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Author |
Fragaszy, D.; Johnson-Pynn, J.; Hirsh, E.; Brakke, K. |
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Title |
Strategic navigation of two-dimensional alley mazes: comparing capuchin monkeys and chimpanzees |
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Journal Article |
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Year |
2003 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
6 |
Issue |
3 |
Pages  |
149-160 |
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Animals; Cebus/*physiology; Choice Behavior/*physiology; Computer Peripherals; Female; Male; Maze Learning/*physiology; Neuropsychological Tests; Pan troglodytes/*physiology; Space Perception/*physiology; Species Specificity; User-Computer Interface |
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Abstract |
Planning is an important component of cognition that contributes, for example, to efficient movement through space. In the current study we presented novel two-dimensional alley mazes to four chimpanzees and three capuchin monkeys to identify the nature and efficiency of planning in relation to varying task parameters. All the subjects solved more mazes without error than expected by chance, providing compelling evidence that both species planned their choices in some manner. The probability of making a correct choice on mazes designed to be more demanding and presented later in the testing series was higher than on earlier, simpler mazes (chimpanzees), or unchanged (capuchin monkeys), suggesting microdevelopment of strategic choice. Structural properties of the mazes affected both species' choices. Capuchin monkeys were less likely than chimpanzees to take a correct path that initially led away from the goal but that eventually led to the goal. Chimpanzees were more likely to make an error by passing a correct path than by turning onto a wrong path. Chimpanzees and one capuchin made more errors on choices farther in sequence from the goal. Each species corrected errors before running into the end of an alley in approximately 40% of cases. Together, these findings suggest nascent planning abilities in each species, and the prospect for significant development of strategic planning capabilities on tasks presenting multiple simultaneous or sequential spatial relations. The computerized maze paradigm appears well suited to investigate movement planning and spatial perception in human and nonhuman primates alike. |
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Department of Psychology, University of Georgia, Athens, GA 30602, USA. doree@arches.uga.edu |
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1435-9448 |
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PMID:12955584 |
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Equine Behaviour @ team @ |
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2557 |
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Author |
Kristiansen, K.K.; Kold, S.E. |
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Title |
Multivariable analysis of factors influencing outcome of 2 treatment protocols in 128 cases of horses responding positively to intra-articular analgesia of the distal interphalangeal joint |
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Journal Article |
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Year |
2007 |
Publication |
Equine Veterinary Journal |
Abbreviated Journal |
Equine Vet J |
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Volume |
39 |
Issue |
2 |
Pages |
150-156 |
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Keywords |
Analgesia/methods/*veterinary; Anesthesia, Local/methods/veterinary; Animals; Anti-Inflammatory Agents/therapeutic use; Female; Foot Diseases/drug therapy/prevention & control/*veterinary; Glycosaminoglycans/therapeutic use; Horse Diseases/*drug therapy/prevention & control; Horses; Injections, Intra-Articular/*veterinary; Joint Diseases/drug therapy/prevention & control/veterinary; Lameness, Animal/drug therapy/prevention & control; Male; Methylprednisolone/analogs & derivatives/therapeutic use; Multivariate Analysis; Pain/prevention & control/veterinary; Retrospective Studies; Time Factors; *Toe Joint/drug effects/pathology; Treatment Outcome |
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REASONS FOR PERFORMING STUDY: There is limited knowledge available of factors influencing response to treatments of the DIP-joint in horses with lameness responding to diagnostic analgesia of the DIP-joint. For this reason a multivariable statistical analysis was performed. HYPOTHESIS: Horses with lameness reduced by > or = 75% 10 min after intra-articular analgesia of the DIP-joint, can be treated successfully by intra-articular medication of the joint. Multiple factors influence the response to treatment. METHODS: The study was performed retrospectively based on clinical records of horses treated with either polysulphated glycosaminoglycan (PSGAG) or methylprednisolone acetate (MPA) in the DIP-joint between January 1996 and January 2003. Information was collected from clinical records and from the owners of the horses via a detailed questionnaire, in which they described their perception of the outcome a minimum of one year after treatment. Allocation of the horses to the 2 treatment groups was done mainly because of a change in treatment policy. In Regime A all horses received 3 intra-articular injections of PSGAG approximately 8 days apart, whereas in Regime B all horses received a single intra-articular injection of MPA as a first treatment. If the horse did not improve sufficiently to return to work by 4 weeks, a series of 3 intra-articular PSGAG injections was administered. RESULTS: Of the horses receiving Regime A, 67% had a successful outcome, compared with 46% of the group receiving Regime B. A significantly better result was obtained in dressage horses than in jumping horses (eventing and showjumping). Other variables such as age, duration of lameness, distribution of lameness, degree of lameness, response to DIP-joint analgesia and radiographic observations were also associated with success of treatment. CONCLUSIONS AND POTENTIAL RELEVANCE: There is a rationale for using either PSGAG or MPA intra-articularly in the treatment of lameness, reduced > or = 75% within 10 min of analgesia of the DIP-joint. |
