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https://www.readbyqxmd.com/read/28822927/comparative-ozone-responses-of-cutleaf-coneflowers-rudbeckia-laciniata-var-digitata-var-ampla-from-rocky-mountain-and-great-smoky-mountains-national-parks-usa
#1
Howard S Neufeld, Jennifer Johnson, Robert Kohut
Cutleaf coneflower (Rudbeckia laciniata L. var. digitata) is native to Great Smoky Mountains National Park (GRSM) and an ozone bioindicator species. Variety ampla, whose ozone sensitivity is less well known, is native to Rocky Mountain National Park (ROMO). In the early 2000s, researchers found putative ozone symptoms on var. ampla and rhizomes were sent to Appalachian State University to verify that the symptoms were the result of ozone exposure. In 2011, potted plants were exposed to ambient ozone from May to August...
August 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28809152/whole-genome-sequences-of-odocoileus-hemionus-deer-adenovirus-isolates-from-deer-moose-and-elk-are-highly-conserved-and-support-a-new-species-in-the-genus-atadenovirus
#2
Myrna M Miller, Todd E Cornish, Terry E Creekmore, Karen Fox, Will Laegreid, Jennifer McKenna, Marce Vasquez, Leslie W Woods
We present the first complete genome sequence of Odocoileus hemionus deer adenovirus 1 (OdAdV-1). This virus can cause sporadic haemorrhagic disease in cervids, although epizootics with high mortality have occurred in California. OdAdV-1 has been placed in the genus Atadenovirus, based on partial hexon, pVIII and fibre genes. Ten field isolates recovered from naturally infected mule deer (Odocoileus hemionus), white-tailed deer (Odocoileus virginiana) and moose (Alces alces) from Wyoming, black-tailed deer (Odocoileus hemionus columbianus) from California, and Rocky Mountain elk (Cervus elaphus nelsoni) from Colorado and Washington state were sequenced...
August 15, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28802078/geographical-features-are-the-predominant-driver-of-molecular-diversification-in-widely-distributed-north-american-whipsnakes
#3
Kyle A O'Connell, Jeffrey W Streicher, Eric N Smith, Matthew K Fujita
Allopatric divergence following the formation of geographical features has been implicated as a major driver of evolutionary diversification. Widespread species complexes provide opportunities to examine allopatric divergence across varying degrees of isolation in both time and space. In North America, several geographical features may play such a role in diversification, including the Mississippi River, Pecos River, Rocky Mountains, Cochise Filter Barrier, Gulf of California, and Isthmus of Tehuantepec. We used thousands of nuclear single nucleotide polymorphisms (SNPs) and mitochondrial DNA from several species of whipsnakes (genera Masticophis and Coluber) distributed across North and Central America to investigate the role that these geographical features have played on lineage divergence...
August 12, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28783058/evolution-of-diagnostic-tests-for-chronic-wasting-disease-a-naturally-occurring-prion-disease-of-cervids
#4
REVIEW
Nicholas J Haley, Jürgen A Richt
Since chronic wasting disease (CWD) was first identified nearly 50 years ago in a captive mule deer herd in the Rocky Mountains of the United States, it has slowly spread across North America through the natural and anthropogenic movement of cervids and their carcasses. As the endemic areas have expanded, so has the need for rapid, sensitive, and cost effective diagnostic tests-especially those which take advantage of samples collected antemortem. Over the past two decades, strategies have evolved from the recognition of microscopic spongiform pathology and associated immunohistochemical staining of the misfolded prion protein to enzyme-linked immunoassays capable of detecting the abnormal prion conformer in postmortem samples...
August 5, 2017: Pathogens
https://www.readbyqxmd.com/read/28777802/evidence-of-compounded-disturbance-effects-on-vegetation-recovery-following-high-severity-wildfire-and-spruce-beetle-outbreak
#5
Amanda R Carlson, Jason S Sibold, Timothy J Assal, Jose F Negrón
Spruce beetle (Dendroctonus rufipennis) outbreaks are rapidly spreading throughout subalpine forests of the Rocky Mountains, raising concerns that altered fuel structures may increase the ecological severity of wildfires. Although many recent studies have found no conclusive link between beetle outbreaks and increased fire size or canopy mortality, few studies have addressed whether these combined disturbances produce compounded effects on short-term vegetation recovery. We tested for an effect of spruce beetle outbreak severity on vegetation recovery in the West Fork Complex fire in southwestern Colorado, USA, where much of the burn area had been affected by severe spruce beetle outbreaks in the decade prior to the fire...
