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https://www.readbyqxmd.com/read/29430754/host-pathogen-metapopulation-dynamics-suggest-high-elevation-refugia-for-boreal-toads
#1
Brittany A Mosher, Larissa L Bailey, Erin Muths, Kathryn P Huyvaert
Emerging infectious diseases are an increasingly common threat to wildlife. Chytridiomycosis, caused by the fungal pathogen Batrachochytrium dendrobatidis (Bd), is an emerging infectious disease that has been linked to amphibian declines around the world. Few studies exist that explore amphibian-Bd dynamics at the landscape scale, limiting our ability to identify which factors are associated with variation in population susceptibility and to develop effective in situ disease management. Declines of boreal toads (Anaxyrus boreas boreas) in the Southern Rocky Mountains are largely attributed to chytridiomycosis but variation exists in local extinction of boreal toads across this metapopulation...
February 12, 2018: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/29421873/phosphorous-speciation-and-solubility-in-aeolian-dust-deposited-in-the-interior-american-west
#2
Zhuojun Zhang, Harland L Goldstein, Richard Reynolds, Yongfeng Hu, Xiaoming Wang, Mengqiang Zhu
Aeolian dust is a significant source of phosphorus (P) to alpine oligotrophic lakes, but P speciation in dust and source sediments, and its release kinetics to lake water, remain unknown. Phosphorous K-edge XANES spectroscopy shows that calcium-bound P (Ca-P) is dominant in 10 of 12 dust samples (41 - 74%) deposited on snow in the central Rocky Mountains and all 42 source sediment samples (the fine fraction) (68 - 80%), with a lower proportion in dust probably because acidic snowmelt dissolves some Ca-P in dust before collection...
February 8, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/29411031/prevalence-of-fetal-alcohol-spectrum-disorders-in-4-us-communities
#3
Philip A May, Christina D Chambers, Wendy O Kalberg, Jennifer Zellner, Haruna Feldman, David Buckley, David Kopald, Julie M Hasken, Ronghui Xu, Gordon Honerkamp-Smith, Howard Taras, Melanie A Manning, Luther K Robinson, Margaret P Adam, Omar Abdul-Rahman, Keith Vaux, Tamison Jewett, Amy J Elliott, Julie A Kable, Natacha Akshoomoff, Daniel Falk, Judith A Arroyo, Dale Hereld, Edward P Riley, Michael E Charness, Claire D Coles, Kenneth R Warren, Kenneth Lyons Jones, H Eugene Hoyme
Importance: Fetal alcohol spectrum disorders are costly, life-long disabilities. Older data suggested the prevalence of the disorder in the United States was 10 per 1000 children; however, there are few current estimates based on larger, diverse US population samples. Objective: To estimate the prevalence of fetal alcohol spectrum disorders, including fetal alcohol syndrome, partial fetal alcohol syndrome, and alcohol-related neurodevelopmental disorder, in 4 regions of the United States...
February 6, 2018: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/29405797/new-immobilization-guidelines-change-ems-critical-thinking-in-older-adults-with-spine-trauma
#4
Linda Underbrink, Alice Twink Dalton, Jan Leonard, Pamela W Bourg, Abigail Blackmore, Holly Valverde, Thomas Candlin, Lisa M Caputo, Christopher Duran, Sherrie Peckham, Jeff Beckman, Brandon Daruna, Krista Furie, Debra Hopgood
OBJECTIVE: The impact of immobilization techniques on older adult trauma patients with spinal injury has rarely been studied. Our advisory group implemented a change in the immobilization protocol used by emergency medical services (EMS) professionals across a region encompassing 9 trauma centers and 24 EMS agencies in a Rocky Mountain state using a decentralized process on July 1, 2014. We sought to determine whether implementing the protocol would alter immobilization methods and affect patient outcomes among adults ≥60 years with a cervical spine injury...
February 6, 2018: Prehospital Emergency Care
https://www.readbyqxmd.com/read/29363458/case-report-a-case-of-colorado-tick-fever-acquired-in-southwestern-saskatchewan
#5
Kamran Kadkhoda, Michael Semus, Tom Jelic, Andrew Walkty
Colorado tick fever virus is transmitted by Dermacentor andersoni ticks. In Canada, these ticks are found in the southern regions of British Columbia (Rocky Mountains) and Alberta, as well as southwestern Saskatchewan. Colorado tick fever should be clinically suspected in patients presenting with a biphasic febrile illness and leukopenia following tick exposure in the appropriate geographic area.
