Relevant bibliographies by topics / Cheetah

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Academic literature on the topic 'Cheetah'

Author: Grafiati
Published: 4 June 2021
Last updated: 29 July 2024

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Journal articles on the topic "Cheetah"

1

Mangiaterra, Sara, Laurie Marker, Matteo Cerquetella, Livio Galosi, Andrea Marchegiani, Alessandra Gavazza, and Giacomo Rossi. "Chronic Stress-Related Gastroenteric Pathology in Cheetah: Relation between Intrinsic and Extrinsic Factors." Biology 11, no. 4 (April 15, 2022): 606. http://dx.doi.org/10.3390/biology11040606.

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The rapid decline of cheetah (Acinonyx jubatus) throughout their range and long-term studies of captive breeding has increased conservation action for this species including the study of chronic diseases. Gastritis is one of the captive diseases that leads to high mortality presented with symptoms including vomiting, diarrhea, anorexia, and weight loss. The disease presents different histological lesions in the gastrointestinal tract that are characterized by inconstant and different clinical appearance in captive and free-range cheetahs. The aim of this review is to summarize the causes of chronic gastritis in the cheetah. Factors including diet, living conditions, infections with gastric Helicobacter-like organisms (GHLOs), the lack of genetic polymorphism and the cheetah’s specific-immunocompetence are analyzed. All studies on gastroenteric cheetah pathologies, conducted between 1991 (to the best of our knowledge, the first report on online databases) and 2021, are included in this review, highlighting the possible correlation between stress-related captive conditions and chronic gastric pathology.
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MOLIA, S., R. W. KASTEN, M. J. STUCKEY, H. J. BOULOUIS, J. ALLEN, G. M. BORGO, J. E. KOEHLER, C. C. CHANG, and B. B. CHOMEL. "Isolation ofBartonella henselae, Bartonella koehleraesubsp.koehlerae, Bartonella koehleraesubsp.bothieriand a new subspecies ofB. koehleraefrom free-ranging lions (Panthera leo) from South Africa, cheetahs (Acinonyx jubatus) from Namibia and captive cheetahs from California." Epidemiology and Infection 144, no. 15 (July 25, 2016): 3237–43. http://dx.doi.org/10.1017/s0950268816001394.

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SUMMARYBartonellae are blood- and vector-borne Gram-negative bacteria, recognized as emerging pathogens. Whole-blood samples were collected from 58 free-ranging lions (Panthera leo) in South Africa and 17 cheetahs (Acinonyx jubatus) from Namibia. Blood samples were also collected from 11 cheetahs (more than once for some of them) at the San Diego Wildlife Safari Park. Bacteria were isolated from the blood of three (5%) lions, one (6%) Namibian cheetah and eight (73%) cheetahs from California. The lionBartonellaisolates were identified asB. henselae(two isolates) andB. koehleraesubsp.koehlerae. The Namibian cheetah strain was close but distinct from isolates from North American wild felids and clustered betweenB. henselaeandB. koehlerae. It should be considered as a new subspecies ofB. koehlerae. All the Californian semi-captive cheetah isolates were different fromB. henselaeorB. koehleraesubsp.koehleraeand from the Namibian cheetah isolate. They were also distinct from the strains isolated from Californian mountain lions (Felis concolor) and clustered with strains ofB. koehleraesubsp.bothieriisolated from free-ranging bobcats (Lynx rufus) in California. Therefore, it is likely that these captive cheetahs became infected by an indigenous strain for which bobcats are the natural reservoir.
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Sillero-Zubiri, Claudio, Susana Rostro-García, Dylan Burruss, Alkabouss Matchano, Abdoulaye Harouna, and Thomas Rabeil. "Saharan cheetah Acinonyx jubatus hecki, a ghostly dweller on Niger's Termit massif." Oryx 49, no. 4 (June 10, 2015): 591–94. http://dx.doi.org/10.1017/s0030605315000290.

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AbstractThe Saharan cheetah Acinonyx jubatus hecki, once broadly distributed across north-western Africa, now occurs in only 9% of its former range and is categorized as Critically Endangered on the IUCN Red List. The Saharan cheetah is rare and threatened but there is a lack of reliable data on its population status and distribution. We report sightings of cheetahs in the Termit & Tin Toumma National Nature and Cultural Reserve of Niger, recorded using three methods: camera-trap surveys, sign surveys and interviews with local people. We recorded three individuals in camera-traps, three direct sightings of lone individuals, 43 distinct cheetah tracks, and one cheetah scat, which suggest a resident population. Most respondents had negative attitudes towards carnivores, including the cheetah. Paradoxically, local nomads reported no conflict with the cheetah and perceived that the number of cheetahs was declining. Attitudes towards carnivores were correlated with respondents’ age and level of education. Efforts to reduce killing of carnivores and their prey are needed but it is equally important for conservation initiatives to focus on increasing local knowledge about wildlife through education, particularly targeted at the younger generation. Our findings highlight the benefits of using various techniques for recording the presence of a rare carnivore.
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Marino, Morgan E., Melanie A. Mironovich, Nikole E. Ineck, Scott B. Citino, Jessica A. Emerson, David J. Maggs, Lyndon M. Coghill, et al. "Full Viral Genome Sequencing and Phylogenomic Analysis of Feline Herpesvirus Type 1 (FHV-1) in Cheetahs (Acinonyx jubatus)." Viruses 13, no. 11 (November 19, 2021): 2307. http://dx.doi.org/10.3390/v13112307.

