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47 results for “Cheetah”
Triangular mesh of the Brain of a Cheetah (Acinonyx jubatus)
<p>Triangular mesh of the Brain of a Cheetah (<i>Acinonyx jubatus</i>) from http://braincatalogue.org/Cheetah</p>
Data from: Methylation-based markers for the estimation of age in African Cheetah, Acinonyx jubatus
<p>This is a dataset for methylation analyses in cheetah done by EpiTYPER mass array.</p>
Dataset: Cheetah Net Supply Chain Service Inc. (CTNT) Stock Performance
This dataset provides historical stock market performance data for specific companies. It enables users to analyze and understand the past trends and fluctuations in stock prices over time. This information can be utilized for various purposes such as investment analysis, financial research, and market trend forecasting.
Anesthetic management of a case of pheochromocytoma using bioreactance method with Cheetah-NICOM monitor
<p><strong>Pheochromocytoma is a rare neoplasm originating from the chromaffin cells of the adrenal gland. The number of diagnosed and excised adrenal lesions has steadily increased over the last few decades. Contemporarily, improved monitoring systems and therapeutic advances have reduced mortality associated with this disease. During surgery the anesthesiologist must be ready to face sudden hemodynamic, metabolic and electrolyte fluctuations due to the release of catecholamines. In this Case Report, we describe a particularly complex anesthesiologic management of a large secretory lesion by using Cheetah Non-Invasive Cardiac Output Monitor (Cheetah-NICOM monitor), non-invasive hemodynamic monitoring system. A 72-year-old female patient was subjected to adrenalctomy after a diagnosis of an adrenal mass (5 cm) compatible with pheochromocytoma (highlighted by metanephrine dosage). Patient reports recurrent episodes of hypertensive crisis, sweating and precordial pain and was also affected by Type 2 diabetes mellitus. Adrenal surgery for pheochromocytoma results in a significant increase in heart rate and peripheral vascular resistance, which should therefore be monitored to guide the infusion of medicinal products. Although a preoperative preparation with Alpha and beta blockers was carried out, high doses of short-lived beta-blockers and alphalytic and vasodilator were required during the intervention. This case report shows that Cheetah-NICOM monitor allowed us to manage prompty and optimally the catecholaminergic storm and the volemic filling obtaining a rapid postoperative recovery.</strong></p>
Data from: Stability of fecal microbiota during degradation in ex situ Cheetahs in the US
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Fecal microbiota degradation over time in ex situ Namibian Cheetahs (Part 1 of 2)
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Data from: The distribution and numbers of cheetah (Acinonyx jubatus) in southern Africa
Assessing the numbers and distribution of threatened species is a central challenge in conservation, often made difficult because the species of concern are rare and elusive. For some predators, this may be compounded by their being sparsely distributed over large areas. Such is the case with the cheetah Acinonyx jubatus. The IUCN Red List process solicits comments, is democratic, transparent, widely-used, and has recently assessed the species. Here, we present additional methods to that process and provide quantitative approaches that may afford greater detail and a benchmark against which to compare future assessments. The cheetah poses challenges, but also affords unique opportunities. It is photogenic, allowing the compilation of thousands of crowd-sourced data. It is also persecuted for killing livestock, enabling estimation of local population densities from the numbers persecuted. Documented instances of persecution in areas with known human and livestock density mean that these data can provide an estimate of where the species may or may not occur in areas without observational data. Compilations of extensive telemetry data coupled with nearly 20,000 additional observations from 39 sources show that free-ranging cheetahs were present across approximately 789,700 km2 of Namibia, Botswana, South Africa, and Zimbabwe (56%, 22%, 12% and 10% respectively) from 2010 to 2016, with an estimated adult population of 3,577 animals. We identified a further 742,800 km2 of potential cheetah habitat within the study region with low human and livestock densities, where another ∼3,250 cheetahs may occur. Unlike many previous estimates, we make the data available and provide explicit information on exactly where cheetahs occur, or are unlikely to occur. We stress the value of gathering data from public sources though these data were mostly from well-visited protected areas. There is a contiguous, transboundary population of cheetah in southern Africa, known to be the largest in the world. We suggest that this population is more threatened than believed due to the concentration of about 55% of free-ranging individuals in two ecoregions. This area overlaps with commercial farmland with high persecution risk; adult cheetahs were removed at the rate of 0.3 individuals per 100 km2 per year. Our population estimate for confirmed cheetah presence areas is 11% lower than the IUCN's current assessment for the same region, lending additional support to the recent call for the up-listing of this species from vulnerable to endangered status.