January 22, 2018: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29330526/relationship-among-land-surface-temperature-and-lucc-ndvi-in-typical-karst-area
#6
Yuanhong Deng, Shijie Wang, Xiaoyong Bai, Yichao Tian, Luhua Wu, Jianyong Xiao, Fei Chen, Qinghuan Qian
Land surface temperature (LST) can reflect the land surface water-heat exchange process comprehensively, which is considerably significant to the study of environmental change. However, research about LST in karst mountain areas with complex topography is scarce. Therefore, we retrieved the LST in a karst mountain area from Landsat 8 data and explored its relationships with LUCC and NDVI. The results showed that LST of the study area was noticeably affected by altitude and underlying surface type. In summer, abnormal high-temperature zones were observed in the study area, perhaps due to karst rocky desertification...
January 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29299245/distinguish-water-utilization-strategies-of-trees-growing-on-earth-rocky-mountainous-area-with-transpiration-and-water-isotopes
#7
Guodong Jia, Ziqiang Liu, Lixin Chen, Xinxiao Yu
Water stress is regarded as a global challenge to forests. Unlike other water-limited areas, the water use strategies of rocky mountainous forests, which play an important ecohydrological role, have not received sufficient attention. To prove our hypothesis that species adopt different water use strategies to avoid competition of limited water resources, we used site abiotic monitoring, sap flow and stable isotope method to study the biophysiological responses and water use preferences of two commonly distributed forest species, Pinus tabuliformis (Pt) and Quercus variabilis (Qv)...
December 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/29279696/immune-thrombocytopenia-as-a-consequence-of-rocky-mountain-spotted-fever
#8
Cherisse Baldeo, Karan Seegobin, Lara Zuberi
Primary immune thrombocytopenia (ITP) - also called idiopathic thrombocytopenic purpura or immune thrombocytopenic purpura - is an acquired thrombocytopenia caused by autoantibodies against platelet antigens. It is one of the more common causes of thrombocytopenia in otherwise asymptomatic adults. Rocky Mountain spotted fever (RMSF) is a potentially lethal, but curable, tick-borne disease. We present a case of ITP that was triggered by RMSF.
September 2017: Case Reports in Oncology
https://www.readbyqxmd.com/read/29209593/analysis-of-the-salivary-gland-transcriptome-of-unfed-and-partially-fed-amblyomma-sculptum-ticks-and-descriptive-proteome-of-the-saliva
#9
Eliane Esteves, Sandra R Maruyama, Rebeca Kawahara, André Fujita, Larissa A Martins, Adne A Righi, Francisco B Costa, Giuseppe Palmisano, Marcelo B Labruna, Anderson Sá-Nunes, José M C Ribeiro, Andréa C Fogaça
Ticks are obligate blood feeding ectoparasites that transmit a wide variety of pathogenic microorganisms to their vertebrate hosts. Amblyomma sculptum is vector of Rickettsia rickettsii, the causative agent of Rocky Mountain spotted fever (RMSF), the most lethal rickettsiosis that affects humans. It is known that the transmission of pathogens by ticks is mainly associated with the physiology of the feeding process. Pathogens that are acquired with the blood meal must first colonize the tick gut and later the salivary glands (SG) in order to be transmitted during a subsequent blood feeding via saliva...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/29187607/interactions-between-cleaner-birds-and-ungulates-are-personality-dependent
#10
Rob Found
While a growing body of literature explores the ecological implications of consistent individual variation in the behaviour of wildlife, few studies have looked at the reciprocal influences of personality within interspecific interactions, despite the potentially significant impacts on biodiversity. Here I used two species involved in cleaner-bird behaviour-black-billed magpies (Pica pica) and Rocky mountain elk (Cervus canadensis)-to show that the exhibition of mutualistic behaviour can depend on the personality of the individual involved...