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Feline herpesvirus type 1 (FHV-1) is endemic in captive cheetahs and sporadically causes devastating disease. Modified live vaccines (MLV), intended for use in domestic cats, are used in some captive cheetah populations and have been anecdotally linked to disease in certain subpopulations. Ten FHV-1 isolates from ten captive cheetahs and one isolate from an MLV used to inoculate four of the host animals were analyzed. Viral DNA was extracted for full-genome sequencing by Illumina MiSeq with viral genomes then used for phylogenomic and recombinational analyses. The FHV-1 shed by vaccinated cheetahs were almost identical to the MLV, with few variants among viral genomes. Eight cheetah FHV-1 isolates and the MLV were grouped in a clade along with FHV-1 isolates from domestic cats in the USA. The remaining two cheetah FHV-1 isolates (unknown host vaccine status) were not associated with a clade. The likely ancestral origin of these two isolates involves recombination events between Australian domestic cat and cheetah FHV-1 isolates. Collectively, these data suggest that the MLV is capable of causing clinical disease and viral shedding in some cheetahs and represents evidence of interspecies transmission of virus between domestic and wild cats.
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Koester, Diana C., Elizabeth W. Freeman, David E. Wildt, Kimberly A. Terrell, Ashley D. Franklin, Karen Meeks, and Adrienne E. Crosier. "Group management influences reproductive function of the male cheetah (Acinonyx jubatus)." Reproduction, Fertility and Development 29, no. 3 (2017): 496. http://dx.doi.org/10.1071/rd15138.

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Although the free-ranging cheetah is generally socially solitary, as many as 60% of males live in same-sex (usually sibling) coalitions. Under ex situ conditions, the cheetah experiences low reproductive success with only ~18% of males having ever produced young. Most male cheetahs (85%) are managed in captivity in coalitions, but with no data on the influence of social grouping on reproductive parameters. We examined the influence of singleton versus coalition management on various male cheetah physiological traits, including ejaculate quality and gonadal and adrenal hormone metabolite concentrations. We also assessed behaviour within coalitions for evidence of social hierarchy through initiation of interactions with group mates and relatedness to physiological traits. Ejaculate quality (including total motile and structurally normal spermatozoa per ejaculate) and androgen concentration profiles were higher (P < 0.05) in coalition compared with singleton males. These results support the conclusion that testis function in the cheetah, specifically related to the development of normal, motile spermatozoa and androgen production, is influenced by management with same-sex conspecifics. The findings have implications for ex situ conservation breeding programs by suggesting that reproductive quality can be enhanced through group maintenance of cheetah males.
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Giese, Lisa, Jörg Melzheimer, Dirk Bockmühl, Bernd Wasiolka, Wanja Rast, Anne Berger, and Bettina Wachter. "Using Machine Learning for Remote Behaviour Classification—Verifying Acceleration Data to Infer Feeding Events in Free-Ranging Cheetahs." Sensors 21, no. 16 (August 11, 2021): 5426. http://dx.doi.org/10.3390/s21165426.

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Behavioural studies of elusive wildlife species are challenging but important when they are threatened and involved in human-wildlife conflicts. Accelerometers (ACCs) and supervised machine learning algorithms (MLAs) are valuable tools to remotely determine behaviours. Here we used five captive cheetahs in Namibia to test the applicability of ACC data in identifying six behaviours by using six MLAs on data we ground-truthed by direct observations. We included two ensemble learning approaches and a probability threshold to improve prediction accuracy. We used the model to then identify the behaviours in four free-ranging cheetah males. Feeding behaviours identified by the model and matched with corresponding GPS clusters were verified with previously identified kill sites in the field. The MLAs and the two ensemble learning approaches in the captive cheetahs achieved precision (recall) ranging from 80.1% to 100.0% (87.3% to 99.2%) for resting, walking and trotting/running behaviour, from 74.4% to 81.6% (54.8% and 82.4%) for feeding behaviour and from 0.0% to 97.1% (0.0% and 56.2%) for drinking and grooming behaviour. The model application to the ACC data of the free-ranging cheetahs successfully identified all nine kill sites and 17 of the 18 feeding events of the two brother groups. We demonstrated that our behavioural model reliably detects feeding events of free-ranging cheetahs. This has useful applications for the determination of cheetah kill sites and helping to mitigate human-cheetah conflicts.
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Weise, Florian J., Joseph R. Lemeris, Stuart J. Munro, Andrew Bowden, Cicelia Venter, Marlice van Vuuren, and Rudie J. van Vuuren. "Cheetahs (Acinonyx jubatus) running the gauntlet: an evaluation of translocations into free-range environments in Namibia." PeerJ 3 (October 22, 2015): e1346. http://dx.doi.org/10.7717/peerj.1346.

