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712 results for “tick”
Figure 1. A in Capturing migratory birds and examining for ticks (Acari: Ixodida)
Figure 1. A. Erected mist net in Cernek bird ringing station, B. Caught birds in mist net, C. A Garden Warbler, Sylvia borin, captured by mist net.
Figure 3 in The study of exposure times and dose-escalation of tick saliva on mouse embryonic stem cell proliferation
Figure 3. Effect of D. marginatus SGE (0-160 µg/ml) on mouse embryonic stem cell proliferation and viability. Values represent relative fold change of cell viability normalized to untreated negative control. The Geisser–Greenhouse correction and Dunnett´s test on multiple comparison were used. All experiments have the P value <0.05, on three different time laps. The results are mean ± standard deviation (SD) from a representative experiment carried out in triplicate and were seeded in equal amount in 3 different 96-well cultured plates.
Figure 2 in The study of exposure times and dose-escalation of tick saliva on mouse embryonic stem cell proliferation
Figure 2. Effect of R. bursa SGE (0-160 µg/ml) on mouse embryonic stem cell proliferation and viability. Values represent relative fold change of cell viability normalized to untreated negative control. The Geisser–Greenhouse correction and Dunnett´s test on multiple comparison were used. The results are mean ± standard deviation (SD) from a representative experiment carried out in triplicate and were seeded in equal amount in 3 different 96-well cultured plates.
Influence of endosymbionts on the reproductive fitness of the tick Ornithodoros moubata tested through elimination of the microbiota using antibiotic treatments
<p class="MsoNoSpacing">Over the past ten years, many studies demonstrated the crucial role of the tick microbiome in tick biology. The soft tick <em>Ornithodoros moubata</em> is a hematophagous ectoparasite of Suidae particularly known to transmit the African swine fever virus. Its bacterial microbiota is characterized by a high prevalence of <em>Francisella</em>-like and <em>Rickettsia</em> endosymbionts. The present study aims to better understand the potential influence of the microbiota on the reproductive fitness of <em>O. moubata</em>. A total of 132 adult female ticks were treated using gentamycin or rifampicin added to the blood meal. Half of the ticks also received a supplementation with B vitamins to address the nutritional role of endosymbionts. Over two periods of 50 days, several traits related to reproductive fitness were monitored to investigate the importance of <em>Francisella</em> and <em>Rickettsia</em> for those traits. It appeared that most of the considered reproductive parameters were not affected. However, antibiotic treatments induced an increase in the tick survival indicating a potential fitness cost of harboring endosymbionts for ticks during the reproduction period. Similarly, 366 first-stage nymphs of <em>Ornithodoros moubata</em> were exposed to the same treatments for molecular quantification of both endosymbionts. Results from qPCR suggested that treatments produced a bacteriostatic effect on endosymbionts without fully eliminating <em>Francisella</em> or <em>Rickettsia</em>.</p>
Tejon Ranch Exclosure Experiment - Tick (family Ixodidae: subclass Acari) and Small Vertebrate Responses
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Climate-associated variation in the within-season dynamics of juvenile ticks in California
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Comparative ecological analysis and predictive modeling of tick-borne pathogens
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Data from: Wildfire disturbance and ecological cascades: teasing apart the direct and indirect effects of fire on tick populations
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Ecological interactions driving population dynamics of two tick-borne pathogens, Borrelia burgdorferi and Babesia microti
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Landscape connectivity, habitat isolation, and tick-borne pathogen ecology
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Data for: Off-host survival of blacklegged ticks in eastern North America: A multi-stage, multi-year, and multi-site study
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Influence of endosymbionts on the reproductive fitness of the tick Ornithodoros moubata tested through elimination of the microbiota using antibiotic treatments
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Data from: A novel laboratory method to simulate climatic stress with successful application to experiments with medically relevant ticks
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Data for: Multi-omics analysis identifies symbionts and pathogens of blacklegged ticks (Ixodes scapularis) from a Lyme disease hotspot in southeastern Ontario, Canada
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Data from: Responses of juvenile blacklegged ticks (Acari: Ixodidae) to hosts of varying quality