November 2017: Biology Letters
https://www.readbyqxmd.com/read/29152186/cumulative-effects-of-climate-and-landscape-change-drive-spatial-distribution-of-rocky-mountain-wolverine-gulo-gulo-l
#11
Nicole Heim, Jason T Fisher, Anthony Clevenger, John Paczkowski, John Volpe
Contemporary landscapes are subject to a multitude of human-derived stressors. Effects of such stressors are increasingly realized by population declines and large-scale extirpation of taxa worldwide. Most notably, cumulative effects of climate and landscape change can limit species' local adaptation and dispersal capabilities, thereby reducing realized niche space and range extent. Resolving the cumulative effects of multiple stressors on species persistence is a pressing challenge in ecology, especially for declining species...
November 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/29148888/tissue-residue-levels-after-immobilization-of-rocky-mountain-elk-cervus-elaphus-nelsoni-using-a-combination-of-nalbuphine-medetomidine-and-azaperone-antagonized-with-naltrexone-atipamezole-and-tolazoline
#12
Lisa L Wolfe, Pauline Nol, Matthew P McCollum, Travis Mays, Morgan E Wehtje, William R Lance, Mark C Fisher, Michael W Miller
Previous studies demonstrated that nalbuphine, medetomidine, and azaperone (NalMed-A) can effectively immobilize adult elk (Cervus elaphus nelsoni), and be antagonized using naltrexone and atipamezole, with or without tolazoline. To assess duration of tissue residues for this immobilization package, we immobilized 14 captive adult elk with NalMed-A, then euthanized animals and collected tissues 0, 3, 6, 14, 21, or 28 d later. Except for two animals euthanized immediately, all elk were recovered using naltrexone, atipamezole, and tolazoline...
November 17, 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/29133072/treatment-of-pediatric-black-widow-spider-envenomation-a-national-poison-center-s-experience
#13
Miguel Glatstein, Gary Carbell, Dennis Scolnik, Ayelet Rimon, Christopher Hoyte
BACKGROUND: Black widow species (Latrodectus species) envenomation can produce a syndrome characterized by painful muscle rigidity and autonomic disturbances. Symptoms tend to be more severe in young children and adults. We describe black widow spider exposures and treatment in the pediatric age group, and investigate reasons for not using antivenom in severe cases. METHODS: All black widow exposures reported to the Rocky Mountain Poison Center between January 1, 2012, and December 31, 2015, were reviewed...
November 6, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29124098/forest-harvest-dataset-for-northern-colorado-rocky-mountains-1984-2015-generated-from-a-landsat-time-series-and-existing-forest-harvest-records
#14
Brian Woodward, Peder Engelstad, Anthony Vorster, Christopher Beddow, Stephanie Krail, Amandeep Vashisht, Paul Evangelista
This dataset provides a shapefile containing approximately 3500 polygons with the location, extent, size, and year of clearcut harvest events occurring between 1984 and 2015 in forested areas of the northern Colorado, Landsat WRS-2 scene Path 034, Row 032. Harvest events were modeled and mapped using a 32 year time series of Landsat imagery, the LandTrendr algorithm, and ancillary datasets. The dataset also conveys information on the elevation, aspect, ownership, distance to roads, and the watershed where each harvest event occurred...
December 2017: Data in Brief
https://www.readbyqxmd.com/read/29118652/isoetes-nana-a-new-species-from-the-coastal-mountains-of-southeastern-brazil
#15
Jovani B S Pereira, Thomas Stützel, Christian Schulz
Isoetes nana, a new species from the coastal mountains of southeastern Brazil (Serra de Itatiaia), is described, illustrated and compared to similar species. This species can be distinguished from similar species by a set of characters that include 5-15 small erect leaves reaching only up to 3.5cm long, megaspores rugulate (rarely laevigate or obscurely cristate) and microspores sparsely echinate. We include a key to identify this new species and spore images for all species that are discussed in this study...