Magnetic Resonance Imaging Scan of the Brain of a Cheetah (Acinonyx jubatus)
<p>Magnetic Resonance Imaging Scan of the Brain of a Cheetah (<i>Acinonyx jubatus</i>) from http://braincatalogue.org/Cheetah</p>
SF3D - Lady and cheetah
From the Sketchfab San Francisco Meetup that took place on Aug. 8, 2015. This was shot in Clarion Alley (http://bit.ly/1NjIUEh). Shot in 7 iPhone photos. Source: Objaverse 1.0 / Sketchfab
Hierarchy of fear: experimentally testing ungulate reactions to lion, African wild dog and cheetah
<p>Experiments have begun demonstrating that the fear (antipredator responses) large carnivores inspire in ungulates can shape ecosystem structure and function. Most such experiments have focused on the impacts of either just one large carnivore, or all as a whole, rather than the different impacts different large carnivores may have in intact multi-predator-prey systems. Experimentally testing the relative fearfulness ungulates demonstrate toward different large carnivores is a necessary first step in addressing these likely differing impacts. We tested the fearfulness ungulates demonstrated to audio playbacks of lions (<em>Panthera leo</em>), African wild dogs (<em>Lycaon pictus</em>), cheetahs (<em>Acinonyx jubatus</em>) or non-predator controls (birds), in Greater Kruger National Park, South Africa. Ungulates ran more to lions than wild dogs and more to wild dogs than cheetahs, demonstrating a very clear hierarchy of fear. Those that did not run were vigilant (looked toward the sound) more upon hearing large carnivores than controls, being most vigilant to lions. Notably, predator prey preferences did not predict the patterns observed. Our results demonstrate that different large carnivores inspire different levels of fear in their ungulate prey, pointing to differing community-level impacts, which we discuss in relation to the ongoing worldwide decline and loss of large carnivores.</p>
Genomic analyses show extremely perilous conservation status of African and Asiatic cheetahs (Acinonyx jubatus)
<p><span>We live in a world characterised by biodiversity loss and global environmental change. The extinction of large carnivores can have ramifying effects on ecosystems like an uncontrolled increase in wild herbivores, which in turn can have knock-on impacts on vegetation regeneration and communities. Cheetahs (</span><em><span>Acinonyx jubatus</span></em><span>) serve important ecosystem functions as apex predators; </span><span>yet, they are quickly heading towards an uncertain future. Threatened by habitat loss, human-wildlife conflict, and illegal trafficking, there are only approximately 7,100 individuals remaining in nature. We present the most comprehensive genome-wide analysis of cheetah phylogeography and conservation genomics to date, assembling samples from nearly the entire current and past species' range. We show that their phylogeography is more complex than previously thought, and that East African cheetahs (<em>A. j. raineyi</em>) are genetically distinct from Southern African individuals (<em>A. j. jubatus</em>), warranting their recognition as a distinct subspecies. </span><span>We found strong genetic differentiation between all classically recognised subspecies, thus refuting earlier findings that cheetahs show only little differentiation. The strongest differentiation was </span><span>observed</span><span> between the Asiatic </span><span>and all the African subspecies.</span> <span>We detected high inbreeding in the Critically Endangered Iranian (<em>A. j. venaticus</em>) and North-western (<em>A. j. hecki</em>) subspecies, and show that overall cheetahs, along with snow leopards, have the lowest genome-wide heterozygosity of all the big cats. This further emphasizes the cheetah's perilous conservation status. Our results provide novel and important information on cheetah phylogeography that can support evidence-based conservation policy decisions to help protect this species. This is especially relevant in light of ongoing and proposed translocations across subspecies boundaries, and the increasing threats of illegal trafficking.</span></p>
Human-cheetah conflict subsistence and commercial farmers
<p>This data set (published in biodiversity and conservation) is a subset of data collected between 2012 and 2015 during a nationwide questionnaire based interview survey. For more information about the methodology see Van der Meer E (2016b) The cheetahs of Zimbabwe: distribution and population status 2015. CCPZ, Victoria Falls. <em>DOI</em>: 10.13140/RG.2.2.36719.84648 (also downloadable from cheetahzimbabwe.org)</p>
The potential and shortcomings of mitochondrial DNA analysis for cheetah conservation management
