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Author |
Byrne, R.W. |
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Title |
Imitation of novel complex actions: What does the evidence from animals mean? |
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Year |
2002 |
Publication |
Advances in the Study of Behavior |
Abbreviated Journal  |
Adv Stud Behav |
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Volume |
31 |
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Pages |
77-105 |
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Summary Underlying the various behaviors that are classified as imitation, there may be several distinct mechanisms, differing in adaptive function, cognitive basis, and computational power. Experiments reporting “true motor imitation” in animals do not as yet give evidence of production learning by imitation; instead, contextual imitation can explain their data, and this can be explained by a simple mechanism (response facilitation) which matches known neural findings. When imitation serves a function in social mimicry, which applies to a wide range of phenomena from neonatal imitation in humans and great apes to pair-bonding in some bird species, the fidelity of the behavioral match is crucial. Learning of novel behavior can potentially be achieved by matching the outcome of a model's action, and it is argued that vocal imitation by birds is a clear example of this method (which is sometimes called emulation). Alternatively, the behavior itself may be perceived in terms of actions that the observer can perform, and thus it may be copied. If the imitation is linear and stringlike (action level), following the surface form rather than the underlying plan, then its utility for learning new instrumental methods is limited. However, the underlying plan of hierarchically organized behavior is visible in output behavior, in subtle but detectable ways, and imitation could instead be based on this organization (program level), extracted automatically by string parsing. Currently, the most likely candidates for such capacities are all great apes. It is argued that this ability to perceive the underlying plan of action, in addition to allowing highly flexible imitation of novel instrumental methods, may have resulted in the competence to understand the intentions (theory of mind) of others. |
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Academic Press |
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San Diego |
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Snowdon, C. T.; Roper, T. J.;Rosenblatt,J. S. |
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refbase @ user @ |
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746 |
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Author |
Moons, C.; Heleski, C.R.; Leece, C.M.; Zanella, A.J. |
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Title |
Conflicting Results in the Association Between Plasma and Salivary Cortisol Levels in Foals |
Type |
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2002 |
Publication |
Havemeier Workshop |
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Introduction
Glucocorticoids are present in many biological fluids as a free fraction or bound to Corticoid
Binding Globulins (CBG) (Matteri et al, 2000). There are conflicting claims regarding the validity of
saliva as a biological fluid to measure cortisol in horses (Lebelt et al, 1996; McGreevy and Pell, 1998;
van der Kolk et al, 2001). Measuring changes in salivary cortisol levels in normal horses and horses
with Cushing`s disease van der Kolk and collaborators (2001) demonstrated the validity of saliva to
assess adrenal function. Puzzling results were reported by McGreevy and Pell (1998) who suggested
that plasma and salivary cortisol concentrations in horses showing oral stereotypies were correlated
but this association was non-existent in control animals. Investigating the responses of foals to
branding and foot-trimming Zanella et al (unpublished results) were unable to identify a relationship
between plasma and salivary cortisol levels in foals. In several species, levels of cortisol in plasma and
saliva are tightly correlated (Fenske, 1996). Cortisol found in blood consists of a fraction bound to
corticoid binding globulin (CBG) and a free, unbound fraction. Free cortisol represents the
biologically active fraction of this steroid hormone. Salivary cortisol reflects the unbound fraction
found in plasma or serum and it passes readily through the parotid membrane (Riad-Fahmy, 1983;
Horning Walker et al,1977). Unbound steroids transfer rapidly between plasma and saliva
(Walker,1989; Scott et al 1990). Saliva flow-rate does not appear to influence saliva cortisol levels in
different species (Hubert and de Jong-Meyer, 1989; Walker 1989, Scott et a, 1990). In horses, Lebelt
et al (1996) reported that salivary and plasma total cortisol in stallions were correlated. We
hypothesized that changes in salivary cortisol in foals would show a pattern that is correlated to that of
plasma free and plasma total cortisol concentrations in foals. In addition, we anticipated that the lack
of good sampling techniques provides an explanation for the failure in determining the association
between salivary and plasma cortisol in foals. |
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refbase @ user @ |
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470 |
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Author |
Wakeling,E |
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Title |
Feral Horses of the West |
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Conference Volume |
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2002 |
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516 |
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Author |
Huebener, E. |
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Title |
Schmeichelnder Sitz, atmender Schenkel, flüsternder Zügel |
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Year |
2002 |
Publication |
Olms Presse, Hildesheim |
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2. erweiterte Auflage |
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220 |
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HÜBENER, EBERHARD, Schmeichelnder Sitz, atmender Schenkel,
flüsternder Zügel
Vom feinfühligen, partnerschaftlichen Umgang mit dem Pferd und über Nöte
der bundesdeutschen Reiterei. Mit einem Geleitwort von Dr. Reiner Klimke
2. ergänzte Aufl. Hildesheim 2002. 223 S. mit 63 Abb., davon 3 farbig. Gebunden. Reihe:
(NOVA HIPPOLOGICA.) ISBN: 3-487-08408-2
Dieses Buch beantwortet eine Reihe zentraler Fragen zur Reitlehre und zum
Umgang mit dem Pferd gründlich und leicht verständlich. Es ist daher hilfreich
für alle, die sich am und auf dem Pferd gern helfen lassen. Ob sie nun nur zum
Vergnügen oder mit turniersportlichen Ambitionen reiten. Ob sie lernen oder
lehren.