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Following dramatic range and population declines, the cheetah is Africa’s most endangered large felid. In Namibia, private land managers still trap cheetahs but increasingly consider moving animals instead of killing them. Across Africa, managers have translocated perceived conflict carnivores for decades, but rarely evaluated their actions. We analyse the outcomes of 15 cheetah translocations (for 23 adults and 10 dependent offspring) into free-range environments in Namibia. We released cheetahs at an average distance of 419.6 km ± 216.1 km SD (range: 71–816 km) after captive periods ranging from 1–1,184 days (350.6 days ± 439.0 days SD). An individual’s ability to survive the first year predominantly determined the overall translocation success of 40%. Post-release conflict and homing had less impact on success. Cheetah survival was lowest in the first three months after release. Human persecution (50% of deaths) and spotted hyaenas (29% of deaths) had the highest effect on survival. The degree of habituation to humans acquired during captivity significantly influenced chances of survival. Cheetahs surviving the initial post-release period (∼90 days) often settled into ranges and females reproduced successfully. However, all individuals exhibited extensive movements, frequently roaming >4,000 km2in the first six months after release (with a maximum of 19,743 km2in 112 days), resulting in low release site fidelity. Soft release and larger recipient area size did not improve site fidelity. Based on these outcomes, we evaluated which unfenced conservation areas in Namibia could potentially receive cheetahs. We found that there are currently few public and/or private reserves large enough to contain the movement profiles we observed in this study. This suggests that most translocations will result in cheetahs re-entering farmlands where they face a high risk of persecution. In conclusion, translocations into unconfined areas can successfully conserve individual cheetahs. Due to high mortality and unpredictable outcomes, however, conservation efforts need to focus on improving tolerance of cheetahs in commercial livestock and game farming areas in order to reduce the number of indiscriminately trapped animals.
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Melzheimer, Joerg, Sonja K. Heinrich, Bernd Wasiolka, Rebekka Mueller, Susanne Thalwitzer, Ivan Palmegiani, Annika Weigold, et al. "Communication hubs of an asocial cat are the source of a human–carnivore conflict and key to its solution." Proceedings of the National Academy of Sciences 117, no. 52 (December 7, 2020): 33325–33. http://dx.doi.org/10.1073/pnas.2002487117.

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Human–wildlife conflicts occur worldwide. Although many nonlethal mitigation solutions are available, they rarely use the behavioral ecology of the conflict species to derive effective and long-lasting solutions. Here, we use a long-term study with 106 GPS-collared free-ranging cheetahs (Acinonyx jubatus) to demonstrate how new insights into the socio-spatial organization of this species provide the key for such a solution. GPS-collared territory holders marked and defended communication hubs (CHs) in the core area of their territories. The CHs/territories were distributed in a regular pattern across the landscape such that they were not contiguous with each other but separated by a surrounding matrix. They were kept in this way by successive territory holders, thus maintaining this overdispersed distribution. The CHs were also visited by nonterritorial cheetah males and females for information exchange, thus forming hotspots of cheetah activity and presence. We hypothesized that the CHs pose an increased predation risk to young calves for cattle farmers in Namibia. In an experimental approach, farmers shifted cattle herds away from the CHs during the calving season. This drastically reduced their calf losses by cheetahs because cheetahs did not follow the herds but instead preyed on naturally occurring local wildlife prey in the CHs. This implies that in the cheetah system, there are “problem areas,” the CHs, rather than “problem individuals.” The incorporation of the behavioral ecology of conflict species opens promising areas to search for solutions in other conflict species with nonhomogenous space use.
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Kherwar, Pramod Kumar, Binilraj Adhikari, and Devendra Adhikari. "Biomechanics of Cheetah with Applications in Robotics and Athletics." Journal of Multidisciplinary Science: MIKAILALSYS 2, no. 1 (December 28, 2023): 13–24. http://dx.doi.org/10.58578/mikailalsys.v2i1.2390.

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The primary emphasis of this article is on cheetahs as fast-moving terrestrial animals whose biomechanics are investigated. An investigation into the biomechanics of this animal provides light on its specialized adaptations that enable to attain extraordinary velocities, thereby shedding light on its evolutionary past and interspecies interactions. Cheetahs have undergone significant physiological, anatomical, and behavioral modifications to accommodate its exceptional speed. The research thoroughly examines the adaptations of the cheetah, encompassing its musculature, talons, and limb structure. Additionally, the respiratory and cardiovascular adaptations that cheetahs possess to facilitate sprinting are discussed in the article. This article also discusses how robot designers and athletes can utilize the strategies used by cheetahs to achieve extremely high speeds through adaptation.
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Weise, Florian J., Varsha Vijay, Andrew P. Jacobson, Rebecca F. Schoonover, Rosemary J. Groom, Jane Horgan, Derek Keeping, et al. "The distribution and numbers of cheetah(Acinonyx jubatus)in southern Africa." PeerJ 5 (December 11, 2017): e4096. http://dx.doi.org/10.7717/peerj.4096.

