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Rocky mountain

Steven A Arisz, Jae-Yun Heo, Iko Tamar Koevoets, Tao Zhao, Pieter van Egmond, Jessica Meyer, Weiqing Zeng, Xiaomu Niu, Baosheng Wang, Thomas Mitchell-Olds, M Eric Schranz, Christa Testerink
Freezing limits plant growth and crop productivity, and plant species in temperate zones have the capacity to develop freezing tolerance through complex modulation of gene expression affecting various aspects of metabolism and physiology. While many components of freezing tolerance have been identified in model species under controlled laboratory conditions, little is known about the mechanisms that impart freezing tolerance in natural populations of wild species. Here, we performed a quantitative trait locus (QTL) study of acclimated freezing tolerance in seedlings of Boechera stricta, a highly adapted relative of Arabidopsis thaliana native to the Rocky Mountains...
June 15, 2018: Plant Physiology
Qi Wang, Qingdong Xie, Linyan He, Xiafang Sheng
In this study, we collected different levels of altered rocks of a rocky mountain and the adjacent soil and characterized the abundance and weathering effectiveness of Bacillus strains. Based on qPCR and culture-dependent approaches, the gene copies or the numbers of Bacillus strains were significantly higher in the soil than in the altered rocks, while the ratio of the gene copies or the numbers of Bacillus strains to those of total bacteria was higher in the less altered rock, followed by the more altered rock and the soil...
June 14, 2018: Journal of Basic Microbiology
N J Urie, J E Lombard, K L Marshall, R Digianantonio, A M Pelzel-McCluskey, B J McCluskey, J L Traub-Dargatz, C A Kopral, S L Swenson, J J Schiltz
Vesicular stomatitis (VS) is caused by a contagious rhabdovirus that affects horses, cattle, and swine. Clinical signs of vesicular stomatitis virus (VSV) infection in pigs and cattle are indistinguishable from foot-and-mouth disease (FMD), a foreign animal disease and reportable disease in the United States (Rodriguez et al., 2000). A VS epidemic occurred in the Rocky Mountain region in 2014-15. A study was conducted in Colorado to evaluate horse- and management-level factors associated with VS. For a horse to be considered a clinical VS horse, there were two requirements...
August 1, 2018: Preventive Veterinary Medicine
Sarah A Hendricks, Rena M Schweizer, Ryan J Harrigan, John P Pollinger, Paul C Paquet, Chris T Darimont, Jennifer R Adams, Lisette P Waits, Bridgett M vonHoldt, Paul A Hohenlohe, Robert K Wayne
Admixture resulting from natural dispersal processes can potentially generate novel phenotypic variation that may facilitate persistence in changing environments or result in the loss of population-specific adaptations. Yet, under the US Endangered Species Act, policy is limited for management of individuals whose ancestry includes a protected taxon; therefore, they are generally not protected under the Act. This issue is exemplified by the recently re-established grey wolves of the Pacific Northwest states of Washington and Oregon, USA...
June 7, 2018: Heredity
Kimberly M Davenport, Mingrui Duan, Samuel S Hunter, Daniel D New, Matthew W Fagnan, Margaret A Highland, Brenda M Murdoch
We report here the complete mitochondrial genome sequence of a Rocky Mountain bighorn sheep ( Ovis canadensis ) in the United States. The circular genome has a size of 16,466 bp and contains 13 protein-coding genes, 22 tRNA genes, and 2 rRNA genes.
June 7, 2018: Genome Announcements
Brandi Vollmer, Justin M Honce, Stefan Sillau, John R Corboy, Timothy Vollmer, Kavita Nair, Enrique Alvarez
BACKGROUND: Due to the recurrence of disease activity in multiple sclerosis (MS) patients, a washout period of <3 months has been suggested for the transition from natalizumab (NTZ) to fingolimod (FTY). However, very short transition periods of <1 month may be more beneficial. METHODS: Retrospective analysis of patients from the Rocky Mountain MS Center at the University of Colorado who were: a) on NTZ for ≥6 months prior to switching to FTY; b) had a transition period ≤ 6 months; and c) initiated FTY treatment prior to November 2013...
July 15, 2018: Journal of the Neurological Sciences
Michael D T Yue, David W Spivey, Daniel B Gingold, Douglas G Sward
BACKGROUND: The purpose of this study was to document the correlation between medical and wilderness training with levels of preparedness for acute mountain sickness (AMS), illness, and injury among backcountry hikers. METHODS: We conducted a cross-sectional, convenience survey in Rocky Mountain National Park in July and August 2015. The study group consisted of 380 hikers who completed a written survey that collected information about demographics, wilderness experience, altitude experience, hiking equipment, communications devices, and trip planning...
