| Records |
| Author |
McGreevy, P.D.; Richardson, J.D.; Nicol, C.J.; Lane, J.G. |
| Title |
Radiographic and endoscopic study of horses performing an oral based stereotypy |
Type |
Journal Article |
| Year |
1995 |
Publication |
Equine veterinary journal |
Abbreviated Journal |
Equine Vet J |
| Volume |
27 |
Issue |
2 |
Pages |
92-95 |
| Keywords |
Animals; Endoscopy/*veterinary; Esophagus/physiopathology/radiography; Female; Fluoroscopy/veterinary; Horse Diseases/physiopathology/*psychology/radiography; Horses; Male; Pharynx/physiopathology/radiography; *Stereotyped Behavior; Video Recording |
Abstract  |
There is confusion in the veterinary literature concerning the definition of oral based stereotypies in the horse. This study reports the use of fluoroscopy and endoscopy during cribbiting/wind-sucking in afflicted horses. This permitted observations of movements of the pharyngeal and oesophageal tissues and of the air column within during the stereotypic behaviour. The findings reported show that the sequence of events during crib-biting/wind-sucking is not related to deglutition and that air is not swallowed to the stomach. Transient dilation of the upper oesophagus was recorded and the characteristic noise of wind-sucking coincided with the in-rush of air through the cricopharynx. The oesophageal distension was relieved when the air returned to the pharynx although small quantities passed caudally. It is proposed that the role of contraction of the strap muscles of the neck is to create a pressure gradient in the soft tissues surrounding the oesophagus which provokes movement of air from the pharynx into the oesophagus. The findings suggest that the definitions currently used in the sale of horses are in need of revision. |
| Address |
Department of Clinical Veterinary Science, University of Bristol, Langford, UK |
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Thesis |
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Place of Publication |
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Editor |
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| Language |
English |
Summary Language |
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Original Title |
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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 |
0425-1644 |
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
PMID:7607156 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
90 |
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| Author |
Klingel, H. |
| Title |
Social organization and reproduction in equids |
Type |
Journal Article |
| Year |
1975 |
Publication |
Journal of Reproduction and Fertility. Supplement |
Abbreviated Journal |
J Reprod Fertil Suppl |
| Volume |
|
Issue |
23 |
Pages |
7-11 |
| Keywords |
Animals; Behavior, Animal; Female; Male; Perissodactyla/*physiology; Reproduction; *Sexual Behavior, Animal; Social Behavior; Territoriality |
| Abstract |
There are two distinct types of social organization and, accordingly, two types of mating systems in equids. In the horse, Plains zebra and Mountain zebra, the adults live in non-territorial and cohesive one-male groups and in stallion groups. The family stallions have exclusive mating rights which are respected by all others. In Grevy's zebra and in the African and Asiatic wild asses, the stallions are permanently territorial and have exclusive mating rights within their territories. Ecological and evolutionary aspects are discussed. |
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Thesis |
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Place of Publication |
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Editor |
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| Language |
English |
Summary Language |
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Original Title |
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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 |
0449-3087 |
ISBN |
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Medium |
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Expedition |
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Conference |
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| Notes |
PMID:1060868 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2303 |
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| Author |
Holmstrom, M.; Magnusson, L.E.; Philipsson, J. |
| Title |
Variation in conformation of Swedish warmblood horses and conformational characteristics of elite sport horses |
Type |
Journal Article |
| Year |
1990 |
Publication |
Equine Veterinary Journal |
Abbreviated Journal |
Equine Vet J |
| Volume |
22 |
Issue |
3 |
Pages |
186-193 |
| Keywords |
Age Factors; Analysis of Variance; Animals; *Breeding; Female; Forelimb/anatomy & histology; Hindlimb/anatomy & histology; Horses/*anatomy & histology/physiology; Least-Squares Analysis; Male; Physical Conditioning, Animal; Regression Analysis; Sex Characteristics |
| Abstract |
The variation in conformation of 356 Swedish Warmblood horses is described, using a quantitative method of measuring horses. Thirty-three of the horses were elite dressage horses, 28 were elite showjumpers, 100 were riding school horses and 195 were unselected four-year-olds. Most horses had a long body form. The average height at the withers was 163.4 cm. Sixty per cent of the horses had a bench knee conformation, 50 per cent had a toe-in conformation of the forelimbs and 80 per cent had outwardly rotated hind limbs. The majority of these deviations were mild or moderate. Conformation was influenced by sex and age. Mares were smaller and had longer bodies and shorter limbs. The elite dressage horses and showjumpers had larger hock angles and more sloping scapulas than other horses. The showjumpers also had smaller fetlock angles in the front limbs. It is suggested that the larger hock angles among the elite horses may be because hocks with small angles are more prone to injury, and because small hock angles may negatively influence the ability to attain the degree of collection necessary for good performance in advanced classes. |
