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712 results for “tick”
FIGURE 5 in Holothyrids And Ticks: New Insights From Larval Morphology And Dna Sequencing, With The Description Of A New Species Of Diplothyrus (Parasitiformes: Neothyridae)
FIGURE 5: Diplothyrus lecorrei n. sp. Female. (a) – chelicera (details of whole chelicera and membranous outgrowth); (b) – palp, anterolateral (left) and posterolateral (right) views (setae drawn in dashed lines not consistently present); (c) – subcapitulum; (d) – genital area (arrow indicates presumed latigynal shield), open circles: setal bases, filled grey circles: pores; (e) – pretarsus II. Scale bars = 200 µm.
FIGURE 3 in Holothyrids And Ticks: New Insights From Larval Morphology And Dna Sequencing, With The Description Of A New Species Of Diplothyrus (Parasitiformes: Neothyridae)
FIGURE 3: Diplothyrus lecorrei n. sp. Larva, idiosoma, reconstructed. (a) – dorsal view; (b) – ventral view. Scale bar = 100 µm.
FIGURE 1 in Holothyrids And Ticks: New Insights From Larval Morphology And Dna Sequencing, With The Description Of A New Species Of Diplothyrus (Parasitiformes: Neothyridae)
FIGURE 1: Previous hypotheses of subordinal relationships in the Parasitiformes. (a) – Baker and Wharton (1952); (b) – Norton et al. (1993); (c) – Lehtinen (1991); (d) – Murrell et al. (2005)
FIGURE 2 in Holothyrids And Ticks: New Insights From Larval Morphology And Dna Sequencing, With The Description Of A New Species Of Diplothyrus (Parasitiformes: Neothyridae)
FIGURE 2: Diplothyrus lecorrei n. sp. Larva, gnathosoma. (a) – chelicera; (b) – palp, anterolateral view; (c) – palp tarsus, detail, anterolateral view; (d) – subcapitulum. Scale for a, b, d identical, scale bar = 100 µm; scale bar for c = 50 µm.
FIGURE 4 in Holothyrids And Ticks: New Insights From Larval Morphology And Dna Sequencing, With The Description Of A New Species Of Diplothyrus (Parasitiformes: Neothyridae)
FIGURE 4: Diplothyrus lecorrei n. sp. Larva, legs. (a) – leg I; (b) – detail tarsus I; (c) – leg II; (d) – leg III. Scale bar for a, c, d = 100 µm.
FIGURE 7 in Holothyrids And Ticks: New Insights From Larval Morphology And Dna Sequencing, With The Description Of A New Species Of Diplothyrus (Parasitiformes: Neothyridae)
FIGURE 7: Single most parsimonious tree using a combination of DNA sequence data for three genes (18S rRNA, 28S rRNA and EF-1α). Numbers above branches: Bremer support/jackknife support (parsimony analysis); below branches: posterior probability (Bayesian analysis). xx: branch not supported in Bayesian analysis.
FIGURE 1 in The Fate And Status Of The Supposed Fossil Tick Ixodes Tertiarius Scudder, 1885
FIGURE 1: Facsimile copy of a drawing of Ixodes tertiarius Scudder, 1885 from the Eocene of Green River, Wyoming, USA; reproduced from Scudder (1890, Pl. VI, fig. 12). While possibly a mite, the illustration does not reveal any obvious characters of Ixodes, or of Ixodida in general. Since the type is missing, presumed lost (see text), the name is treated here as a nomen dubium.
Figure 3 in Morphological observations of fluorescence in different tick species (Family: Ixodidae)
Figure 3 Fluorescent (UV, 360-380 nm) micrograph of the ventral view of an Ixodes scapularismale.
Figure 2 in Morphological observations of fluorescence in different tick species (Family: Ixodidae)
Figure 2 Fluorescent (RB, 440-460 nm) ventral micrographs of Amblyomma americanum male (left)
Figure 6 in Exploiting assembly pheromone for the control of ixodid ticks
Figure 6 Comparison of the per cent attraction of adult ticks after 24 hours.
Figure 5 in Exploiting assembly pheromone for the control of ixodid ticks
Figure 5 Comparison of the per cent attraction of ixodid tick larvae after 24 hours.
FIGURE 3 in Laboratory Artificial Infection Of Hard Ticks: A Tool For The Analysis Of Tick-Borne Pathogen Transmission
FIGURE 3: Diagram of the membrane feeding apparatus used in the experimental feeding of Ixodes ricinus ticks (adapted from Bonnet et al. 2007).
FIGURE 1 in Laboratory Artificial Infection Of Hard Ticks: A Tool For The Analysis Of Tick-Borne Pathogen Transmission
FIGURE 1: Views of Ixodes ricinus feeding in the laboratory on A – rabbit, and B – Siberian chipmunks (Tamias sibiricus barberi). On rabbits, ticks were put in an ear-bag which was placed on shaved ear skin and sealed with tape at the base. Ticks were checked daily until repletion, and were then collected and stored under standardized conditions. For chipmunks, animals were briefly anaesthetized with 3 % Isoflorane and a plastic cap, open at both ends, was glued onto their shaved back with wax. Hungry larvae and nymphs were placed in the cap, which was then sealed with tape. Ticks were allowed to feed until repletion for 5-6 days. At this time, the cap was opened, and the engorged ticks were collected and stored under standardized conditions.