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Bloodmeal metabarcoding of the argasid tick (Ornithodoros turicata Dugès) reveals extensive vector-host associations
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Data from: Accounting for missing ticks: Use (or lack thereof) of hierarchical models in tick ecology studies
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Sand lizards (Lacerta agilis) decrease nymphal infection prevalence for tick-borne pathogens Borrelia burgdorferi sensu lato and Anaplasma phagocytophilum in a coastal dune ecosystem
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Repeatable differences in exploratory behaviour predict tick infestation probability in wild great tits
Abstract Ecological factors and individual-specific traits affect parasite infestation in wild animals. Ixodid ticks are important ectoparasites of various vertebrate hosts, which include passerine bird species such as the great tit (Parus major). We studied various key ecological variables (breeding density, human disturbance) and phenotypic traits (exploratory behaviour, body condition) proposed to predict tick infestation probability and burden in great tits. Our study spanned 3 years and 12 nest box plots located in southern Germany. Breeding, adult great tits were assessed for exploration behaviour, body condition, and tick burden. Plots were open to human recreation; human disturbance was quantified in each plot as a recreation pressure index from biweekly nest box inspections. Infested individuals were repeatable in tick burden across years. These repeatable among-individual differences in tick burden were not attributable to exploration behaviour. However, faster explorers did have a higher infestation probability. Furthermore, body condition was negatively correlated to tick burden. Recreation pressure was correlated to increased infestation probability, although this relationship was just above the threshold of statistical significance. Our study implies that avian infestation probability and tick burden are each determined by distinct phenotypic traits and ecological factors. Our findings highlight the importance of animal behaviour and human disturbance in understanding variation in tick burden among avian hosts. Significance statement Various abiotic and biotic factors, including personality type, influence tick parasitism in birds, but exactly how all these factors interplay remains unclear. We studied a wild population of great tits over a 3-year period and assessed birds for their exploration behaviour and tick infestation. We found that more explorative great tits were more likely to be infested with ticks. By contrast, faster explorers did not have higher tick burdens. Tick burden was nevertheless moderately repeatable among individuals. Our results imply that animal personality influences the probability of parasite infestation, and that infestation likelihood versus intensity are determined by distinct mechanisms. Our work highlights the importance of animal behaviour to understand parasite infestation in wild populations.
Tick microbiomes in neotropical forest fragments are best explained by tick-associated and environmental factors rather than host blood source
<p>The composition of tick microbiomes varies both within and among tick species. Whether this variation is intrinsic (related to tick characteristics), or extrinsic (related to vertebrate host and habitat) is poorly understood but important, as microbiota can influence the reproductive success and vector competence of ticks. We aimed to uncover what intrinsic and extrinsic factors best explain the microbial composition and taxon richness of 11 species of Neotropical ticks, collected from eight species of small mammals in 18 forest fragments across central Panama. Microbial richness varied among tick species, life stages, and collection sites, but was not related to host blood source. Microbiome composition was best explained by tick life stage, with bacterial assemblages of larvae being a subset of those of nymphs. Collection site explained most of the bacterial taxa with differential abundance across intrinsic and extrinsic factors. <i>Francisella </i>and <i>Rickettsia </i>were highly prevalent, but their proportional abundance differed greatly among tick species and we found both positive and negative co-occurrence between members of these two genera. Other tick endosymbionts (e.g. <i>Coxiella</i>, <i>Rickettsiella</i>) were associated with specific tick species. In addition, we detected <i>Anaplasma</i> and <i>Bartonella </i>in several tick species. Our results indicate that the microbial composition and richness of Neotropical ticks are principally related to intrinsic factors (tick species, life stage) and collection site. Taken together, our analysis informs how tick microbiomes are structured and can help anchor our understanding of tick microbiomes from tropical environments more broadly.</p>
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
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.