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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 cheetahAcinonyx 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 km2of 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 km2of 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 km2per 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.
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Dissertations / Theses on the topic "Cheetah"

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Tingstrom, Daniel. "Cheetah: An Economical Distributed RAM Drive." ScholarWorks@UNO, 2006. http://scholarworks.uno.edu/td/323.

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Current hard drive technology shows a widening gap between the ability to store vast amounts of data and the ability to process. To overcome the problems of this secular trend, we explore the use of available distributed RAM resources to effectively replace a mechanical hard drive. The essential approach is a distributed Linux block device that spreads its blocks throughout spare RAM on a cluster and transfers blocks using network capacity. The presented solution is LAN-scalable, easy to deploy, and faster than a commodity hard drive. The specific driving problem is I/O intensive applications, particularly digital forensics. The prototype implementation is a Linux 2.4 kernel module, and connects to Unix based clients. It features an adaptive prefetching scheme that seizes future data blocks for each read request. We present experimental results based on generic benchmarks as well as digital forensic applications that demonstrate significant performance gains over commodity hard drives.
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Thalwitzer, Susanne [Verfasser]. "Reproductive activity in cheetah females, cub survival and health of male and female cheetahs on Namibian farmland / Susanne Thalwitzer." Berlin : Freie Universität Berlin, 2008. http://d-nb.info/1022653628/34.

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Café, Marçal Valéria. "Pathology and immunohistochemistry of Cheetah (Acinonyx jubatus) myelopathy /." [S.l.] : [s.n.], 2006. http://www.stub.ch/index.php?p=1&i=645.

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Sasidharan-Priyadersini, Sooryakanth. "Genetic admixture, inbreeding and heritability estimates in captive African cheetahs (Acinonyx jubatus) including linkage analysis for the King cheetah phenotype." Thesis, University of Pretoria, 2011. http://hdl.handle.net/2263/25030.

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This multifaceted study primarily aimed at understanding the genetic make-up of captive versus wild cheetah (Acinonyx jubatus) populations in South Africa, with a specific emphasis on a valuable gene pool of a recessive phenotype that is increasingly being maintained in captive population country-wide. The current literature on cheetah genetics has very little information on diversity levels of wild South African cheetahs, and no information on founder dynamics and genetic make-up of South African captive populations. Decisions on cheetah relocations are being made, implementing current conservation policy, from assumptions on origin and relatedness. This research compared population genetic parameters within the largest South African captive cheetah population to free-ranging Namibian and South African conspecifics. The study addressed concerns regarding excessive Namibian genetic introgression into the native captive population and established the extent of genetic variability and Namibian ancestry within the captive population. The study has attempted to address the rising concern among conservation officials with respect to illegal trade of wild-captured cheetahs, wild caught cheetahs that are sold as captive-bred after implanting a microchip. In addition to establishing routine parentage verification using genetic markers that are polymorphic in this species, this study established a technique powerful enough to estimate ancestry in cheetahs of unknown antecedents. The potential of spatial Bayesian clustering to differentiate the point of origin of unknown cheetahs was exploited and in addition, a database for future forensic efforts to address the problem of illegal trade was established. The captive population that was part of this dataset proved to be quite admixed, excepting for the King lineage which was distinct. The second aspect of this study investigated complex conditions such as development of gastritis, renal conditions and/or susceptibility to infections and its relation to pedigree and marker based inbreeding levels. Heritability values for important breeding traits were estimated from pedigree records of 532 cheetahs and are reported for the first time. Gastritis was weakly correlated to the expression of the King trait. Finally, a smaller cohort of the captive pedigree that segregates for a recessive colour variant called the King phenotype was tested for the assumption that the variation is a mutation of the tabby locus described in domestic cats. Genetic linkage analysis was done by testing microsatellite markers detected linked to Tabby for linkage to a conserved region in the cheetah that potentially codes for the King coat colour. Genetic linkage analysis was not detected between the King locus and the domestic cat microsatellite markers used for this study, with LOD scores remaining non-significant for all the markers.
Thesis (PhD)--University of Pretoria, 2011.
Production Animal Studies
unrestricted
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Melzheimer, Jörg [Verfasser]. "Spatial ecology of free-ranging cheetah (Acinonyx jubatus) and its applications to mitigate the farmer-cheetah conflict in Namibia / Jörg Melzheimer." Berlin : Freie Universität Berlin, 2021. http://d-nb.info/1224474953/34.

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Laver, Peter Norman. "Cheetah of the Serengeti Plains: A home range analysis." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/45981.

