| Records |
| Author |
Houpt, K.A.; Wolski, T.R. |
| Title |
Stability of equine hierarchies and the prevention of dominance related aggression |
Type |
Journal Article |
| Year |
1980 |
Publication |
Equine veterinary journal |
Abbreviated Journal |
Equine Vet J |
| Volume |
12 |
Issue |
1 |
Pages |
15-18 |
| Keywords |
*Aggression; Animals; *Behavior, Animal; Feeding Behavior; Female; *Hierarchy, Social; *Horses; Humans; Male; Maternal Behavior; *Social Dominance |
| Abstract |
The dominance hierarchy of a herd of 10 Thoroughbred mares was determined twice, at an interval of 18 months, using paired feeding tests. Each mare's rank was correlated significantly between the 2 tests. This indicated that the hierarchy within the herd was stable. The offspring of dominant and subordinate mares were also tested for dominance in their own age groups. The offspring of dominant mares tended to be near the top of the hierarchy while those of middle and low ranking mares were not consistently found in the middle or bottom of their own hierarchies. Paired feeding tests were carried out on 8 ponies. During tests the time that each pony spent eating and the ponies' aggressive interactions were recorded. Two situations were used. Each pony-pair was tested when both ponies were in the same paddock and also when they were separated by a rail fence. The subordinate ponies spent significantly more time eating and the domonant pony was significantly less aggressive, when the pony-pair was separated by a fence than when they were in one paddock. It was concluded that the dominance hierarchies of adult horse groups changed very little over time and that the foals of dominant mares will tend to be dominant in their own age groups. Management practices can be used to reduce aggression and consequent injury that may arise in group feeding situations. |
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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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Expedition |
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Conference |
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| Notes |
PMID:7189148 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
59 |
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| Author |
Nicol, C.J.; Davidson, H.P.D.; Harris, P.A.; Waters, A.J.; Wilson, A.D. |
| Title |
Study of crib-biting and gastric inflammation and ulceration in young horses |
Type |
Journal Article |
| Year |
2002 |
Publication |
The Veterinary record |
Abbreviated Journal |
Vet. Rec. |
| Volume |
151 |
Issue |
22 |
Pages |
658-662 |
| Keywords |
Animal Husbandry/methods; Animals; Antacids/therapeutic use; *Behavior, Animal; Diet/veterinary; Endoscopy, Gastrointestinal/veterinary; Feces/chemistry; Female; Gastritis/diet therapy/physiopathology/*veterinary; Horse Diseases/diet therapy/*physiopathology/psychology; Horses; Hydrogen-Ion Concentration; Male; Random Allocation; Stereotyped Behavior/*physiology; Stomach Ulcer/diet therapy/physiopathology/*veterinary; Treatment Outcome; Weaning |
| Abstract |
Nineteen young horses that had recently started to perform the stereotypy of crib-biting were compared with 16 non-stereotypic horses for 14 weeks. After initial observations of their behaviour and an endoscopic examination of the condition of their stomachs, the horses were randomly allocated to a control or an antacid diet At the start of the trial, the stomachs of the crib-biting foals were significantly more ulcerated and inflamed than the stomachs of the normal foals. In addition, the faecal pH of the crib-biting foals (6.05) was significantly lower than that of the normal foals (6.58). The antacid diet resulted in a significant improvement in the condition of the horses' stomachs. The crib-biting behaviour declined in most of the foals, regardless of their diet, but tended to decline to a greater extent in the foals on the antacid diet. |
| Address |
Department of Clinical Veterinary Science, University of Bristol, Langford House, Bristol BS40 5DU |
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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 |
0042-4900 |
ISBN |
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Medium |
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Expedition |
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Conference |
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| Notes |
PMID:12498408 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
83 |
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| Author |
Waters, A.J.; Nicol, C.J.; French, N.P. |
| Title |
Factors influencing the development of stereotypic and redirected behaviours in young horses: findings of a four year prospective epidemiological study |
Type |
Journal Article |
| Year |
2002 |
Publication |
Equine veterinary journal |
Abbreviated Journal |
Equine Vet J |
| Volume |
34 |
Issue |
6 |
Pages |
572-579 |
| Keywords |
Age Factors; Animal Husbandry/*methods; Animal Welfare; Animals; *Behavior, Animal; Female; Horse Diseases/epidemiology/prevention & control/*psychology; Horses; Housing, Animal; Longitudinal Studies; Male; Prevalence; Prospective Studies; Risk Factors; *Stereotyped Behavior; Weaning |
| Abstract |