Der vorliegenden zweiten Auflage ist eine neue Arbeit des Autors beigebunden:
Nachdem eine Video-Analyse seinen “selbsttätigen Schenkel” bestätigt hat, wird
jetzt endlich auch das “Sitz-Rätsel” definitiv gelöst.
Die Video-Technik hat ermöglicht, das Zusammenspiel von Gangart, Bewegungen
von Pferderumpf und -rücken, Sitz des Reiters und Hilfengebung zum Nutzen
des Reiter-Rückgrats, der keineswegs beliebig belastbaren Wirbelsäule des
Pferdes und kultivierten, feinfühligen Reitens zu entschlüsseln.
Reitunterricht kann anders aussehen. Irrwege sind vermeidbar geworden. |
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0948-9708 |
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3-487-08408-2 |
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Call Number |
Reiten Lesen Denken @ eberhardhuebener @ |
Serial |
874 |
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Author |
Huebener, E. |
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Title |
Coaxing seat, breathing leg, whispering reins |
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2002 |
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2nd edition |
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220 |
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0948-9708 |
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3-487-08408-2 |
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Reiten Lesen Denken @ eberhardhuebener @ |
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875 |
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Author |
Dugatkin, L.A. |
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Title |
Cooperation in animals: An evolutionary overview |
Type |
Journal Article |
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Year |
2002 |
Publication |
Biology and Philosophy |
Abbreviated Journal |
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17 |
Issue |
4 |
Pages |
459-476 |
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Abstract |
Evolutionary biologists have grappled with the question of the emergenceand maintenance of cooperation since Darwin first listed animal cooperation asapotential problem for his theory of natural selection. Here I review four pathsthat have been delineated in the study of intra-specific cooperation amonganimals. These paths – kinship, reciprocity, byproduct mutualism andgroupselection – serve as a starting point for behavioral ecologistsinterestedstudying the initiation and maintenance of cooperation. After reviewing theempirical and theoretical underpinnings of these paths to cooperation, I touchupon some recent work that has attempted to examine (or reexamine) the role ofphylogeny, punishment and morality in the light of cooperative behavior. |
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Equine Behaviour @ team @ |
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2179 |
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Author |
King, S.R.B.; Gurnell, J. |
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Behavioural ecology of Przewalski horses (Equus przewalskii) reintroduced to Hustai National Park, Mongolia |
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2002 |
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Queen Mary, University of London |
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Ph.D. thesis |
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Equine Behaviour @ team @ |
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2320 |
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Author |
Moehlman, P. D. (ed) |
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Title |
Equids: zebras, asses and horses: status survey and conservation action plan |
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Book Whole |
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Year |
2002 |
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Once one of the most abundant grazing animals, now only seven species remain. Equids persist in some of the harshest climates and terrains in the world, habitats which are also home to many human populations. Conservation will depend on local nomadic pastoralists participating in, and benefiting from, the conservation management of their areas. Included are summaries of the conservation status, biology and ecology of wild zebras, asses, and horses and recommendations for conservation action
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Equids: Zebras, Asses And Horses: Status Survey And Conservation Action Plan
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Equids: Zebras, Asses And Horses: Status Survey And Conservation Action Plan (Paperback)
by Patricia D Moehlman (Editor)
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Editorial Reviews
Book Description
The new Equid Action Plan provides current knowledge on the biology, ecology and conservation status of wild zebras, asses, and horses. It specifies what information is lacking, and prioritizes needed conservation actions. The Action Plan also provides chapters on equid taxonomy, genetics, reproductive biology, and population dynamics. These chapters highlight unsolved issues of taxonomy and genetics. They also provide information and insight into the special demographic and genetic challenges of managing small populations. The chapter on disease provides a review of documented equine disease and epidemiology and focuses on priorities for equid conservation health. The final chapter deals with the importance of developing an assessment methodology that explicitly considers the role of equids in ecosystems and the ecological processes that are necessary for ecosystem viability. The approach of combining ecological field studies and ecosystem modeling should prove useful for the scientific management and conservation of wild equids worldwide. These chapters provide research and conservation practitioners with new information and paradigms. |
