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	Author	Hogue, M.-E.; Beaugrand, J.P.; Lague, P.C.
	Title	Coherent use of information by hens observing their former dominant defeating or being defeated by a stranger			Type	Journal Article
	Year	1996	Publication	Behavioural Processes	Abbreviated Journal	Behav. Process.
	Volume	38	Issue	3	Pages	241-252
	Keywords	Domestic fowl; Dominance; Hierarchy formation; Observation; Transitive inference
	Abstract	This study examines the role of observation during the formation of triads in female domestic hens. Results indicate that during hierarchy formation, a hen observing agonistic interactions and conflict settlement between its former dominant and a stranger uses this information when in turn confronted by the latter. Under a first condition (E, N = 15 triads), bystanders witnessed their prior dominant being defeated by a stranger before being introduced to them. In a second condition (C1, N = 16 triads), bystanders witnessed the victory of their prior dominant over a stranger. In a third condition (C2, N = 15 triads), bystanders witnessed two strangers establishing a dominance relationship before being introduced to their prior dominant and to a stranger the former had just defeated. The behavioural strategies of bystanders depended on the issue of the conflict they had witnessed. Bystanders of the E condition behaved as having no chance of defeating the stranger. They never initiated an attack against it, and upon being attacked, readily submitted in turn to the stranger. On the contrary, bystanders of the C1 condition behaved as having some chances against the stranger. They initiated attacks in 50% of cases, and won 50% of conflicts against the stranger. Under condition C2, bystanders first initiated contact with the strangers in only 27% of cases, which approximates the average of their chances for defeating the stranger. However, bystanders finally defeated the strangers in 40% of cases. These results suggest that bystanders of conditions E and C1 gained some information on the relationship existing between their prior dominant and the stranger and that they used it coherently, perhaps through transitive inference, thus contributing to the existence of transitive relationships within the triads. Alternate explanations are examined.
	Address
	Corporate Author				Thesis
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	Notes				Approved	no
	Call Number	refbase @ user @			Serial	396
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	Author	Cheney, D.L.; Seyfarth, R.M.
	Title	The representation of social relations by monkeys			Type	Journal Article
	Year	1990	Publication	Cognition	Abbreviated Journal	Cognition
	Volume	37	Issue	1-2	Pages	167-196
	Keywords	Animals; Cercopithecus aethiops/psychology; Concept Formation; Dominance-Subordination; Female; Macaca fascicularis/psychology; Male; Social Behavior; *Social Environment
	Abstract	Monkeys recognize the social relations that exist among others in their group. They know who associates with whom, for example, and other animals' relative dominance ranks. In addition, monkeys appear to compare types of social relations and make same/different judgments about them. In captivity, longtailed macaques (Macaca fascicularis) trained to recognize the relation between one adult female and her offspring can identify the same relation among other mother-offspring pairs, and distinguish this relation from bonds between individuals who are related in a different way. In the wild, if a vervet monkey (Cercopithecus aethiops) has seen a fight between a member of its own family and a member of Family X, this increases the likelihood that it will act aggressively toward another member of Family X. Vervets act as if they recognize some similarity between their own close associates and the close associates of others. To make such comparisons the monkeys must have some way of representing the properties of social relationships. We discuss the adaptive value of such representations, the information they contain, their structure, and their limitations.
	Address	Department of Anthropology, University of Pennsylvania, Philadelphia 19104
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0010-0277	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:2269006			Approved	no
	Call Number	refbase @ user @			Serial	702
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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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	Language	English	Summary Language		Original Title
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	Series Volume		Series Issue		Edition
	ISSN	0015-5713	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:7439873			Approved	no
	Call Number	refbase @ user @			Serial	212
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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
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	German	Summary Language		Original Title	[Zur Phylogenie, Form und Funktion der Dentes canini des Pferdes]
	Series Editor		Series Title		Abbreviated Series Title
	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	Kiley, M.
	Title	The vocalizations of ungulates, their causation and function			Type	Journal Article
	Year	1972	Publication	Zeitschrift für Tierpsychologie	Abbreviated Journal	Z. Tierpsychol.