2018: World Journal of Emergency Medicine
Katherine B Benedict, Anthony J Prenni, Amy P Sullivan, Ashley R Evanoski-Cole, Emily V Fischer, Sara Callahan, Barkley C Sive, Yong Zhou, Bret A Schichtel, Jeffrey L Collett
Human influenced atmospheric reactive nitrogen (RN) is impacting ecosystems in Rocky Mountain National Park (ROMO). Due to ROMO's protected status as a Class 1 area, these changes are concerning, and improving our understanding of the contributions of different types of RN and their sources is important for reducing impacts in ROMO. In July-August 2014 the most comprehensive measurements (to date) of RN were made in ROMO during the Front Range Air Pollution and Photochemistry Éxperiment (FRAPPÉ). Measurements included peroxyacetyl nitrate (PAN), C1 -C5 alkyl nitrates, and high-time resolution NOx , NOy , and ammonia...
2018: PeerJ
Madhavi L Kakumanu, Loganathan Ponnusamy, Haley Sutton, Steven R Meshnick, William L Nicholson, Charles S Apperson
The American dog tick, Dermacentor variabilis (Say), is a vector of spotted fever group (SFG) rickettsiae, including Rickettsia rickettsii the causative organism of Rocky Mountain spotted fever (RMSF). In North Carolina, SFG rickettsioses (including RMSF) are a leading cause of tick-borne illness. Knowledge of the infection rate and geographic distribution of D. variabilis ticks infected with Rickettsia spp. provides information on the spatial distribution of public health risk. Accordingly, we extracted genomic DNA from adult D...
May 16, 2018: Journal of Medical Entomology
Thomas M Onuferko
Herein, the cleptoparasitic (cuckoo) bee genus Epeolus (Hymenoptera: Apidae) is revised for species occurring in North America, north of Mexico, and an updated checklist of all species known to occur in Canada and the United States of America is provided with comprehensive descriptions, diagnoses, and a single dichotomous key (using the same couplets for both sexes) to aid in their identification. To increase their recognition among North American naturalists, English common names are also proposed for all North American Epeolus ...
2018: ZooKeys
Wen Ping Deng, Jie Zhang, Zhi Jian Zhang, Shao Chang Hu, Jin Rong Guo, Yuan Qiu Liu, Fan Qian Kong, Yi Zhang
The stable hydrogen and oxygen isotopes are environmental isotopes, which widely exist in various kinds of water. Their relative abundance variation in water can indicate the water circulation and mechanism of water use in plant. This research selected two major kinds of greening tree species, evergreen coniferous Platycladus orientalis and deciduous broad-leaved Quercus variabilis, in Beijing mountainous area, and the water movement process in soil-plant-atmosphere continuum was investigated by the variation characteristics analysis of stable hydrogen and oxygen isotope compositions in precipitation, soil water, groundwater, plant stem water and leaf water...
July 18, 2017: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
Zi Qiang Liu, Xin Xiao Yu, Guo Dong Jia, Han Zhi Li, Wei Wei Lu
Water is the key factor limiting plant growth in seasonal arid area. In order to analyze the water sources of community plant (Platycladus orientalis, Vitex negundo var. heterophylla, Broussonetia papyrifera and Lespedeza bicolor) in Beijing mountainous area, we measured hydrogen and oxygen stable isotope ratio (δD and δ18 O) values of their xylem water and potential water sources. The results showed the four species had different water sources. P. orientalis mainly absorbed water from 40-60, 60-80 and 80-100 cm soil layers, and the utilization ratio of the three layers was 23...
July 18, 2017: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
Ronald Rosenberg, Nicole P Lindsey, Marc Fischer, Christopher J Gregory, Alison F Hinckley, Paul S Mead, Gabriela Paz-Bailey, Stephen H Waterman, Naomi A Drexler, Gilbert J Kersh, Holley Hooks, Susanna K Partridge, Susanna N Visser, Charles B Beard, Lyle R Petersen
INTRODUCTION: Vectorborne diseases are major causes of death and illness worldwide. In the United States, the most common vectorborne pathogens are transmitted by ticks or mosquitoes, including those causing Lyme disease; Rocky Mountain spotted fever; and West Nile, dengue, and Zika virus diseases. This report examines trends in occurrence of nationally reportable vectorborne diseases during 2004-2016. METHODS: Data reported to the National Notifiable Diseases Surveillance System for 16 notifiable vectorborne diseases during 2004-2016 were analyzed; findings were tabulated by disease, vector type, location, and year...
