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| Author | Vollmerhaus, B.; Roos, H.; Gerhards, H.; Knospe, C. | ||||
| Title | [Phylogeny, form and function of canine teeth in the horse] | Type | Journal Article | ||
| Year | 2003 | Publication | Anatomia, histologia, embryologia | Abbreviated Journal | Anat Histol Embryol |
| Volume | 32 | Issue | 4 | Pages | 212-217 |
| Keywords | Animals; Cuspid/*anatomy & histology/radiography; Evolution; Horses/*anatomy & histology; Male; Phylogeny; *Social Dominance | ||||
| Abstract | The canine teeth of the horse developed phylogenically from the simple, pointed, short-rooted tooth form of the leaf eating, in pairs living, Eocene horse Hyracotherium and served up to the Oligocene as a means of defense (self preservation). In the Miocene the living conditions of the Merychippus changed and they took to eating grass and adopted as a new behavior the life in a herd. The canine teeth possibly played an important role in fights for social ranking; they changed from a crown form to knife-like shape. In the Pliohippus the canine tooth usually remained in male horses and since the Pliocene, it contributed to the fights between stallions, to ensure that the offspring only came from the strongest animals (preservation of the species). Form and construction of the canine tooth are described and discussed in detail under the above mentioned phylogenic and ethologic aspects. | ||||
| Address | Institut fur Tieranatomie und Chirurgische Tierklinik der Universitat Munchen, Veterinarstrasse 13, D 80539 Munchen, Deutschland. c-neumueller@anat.vetmed.uni-muenchen.de | ||||
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| Language | German | Summary Language | Original Title  |
[Zur Phylogenie, Form und Funktion der Dentes canini des Pferdes] | |
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| Series Volume | Series Issue | Edition | |||
| ISSN | 0340-2096 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:12919071 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 672 | ||
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| Author | Puppe, B. | ||||
| Title | [Social dominance and rank relationships in domestic pigs: a critical review] | Type | Journal Article | ||
| Year | 1996 | Publication | Berliner und Munchener Tierarztliche Wochenschrift | Abbreviated Journal | Berl Munch Tierarztl Wochenschr |
| Volume | 109 | Issue | 11-12 | Pages | 457-464 |
| Keywords | Animals; Animals, Domestic; Animals, Wild; Female; Male; Models, Psychological; *Social Behavior; *Social Dominance; Swine/*psychology | ||||
| Abstract | Viewing dominance as an attribute of repeated agonistic interactions between two individuals, the present paper reviews theoretical approaches towards concepts of dominance, methods of measurement, and basic principles and problems connected with social dominance in domestic pigs. Domestic pigs are able to establish social organization structures during all stages of their ontogeny. According to definition, dominance relationships occur when a consistent asymmetry of the result of dyadic agonistic interactions can be assessed. This must not necessarily be connected immediately with a better availability of resources, or a high stability of existing dominance relationships, or a functional definition of dominance. When sociometric characteristics are calculated, it seems to be appropriate to use them for different levels of a biological system (individual, individual pair, group). Investigations of social behaviour and dominance in farm animals should take into account that mechanisms of social behaviour in confined environments are often carried out in parts only. Connections of the dominance concept with other concepts of behavioural regulation should be theoretically considered and further investigated by experimental studies. | ||||
| Address | Forschungsbereich Physiologische Grundlagen der Tierhaltung des Forschungsinstituts fur die Biologie landwirtschaftlicher Nutztiere Dummerstorf-Rostock | ||||
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| Language | German | Summary Language | Original Title |
Soziale Dominanz- und Rangbeziehungen beim Hausschwein: eine kritische Ubersicht | |
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| Series Volume | Series Issue | Edition | |||
| ISSN | 0005-9366 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:8999780 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 2861 | ||
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| Author | Cancedda, M. | ||||
| Title | [Social and behavioral organization of horses on the Giara (Sardinia): distribution and aggregation] | Type | Journal Article | ||
| Year | 1990 | Publication | Bollettino della Societa italiana di biologia sperimentale | Abbreviated Journal | Boll Soc Ital Biol Sper |
| Volume | 66 | Issue | 11 | Pages | 1089-1096 |
| Keywords | Animals; *Animals, Wild/physiology/psychology; Environment; Female; *Horses/physiology/psychology; Italy; Male; Population Density; Sexual Behavior, Animal; *Social Behavior; Social Dominance; Water | ||||