2017: PhytoKeys
https://www.readbyqxmd.com/read/29118621/a-new-species-of-trachymyrmex-hymenoptera-formicidae-fungus-growing-ant-from-the-sierra-madre-oriental-of-northeastern-mexico
#16
Sergio R Sánchez-Peña, Manuela Citlali Chacón-Cardosa, Ricardo Canales-Del-Castillo, Lauren Ward, Diana Resendez-Pérez
Here we describe a new species of Trachymyrmex, T. pakawasp. n., from the Gran Sierra Plegada range of the Sierra Madre Oriental, in the states of Coahuila and Nuevo Leon, northeastern Mexico. Trachymyrmex pakawa is a large-sized species compared to other North American Trachymyrmex. Its geographic distribution includes the piedmont of the Gran Sierra Plegada at La Estanzuela, Monterrey, as well as peripheral mountains segregated from the Sierra Madre Oriental (Cerro de las Mitras, Sierra de Zapalinamé, Cañon de San Lorenzo, Cerro de las Letras)...
2017: ZooKeys
https://www.readbyqxmd.com/read/29117106/the-17th-rocky-mountain-virology-association-meeting
#17
Joel Rovnak, Rushika Perera, Matthew W Hopken, Jenna Read, Derrick M Waller, Randall J Cohrs
Since 2000, scientists and students from the greater Rocky Mountain region, along with invited speakers, both national and international, have gathered at the Mountain Campus of Colorado State University to discuss their area of study, present recent findings, establish or strengthen collaborations, and mentor the next generation of virologists and prionologists through formal presentations and informal discussions concerning science, grantsmanship and network development. This year, approximately 100 people attended the 17th annual Rocky Mountain Virology Association meeting, that began with a keynote presentation, and featured 29 oral and 35 poster presentations covering RNA and DNA viruses, prions, virus-host interactions and guides to successful mentorship...
November 8, 2017: Viruses
https://www.readbyqxmd.com/read/29104433/species-conservation-profile-of-the-rare-and-endemic-trapdoor-spider-calathotarsus-simoni-araneae-migidae-from-central-argentina
#18
Nelson Ferretti, Gabriel Pompozzi, Pedro Cardoso
Background: Calathotarsus simoni Schiapelli & Gerschman 1975 is the only species of Migidae in Argentina. It is a rare and endemic spider only found in relict grassland of mountain systems in the province of Buenos Aires. This species is a habitat specialist spider occupying specific areas with certain microclimatic conditions on hilly and rocky grassland areas at about 500-1500 meters above sea level. New information: The observed extent of occurrence (EOO) is 7207 km(2) and the area of occupancy (AOO) is 16 km(2)...
2017: Biodiversity Data Journal
https://www.readbyqxmd.com/read/29082471/tropidurus-torquatus-squamata-tropiduridae-as-a-bioindicator-of-heavy-metal-aluminum-and-zinc-pollution-in-vila-velha-brazil
#19
Raiza Menezes Venturim Salvador, Fernanda Pim, Hermínio Arias Nalini Júnior, Adriana Trópia de Abreu, Elisângela Flavia Pimentel, Lorena Oliveira de Cerqueira, Paulo Dias Ferreira Junior, Denise Coutinho Endringer
Urbanization is responsible for numerous environmental changes including pollution. Information on the susceptibility of reptiles to environmental contaminants is relatively scarce. Tropidurus torquatus represents a potential bioindicator of heavy metal pollution. Levels of heavy metals in tissues from T. torquatus depend on bioavailability and vary among different populations. The aim of this study was to determine the heavy metal concentration in liver and fat tissue of T. torquatus from three distinct populations in the state of Espírito Santo, Brazil...
October 29, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29053431/survey-of-gross-and-histopathologic-findings-in-two-wintering-subpopulations-of-sandhill-cranes-antigone-canadensis
#20
Martha Hensel, Miranda Bertram, Raquel Rech, Gabriel L Hamer, Sarah A Hamer
Sandhill Cranes (Antigone canadensis) of the midcontinent population (MCP) and Rocky Mountain population (RMP) are migratory game birds with stable populations that travel between Canada and the southern USA and Mexico. In the winters of 2012-14, we performed gross and histologic examinations of 43 hunter-harvested Sandhill Cranes in Texas (MCP) and New Mexico (RMP) to assess the impact of disease on populations. Lesions were significantly more common in the MCP relative to the RMP, likely reflecting differential environmental exposure to pathogens and parasites...
October 20, 2017: Journal of Wildlife Diseases
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