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Willesley Equine Clinic Ltd., Tetbury, Gloucestershire, GL8 8QU UK |
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0425-1644 |
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PMID:17378444 |
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no |
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Equine Behaviour @ team @ |
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3707 |
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Author |
Ganswindt, A.; Palme, R.; Heistermann, M.; Borragan, S.; Hodges, J.K. |
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Title |
Non-invasive assessment of adrenocortical function in the male African elephant (Loxodonta africana) and its relation to musth |
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Journal Article |
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Year |
2003 |
Publication |
General and Comparative Endocrinology |
Abbreviated Journal |
Gen Comp Endocrinol |
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Volume |
134 |
Issue |
2 |
Pages |
156-166 |
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Keywords |
Adrenal Cortex/*metabolism/secretion; Adrenal Cortex Function Tests/methods/*veterinary; Adrenocorticotropic Hormone/physiology; Animals; Carbon Isotopes/diagnostic use; Chromatography, High Pressure Liquid/veterinary; Elephants/*metabolism/urine; Feces/*chemistry; Glucocorticoids/analysis/urine; Hydrocortisone/*analysis/diagnostic use/urine; Immunoenzyme Techniques/methods/veterinary; Male; Reproduction/physiology; Sexual Behavior, Animal/physiology; Stress, Psychological/diagnosis/*physiopathology; Testosterone/*analysis/diagnostic use/urine |
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Adult male elephants periodically show the phenomenon of musth, a condition associated with increased aggressiveness, restlessness, significant weight reduction and markedly elevated androgen levels. It has been suggested that musth-related behaviours are costly and that therefore musth may represent a form of physiological stress. In order to provide data on this largely unanswered question, the first aim of this study was to evaluate different assays for non-invasive assessment of adrenocortical function in the male African elephant by (i) characterizing the metabolism and excretion of [3H]cortisol (3H-C) and [14C]testosterone (14C-T) and (ii) using this information to evaluate the specificity of four antibodies for determination of excreted cortisol metabolites, particularly with respect to possible cross-reactions with androgen metabolites, and to assess their biological validity using an ACTH challenge test. Based on the methodology established, the second objective was to provide data on fecal cortisol metabolite concentrations in bulls during the musth and non-musth condition. 3H-C (1 mCi) and 14C-T (100 microCi) were injected simultaneously into a 16 year old male and all urine and feces collected for 30 and 86 h, respectively. The majority (82%) of cortisol metabolites was excreted into the urine, whereas testosterone metabolites were mainly (57%) excreted into the feces. Almost all radioactive metabolites recovered from urine were conjugated (86% 3H-C and 97% 14C-T). In contrast, 86% and >99% of the 3H-C and 14C-T metabolites recovered from feces consisted of unconjugated forms. HPLC separations indicated the presence of various metabolites of cortisol in both urine and feces, with cortisol being abundant in hydrolysed urine, but virtually absent in feces. Although all antibodies measured substantial amounts of immunoreactivity after HPLC separation of peak radioactive samples and detected an increase in glucocorticoid output following the ACTH challenge, only two (in feces against 3alpha,11-oxo-cortisol metabolites, measured by an 11-oxo-etiocholanolone-EIA and in urine against cortisol, measured by a cortisol-EIA) did not show substantial cross-reactivity with excreted 14C-T metabolites and could provide an acceptable degree of specificity for reliable assessment of glucocorticoid output from urine and feces. Based on these findings, concentrations of immunoreactive 3alpha,11-oxo-cortisol metabolites were determined in weekly fecal samples collected from four adult bulls over periods of 11-20 months to examine whether musth is associated with increased adrenal activity. Results showed that in each male levels of these cortisol metabolites were not elevated during periods of musth, suggesting that in the African elephant musth is generally not associated with marked elevations in glucocorticoid output. Given the complex nature of musth and the variety of factors that are likely to influence its manifestation, it is clear, however, that further studies, particularly on free-ranging animals, are needed before a possible relationship between musth and adrenal function can be resolved. This study also clearly illustrates the potential problems associated with cross-reacting metabolites of gonadal steroids in EIAs measuring glucocorticoid metabolites. This has to be taken into account when selecting assays and interpreting results of glucocorticoid metabolite analysis, not only for studies in the elephant but also in other species. |