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Cheetah (Acinonyx jubatus) persist under continued conservation threat in small populations mostly in protected areas in an historically reduced geographic range. Home range, a useful trait for threat assessment, species reintroduction, and population estimation, is plastic in cheetah with sizes ranging from 40 km2 to over 1000 km2 depending on location. Previous home range estimates for cheetah used the minimum convex polygon (MCP), assuming asymptotic home ranges and MCP insensitivity to sample size. They reported metrics of home range size and overlap based on only outline methods. I use 6 481 observations of 240 female and 315 male cheetah from > 60 matrilines over 25 years in the Serengeti Plains to investigate lifetime, core, yearly, and seasonal range size with kernel density estimation. I investigate autocorrelation using time to statistical independence of locations. I confront the assumption of asymptotic home ranges by testing the traditional and multiscaled home range predictions and provide a novel method for determining kernel asymptotes. I challenge the notion of Serengeti cheetah as a migratory carnivore with analyses of site fidelity and objectively defined core ranges. I assess year to year and seasonal location shifts, showing that yearly shifting lessens as females age. I provide quantitative evidence for philopatry in female- and juvenile dispersal in male cheetah of the Serengeti Plains. I use simple overlap metrics to show that overlap in lifetime and core ranges is greater in related than unrelated female pairs. I use multi-response permutation procedures (MRPP) to show that overlap in unrelated female pairs varies with season. I use correlation of utilization distributions to show that avoidance is apparent only in unrelated pairs of females. My results call into question previous MCP estimates of cheetah home range size, and provide guidance for future sampling of cheetah locations. My home range results will guide management of this imperiled species and my methodological findings may be general and applicable to a wide range of taxa.
Master of Science
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Patel, Amir. "Understanding the motions of the cheetah tail using robotics." Doctoral thesis, University of Cape Town, 2015. http://hdl.handle.net/11427/15677.

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The cheetah is capable of incredible feats of manoeuvrability. But, what is interesting about these manoeuvres is that they involve rapid swinging of the animal's lengthy tail. Despite this, very little is understood about the cheetah tail and its motion, with the common view being that it is "heavy" and possibly used as a "counter balance" or as a "rudder". In this dissertation, this subject is investigated by exploring the motions of the cheetah tail by means of mathematic al models, feedback control and novel robot platforms. Particularly, the motion in the roll axis is first investigated and it is determined that it assists stability of high speed turns. This is validated by modelling and experimental testing on a novel tailed robot, Dima I. Inspired by cheetah video observations, the tail motion in the pitch axis during rapid acceleration and braking manoeuvres is also investigated. Once again modelling and experimental testing on a tailed robot are performed and the tail is shown to stabilise rapid acceleration manoeuvres. Video observations also indicate the tail movement in the shape of a cone: a combination of pitching and yawing. Understanding this motion is done by setting up an optimization problem. Here, the optimal motion was found to be to a cone which results in a continuous torque on the body during a turn while galloping. A novel two degree of freedom tailed robot, Dima II, was then developed to experimentally validate the effect of this motion. Lastly, measurement of the cheetah tail inertia was performed during a routine necropsy where it was found to have lower inertia than assumed. However, the tail has thick, long fur that was tested in a wind tunnel. Here it was found that the furry tail is capable of producing significant drag forces without a weight penalty. Subsequently, mathematical models incorporating the aerodynamics of the tail were developed and these were used to demonstrate its effectiveness during manoeuvres.
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Clements, Hayley Susan. "Incorporating prey demographics and predator social structure into prey selection and carrying capacity estimates for cheetah." Thesis, Nelson Mandela Metropolitan University, 2012. http://hdl.handle.net/10948/d1018606.

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There is a need for a refined understanding of large carnivore prey preference and carrying capacity (K). To date, K estimates for large carnivores have been developed from predictions of carnivore diet at a prey and predator species-level. These predictions therefore assume that all social classes within a carnivore species display similar prey preferences and that all demographic classes within a prey species are equally preferred or avoided. The objective of this study was to investigate the importance of including prey demographics and carnivore social class in carnivore diet descriptions and thereby K estimates, using cheetah Acinonyx jubatus as a study species. It was predicted that prey sex, prey age and cheetah social class influence cheetah prey preferences, when they influence the risk and ease of prey capture, and that their inclusion in a K model would improve its predictive strength. Based on an analysis of 1290 kills from South Africa, male coalition cheetah were found to prefer a broader weight range of prey than solitary cheetah. Prey demographics further influenced cheetah prey preference, when it corresponded to differences in prey size and the presence of horns. The current species-level K regression model for cheetah is based on preferred prey and thus omits highly abundant antelope that often comprise the majority of the diet, an artefact of the way in which preferences are calculated. A refinement of the species-level K regression model, to account for prey demographic- and cheetah social class-level differences in diet and the biomass of accessible prey (defined in this study as all non-avoided prey) instead of just preferred prey, doubled the predictive strength of the K model. Because group-hunting enabled predation on a broader weight range of prey, cheetah K was influenced by the ratio of male coalition cheetah to solitary cheetah in the population. The refined K regression model is derived from ecosystems supporting an intact carnivore guild. A mechanistic approach to estimating K, based on Caughley‟s (1977) maximum sustainable yield model, therefore better predicted cheetah K in systems devoid of lion Panthera leo and African wild dog Lycaon pictus, which were found to suppress cheetah density. This study improves our understanding of the relationships between prey demographics, cheetah social classes and intra-guild competition in determining cheetah prey preferences and K. This study therefore paves the way for similar work on other large carnivores.
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Marker, Laure. "Aspects of cheetah (Acinonyx jubatus) biology, ecology and conservation strategies on Namibian farmlands." Thesis, University of Oxford, 2002. http://ora.ox.ac.uk/objects/uuid:ae3a6eed-5470-4664-9c05-ecfddabbebec.