| Address |
Department of Animal Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Skara |
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Place of Publication |
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Editor |
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| Language |
English |
Summary Language |
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Original Title |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
0425-1644 |
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
PMID:2361507 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
3756 |
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| Author |
Devenport, J.A.; Patterson, M.R.; Devenport, L.D. |
| Title |
Dynamic averaging and foraging decisions in horses (Equus callabus) |
Type |
Journal Article |
| Year |
2005 |
Publication |
Journal of Comparative psychology |
Abbreviated Journal |
J. Comp. Psychol. |
| Volume |
119 |
Issue |
3 |
Pages |
352-358 |
| Keywords |
Animals; *Decision Making; *Feeding Behavior; Female; Horses/*psychology; Male; *Memory, Short-Term; Motivation; Orientation; *Social Environment |
| Abstract |
The variability of most environments taxes foraging decisions by increasing the uncertainty of the information available. One solution to the problem is to use dynamic averaging, as do some granivores and carnivores. Arguably, the same strategy could be useful for grazing herbivores, even though their food renews and is more homogeneously distributed. Horses (Equus callabus) were given choices between variable patches after short or long delays. When patch information was current, horses returned to the patch that was recently best, whereas those without current information matched choices to the long-term average values of the patches. These results demonstrate that a grazing species uses dynamic averaging and indicate that, like granivores and carnivores, they can use temporal weighting to optimize foraging decisions. |
| Address |
Department of Psychology, University of Central Oklahoma, 73034, USA. jdevenport@ucok.edu |
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Thesis |
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Place of Publication |
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Editor |
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| Language |
English |
Summary Language |
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Original Title |
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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 |
0735-7036 |
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
PMID:16131264 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
752 |
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| Author |
Blokland, A. |
| Title |
Reaction time responding in rats |
Type |
Journal Article |
| Year |
1998 |
Publication |
Neuroscience and Biobehavioral Reviews |
Abbreviated Journal |
Neurosci Biobehav Rev |
| Volume |
22 |
Issue |
6 |
Pages |
847-864 |
| Keywords |
Amphetamine/pharmacology; Animals; Behavior, Animal/drug effects/*physiology; Conditioning, Operant/drug effects/*physiology; Dopamine Uptake Inhibitors/pharmacology; Dose-Response Relationship, Drug; Male; Rats; Rats, Inbred Lew; Reaction Time/drug effects/*physiology |
| Abstract |
The use of reaction time has a great tradition in the field of human information processing research. In animal research the use of reaction time test paradigms is mainly limited to two research fields: the role of the striatum in movement initiation; and aging. It was discussed that reaction time responding can be regarded as “single behavior”, this term was used to indicate that only one behavioral category is measured, allowing a better analysis of brain-behavior relationships. Reaction time studies investigating the role of the striatum in motor functions revealed that the initiation of a behavioral response is dependent on the interaction of different neurotransmitters (viz. dopamine, glutamate, GABA). Studies in which lesions were made in different brain structures suggested that motor initiation is dependent on defined brain structures (e.g. medialldorsal striatum, prefrontal cortex). It was concluded that the use of reaction time measures can indeed be a powerful tool in studying brain-behavior relationships. However, there are some methodological constraints with respect to the assessment of reaction time in rats, as was tried to exemplify by the experiments described in the present paper. On the one hand one should try to control for behavioral characteristics of rats that may affect the validity of the parameter reaction time. On the other hand, the mean value of reaction time should be in the range of what has been reported in man. Although these criteria were not always met in several studies, it was concluded that reaction time can be validly assessed in rats. Finally, it was discussed that the use of reaction time may go beyond studies that investigate the role of the basal ganglia in motor output. Since response latency is a direct measure of information processing this parameter may provide insight into basic elements of cognition. Based on the significance of reaction times in human studies the use of this dependent variable in rats may provide a fruitful approach in studying brain-behavior relationships in cognitive functions. |
| Address |
Department of Psychology, University of Maastricht, The Netherlands |
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Thesis |
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Place of Publication |
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Editor |
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| Language |
English |
Summary Language |
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Original Title |
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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 |
0149-7634 |
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
PMID:9809315 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2807 |
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| Author |