Stereotypies are invariant and repetitive behaviour patterns that seemingly have no function, which tend to develop in captive animals faced with insoluble problems and may be indicative of reduced welfare. A 4 year prospective study of the factors influencing the development of stereotypic and redirected behaviours (abnormal behaviour) in a population of 225 young Thoroughbred and part-Thoroughbred horses was conducted between 1995 and 1999. Abnormal behaviour affected 34.7% of the population. Multivariable analysis showed that foals of low- or middle-ranking mares were less likely to develop abnormal behaviour than foals of dominant mares (rate ratio (RR) 0.23, P<0.01; RR 0.48, P<0.01, respectively). Weaning by confinement in a stable or barn was associated with an increased rate of development of abnormal behaviour, compared with paddock-weaning (RR 2.19, P<0.05), and housing in barns, rather than at grass after weaning, was associated with a further increase (RR 2.54, P<0.01). Specific stereotypic and redirected behaviours were then considered as separate outcomes. Crib-biting was initiated by 10.5% of horses at median age 20 weeks, weaving by 4.6% of horses at median age 60 weeks, box-walking by 2.3% of horses at median age 64 weeks and wood-chewing by 30.3% of horses at median age 30 weeks. Wood-chewing developed at a lower rate in horses born to subordinate or mid-ranking mares than in horses born to dominant mares (RR 0.29, P<0.01; RR 0.41, P<0.01, respectively), and at a higher rate in horses kept in barns or stables rather than at grass after weaning (RR 4.49, P<0.001; RR 1A6, P<0.001, respectively). Feeding concentrates after weaning was associated with a 4-fold increase in the rate of development of crib-biting (RR 4.12, P = 0.02). The results of this study support the idea that simple changes in feeding, housing and weaning practices could substantially lower the incidence of abnormal behaviour in young horses. |
| Address |
University of Bristol, Department of Clinical Veterinary Science, Langford, Bristol, UK |
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Place of Publication |
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| Language |
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 |
0425-1644 |
ISBN |
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Medium |
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Expedition |
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Conference |
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| Notes |
PMID:12357996 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
84 |
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| Author |
McGreevy, P.D.; French, N.P.; Nicol, C.J. |
| Title |
The prevalence of abnormal behaviours in dressage, eventing and endurance horses in relation to stabling |
Type |
Journal Article |
| Year |
1995 |
Publication |
The Veterinary record |
Abbreviated Journal |
Vet. Rec. |
| Volume |
137 |
Issue |
2 |
Pages |
36-37 |
| Keywords |
Animal Husbandry/*methods; Animals; *Behavior, Animal; Horse Diseases/*psychology; Horses; *Physical Conditioning, Animal; Prevalence; Questionnaires; *Stereotyped Behavior |
| Abstract |
The behaviour of horses competing in different disciplines was studied and the relationship between the time they spent out of the stable and the prevalence of abnormal behaviour was examined. The owners of dressage, eventing and endurance horses were sent a questionnaire and a total of 1101 responses were received, giving data on 1750 horses. The behaviours studied were wood-chewing, weaving, crib-biting/wind-sucking and box-walking. The reported percentage prevalences of abnormal behaviour for the dressage, eventing and endurance horses were 32.5, 30.8 and 19.5, respectively. The relationship between the time spent in the stable and the prevalence of abnormal behaviour was examined by chi 2 tests which showed that there were significant linear trends for the eventing group (P < 0.001) and the dressage group (P < 0.05). It is concluded that the time a horse spends out of the stable is related to the discipline for which it is being trained and in dressage and eventing horses the time spent in a stable is correlated with an increased risk of abnormal behaviour. |
| Address |
University of Bristol, Department of Clinical Veterinary Science, Langford |
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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 |
0042-4900 |
ISBN |
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Medium |
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Expedition |
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Conference |
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| Notes |
PMID:8525580 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
89 |
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| Author |
Flack, J.C.; de Waal, F.B.M.; Krakauer, D.C. |
| Title |
Social structure, robustness, and policing cost in a cognitively sophisticated species |
Type |
Journal Article |
| Year |
2005 |
Publication |
The American Naturalist |
Abbreviated Journal |
Am Nat |
| Volume |
165 |
Issue |
5 |
Pages |
E126-139 |
| Keywords |
Animals; *Behavior, Animal; Cognition; Conflict (Psychology); Female; Macaca nemestrina/*physiology; Male; Models, Biological; *Social Behavior |
| Abstract |