| Abstract | In this paper some considerations on the environment of the 42 Kmq of the volcanic-basaltic Giara tableland are discussed. Conditioning by the environment and its effect on the distribution of a population of 712 horses is illustrated in view of their social and behavioural organization. | ||||
| Address | Istituto di Fisiologia Generale e Speciale, Universita di Sassari | ||||
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| Language | Italian | Summary Language | Original Title |
Introduzione all'organizzazione sociale e comportamentale dei cavallini sulla Giara (Sardegna): distribuzione ed aggregazione | |
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| Series Volume | Series Issue | Edition | |||
| ISSN | 0037-8771 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:2095819 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 673 | ||
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| Author | Hodgson, D.; Howe, S.; Jeffcott, L.; Reid, S.; Mellor, D.; Higgins, A. | ||||
| Title | Effect of prolonged use of altrenogest on behaviour in mares | Type | |||
| Year | 2005 | Publication | Veterinary journal (London, England : 1997) | Abbreviated Journal | Vet J |
| Volume | 169 | Issue | 1 | Pages | 113-115 |
| Keywords | Administration, Oral; Anabolic Agents/adverse effects/*pharmacology; Animals; Behavior, Animal/*drug effects; Body Constitution/drug effects; Body Weight/drug effects; *Doping in Sports; Female; Horses/*physiology; Social Behavior; Social Dominance; Time Factors; Trenbolone/adverse effects/*analogs & derivatives/*pharmacology | ||||
| Abstract | Erratum in: Vet J. 2005 May;169(3):321. Corrected and republished in: Vet J. 2005 May;169(3):322-5. Oral administration of altrenogest for oestrus suppression in competition horses is believed to be widespread in some equestrian disciplines, and can be administered continuously for several months during a competition season. To examine whether altrenogest has any anabolic or other potential performance enhancing properties that may give a horse an unfair advantage, we examined the effect of oral altrenogest (0.044 mg/kg), given daily for a period of eight weeks, on social hierarchy, activity budget, body-mass and body condition score of 12 sedentary mares. We concluded that prolonged oral administration of altrenogest at recommended dose rates to sedentary mares resulted in no effect on dominance hierarchies, body mass or condition score. |
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| Address | Faculty of Veterinary Science, University of Sydney, Private Mailbag 4, Narellan Delivery Centre, Narellan, NSW 2567, Australia. davidh@camden.usyd.edu.au | ||||
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| Language | English | Summary Language | Original Title |
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| Series Volume | Series Issue | Edition | |||
| ISSN | 1090-0233 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:15683772 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 671 | ||
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| 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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| Language | English | Summary Language | Original Title |
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| ISSN | 0425-1644 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:7189148 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 59 | ||
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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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| Language | English | Summary Language | Original Title |
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| Series Volume | Series Issue | Edition | |||
| ISSN | 0036-8075 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:10915614 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 187 | ||
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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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| ISSN | 0015-5713 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:7439873 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 212 | ||
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| Author | Krueger, K. | ||||
| Title | Behaviour of horses in the “round pen technique” | Type | Journal Article | ||
| Year | 2007 | Publication | Applied Animal Behaviour Science | Abbreviated Journal | Appl. Anim. Behav. Sci. |
| Volume | 104 | Issue | 1-2 | Pages | 162-170 |
| Keywords | Learning; Dominance relationship; Horse; Human-animal relationships | ||||
| Abstract | I investigated the behavioural background of the way horses learn to follow humans in the “round pen technique” suggested by “horse whisperers” as a gentle method for initial horse training. Though the practicability of this technique has been adequately demonstrated in the past, the horses' behaviour during such training has not yet been documented in detail. In a riding arena, horses, that did not follow the trainer immediately, were chased away so that they galloped around the trainer. Galloping horses showed specific behaviour such as turning the ear to the trainer, chewing, licking, and stretching head and throat downwards. In subsequent trials horses needed to be chased for less time and finally followed immediately, even when conditions were changed or the trainer was replaced by another person. This suggests that horses learn to follow in this particular situation and also show some generalisation. However, following did not occur on a pasture even after several successful trials in the riding arena. | ||||