Tebbich, S.; Seed, A.M.; Emery, N.J.; Clayton, N.S. |
| Title |
Non-tool-using rooks, Corvus frugilegus, solve the trap-tube problem |
Type |
Journal Article |
| Year |
2007 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
10 |
Issue |
2 |
Pages |
225-231 |
| Keywords |
Animals; Behavior, Animal/*physiology; Cognition/*physiology; Crows/*physiology; Female; Male; Problem Solving/*physiology |
| Abstract |
The trap-tube problem is used to assess whether an individual is able to foresee the outcome of its actions. To solve the task, an animal must use a tool to push a piece of food out of a tube, which has a trap along its length. An animal may learn to avoid the trap through a rule based on associative processes, e.g. using the distance of trap or food as a cue, or by understanding relations between cause and effect. This task has been used to test physical cognition in a number of tool-using species, but never a non-tool-user. We developed an experimental design that enabled us to test non-tool-using rooks, Corvus frugilegus. Our modification of the task removed the cognitive requirements of active tool use but still allowed us to test whether rooks can solve the trap-tube problem, and if so how. Additionally, we developed two new control tasks to determine whether rooks were able to transfer knowledge to similar, but novel problems, thus revealing more about the mechanisms involved in solving the task. We found that three out of seven rooks solved the modified trap-tube problem task, showing that the ability to solve the trap-tube problem is not restricted to tool-using animals. We found no evidence that the birds solved the task using an understanding of its causal properties, given that none of the birds passed the novel transfer tasks. |
| Address |
Department of Experimental Psychology, University of Cambridge, Cambridge, CB2 3EB, UK. st281@cam.ac.uk |
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Thesis |
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Place of Publication |
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Editor |
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| Language |
English |
Summary Language |
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Original Title |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
1435-9448 |
ISBN |
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Medium |
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Expedition |
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Conference |
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| Notes |
PMID:17171360 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2429 |
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| Author |
Ducoing, A.M.; Thierry, B. |
| Title |
Tool-use learning in Tonkean macaques (Macaca tonkeana) |
Type |
Journal Article |
| Year |
2005 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
8 |
Issue |
2 |
Pages |
103-113 |
| Keywords |
Animals; *Association Learning; *Behavior, Animal; Cognition; Imitative Behavior; *Intelligence; Macaca/*psychology; Male; *Motor Skills |
| Abstract |
The transmission of tool use is a rare event in monkeys. Such an event arose in a group of semi-free-ranging Tonkean macaques (Macaca tonkeana) in which leaning a pole against the park's fence (branch leaning) appeared and spread to several males. This prompted us to test individual and social learning of this behavior in seven young males. In the first experiment, three males learned individually to obtain a food reward using a wooden pole as a climbing tool. They began using the pole to retrieve the reward only when they could alternatively experience acting on the object and reaching the target. In a second experiment, we first tested whether four other subjects could learn branch leaning after having observed a group-mate performing the task. Despite repeated opportunities to observe the demonstrator, they did not learn to use the pole as a tool. Hence we exposed the latter subjects to individual learning trials and they succeeded in the task. Tool use was not transmitted in the experimental situation, which contrasts with observations in the park. We can conclude that the subjects were not able to recognize the target as such. It is possible that they recognized it and learned the task individually when we alternated the opportunity to act upon the object and to reach the reward. This suggests that these macaques could then have associated the action they exercised upon the pole and the use of the pole as a means to reach the reward. |
| Address |
Centre d'Ecologie et Physiologie Energetiques, Centre National de la Recherche Scientifique, 7 rue de l'Universite, 67000, Strasbourg, France |
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English |
Summary Language |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
1435-9448 |
ISBN |
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Medium |
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Expedition |
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Conference |
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| Notes |
PMID:15449102 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2508 |
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| Author |
de Waal, F.B. |
| Title |
Primates--A natural heritage of conflict resolution |
Type |
Journal Article |
| Year |
2000 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
| Volume |
289 |
Issue |
5479 |
Pages |
586-590 |
| Keywords |
Aggression/*psychology; Animals; Behavior, Animal; *Conflict (Psychology); Female; Humans; Male; *Primates; *Social Behavior; Social Dominance |
| Abstract |
The traditional notion of aggression as an antisocial instinct is being replaced by a framework that considers it a tool of competition and negotiation. When survival depends on mutual assistance, the expression of aggression is constrained by the need to maintain beneficial relationships. Moreover, evolution has produced ways of countering its disruptive consequences. For example, chimpanzees kiss and embrace after fights, and other nonhuman primates engage in similar “reconciliations.” Theoretical developments in this field carry implications for human aggression research. From families to high schools, aggressive conflict is subject to the same constraints known of cooperative animal societies. It is only when social relationships are valued that one can expect the full complement of natural checks and balances. |