Prevalence of Borrelia burgdorferi and diversity of its outer surface protein C (ospC) alleles in blacklegged ticks (Ixodes scapularis) in Delaware
<p>Characterizing the diversity of genes associated with virulence and transmission of a pathogen across the pathogen's distribution can inform our understanding of host infection risk. <em>Borrelia burgdorferi</em> is a vector-borne bacterium that causes Lyme disease in humans and is common in the United States. The outer surface protein C (<em>ospC</em>) gene of <em>B</em>. <em>burgdorferi</em> exhibits substantial genetic variation across the pathogen's distribution and plays a critical role in virulence and transmission in vertebrate hosts. In fact, <em>B. burgdorferi </em>infections that disseminate across host tissues in humans are associated with only a subset of <em>ospC</em> alleles. Delaware has a high incidence of Lyme disease, but the diversity of <em>ospC</em> in <em>B. burgdorferi</em> in the state has not been evaluated. We used PCR to amplify <em>ospC</em> in <em>B. burgdorferi</em>-infected blacklegged ticks (<em>Ixodes</em> <em>scapularis</em>) in sites statewide and used short-read sequencing to identify <em>ospC</em> alleles. <em>B. burgdorferi</em> prevalence in blacklegged ticks varied across sites, but not significantly so. We identified 15 previously characterized <em>ospC</em> alleles accounting for nearly all of the expected diversity of alleles across the sites as estimated using the Chao1 index. Nearly 40% of sequenced infections (23/58) had more than one <em>ospC</em> allele present suggesting mixed strain infections and the relative frequencies of alleles in single infections were positively correlated with their relative frequencies in mixed infections. Turnover of ospC alleles was positively related to distance between sites with closer sites having more similar allele compositions than more distant sites. This suggests a degree of <em>B. burgdorferi</em> dispersal limitation or habitat specialization. <em>OspC</em> alleles known to cause disseminated infections in humans were found at the highest frequencies across sites, corresponding to Delaware's high incidence of Lyme disease.</p>
Raw 16S data taken from Ixodes scapularis ticks in the US Midwest 2017-2019
<p>Raw 16S data from Ixodes scapularis ticks in the US Midwest 2017-2019. See https://www.biorxiv.org/content/10.1101/2022.11.06.515366v1 for the methods used to generate this data</p>
Guinea Pig Skin & Tick Bite Site - Widefield H&E Reference Images
<p>Underlying H&E stained guinea pig skin from control (unbitten) and tick-bitten skin. Ticks: nymphal <em>Ixodes scapularis</em>. These images are reference files for the positive and negative mode MALDI-FTICR (MSI) images collected for lipids. Collected on a Zeiss AxioImager M2 using an in-built default stitching function. Native files: .czi can be opened in Zen Lite or Zen Pro.</p>
Figure 1 in The Eldari tick Ixodes eldaricus (Acari: Ixodidae) in Israel: its occurrence, morphometric and biological characteristics
Figure 1. No of ticks collected in the survey area (vertical axis – No of ticks).
Figure 1 in Species composition of hard ticks (Acari: Ixodidae) on domestic animals and their public health importance in Tamil Nadu, South India
Figure 1. Localities where the field work was carried out in Madurai district.
Environmental variables serve as predictors of the exotic and invasive Asian longhorned tick (Haemaphysalis longicornis Neumann): an approach for targeted tick surveillance
<p>Since the 2017 discovery of established populations of the Asian longhorned tick, (<em>Haemaphysalis longicornis </em>Neumann) in the United States, populations continue to be detected in new areas. For this exotic and invasive species, capable of transmitting a diverse repertoire of pathogens and blood-feeding on a variety of host species, there remains a lack of targeted information on how to best prepare for this tick and understand when and where it occurs. To fill this gap, we conducted two years of weekly tick surveillance at four farms in Tennessee (three <em>H. longicornis</em>-infested and one without) to identify environmental factors associated with each questing life stage, to investigate predictors of abundance, and to determine the likelihood of not collecting ticks at different life stages. A total of 46,770 ticks were collected, of which 12,607 <em>H. longicornis</em> and five other tick species were identified. Overall, abundance of <em>H. longicornis </em>was associated with spring and summer seasons, forested environments, relative humidity and barometric pressure, sunny conditions, and in relation with other tick species. The likelihood of not collecting <em>H. longicornis</em> was associated with day length and barometric pressure. Additional associations for different life stages were also identified and included other tick species, climatic variables, and environmental conditions. Here, we demonstrated that environmental variables can be useful to predict the presence of questing <em>H. longicornis</em> and provide ideas on how to use this information to develop a surveillance plan for different southeastern areas with and without infestations.</p>
Tick-borne Illness and Clothing Study
ClinicalTrials.gov study NCT01454414. IPD Sharing: Not stated. Countries: 1. Publications: 1.
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Allen Brain Atlas
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DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.