Conflict management is one of the primary requirements for social complexity. Of the many forms of conflict management, one of the rarest and most interesting is third-party policing, or intervening impartially to control conflict. Third-party policing should be hard to evolve because policers personally pay a cost for intervening, while the benefits are diffused over the whole group. In this study we investigate the incidence and costs of policing in a primate society. We report quantitative evidence of non-kin policing in the nonhuman primate, the pigtailed macaque. We find that policing is effective at reducing the intensity of or terminating conflict when performed by the most powerful individuals. We define a measure, social power consensus, that predicts effective low-cost interventions by powerful individuals and ineffective, relatively costly interventions by low-power individuals. Finally, we develop a simple probabilistic model to explore whether the degree to which policing can effectively reduce the societal cost of conflict is dependent on variance in the distribution of power. Our data and simple model suggest that third-party policing effectiveness and cost are dependent on power structure and might emerge only in societies with high variance in power. |
| Address |
Santa Fe Institute, Santa Fe, New Mexico 87501, USA. jflack@santafe.edu |
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English |
Summary Language |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
1537-5323 |
ISBN |
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Medium |
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Expedition |
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Conference |
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| Notes |
PMID:15795848 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
168 |
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| Author |
de Waal, F.B.M. |
| Title |
Silent invasion: Imanishi's primatology and cultural bias in science |
Type |
Journal Article |
| Year |
2003 |
Publication |
Animal cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
6 |
Issue |
4 |
Pages |
293-299 |
| Keywords |
Animals; *Behavior, Animal; *Culture; Ecosystem; History, 20th Century; Philosophy; Portraits; *Prejudice; Primates/*psychology; Psychology, Comparative/*history; Research Design/trends |
| Abstract |
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| Address |
Living Links, Yerkes Primate Center, 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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Series Issue |
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Edition |
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| ISSN |
1435-9448 |
ISBN |
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Expedition |
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Conference |
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| Notes |
PMID:14551801 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
178 |
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| Author |
de Waal, F.B. |
| Title |
Cultural primatology comes of age |
Type |
Journal Article |
| Year |
1999 |
Publication |
Nature |
Abbreviated Journal |
Nature |
| Volume |
399 |
Issue |
6737 |
Pages |
635-636 |
| Keywords |
Animals; *Behavior, Animal; *Culture; Humans; Pan troglodytes/*physiology |
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Place of Publication |
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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 |
0028-0836 |
ISBN |
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Medium |
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Expedition |
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Conference |
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| Notes |
PMID:10385107 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
196 |
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| Author |
Aureli, F.; de Waal, F.B. |
| Title |
Inhibition of social behavior in chimpanzees under high-density conditions |
Type |
Journal Article |
| Year |
1997 |
Publication |
American journal of primatology |
Abbreviated Journal |
Am. J. Primatol. |
| Volume |
41 |
Issue |
3 |
Pages |
213-228 |
| Keywords |
Aggression/*psychology; Animals; *Behavior, Animal; *Crowding; Female; Male; Pan troglodytes/*psychology; Population Density; *Social Environment; Stress, Psychological |
| Abstract |
This is the first study to investigate the short-term effects of high population density on captive chimpanzees (Pan troglodytes). Subjects of the study were 45 chimpanzees living in five different groups at the Yerkes Regional Primate Research Center. The groups were observed under two conditions: 1) when they had access to both the indoor and outdoor sections of their enclosures; 2) during cold days when they were locked into the indoor runs, which reduced the available space by more than half. Under the high-density condition, allogrooming and submissive greetings decreased, but juvenile play increased. Remarkably, the rate of various forms of agonistic behavior, such as aggression, bluff charge, bluff display, and hooting, occurred less frequently under the high-density condition. This general decrease in adult social activity, including agonistic behavior, can be interpreted as an inhibition strategy to reduce opportunities for conflict when interindividual distances are reduced. This strategy is probably effective only in the short run, however. Behavioral indicators of anxiety, such as rough scratching and yawning, showed elevated rates, suggesting increased social tension under the high-density condition. |