May 4, 2018: MMWR. Morbidity and Mortality Weekly Report
Erika Mayumi Shimabukuro, Susana Trivinho-Strixino
Thin layers of water running over rocky surfaces are characteristic of madicolous habitats, which harbor a peculiar Chironomidae community. However, information on the identity, distribution, and ecology of madicolous chironomids in the Neotropical region are still sparse. The main purpose of this research is to reveal and contribute to the ecology of madicolous Chironomidae species, especially regarding their altitudinal distribution in the Atlantic Forest. Sampling was performed using our own designed emergence traps deployed from 0 to 2700 m a...
2018: ZooKeys
Michael Gottlieb, Brit Long, Alex Koyfman
BACKGROUND: Rocky Mountain spotted fever (RMSF) is potentially deadly and can present subtly with signs and symptoms overlapping with other clinical conditions. Delayed diagnosis can be fatal. OBJECTIVE: This review provides an evidence-based summary of the current data for the evaluation and management of RMSF in the emergency department. DISCUSSION: RMSF occurs through transmission of Rickettsia rickettsii by an infected tick. Exposure in the United States occurs most commonly from April to September, and high-risk locations include wooded, shrubby, or grassy areas...
April 20, 2018: Journal of Emergency Medicine
Thomas Seth Davis, Fiona B Horne, Jens C Yetter, Jane E Stewart
Conifer secondary metabolites play a key role in mechanisms of resistance to biotic disturbance, especially by bark beetles and beetle-associated microorganisms. Here, we describe variation in constitutive monoterpenes isolated from Engelmann spruce, Picea engelmannii, phloem across fourteen high-elevation populations in the Rocky Mountains of Colorado, and test interactions between phloem monoterpenes and an endophloedic symbiotic fungus, Leptographium abietinum, associated with the North American spruce beetle, Dendroctonus rufipennis...
June 2018: Journal of Chemical Ecology
Jesús Delgado-De la Mora, Jesús David Licona-Enríquez, Marcia Leyva-Gastélum, David Delgado-De la Mora, Adela Rascón-Alcantar, Gerardo Álvarez-Hernández
INTRODUCTION: Rocky Mountain spotted fever is a highly lethal infectious disease, particularly if specific treatment with doxycycline is given belatedly. OBJECTIVE: To describe the clinical profile of fatal Rocky Mountain spotted fever cases in hospitalized patients in the state of Sonora, México. MATERIALS AND METHODS: We conducted a cross-sectional study on a series of 47 deaths caused by Rickettsia rickettsii from 2013 to 2016. The diagnosis of Rocky Mountain spotted fever was confirmed in a single blood sample by polymerase chain reaction (PCR) or by a four-fold increase in immunoglobulin G measured in paired samples analyzed by indirect immunofluorescence...
March 15, 2018: Biomédica: Revista del Instituto Nacional de Salud
Lisa L Wolfe, Mary Kay Watry, Michael A Sirochman, Tracey M Sirochman, Michael W Miller
  We evaluated a test and cull strategy for lowering chronic wasting disease (CWD) prevalence in a naturally-infected, free-ranging mule deer ( Odocoileus hemionus) herd wintering in the town of Estes Park, Colorado, USA and in nearby Rocky Mountain National Park. We tested 48-68% of the estimated number of adult (≥1 yr old) deer annually for 5 yr via tonsil biopsy immunohistochemistry (IHC), collecting 1,251 samples from >700 individuals and removing IHC-positive deer. Among males, CWD prevalence during the last 3 yr of selective culling was lower (one-sided Fisher's exact test P=0...
April 18, 2018: Journal of Wildlife Diseases
Charlotte C Reed, Ashley P Ballantyne, Leila Annie Cooper, Anna Sala
Forests sequester large amounts of carbon annually and are integral in buffering against effects of global change. Increasing atmospheric CO2 may enhance photosynthesis and/or decrease stomatal conductance (gs ) thereby enhancing intrinsic water-use efficiency (iWUE), having potential indirect and direct benefits to tree growth. While increasing iWUE has been observed in most trees globally, enhanced growth is not ubiquitous, possibly due to concurrent climatic constraints on growth. To investigate our incomplete understanding of interactions between climate and CO2 and their impacts on tree physiology and growth, we used an environmental gradient approach...
April 15, 2018: Global Change Biology
A Martínez-Caballero, B Moreno, C González, G Martínez, M Adames, J V Pachar, J B Varela-Petrucelli, J Martínez-Mandiche, J A Suárez, L Domínguez, Y Zaldívar, S Bermúdez
The clinical and pathologic characterisation of two fatal cases of tick-borne rickettsiosis in rural (El Valle) and urban (City of Panama) Panama are described. Clinical and autopsy findings were non-specific, but the molecular analysis was used to identify Rickettsia rickettsii in both cases. No ticks were collected in El Valle, while in the urban case, R. rickettsii was detected in Rhipicephalus sanguineus s.l., representing the first molecular finding in this tick in Panama and Central America.
May 2018: Epidemiology and Infection
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