EPA Aquatic Life Use water quality standards, respectively. We tested the phytoremediation characteristics, accumulation and tolerance of Cd and Pb contamination, for annual aboveground biomass harvest of three montane willows native to the Rocky Mountains: Salix drummondiana, S...
March 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/27929218/emerging-vector-borne-diseases
#16
Mark K Huntington, Jay Allison, Dilip Nair
Several mosquito-borne viral infections have recently emerged in North America; West Nile virus is the most common in the United States. Although West Nile virus generally causes a self-limited, flulike febrile illness, a serious neuroinvasive form may occur. Dengue is the most common vector-borne viral disease worldwide, and it has been a significant public health threat in the United States since 2009. Known as breakbone fever for its severe myalgias and arthralgias, dengue may cause a hemorrhagic syndrome...
October 1, 2016: American Family Physician
https://www.readbyqxmd.com/read/27920377/phenological-shifts-of-native-and-invasive-species-under-climate-change-insights-from-the-boechera-lythrum-model
#17
REVIEW
Robert I Colautti, Jon Ågren, Jill T Anderson
Warmer and drier climates have shifted phenologies of many species. However, the magnitude and direction of phenological shifts vary widely among taxa, and it is often unclear when shifts are adaptive or how they affect long-term viability. Here, we model evolution of flowering phenology based on our long-term research of two species exhibiting opposite shifts in floral phenology: Lythrum salicaria, which is invasive in North America, and the sparse Rocky Mountain native Boechera stricta Genetic constraints are similar in both species, but differences in the timing of environmental conditions that favour growth lead to opposite phenological shifts under climate change...
January 19, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/27909817/phylogenetic-structure-of-arbuscular-mycorrhizal-fungal-communities-along-an-elevation-gradient
#18
Cameron P Egan, Ragan M Callaway, Miranda M Hart, Jason Pither, John Klironomos
Despite the importance of arbuscular mycorrhizal (AM) fungi within terrestrial ecosystems, we know little about how natural AM fungal communities are structured. To date, the majority of studies examining AM fungal community diversity have focused on single habitats with similar environmental conditions, with relatively few studies having assessed the diversity of AM fungi over large-scale environmental gradients. In this study, we characterized AM fungal communities in the soil along a high-elevation gradient in the North American Rocky Mountains...
December 1, 2016: Mycorrhiza
https://www.readbyqxmd.com/read/27907209/correction-climate-demography-and-zoogeography-predict-introgression-thresholds-in-salmonid-hybrid-zones-in-rocky-mountain-streams
#19
(no author information available yet)
[This corrects the article DOI: 10.1371/journal.pone.0163563.].
2016: PloS One
https://www.readbyqxmd.com/read/27902732/predictors-of-current-and-longer-term-patterns-of-abundance-of-american-pikas-ochotona-princeps-across-a-leading-edge-protected-area
#20
Lucas Moyer-Horner, Erik A Beever, Douglas H Johnson, Mark Biel, Jami Belt
American pikas (Ochotona princeps) have been heralded as indicators of montane-mammal response to contemporary climate change. Pikas no longer occupy the driest and lowest-elevation sites in numerous parts of their geographic range. Conversely, pikas have exhibited higher rates of occupancy and persistence in Rocky Mountain and Sierra Nevada montane 'mainlands'. Research and monitoring efforts on pikas across the western USA have collectively shown the nuance and complexity with which climate will often act on species in diverse topographic and climatic contexts...
2016: PloS One
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