2017: PloS One
https://www.readbyqxmd.com/read/28769677/a-review-of-the-flea-genus-phalacropsylla-rothschild-1915-siphonaptera-ctenophthalmidae-neopsyllinae-phalacropsyllini-with-new-host-and-distributional-records
#6
Roxana Acosta, Michael W Hastriter
A redescription of the genus Phalacropsylla Rothschild is provided. Six species are recognized: Phalacropsylla allos Wagner, P. hamata Tipton and Mendez, P. morlani Eads and Campos, P. nivalis Barrera and Traub, P. oregonensis Lewis and Maser, and P. paradisea Rothschild. Phalacropsylla hamata is designated herein as a junior synonym of P. paradisea. The distribution of P. paradisea is more extensive than previously thought, extending from Arizona through southern Colorado, into New Mexico, Texas, and northern Mexico (State of Nuevo León)...
2017: ZooKeys
https://www.readbyqxmd.com/read/28764251/rickettsial-fever-presenting-with-gangrene-a-case-series
#7
Arun Prasannan, Premalatha Ramaswamy, Vinitha K Anirudhan
Rickettsial diseases comprise a wide spectrum of diseases which are reported from different parts of India quiet long ago. Many cases of rickettsial diseases go undiagnos due to lack of diagnostic techniques and the reported incidence and prevalence may be an underestimation of the actual burden of the disease. A higher index of suspicion, clinical awareness and proper use of available diagnostic tools would increase the frequency of diagnosis. Gangrene is an uncommon complication in cases of rickettsial fever...
June 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28762885/spring-and-early-summer-species-of-cortinarius-subgenus-telamonia-section-colymbadini-and-flavobasilis-in-the-mountains-of-western-north-america
#8
Joseph F Ammirati, Tuula Niskanen, Kare Liimatainen, Dimitar Bojantchev, Ursula Peintner, Regina Kuhnert-Finkernagel, Cathy Cripps
Seven species of Cortinarius, subgenus Telamonia, section Colymbadini and /Flavobasilis, are reported from conifer forests in the mountains of western North America. They typically produce basidiomes in the spring and summer. Only one species, C. colymbadinus, is widespread, occurring in Europe and western North America, but to date not reported from California. Cortinarius bridgei, C. flavobasilis, C. rumoribrunsi, C. vernalishastensis, and C. vernalisierraensis are new species. The first two are found throughout the western mountains, whereas the latter three thus far are known only from California...
July 11, 2017: Mycologia
https://www.readbyqxmd.com/read/28752623/summer-and-winter-drought-drive-the-initiation-and-spread-of-spruce-beetle-outbreak
#9
Sarah J Hart, Thomas T Veblen, Dominik Schneider, Noah P Molotch
This study used Landsat-based detection of spruce beetle (Dendroctonus rufipennis) outbreak over the years 2000-2014 across the Southern Rocky Mountain Ecoregion to examine the spatiotemporal patterns of outbreak and assess the influence of temperature, drought, forest characteristics and previous spruce beetle activity on outbreak development. During the 1999-2013 period, time series of spruce beetle activity were highly spatially correlated (r >0.5) at distances <5 km, but remained weakly correlated (r = 0...
July 28, 2017: Ecology
https://www.readbyqxmd.com/read/28747738/small-fire-refugia-in-the-grassy-matrix-and-the-persistence-of-afrotemperate-forest-in-the-drakensberg-mountains
#10
Hylton Adie, D Johan Kotze, Michael J Lawes
Afrotemperate forests situated in the Drakensberg mountains of South Africa are characteristically small (1-10 s ha) and widely dispersed in a vast fire-prone grassland. Compared with lowland forests, they are typically species poor with low levels of endemism and species turnover, patterns that are to date unexplained. Here we show that the richness, composition and functional traits of tree species distributed on extremely small (10-100 s m(2)) rocky fire-refugia situated in grassland are indistinguishable from that in forest...