	Volume	31	Issue	2	Pages	171-222
	Keywords	Aggression; Animals; Artiodactyla; Cattle; Fear; Female; Frustration; Horses; Humans; Male; Pain; Perissodactyla; Sexual Behavior, Animal; Social Behavior; Social Dominance; Swine; *Vocalization, Animal
	Abstract
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	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0044-3573	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:4674022			Approved	no
	Call Number	refbase @ user @			Serial	681
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	Author	Overli, O.; Sorensen, C.; Pulman, K.G.T.; Pottinger, T.G.; Korzan, W.; Summers, C.H.; Nilsson, G.E.
	Title	Evolutionary background for stress-coping styles: relationships between physiological, behavioral, and cognitive traits in non-mammalian vertebrates			Type	Journal Article
	Year	2007	Publication	Neuroscience and Biobehavioral Reviews	Abbreviated Journal	Neurosci Biobehav Rev
	Volume	31	Issue	3	Pages	396-412
	Keywords	Adaptation, Psychological/physiology; Animals; Behavior, Animal/physiology; Biogenic Monoamines/physiology; Brain/physiology; Cognition/physiology; Evolution; Glucocorticoids/physiology; Individuality; Lizards; Oncorhynchus mykiss; Social Dominance; Stress, Psychological/*psychology
	Abstract	Reactions to stress vary between individuals, and physiological and behavioral responses tend to be associated in distinct suites of correlated traits, often termed stress-coping styles. In mammals, individuals exhibiting divergent stress-coping styles also appear to exhibit intrinsic differences in cognitive processing. A connection between physiology, behavior, and cognition was also recently demonstrated in strains of rainbow trout (Oncorhynchus mykiss) selected for consistently high or low cortisol responses to stress. The low-responsive (LR) strain display longer retention of a conditioned response, and tend to show proactive behaviors such as enhanced aggression, social dominance, and rapid resumption of feed intake after stress. Differences in brain monoamine neurochemistry have also been reported in these lines. In comparative studies, experiments with the lizard Anolis carolinensis reveal connections between monoaminergic activity in limbic structures, proactive behavior in novel environments, and the establishment of social status via agonistic behavior. Together these observations suggest that within-species diversity of physiological, behavioral and cognitive correlates of stress responsiveness is maintained by natural selection throughout the vertebrate sub-phylum.
	Address	Department of Animal and Aquacultural Sciences, Norwegian University of Life Sciences, P.O. Box 5003, N-1432 As, Norway. oyvind.overli@umb.no
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0149-7634	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:17182101			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	2801
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	Author	Hemelrijk, C.K.; Wantia, J.
	Title	Individual variation by self-organisation			Type	Journal Article
	Year	2005	Publication	Neuroscience and biobehavioral reviews	Abbreviated Journal	Neurosci Biobehav Rev
	Volume	29	Issue	1	Pages	125-136
	Keywords	Aggression; Animals; Behavior, Animal/physiology; Competitive Behavior/physiology; Female; Humans; Individuality; Male; Models, Psychological; Sex Characteristics; Social Dominance; Time Factors
	Abstract	In this paper, we show that differences in dominance and spatial centrality of individuals in a group may arise through self-organisation. Our instrument is a model, called DomWorld, that represents two traits that are often found in animals, namely grouping and competing. In this model individual differences grow under the following conditions: (1) when the intensity of aggression increases and grouping becomes denser, (2) when the degree of sexual dimorphism in fighting power increases. In this case the differences among females compared to males grow too, (3) when, upon encountering another individual, the tendency to attack is 'obligate' and not conditional, namely 'sensitive to risks'. Results resemble phenomena described for societies of primates, mice, birds and pigs.
	Address	Theoretical Biology, University of Groningen, NN Haren, The Netherlands. hemelrij@ifi.unizh.ch
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0149-7634	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:15652260			Approved	no
	Call Number	refbase @ user @			Serial	443
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	Author	Brennan, J.; Anderson, J.