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IUCN |
Place of Publication |
Gland, Switzerland |
Editor |
Moehlman, P. D. |
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978-2831706474 |
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no |
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Equine Behaviour @ team @ |
Serial |
2384 |
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Author |
Davies Morel, M.C.G.; Newcombe, J.R.; Holland, S.J. |
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Title |
Factors affecting gestation length in the Thoroughbred mare |
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Journal Article |
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Year |
2002 |
Publication |
Animal Reproduction Science |
Abbreviated Journal |
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Volume |
74 |
Issue |
3-4 |
Pages |
175-185 |
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Gestation length; Mare age; Foals; Month of year; Ovulation-mating interval |
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Abstract |
In order to assist in the accurate prediction of the timing of parturition in the mare true gestation length, along with the potential effect of a number of factors, was investigated. Data from 433 Thoroughbred foal pregnancies were used. Sequential ultrasonic scanning allowed the true gestation length (fertilisation-parturition) to be ascertained, as apposed to previous work, which used the mating-parturition interval. An average gestation length of 344.1+/-0.49 days was evident. Colt foal pregnancies were significantly (P<0.001) longer (346.2+/-0.72) than fillies (342.4+/-0.65). Month of birth had a significant effect on gestation length in all foals (P<0.001). With foals born in January having the shortest gestation lengths and those born in April the longest. Mare age, year of birth, stallion age, stud farm and the interval between ovulation and mating had no significant effect. It is concluded that (i) the gestation length range (315-388 days), all resulting in viable foals is noteworthy and of clinical importance when considering the classification of dysmaturity in foals, (ii) mares carrying colt foals due to be born in the middle of the breeding season (April) are likely to have the longer gestation lengths. |
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Equine Behaviour @ team @ |
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3638 |
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Author |
Waring, George H. (ed) |
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Title |
Horse Behavior: The Behavioral Traits and Adaptations of Domestic and Wild Horses, Including Ponies |
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2002 |
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Noyes Publications |
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Reviews
Synopsis
The second edition of this informative book remains the most comprehensive and current overview of the behavioral traits and adaptations of horses. The book integrates findings from hundreds of international researchers to provide the reader with a factual synthesis of the behaviour of domestic and feral horses. Building on the strengths of the first edition, the author has thoroughly updated coverage of horse ancestry, development, perception, learning, play, social behavioral manipulation, maintenance activities, and sexual behaviour. Throughout these and other chapters, more emphasis has been given to animal husbandry and management. Additionally, the second edition includes an all-new section on ecological influences on activity patterns, habitat utilization, social behaviour and reproduction. An expanded section on applied ethnology provides behavioral considerations or management and insight regarding the behavioral indicators of horse health and well being. This is followed with an updated appendix listing behavioral symptoms and possible causes. The text contains numerous tables and nearly 100 illustrations and photos. Interesting Facts: Rich with international data, incorporated into text, tables, and figures Two new chapters on ecological influences dealing with interactions between environment feeding, ranging, shelter seeking, reproductive and social behavior, among other topics New chapter on behavioral considerations in horse management, plus updated material on health and well being, surveys atypical symptoms ranging from posture to social behaviour Update appendix provides an extensive listing of behavioral symptoms, with identifications of possible associated problems. |
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Noyes Publications |
Place of Publication |
Nrowich, NY |
Editor |
Waring, George H. |
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978-0815514848 |
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no |
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Equine Behaviour @ team @ |
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4233 |
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