| Address |
Living Links, Center for the Advanced Study of Human and Ape Evolution, Yerkes Regional Primate Research Center, and Psychology Department, Emory University, Atlanta, GA 30322, USA. dewaal@emory.edu |
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Place of Publication |
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Editor |
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English |
Summary Language |
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Original Title |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
0036-8075 |
ISBN |
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Medium |
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Expedition |
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Conference |
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| Notes |
PMID:10915614 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
187 |
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| Author |
Pereira, M.E.; Schill, J.L.; Charles, E.P. |
| Title |
Reconciliation in captive Guyanese squirrel monkeys (Saimiri sciureus) |
Type |
Journal Article |
| Year |
2000 |
Publication |
American journal of primatology |
Abbreviated Journal |
Am. J. Primatol. |
| Volume |
50 |
Issue |
2 |
Pages |
159-167 |
| Keywords |
Aggression; Agonistic Behavior; Animals; Conflict (Psychology); Female; Guyana; Male; Saimiri/*psychology; *Social Behavior; Social Dominance |
| Abstract |
The tendency for agonistic interaction to increase the probability of friendly interaction between social partners has been demonstrated across a range of Old World primates. While research on such post-conflict behavior proceeds into an hypothesis-testing phase, new comparative information must accumulate to provide full phylogenetic perspective on primate social behavior. Data from New World and prosimian primates are yet extremely limited. We studied captive squirrel monkeys (Saimiri sciureus) via post-conflict (PC) and matched control (MC) observations and analyzed results using both the PC-MC and time-rule methods. Former opponents maintaining affiliative relationships soon engaged in friendly interaction following large proportions of agonistic interactions, whereas non-affiliated individuals, including virtually all male-female pairs, reconciled conflicts rarely. Close-proximity approaching and huddling contact constituted the principal modes of post-conflict amicability. Agonistic interactions of relatively high intensity were most likely to be reconciled and most likely to be reconciled via physical contact. High vulnerability of Saimiri to predation may have favored this species' strong inclination to reconcile soon after agonistic interaction. Research on free-living populations of this and other primate species is needed to illuminate similarities and differences across taxa. |
| Address |
Department of Biology and Program in Animal Behavior, Bucknell University, Lewisburg, Pennsylvania 17837, USA. mpereira@bucknell.edu |
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Place of Publication |
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English |
Summary Language |
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Original Title |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
0275-2565 |
ISBN |
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Medium |
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Expedition |
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Conference |
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| Notes |
PMID:10676712 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
2878 |
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| Author |
Akins, C.K.; Zentall, T.R. |
| Title |
Imitative learning in male Japanese quail (Coturnix japonica) using the two-action method |
Type |
Journal Article |
| Year |
1996 |
Publication |
Journal of comparative psychology (Washington, D.C. : 1983) |
Abbreviated Journal |
J Comp Psychol |
| Volume |
110 |
Issue |
3 |
Pages |
316-320 |
| Keywords |
Animals; Appetitive Behavior; *Attention; *Coturnix; *Imitative Behavior; Male; *Motivation; Transfer (Psychology) |
| Abstract |
The study of imitative learning in animals has suffered from the presence of a number of confounding motivational and attentional factors (e.g., social facilitation and stimulus enhancement). The two-action method avoids these problems by exposing observers to demonstrators performing a response (e.g., operating a treadle) using 1 of 2 distinctive topographies (e.g., by pecking or by stepping). Japanese quail (Coturnix japonica) observers exposed to conspecific demonstrators showed a high correlation between the topography of the response they observed and the response they performed. These data provide strong evidence for the existence of true imitative learning in an active, precocious bird under conditions that control for alternative accounts. |
| Address |
Department of Psychology, University of Kentucky, Lexington 40506-0044, USA |
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Place of Publication |
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Editor |
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English |
Summary Language |
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Original Title |
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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 |
0735-7036 |
ISBN |
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Medium |
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Expedition |
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Conference |
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| Notes |
PMID:8858851 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
254 |
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