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In an increasingly human-dominated environment, the task of successfully conserving large carnivores, such as cheetahs, is difficult due to real or perceived threats resulting in conflict and often their local extirpation. This research describes the causes and potential solutions to this conflict in Namibia. Cheetah biology and ecology were studied through physical examination, laboratory analysis, radio-tracking and human perceptions using survey techniques. Between 1991 and 2000 data collected on over 400 live-captured and dead cheetahs showed that a perceived threat to livestock or game was the reason for 91.2% (n = 343) of cheetahs captured and 47.6% (n = 30) of wild cheetah deaths. Both were biased towards males, with 2.9 males being captured for every female, despite an apparent equality of sex ratio. Human-mediated mortality accounted for 79.4% (n = 50) of wild deaths reported, of which the majority involved prime adult animals, with a peak at around 5-6 years of age. Polymorphic microsatellite loci were used to assess 313 Namibian cheetahs' variation, gene flow, paternity and behavioural ecology. Genetic analysis showed limited regional differentiation supporting a panmictic population and that persistence in Namibia depends on dispersal from regions throughout the country; therefore efforts of connectivity throughout the country should continue. Relatedness values confirmed family groups, and 45 new potential sire/dam offspring and 7 sibling groups were identified, providing information on dispersal and the success of translocation. Sera from wild cheetah were assessed for exposure to feline and canine virus antibodies to CDV, FCoV/FTP, FHV1, FPV, and FCV; antibodies were detected in 24%, 29%, 12%, 48%, and 65%, respectively, showing infection occurs in wild cheetahs; although there was no evidence of disease at time of capture, these diseases are known to cause serious clinical disease in captive cheetahs. Neither FIV antibodies nor FeLV antigens were present in any wild cheetahs tested, however, the first case of FeLV in a non-domestic felid is described in a captive Namibian cheetah. Concern for contact with domestic animals is discussed. Focal Palatine Erosion (FPE), a dental abnormality found in captive cheetahs, was discovered in over 70% of the wild cheetahs and was correlated with dental malocclusions, and is of concern to the long-term health of wild cheetahs. Namibian cheetahs have a mean 95% kernel home range of 1642.3 km2 (+/- 1565.1 km2), the largest home ranges yet defined. Habitat type significantly affected the cheetah's spatial distribution and prey density. Radio-collared female cheetahs were more closely related to other cheetahs in the study area than males, indicating male dispersal. Continual cheetah perturbation may partially explain the unusually low density of cheetahs in this area (estimated at only 2.5 cheetahs per 1000km2) despite the apparent abundance of prey. Namibian farmers originally surveyed revealed a mean removal of 19 cheetahs per year/farm, even when not considered a problem, and higher removals occurred on game farms. Evidence for actual livestock depredation was negligible, only 3% of reported captures. Scat analysis revealed cheetahs' selection for indigenous game, however 5% of scats contained evidence of livestock. Research conducted on methods of conflict resolution showed that placing Anatolian Shepherd livestock guarding dogs proved to be effective, with 76% of farmers reporting a large decline in livestock losses since acquiring an Anatolian. Such solutions appear effective in increasing farmer's tolerance for cheetahs, and by the end of the study period cheetah removals dropped to a mean of 2.1 cheetahs/farm/year. Implementing strategies such as these could be significant for reducing human-carnivore conflict in the many other places in which it occurs.
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Marnewick, K., PJ Funston, and KU Karanth. "Evaluating camera trapping as a method for estimating cheetah abundance in ranching areas." Southern African Wildlife Management Association, 2007. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1000683.