| Address |
Yerkes Regional Primate Research Center, Emory University, Atlanta, GA 30322, USA |
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English |
Summary Language |
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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:9057966 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
203 |
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| Author |
Noë, R.; de Waal, F.B.; van Hooff, J.A. |
| Title |
Types of dominance in a chimpanzee colony |
Type |
Journal Article |
| Year |
1980 |
Publication |
Folia primatologica; international journal of primatology |
Abbreviated Journal |
Folia Primatol (Basel) |
| Volume |
34 |
Issue |
1-2 |
Pages |
90-110 |
| Keywords |
Agonistic Behavior; Animals; Animals, Zoo; *Behavior, Animal; Competitive Behavior; Factor Analysis, Statistical; Female; Hierarchy, Social; Male; *Pan troglodytes; *Social Dominance |
| Abstract |
This study examines to what extent the concept of dominance can be used to describe the social structure of a group of semi-free-living chimpanzees. 15 behavioural variables, based on agonistic, competitive and affinitive behaviour patterns, have been compared with respect to the interindividual directions in which they occurred. In this analysis use was made of indices that reflect the position an individual occupies in the relationship structure. These indices were calculated per individual for all variables and subjected to factor analysis and cluster analysis. As a result, 13 of the variables could be grouped in three categories which have been labelled: (1) agonistic dominance; (2) bluff dominance, and (3) competitive dominance. Whereas the top positions in the hierarchies based on the first two closely related types of dominance were occupied by the adult males, the hierarchy based on the third type was headed by several adult females. |
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Place of Publication |
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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 |
0015-5713 |
ISBN |
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Medium |
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Expedition |
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Conference |
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| Notes |
PMID:7439873 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
212 |
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| Author |
Zentall, T.R. |
| Title |
Imitation: definitions, evidence, and mechanisms |
Type |
Journal Article |
| Year |
2006 |
Publication |
Animal cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
9 |
Issue |
4 |
Pages |
335-353 |
| Keywords |
Adaptation, Psychological; Animals; *Behavior, Animal; *Imitative Behavior; *Learning; Motivation; *Social Environment; Transfer (Psychology) |
| Abstract |
Imitation can be defined as the copying of behavior. To a biologist, interest in imitation is focused on its adaptive value for the survival of the organism, but to a psychologist, the mechanisms responsible for imitation are the most interesting. For psychologists, the most important cases of imitation are those that involve demonstrated behavior that the imitator cannot see when it performs the behavior (e.g., scratching one's head). Such examples of imitation are sometimes referred to as opaque imitation because they are difficult to account for without positing cognitive mechanisms, such as perspective taking, that most animals have not been acknowledged to have. The present review first identifies various forms of social influence and social learning that do not qualify as opaque imitation, including species-typical mechanisms (e.g., mimicry and contagion), motivational mechanisms (e.g., social facilitation, incentive motivation, transfer of fear), attentional mechanisms (e.g., local enhancement, stimulus enhancement), imprinting, following, observational conditioning, and learning how the environment works (affordance learning). It then presents evidence for different forms of opaque imitation in animals, and identifies characteristics of human imitation that have been proposed to distinguish it from animal imitation. Finally, it examines the role played in opaque imitation by demonstrator reinforcement and observer motivation. Although accounts of imitation have been proposed that vary in their level of analysis from neural to cognitive, at present no theory of imitation appears to be adequate to account for the varied results that have been found. |
| Address |
Department of Psychology, University of Kentucky, Lexington, KY 40506-0044, USA. Zentall@uky.edu |
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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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Expedition |
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Conference |
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| Notes |
PMID:17024510 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
217 |
| Permanent link to this record |
