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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
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
https://www.readbyqxmd.com/read/29049389/endemic-chronic-wasting-disease-causes-mule-deer-population-decline-in-wyoming
#13
Melia T DeVivo, David R Edmunds, Matthew J Kauffman, Brant A Schumaker, Justin Binfet, Terry J Kreeger, Bryan J Richards, Hermann M Schätzl, Todd E Cornish
Chronic wasting disease (CWD) is a fatal transmissible spongiform encephalopathy affecting white-tailed deer (Odocoileus virginianus), mule deer (Odocoileus hemionus), Rocky Mountain elk (Cervus elaphus nelsoni), and moose (Alces alces shirasi) in North America. In southeastern Wyoming average annual CWD prevalence in mule deer exceeds 20% and appears to contribute to regional population declines. We determined the effect of CWD on mule deer demography using age-specific, female-only, CWD transition matrix models to estimate the population growth rate (λ)...
2017: PloS One
https://www.readbyqxmd.com/read/29032899/th1-epitope-peptides-induce-protective-immunity-against-rickettsia-rickettsii-infection-in-c3h-hen-mice
#14
Wenping Gong, Xiaolu Xiong, Pengcheng Wang, Jun Jiao, Xiaomei Yang, Bohai Wen
Rickettsia rickettsii is the causative pathogen of Rocky Mountain spotted fever (RMSF). Adr2, YbgF and OmpB are protective antigens of R. rickettsii. In this study, 90 candidate peptides were selected from these antigens based on their high-affinity binding capacity for the MHC class II molecule H2 I-A or H2 I-E using bioinformatic methods. Six peptides were determined using ELISPOT assay to be immunodominant based on the IFN-γ recall responses of CD4(+) T cells from mice immunized with R. rickettsii. Six nucleotide sequences encoding the immunodominant peptides were linked in series and inserted into a plasmid for expression in Escherichia coli cells, resulting in a new, recombinant polypeptide termed GWP...
October 9, 2017: Vaccine
https://www.readbyqxmd.com/read/28981540/density-dependent-signaling-an-alternative-hypothesis-on-the-function-of-chemical-signaling-in-a-non-territorial-solitary-carnivore
#15
Clayton T Lamb, Garth Mowat, Sophie L Gilbert, Bruce N McLellan, Scott E Nielsen, Stan Boutin
Brown bears are known to use rubbing behavior as a means of chemical communication, but the function of this signaling is unclear. One hypothesis that has gained support is that male bears rub to communicate dominance to other males. We tested the communication of dominance hypothesis in a low-density brown bear population in southeast British Columbia. We contrasted rubbing rates for male and female bears during and after the breeding season using ten years of DNA-mark-recapture data for 643 individuals. Here we demonstrate that male brown bears rub 60% more during the breeding than the non-breeding season, while female rubbing had no seasonal trends...
2017: PloS One
https://www.readbyqxmd.com/read/28977770/corynebacterium-pseudotuberculosis-and-copper-deficiency-in-a-male-rocky-mountain-bighorn-sheep-ovis-canadensis-canadensis-in-utah-usa
#16
E Jane Kelly, Annette Roug, Covy Jones, Josee Seamons, Jeffery O Hall
In 2015, an emaciated Rocky Mountain bighorn (Ovis canadensis) ram was submitted to the Utah Veterinary Diagnostic Laboratory for necropsy. There were numerous thick-walled abscesses subcutaneously and internally, and Corynebacterium pseudotuberculosis was isolated in pure culture. In addition, the ram was severely copper deficient, with a liver copper concentration of 1.6 mg/kg.
October 4, 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/28962029/developing-a-degree-day-model-to-predict-billbug-coleoptera-curculionidae-seasonal-activity-in-utah-and-idaho-turfgrass
#17
Madeleine M Dupuy, James A Powell, Ricardo A Ramirez
Billbugs are native pests of turfgrass throughout North America, primarily managed with preventive, calendar-based insecticide applications. An existing degree-day model (lower development threshold of 10°C, biofix 1 March) developed in the eastern United States for bluegrass billbug, Sphenophorus parvulus (Gyllenhal; Coleoptera: Curculionidae), may not accurately predict adult billbug activity in the western United States, where billbugs occur as a species complex. The objectives of this study were 1) to track billbug phenology and species composition in managed Utah and Idaho turfgrass and 2) to evaluate model parameters that best predict billbug activity, including those of the existing bluegrass billbug model...
September 7, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28961914/milkweed-matters-monarch-butterfly-lepidoptera-nymphalidae-survival-and-development-on-nine-midwestern-milkweed-species
#18
COMPARATIVE STUDY
V M Pocius, D M Debinski, J M Pleasants, K G Bidne, R L Hellmich, L P Brower
The population of monarch butterflies east of the Rocky Mountains has experienced a significant decline over the past 20 yr. In order to increase monarch numbers in the breeding range, habitat restoration that includes planting milkweed plants is essential. Milkweeds in the genus Asclepias and Cynanchum are the only host plants for larval monarch butterflies in North America, but larval performance and survival across nine milkweeds native to the Midwest is not well documented. We examined development and survival of monarchs from first-instar larval stages to adulthood on nine milkweed species native to Iowa...
October 1, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28961911/3-methylcyclohex-2-en-1-one-for-area-and-individual-tree-protection-against-spruce-beetle-coleoptera-curculionidae-scolytinae-attack-in-the-southern-rocky-mountains
#19
E Matthew Hansen, A Steven Munson, Darren C Blackford, Andrew D Graves, Tom W Coleman, L Scott Baggett
We tested 3-methylcyclohex-2-en-1-one (MCH) and an Acer kairomone blend (AKB) as repellent semiochemicals for area and single tree protection to prevent spruce beetle (Dendroctonus rufipennis Kirby) attacks at locations in Utah and New Mexico. In the area protection study, we compared host infestation rates of MCH applications at three densities (20, 40, and 80 g MCH ha-1) against a control treatment over 0.64 ha plots centered within ~1.25 ha treatment blocks. All treatments included two baited funnel traps within the plot to assure spruce beetle pressure...
September 7, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28930006/fatal-rocky-mountain-spotted-fever-along-the-united-states-mexico-border-2013-2016
#20
Naomi A Drexler, Hayley Yaglom, Mariana Casal, Maria Fierro, Paula Kriner, Brian Murphy, Anne Kjemtrup, Christopher D Paddock
Rocky Mountain spotted fever (RMSF) is an emerging public health concern near the US-Mexico border, where it has resulted in thousands of cases and hundreds of deaths in the past decade. We identified 4 patients who had acquired RMSF in northern Mexico and subsequently died at US healthcare facilities. Two patients sought care in Mexico before being admitted to US-based hospitals. All patients initially had several nonspecific signs and symptoms, including fever, headache, nausea, vomiting, or myalgia, but deteriorated rapidly without receipt of a tetracycline-class antimicrobial drug...
October 2017: Emerging Infectious Diseases
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