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n order to accurately assess the status of the cheetah Acinonyx jubatus it is necessary to obtain data on numbers and demographic trends. However, cheetahs are notoriously difficult to survey because they occur at very low population densities and are often shy and elusive. In South Africa the problem is further complicated in areas where land is privately owned, restricting access, with dense bush and cheetahs that are frequently persecuted. Cheetahs are individually identifiable by their unique spot patterns, making them ideal candidates for capture–recapture surveys. Photographs of cheetahs were obtained using four camera traps placed successively at a total of 12 trap locations in areas of known cheetah activity within a 300 km² area in the Thabazimbi district of the Limpopo Province. During 10 trapping periods, five different cheetahs were photographed. These results were used to generate capture histories for each cheetah and the data were analysed using the capture–recapture software package CAPTURE. Closure tests indicated that the population was closed (P = 0.056). The Mh model was used to deal with possible heterogeneous capture probabilities among individual cheetahs. Closure tests did not reject the model assumption of population closure (P = 0.056).TheMh model produced a capture probability of 0.17 with an estimate of 6–14 cheetahs (P = 0.95) and a mean population size of seven cheetahs (S.E. = 1.93). These results are promising and will be improved with employment of more camera traps and sampling a larger area.
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Books on the topic "Cheetah"

1

Dave, Hamman, ed. Cheetah. Cape Town: Struik, 2003.

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Gordon, Katharine. Cheetah. Leicester: Charnwood, 1987.

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Karl, Ammann, ed. Cheetah. New York: Arco Pub., 1985.

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Karl, Ammann, ed. Cheetah. London: Bodley Head, 1985.

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Arnold, Caroline. Cheetah. New York: Morrow Junior Books, 1989.

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MacLeod, Elizabeth. Koalas. New York: Scholastic, 1989.

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Hilker, Cathryn Hosea. A cheetah named Angel. New York: F. Watts, 1992.

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ill, Washburn Lucia, ed. Cheetah cubs. New York: Grosset & Dunlap, 2007.

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Stone, Lynn M. The cheetah. Vero Beach, Fla: Rourke Enterprises, 1989.

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Ammann, Karl, and Katherine Ammann. Cheetah. Arco Pub, 1985.

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Book chapters on the topic "Cheetah"

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Bothma, J. du P., and Clive Walker. "The cheetah." In Larger Carnivores of the African Savannas, 92–115. Berlin, Heidelberg: Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/978-3-662-03766-9_4.

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Buzdalov, Maxim, Sergey Kolyubin, Artem Egorov, and Ivan Borisov. "Optimizing Robotic Cheetah Leg Parameters Using Evolutionary Algorithms." In Lecture Notes in Computer Science, 214–27. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-63710-1_17.

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Wu, Shuang, Dengguo Feng, and Wenling Wu. "Practical Rebound Attack on 12-Round Cheetah-256." In Information, Security and Cryptology – ICISC 2009, 300–314. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-14423-3_20.

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Goudhaman, M., S. Sasikumar, and N. Vanathi. "Fuzzy C-Means and Fuzzy Cheetah Chase Optimization Algorithm." In Proceedings of International Conference on Data Science and Applications, 431–39. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-6631-6_30.

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Yan, Tian, Linpeng Huang, and Shengan Zheng. "Cheetah: An Adaptive User-Space Cache for Non-volatile Main Memory File Systems." In Web and Big Data, 199–207. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-85896-4_17.

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Van der Weyde, L. K., J. Horgan, N. Ramsden, D. Thamage, and R. Klein. "Conservation Challenges, Resource Management and Opportunities to Sustain Wildlife Biodiversity in the Kalahari: Insights from a Local NGO, Cheetah Conservation Botswana." In Sustainability in Developing Countries, 243–63. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-48351-7_12.

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"Cheetah." In Animals of the Masai Mara, 34–37. Princeton University Press, 2013. http://dx.doi.org/10.1515/9781400844913.34.

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"Cheetah." In Animals of Kruger National Park, 48–51. Princeton University Press, 2016. http://dx.doi.org/10.2307/j.ctt19b9jmw.20.

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"25. Cheetah." In ʿĪsā ibn ʿAlī's Book on the Useful Properties of Animal Parts, 240–43. Berlin, Boston: De Gruyter, 2018. http://dx.doi.org/10.1515/9783110550368-031.

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"cheetah, n." In Oxford English Dictionary. 3rd ed. Oxford University Press, 2023. http://dx.doi.org/10.1093/oed/1104318545.

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Conference papers on the topic "Cheetah"

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Lahlou, Laaziz, Nadjia Kara, Mohssine Arouch, and Claes Edstrom. "Cheetah." In Middleware '20: 21st International Middleware Conference. New York, NY, USA: ACM, 2020. http://dx.doi.org/10.1145/3429885.3429964.

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Tirmazi, Muhammad, Ran Ben Basat, Jiaqi Gao, and Minlan Yu. "Cheetah." In the ACM SIGCOMM 2019 Conference Posters and Demos. New York, New York, USA: ACM Press, 2019. http://dx.doi.org/10.1145/3342280.3342311.

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Klein, Karsten, Sabrina Jaeger, Jörg Melzheimer, Bettina Wachter, Heribert Hofer, Artur Baltabayev, and Falk Schreiber. "Visual Analytics for Cheetah Behaviour Analysis." In VINCI'2019: The 12th International Symposium on Visual Information Communication and Interaction. New York, NY, USA: ACM, 2019. http://dx.doi.org/10.1145/3356422.3356435.