July 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28741794/ecological-segregation-moderates-a-climactic-conclusion-to-trout-hybridization
#11
Michael K Young, Daniel J Isaak, Kevin S McKelvey, Taylor M Wilcox, Matthew R Campbell, Matthew P Corsi, Dona L Horan, Michael K Schwartz
Invasive hybridization, in which an introduced species may introgressively hybridize with a native taxon and threaten its persistence, is prominently featured in the conservation literature. One of the most frequently cited examples of this phenomenon involves interactions between native westslope cutthroat trout Oncorhynchus clarkii lewisi and introduced rainbow trout O. mykiss in a portion of the U.S. Northern Rocky Mountains (Allendorf & Leary, 1988). This article is protected by copyright. All rights reserved...
July 25, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28725380/from-the-ground-up-biotic-and-abiotic-features-that-set-the-course-from-genes-to-ecosystems
#12
Craig W Benkman, Sierra Jech, Matthew V Talluto
Spatial variation in cone serotiny in Rocky Mountain lodgepole pine (Pinus contorta ssp. latifolia) across Yellowstone National Park influences initial pine recruitment after stand-replacing fire with tremendous population, community, and ecosystem consequences. A previous study showed that much of the spatial variation in serotiny results from the balance of selection arising from high frequencies of fire favoring serotiny countered by opposing selection exerted by American red squirrels (Tamiasciurus hudsonicus) as seed predators...
October 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/28722584/rocky-mountain-spotted-fever-and-pregnancy-four-cases-from-sonora-mexico
#13
Jesus David Licona-Enriquez, Jesus Delgado-de la Mora, Christopher D Paddock, Carlos Arturo Ramirez-Rodriguez, María Del Carmen Candia-Plata, Gerardo Álvarez Hernández
We present a series of four pregnant women with Rocky Mountain spotted fever (RMSF) that occurred in Sonora, Mexico, during 2015-2016. Confirmatory diagnoses were made by polymerase chain reaction or serological reactivity to antigens of Rickettsia rickettsii by using an indirect immunofluorescence antibody assay. Each patient presented with fever and petechial rash and was treated successfully with doxycycline. Each of the women and one full-term infant delivered at 36 weeks gestation survived the infection...
June 12, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28701428/a-mercury-toxicity-case-complicated-by-hyponatremia-and-abnormal-endocrinological-test-results
#14
Matthew Carter, Abdul Abdi, Fareeha Naz, Farouq Thabet, Arpita Vyas
Mercury (Hg) poisoning is considered a rare disease by the National Institutes of Health and the diagnosis can present great challenges to clinicians. Children who are exposed to Hg can present with a wide variety of symptoms, including acrodynia, tremor, excessive salivation, and psychiatric symptoms, including insomnia. However, endocrinologic manifestations from Hg exposure are less well known. This is a case report of a 12-year-old boy who presented with body rash, irritability, insomnia, and profuse sweating after returning from a summer camp...
August 2017: Pediatrics
https://www.readbyqxmd.com/read/28698491/microrna-signature-of-human-microvascular-endothelium-infected-with-rickettsia-rickettsii
#15
Abha Sahni, Hema P Narra, Jignesh Patel, Sanjeev K Sahni
MicroRNAs (miRNAs) mediate gene silencing by destabilization and/or translational repression of target mRNA. Infection of human microvascular endothelial cells as primary targets of Rickettsiarickettsii, the etiologic agent of Rocky Mountain spotted fever, triggers host responses appertaining to alterations in cellular gene expression. Microarray-based profiling of endothelial cells infected with R.rickettsii for 3 or 24 h revealed differential expression of 33 miRNAs, of which miRNAs129-5p, 200a-3p, 297, 200b-3p, and 595 were identified as the top five up-regulated miRNAs (5 to 20-fold, p ≤ 0...