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German Primate Centre, Department of Reproductive Biology, Kellnerweg 4, 37077 Gottingen, Germany. ganswindt@www.dpz.gdwg.de |
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0016-6480 |
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PMID:14511986 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
4085 |
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Author |
Stahl, F.; Dorner, G. |
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Title |
Responses of salivary cortisol levels to stress-situations |
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Journal Article |
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Year |
1982 |
Publication |
Endokrinologie |
Abbreviated Journal |
Endokrinologie |
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Volume |
80 |
Issue |
2 |
Pages |
158-162 |
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Keywords |
Adrenocorticotropic Hormone/diagnostic use; Anxiety Disorders/metabolism; Circadian Rhythm; Cushing Syndrome/metabolism; Fear/physiology; Female; Humans; Hydrocortisone/*metabolism; Male; Pain/metabolism; Pregnancy; Saliva/*metabolism; Stress/*metabolism |
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A procedure is described for determining salivary cortisol levels by a competitive protein-binding assay using horse transcortin. The collection of saliva was performed by means of filter paper-strips. Filter paper samples are more than 5 days stable after air-drying. In this form, the samples could be stored without refrigerator or deep-freezer and, if necessary, sent by post to the laboratory without any special precaution. Stressful situation of either painful or anxious origin were associated with an adequate increase of salivary cortisol levels. The increases were 157 to 230% of the initial or normal values dependent on the kind of stress. The mean values in 4 cases of Cushing's syndrome were 380% and 1 hour after 25 I.U. ACTH 690% higher than those in normal persons. In normal persons, a well-defined circadian rhythm has been observed. |
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0013-7251 |
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PMID:6297880 |
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no |
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Call Number |
refbase @ user @ |
Serial |
4056 |
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Author |
Washburn, D.A.; Astur, R.S. |
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Title |
Exploration of virtual mazes by rhesus monkeys (Macaca mulatta) |
Type |
Journal Article |
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Year |
2003 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
6 |
Issue |
3 |
Pages |
161-168 |
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Keywords |
Animals; Choice Behavior/*physiology; Computer Peripherals; Macaca mulatta/*physiology; Male; Maze Learning/*physiology; Space Perception/*physiology; User-Computer Interface |
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A chasm divides the huge corpus of maze studies found in the literature, with animals tested in mazes on the one side and humans tested with mazes on the other. Advances in technology and software have made possible the production and use of virtual mazes, which allow humans to navigate computerized environments and thus for humans and nonhuman animals to be tested in comparable spatial domains. In the present experiment, this comparability is extended even further by examining whether rhesus monkeys (Macaca mulatta) can learn to explore virtual mazes. Four male macaques were trained to manipulate a joystick so as to move through a virtual environment and to locate a computer-generated target. The animals succeeded in learning this task, and located the target even when it was located in novel alleys. The search pattern within the maze for these animals resembled the pattern of maze navigation observed for monkeys that were tested on more traditional two-dimensional computerized mazes. |
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Department of Psychology, Georgia State University, Atlanta, GA 30303, USA. dwashburn@gsu.edu |
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1435-9448 |
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PMID:12750961 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2569 |
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Author |
Iversen, I.H.; Matsuzawa, T. |
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Title |
Development of interception of moving targets by chimpanzees (Pan troglodytes) in an automated task |
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Journal Article |
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Year |
2003 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
6 |
Issue |
3 |
Pages |
169-183 |
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Keywords |
Animals; Female; Hand/physiology; Motion Perception/*physiology; Movement/physiology; Pan troglodytes/*physiology; Spatial Behavior/*physiology; *Task Performance and Analysis; User-Computer Interface; Visual Perception/physiology |