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| Notes | Approved | no | |||
| Call Number | refbase @ user @ | Serial | 280 | ||
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| Author | Croney, C.C.; Prince-Kelly, N.; Meller, C.L. | ||||
| Title | A note on social dominance and learning ability in the domestic chicken (Gallus gallus) | Type | Journal Article | ||
| Year | 2007 | Publication | Applied Animal Behaviour Science | Abbreviated Journal | Appl. Anim. Behav. Sci. |
| Volume | 105 | Issue | 1-3 | Pages | 254-259 |
| Keywords | Chickens; Learning; Dominance | ||||
| Abstract | Relatively little is known about the relationship between social behavior and specific cognitive abilities of the chicken. It is uncertain whether dominant birds have a cognitive advantage over subordinate birds that might facilitate their superior position in the social hierarchy. Likewise, it is unknown whether subordinate birds compete successfully with higher ranking birds because their cognitive capacities compensate for physical deficits. In this study, the relationship between the chicken's position in the dominance hierarchy and its performance on a cognitive task was explored. Ten pairs of New Hampshire domestic roosters (Gallus gallus) were observed to determine dominance or subordinance within dyads. All birds were then trained and tested on a visual discrimination learning task. Discriminative stimuli were orange and green plastic discs. Correct stimuli (orange or green) were randomly assigned to birds. Placement of the discs (left or right of center) was also randomly assigned and counterbalanced to avoid a side bias. Birds were rewarded with food for pecking at the correct disc. Criterion for task completion was 80% correct responses on three consecutive test sessions or 86% correct on two consecutive sessions. All subjects met the test criterion. The number of trials to criterion was compared between dominant and subordinate birds using a paired t-test. No difference was found in performance between dominant and subordinate birds (p > 0.05) suggesting that in chickens, ability to learn a novel visual discrimination task is not well correlated with rank. Additional studies, particularly using different learning paradigms, are needed to confirm these results. | ||||
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| Call Number | refbase @ user @ | Serial | 284 | ||
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| Author | Heitor, F.; do Mar Oom, M.; Vicente, L. | ||||
| Title | Social relationships in a herd of Sorraia horses Part I. Correlates of social dominance and contexts of aggression | Type | Journal Article | ||
| Year | 2006 | Publication | Behavioural Processes | Abbreviated Journal | Behav. Process. |
| Volume | 73 | Issue | 2 | Pages | 170-177 |
| Keywords | Age Factors; *Aggression; Animals; Female; *Hierarchy, Social; Horses/*psychology; Male; Sex Factors; *Social Dominance; *Social Environment; Statistics, Nonparametric | ||||
| Abstract | Factors related to dominance rank and the functions of aggression were studied in a herd of Sorraia horses, Equus caballus, under extensive management. Subjects were 10 adult mares 5-18 years old and a stallion introduced into the group for breeding. Dominance relationships among mares were clear, irrespective of rank difference, and remained stable after introduction of the stallion. The dominance hierarchy was significantly linear and rank was positively correlated with age and total aggressiveness. Higher-ranking mares received lower frequency and intensity of agonistic interactions. Nevertheless, higher-ranking dominants were not more likely to elicit submission from their subordinates than lower-ranking dominants. Neither close-ranking mares nor mares with less clear dominance relationships were more aggressive towards each other. Agonistic interactions seemed to be used more importantly in regulation of space than to obtain access to food or to reassert dominance relationships. Contexts of aggression were related to mare rank. The results suggest that dominance relationships based on age as a conventional criterion were established to reduce aggressiveness in a herd where the costs of aggression are likely to outweigh the benefits. | ||||
| Address | Centro de Biologia Ambiental, Faculdade de Ciencias da Universidade de Lisboa, Campo Grande, Edificio C2, 1749-016 Lisboa, Portugal | ||||
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| Language | English | Summary Language | Original Title |
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| ISSN | 0376-6357 | ISBN | Medium | ||
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| Notes | PMID:16815645 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 292 | ||
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