July 9, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28683083/thermal-regimes-of-rocky-mountain-lakes-warm-with-climate-change
#16
James J Roberts, Kurt D Fausch, Travis S Schmidt, David M Walters
Anthropogenic climate change is causing a wide range of stresses in aquatic ecosystems, primarily through warming thermal conditions. Lakes, in response to these changes, are experiencing increases in both summer temperatures and ice-free days. We used continuous records of lake surface temperature and air temperature to create statistical models of daily mean lake surface temperature to assess thermal changes in mountain lakes. These models were combined with downscaled climate projections to predict future thermal conditions for 27 high-elevation lakes in the southern Rocky Mountains...
2017: PloS One
https://www.readbyqxmd.com/read/28680120/post-glacial-biogeography-of-trembling-aspen-inferred-from-habitat-models-and-genetic-variance-in-quantitative-traits
#17
Chen Ding, Stefan G Schreiber, David R Roberts, Andreas Hamann, Jean S Brouard
Using species distribution models and information on genetic structure and within-population variance observed in a series of common garden trials, we reconstructed a historical biogeography of trembling aspen in North America. We used an ensemble classifier modelling approach (RandomForest) to reconstruct palaeoclimatic habitat for the periods 21,000, 14,000, 11,000 and 6,000 years before present. Genetic structure and diversity in quantitative traits was evaluated in common garden trials with 43 aspen collections ranging from Minnesota to northern British Columbia...
July 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28654180/hydrometeorology-organizes-intra-annual-patterns-of-tree-growth-across-time-space-and-species-in-a-montane-watershed
#18
Justin Martin, Nathaniel Looker, Zachary Hoylman, Kelsey Jencso, Jia Hu
Tree radial growth is often systematically limited by water availability, as is evident in tree ring records. However, the physiological nature of observed tree growth limitation is often uncertain outside of the laboratory. To further explore the physiology of water limitation, we observed intra-annual growth rates of four conifer species using point dendrometers and microcores, and coupled these data to observations of water potential, soil moisture, and vapor pressure deficit over 2 yr in the Northern Rocky Mountains, USA...
September 2017: New Phytologist
https://www.readbyqxmd.com/read/28633359/does-long-term-intraoral-service-affect-the-mechanical-properties-and-elemental-composition-of-multistranded-wires-of-lingual-fixed-retainers
#19
Spiros Zinelis, Nikolaos Pandis, Youssef S Al Jabbari, George Eliades, Theodore Eliades
Purpose: The aim of this study was to evaluate the elemental and mechanical alterations of stainless steel (SS) multistranded orthodontic wires used in fixed retention after intraoral ageing. Materials and Methods: Two types of 0.022-inch, seven-stranded wires, Lingual Retainer Wire (LRW) and Tru-Chrome (TCH), from the same manufacturer (Rocky Mountain Orthodontics, Denver, Colo, USA) were tested. Thirty-three samples from LRW group and thirty-seven from TCH were collected, whereas three unused wires from each package were used as controls...
June 15, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/28598270/investigating-the-adult-ixodid-tick-populations-and-their-associated-anaplasma-ehrlichia-and-rickettsia-bacteria-at-a-rocky-mountain-spotted-fever-hotspot-in-western-tennessee
#20
Rebecca T Trout Fryxell, Brain M Hendricks, Kimberly Pompo, Sarah E Mays, Dave J Paulsen, Darwin J Operario, Allan E Houston
Ehrlichiosis and rickettsiosis are two common bacterial tick-borne diseases in the southeastern United States. Ehrlichiosis is caused by ehrlichiae transmitted by Amblyomma americanum and rickettsiosis is caused by rickettsiae transmitted by Amblyomma maculatum and Dermacentor variabilis. These ticks are common and have overlapping distributions in the region. The objective of this study was to identify Anaplasma, Ehrlichia, and Rickettsia species associated with questing ticks in a Rocky Mountain spotted fever (RMSF) hotspot, and identify habitats, time periods, and collection methods for collecting questing-infected ticks...
August 2017: Vector Borne and Zoonotic Diseases
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