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The experiments investigated how two adult captive chimpanzees learned to navigate in an automated interception task. They had to capture a visual target that moved predictably on a touch monitor. The aim of the study was to determine the learning stages that led to an efficient strategy of intercepting the target. The chimpanzees had prior training in moving a finger on a touch monitor and were exposed to the interception task without any explicit training. With a finger the subject could move a small “ball” at any speed on the screen toward a visual target that moved at a fixed speed either back and forth in a linear path or around the edge of the screen in a rectangular pattern. Initial ball and target locations varied from trial to trial. The subjects received a small fruit reinforcement when they hit the target with the ball. The speed of target movement was increased across training stages up to 38 cm/s. Learning progressed from merely chasing the target to intercepting the target by moving the ball to a point on the screen that coincided with arrival of the target at that point. Performance improvement consisted of reduction in redundancy of the movement path and reduction in the time to target interception. Analysis of the finger's movement path showed that the subjects anticipated the target's movement even before it began to move. Thus, the subjects learned to use the target's initial resting location at trial onset as a predictive signal for where the target would later be when it began moving. During probe trials, where the target unpredictably remained stationary throughout the trial, the subjects first moved the ball in anticipation of expected target movement and then corrected the movement to steer the ball to the resting target. Anticipatory ball movement in probe trials with novel ball and target locations (tested for one subject) showed generalized interception beyond the trained ball and target locations. The experiments illustrate in a laboratory setting the development of a highly complex and adaptive motor performance that resembles navigational skills seen in natural settings where predators intercept the path of moving prey. |
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Department of Psychology, University of North Florida, Jacksonville, FL 32224, USA. iiversen@unf.edu |
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1435-9448 |
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PMID:12761656 |
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no |
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Call Number |
Equine Behaviour @ team @ |
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2567 |
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Author |
Nelson, G.S. |
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Title |
Onchocerciasis |
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Journal Article |
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1970 |
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Advances in Parasitology |
Abbreviated Journal |
Adv Parasitol |
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8 |
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173-224 |
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Keywords |
Africa; Animals; Anthelmintics/therapeutic use; Artiodactyla; Blindness/etiology; Cattle; Circadian Rhythm; Ddt; Diethylcarbamazine/therapeutic use; Diptera/anatomy & histology/growth & development; Dwarfism/etiology; Ecology; Eye/pathology; Feeding Behavior; Female; Geography; Haplorhini; Hernia, Femoral/etiology; Horses; Humans; Insect Vectors/growth & development; Larva/growth & development; Male; Onchocerca/classification/growth & development; *Onchocerciasis/diagnosis/drug therapy/epidemiology/immunology/pathology/prevention & control/veterinary; Primates; Serologic Tests; Skin/pathology; Skin Tests; Suramin/therapeutic use |
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0065-308X |
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PMID:4997515 |
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Equine Behaviour @ team @ |
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2738 |
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Author |
Tomasello, M.; Davis-Dasilva, M.; Camak, L.; Bard, K. |
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Title |
Observational learning of tool-use by young chimpanzees |
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Journal Article |
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1987 |
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Abbreviated Journal |
Human Evolution |
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2 |
Issue |
2 |
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175-183 |
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Chimpanzees; Observational Learning; Tool-Use |
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In the current study two groups of young chimpanzees (4–6 and 8–9 years old) were given a T-bar and a food item that could only be reached by using the T-bar. Experimental subjects were given the opportunity to observe an adult using the stick as a tool to obtain the food; control subjects were exposed to the adult but were given no demonstration. Subjects in the older group did not learn to use the tool. Subjects in the younger group who were exposed to the demonstrator learned to use the stick as a tool much more readily than those who were not. None of the subjects demonstrated an ability to imitatively copy the demonstrator's precise behavioral strategies. More than simple stimulus enhancement was involved, however, since both groups manipulated the T-bar, but only experimental subjects used it in its function as a tool. Our findings complement naturalistic observations in suggesting that chimpanzee tool-use is in some sense «culturally transmitted» — though perhaps not in the same sense as social-conventional behaviors for which precise copying of conspecifics is crucial. |