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Tirmazi, Muhammad, Ran Ben Basat, Jiaqi Gao, and Minlan Yu. "Cheetah: Accelerating Database Queries with Switch Pruning." In SIGMOD/PODS '20: International Conference on Management of Data. New York, NY, USA: ACM, 2020. http://dx.doi.org/10.1145/3318464.3389698.

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Jiang, Lei, Bo Su, Peng Xu, Qindan Deng, Lindong Mu, and Yunfeng Jiang. "Research on Cheetah Bionic Quadruped Robot Technology." In 2020 3rd International Conference on Unmanned Systems (ICUS). IEEE, 2020. http://dx.doi.org/10.1109/icus50048.2020.9275000.

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Xu, Ziwei. "3D Creative Design of Cheetah Running Form." In 2021 International conference on Smart Technologies and Systems for Internet of Things (STS-IOT 2021). Paris, France: Atlantis Press, 2022. http://dx.doi.org/10.2991/ahis.k.220601.015.

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Liu, Tongping, and Xu Liu. "Cheetah: detecting false sharing efficiently and effectively." In CGO '16: 14th Annual IEEE/ACM International Symposium on Code Generation and Optimization. New York, NY, USA: ACM, 2016. http://dx.doi.org/10.1145/2854038.2854039.

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Glaesemann, K. R. "Recent Advances in Modeling Hugoniots with Cheetah." In SHOCK COMPRESSION OF CONDENSED MATTER - 2005: Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter. AIP, 2006. http://dx.doi.org/10.1063/1.2263373.

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Xu, Hui, Chong Zhang, Jiaxing Wang, Deqiang Ouyang, Yu Zheng, and Jie Shao. "Exploring Parameter Space with Structured Noise for Meta-Reinforcement Learning." In Twenty-Ninth International Joint Conference on Artificial Intelligence and Seventeenth Pacific Rim International Conference on Artificial Intelligence {IJCAI-PRICAI-20}. California: International Joint Conferences on Artificial Intelligence Organization, 2020. http://dx.doi.org/10.24963/ijcai.2020/436.

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Efficient exploration is a major challenge in Reinforcement Learning (RL) and has been studied extensively. However, for a new task existing methods explore either by taking actions that maximize task agnostic objectives (such as information gain) or applying a simple dithering strategy (such as noise injection), which might not be effective enough. In this paper, we investigate whether previous learning experiences can be leveraged to guide exploration of current new task. To this end, we propose a novel Exploration with Structured Noise in Parameter Space (ESNPS) approach. ESNPS utilizes meta-learning and directly uses meta-policy parameters, which contain prior knowledge, as structured noises to perturb the base model for effective exploration in new tasks. Experimental results on four groups of tasks: cheetah velocity, cheetah direction, ant velocity and ant direction demonstrate the superiority of ESNPS against a number of competitive baselines.
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Li, Liangyue, Hanghang Tong, Yanghua Xiao, and Wei Fan. "Cheetah: Fast Graph Kernel Tracking on Dynamic Graphs." In Proceedings of the 2015 SIAM International Conference on Data Mining. Philadelphia, PA: Society for Industrial and Applied Mathematics, 2015. http://dx.doi.org/10.1137/1.9781611974010.32.

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Reports on the topic "Cheetah"

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Voss, L. CHEETAH final. Office of Scientific and Technical Information (OSTI), January 2023. http://dx.doi.org/10.2172/1959659.

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Voss, L. CHEETAH abbreviated final. Office of Scientific and Technical Information (OSTI), January 2023. http://dx.doi.org/10.2172/1960488.

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Fried, L. E. CHEETAH 1.0 user`s manual. Office of Scientific and Technical Information (OSTI), June 1994. http://dx.doi.org/10.2172/10165726.

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Fried, L., and P. Souers. CHEETAH: A next generation thermochemical code. Office of Scientific and Technical Information (OSTI), November 1994. http://dx.doi.org/10.2172/95184.

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Fried, L. E. CHEETAH: A fast thermochemical code for detonation. Office of Scientific and Technical Information (OSTI), November 1993. http://dx.doi.org/10.2172/10154126.

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Fried, L. E. ,. Howard, W. M. ,. Souers, P. C. Adding kinetics and hydrodynamics to the CHEETAH thermochemical code. Office of Scientific and Technical Information (OSTI), January 1997. http://dx.doi.org/10.2172/488808.

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Stubbs, T., and R. Heinle. CHEEDAM containment data report. Office of Scientific and Technical Information (OSTI), April 1996. http://dx.doi.org/10.2172/397117.

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The microtine rodents of the Cheetah Room fauna, Hamilton Cave, West Virginia, and the spontaneous origin of Synaptomys. US Geological Survey, 1988. http://dx.doi.org/10.3133/b1853.

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