<p>There are only about 7,100 adolescent and adult cheetahs (<em>Acinonyx</em> <em>jubatus</em>) remaining in the wild. With the majority occurring outside protected areas, their numbers are rapidly declining. Evidence-based conservation measures are essential for the survival of this species. Genetic data is routinely used to inform conservation strategies, e.g., by establishing conservation units (CU). A commonly used marker in conservation genetics is mitochondrial DNA (mtDNA). Here, we investigated the cheetah's phylogeography using a large-scale mtDNA data set to refine subspecies distributions and better assign individuals to CUs. Our dataset mostly consisted of historic samples to cover the cheetah's whole range as the species has been extinct in most of its former distribution. While our genetic data largely agree with geography-based subspecies assignments, several geographic regions show conflicting mtDNA signals. Our analyses support previous findings that evolutionary forces such as incomplete lineage sorting or mitochondrial capture likely confound the mitochondrial phylogeography of this species, especially in East and, to some extent, in Northeast Africa. We caution that subspecies assignments solely based on mtDNA should be treated carefully and argue for an additional standardized nuclear single nucleotide polymorphism (SNP) marker set for subspecies identification and monitoring. However, the detection of the <em>A</em>. <em>j</em>. <em>soemmeringii</em> specific haplogroup by a newly designed Amplification-Refractory Mutation System (ARMS) can already provide support for conservation measures.</p>
Time to independence and predator-prey relationships of wild-born, captive-raised cheetahs released into private reserves in Namibia
<p><strong>Data associated with the manuscript:</strong></p> <p>Marker, L., Schmidt-Küntzel, A., Walker, E. H., Nghikembua, M., Cristescu, B. Time to independence and predator-prey relationships of wild-born, captive-raised cheetahs released into private reserves in Namibia. Ecological Solutions and Evidence.</p> <p><strong>Contact:</strong></p> <p>Dr. Bogdan Cristescu</p> <p>bogdan@cheetah.org</p> <p><strong>Description:</strong></p> <p>This manuscript estimated the time to independence and cheetah-prey relationships for cheetahs released onto three private reserves in Namibia. The cheetahs were rescued as wild-born cubs, were raised in captivity and went through a rehabilitation process at the Cheetah Conservation Fund, Namibia, and then released with collars to monitor their success post-release in the wild.</p> <p>The data is a MS Excel file that includes separate spreadsheets for:</p> <p>- Time to independence ("TimeToIndependence"): number of weekly supplemental feedings of cheetahs post-release before achieving independence</p> <p>- Prey composition ("PreyComposition"): the species, sex, age class, and size class of prey that cheetahs killed and were recorded during monitoring post-release </p> <p>- Prey availability ("PreyAvailability"): the prey species recorded along driven dirt road transects, and which were used to estimate prey density in a distance sampling framework </p> <p>- Habitat use ("HabitatUse"): the number of kills made by released cheetahs that have associated habitat class information, partitioned by chetah reproductive status (SF: solitary female, CF: coalition females, CM: coalition males) </p>
A chromosome-scale high-contiguity genome assembly of the threatened cheetah (Acinonyx jubatus)
<p><span>The cheetah (<em>Acinonyx</em> <em>jubatus</em>, SCHREBER 1775) is a large felid and is considered the fastest land animal. Historically, it inhabited open grassland across Africa, the Arabian Peninsula, and southwestern Asia; however, only small and fragmented populations remain today. Here, we present a de novo genome assembly of the cheetah based on PacBio continuous long reads and Hi-C proximity ligation data. The final assembly (VMU_Ajub_asm_v1.0) has a total length of 2.38 Gb, of which 99.7% are anchored into the expected 19 chromosome-scale scaffolds. The contig and scaffold N50 values of 96.8 Mb and 144.4 Mb, respectively, a BUSCO completeness of 95.4% and a k-mer completeness of 98.4%, emphasize the high quality of the assembly. Furthermore, annotation of the assembly identified 23,622 genes and a repeat content of 40.4%. This new highly contiguous and chromosome-scale assembly will greatly benefit conservation and evolutionary genomic analyses and will be a valuable resource, e.g., to gain a detailed understanding of the function and diversity of immune response genes in felids.</span></p>
Comparison Between NICOM-Cheetah and Flotrac-Vigileo for Cardiac Output Monitoring.
ClinicalTrials.gov study NCT03394768. IPD Sharing: NO. Countries: 1. Publications: 4.
Data from: The distribution and numbers of cheetah (Acinonyx jubatus) in southern Africa
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The potential and shortcomings of mitochondrial DNA analysis for cheetah conservation management
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Genomic analyses show extremely perilous conservation status of African and Asiatic cheetahs (Acinonyx jubatus)
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Hierarchy of fear: experimentally testing ungulate reactions to lion, African wild dog and cheetah
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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.