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Kluwer Academic Publishers |
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English |
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0393-9375 |
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Equine Behaviour @ team @ |
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5915 |
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Author |
Bentley-Condit, V.; Smith, E.O. |
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Title |
Animal tool use: current definitions and an updated comprehensive catalog |
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Journal Article |
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Year |
2010 |
Publication |
Behaviour |
Abbreviated Journal |
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147 |
Issue |
2 |
Pages |
185-32 |
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TOOL USE; CATALOG; ANIMAL |
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Despite numerous attempts to define animal tool use over the past four decades, the definition remains elusive and the behaviour classification somewhat subjective. Here, we provide a brief review of the definitions of animal tool use and show how those definitions have been modified over time. While some aspects have remained constant (i.e., the distinction between 'true' and 'borderline' tool use), others have been added (i.e., the distinction between 'dynamic' and 'static' behaviours). We present an updated, comprehensive catalog of documented animal tool use that indicates whether the behaviours observed included any 'true' tool use, whether the observations were limited to captive animals, whether tool manufacture has been observed, and whether the observed tool use was limited to only one individual and, thus, 'anecdotal' (i.e., N = 1). Such a catalog has not been attempted since Beck (1980). In addition to being a useful reference for behaviourists, this catalog demonstrates broad tool use and manufacture trends that may be of interest to phylogenists, evolutionary ecologists, and cognitive evolutionists. Tool use and tool manufacture are shown to be widespread across three phyla and seven classes of the animal kingdom. Moreover, there is complete overlap between the Aves and Mammalia orders in terms of the tool use categories (e.g., food extraction, food capture, agonism) arguing against any special abilities of mammals. The majority of tool users, almost 85% of the entries, use tools in only one of the tool use categories. Only members of the Passeriformes and Primates orders have been observed to use tools in four or more of the ten categories. Thus, observed tool use by some members of these two orders (e.g., Corvus, Papio) is qualitatively different from that of all other animal taxa. Finally, although there are similarities between Aves and Mammalia, and Primates and Passeriformes, primate tool use is qualitatively different. Approximately 35% of the entries for this order demonstrate a breadth of tool use (i.e., three or more categories by any one species) compared to other mammals (0%), Aves (2.4%), and the Passeriformes (3.1%). This greater breadth in tool use by some organisms may involve phylogenetic or cognitive differences � or may simply reflect differences in length and intensity of observations. The impact that tool usage may have had on groups' respective ecological niches and, through niche-construction, on their respective evolutionary trajectories remains a subject for future study. |
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Equine Behaviour @ team @ :/content/journals/10.1163/000579509x12512865686555 |
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Author |
Arluke, A. |
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Title |
The use of dogs in medical and veterinary training: understanding and approaching student uneasiness |
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Journal Article |
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Year |
2004 |
Publication |
Journal of Applied Animal Welfare Science : JAAWS |
Abbreviated Journal |
J Appl Anim Welf Sci |
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Volume |
7 |
Issue |
3 |
Pages |
197-204 |
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Keywords |
*Animal Experimentation; Animals; *Animals, Laboratory; Cadaver; Comprehension; Dogs; Education, Veterinary/*ethics/*methods; Humans; Massachusetts; Schools, Veterinary; Students, Medical/*psychology; Biomedical and Behavioral Research |
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Abstract |
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Address |
Tajen Institute of Technology, Taiwan. a.arluke@neu.edu |
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Place of Publication |
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Language |
English |
Summary Language |
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Original Title |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
1088-8705 |
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Notes |
PMID:15498727; KIE: KIE Bib: animal experimentation |
Approved |
no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2755 |
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