	Title	*Varying responses to feeding competition in a group of rhesus monkeys (Macaca mulatta)*			Type	Journal Article
	Year	1988	Publication	Primates	Abbreviated Journal	Primates
	Volume	29	Issue	3	Pages	353-360
	Keywords	Macaca mulatta – Dominance – Feeding – Agonistic behaviour – Snakes
	Abstract	The behaviour of members of a group of rhesus monkeys was observed in experimentally created, competitive feeding situations. Socially dominant members of the group tended to start eating before lower-ranking subjects, and generally ate more. Dominants sometimes used aggression to control access to food, but overall, intermediate-ranking monkeys were involved in most agonistic episodes. Non-dominant subjects improved their feeding performance when food was presented in three piles rather than one pile, often by snatching food and consuming it away from the pile. These general patterns were less evident when realistic snake models were placed on some of the food piles. Feeding was disrupted by the presence of snakes, but notably, subordinates risked feeding in these conditions. Piles containing preferred foods and snakes were eaten from, but a low-preference food (carrot) under snakes went untouched by all subjects. The results suggest that group-members evaluate potential risks and benefits of competing for a restricted resource, and that dominance status, while an important factor, is only one element in the equation.
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
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	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	refbase @ user @			Serial	809
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	Author	Sueur, C.; Petit, O.
	Title	Organization of Group Members at Departure Is Driven by Social Structure in Macaca			Type	Journal Article
	Year	2008	Publication	International Journal of Primatology	Abbreviated Journal	Int. J. Primatol.
	Volume	29	Issue	4	Pages	1085-1098
	Keywords	dominance – kinship – Macaca tonkeana – M. mulatta – network metrics – order – movement
	Abstract	Abstract Researchers have often explained order of progression of group members during joint movement in terms of the influence of ecological pressures but rarely that of social constraints. We studied the order of joining by group members to a movement in semifree-ranging macaques with contrasting social systems: 1 group of Tonkean macaques (Macaca tonkeana) and 1 group of rhesus macaques (M. mulatta). We used network metrics to understand roles and associations among individuals. The way the macaques joined a movement reflected the social differences between the species in terms of dominance and kinship. Old and dominant male rhesus macaques were more often at the front of the movement, contrary to the Tonkean macaques, which exhibited no specific order. Moreover, rhesus macaques preferred to join high-ranking or related individuals, whereas Tonkean macaques based associations during joining mostly on sexual relationships with a subgroup of peripheral males.
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
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	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	5125
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	Author	Vallortigara, G.; Rogers, L.J.
	Title	Survival with an asymmetrical brain: advantages and disadvantages of cerebral lateralization			Type	Journal Article
	Year	2005	Publication	The Behavioral and Brain Sciences	Abbreviated Journal	Behav Brain Sci
	Volume	28	Issue	4	Pages	575-89; discussion 589-633
	Keywords	Animals; Attention/physiology; Behavior/physiology; Behavior, Animal/physiology; Dominance, Cerebral/physiology; *Evolution; Humans; Models, Biological; Visual Perception/physiology
	Abstract	Recent evidence in natural and semi-natural settings has revealed a variety of left-right perceptual asymmetries among vertebrates. These include preferential use of the left or right visual hemifield during activities such as searching for food, agonistic responses, or escape from predators in animals as different as fish, amphibians, reptiles, birds, and mammals. There are obvious disadvantages in showing such directional asymmetries because relevant stimuli may be located to the animal's left or right at random; there is no a priori association between the meaning of a stimulus (e.g., its being a predator or a food item) and its being located to the animal's left or right. Moreover, other organisms (e.g., predators) could exploit the predictability of behavior that arises from population-level lateral biases. It might be argued that lateralization of function enhances cognitive capacity and efficiency of the brain, thus counteracting the ecological disadvantages of lateral biases in behavior. However, such an increase in brain efficiency could be obtained by each individual being lateralized without any need to align the direction of the asymmetry in the majority of the individuals of the population. Here we argue that the alignment of the direction of behavioral asymmetries at the population level arises as an “evolutionarily stable strategy” under “social” pressures occurring when individually asymmetrical organisms must coordinate their behavior with the behavior of other asymmetrical organisms of the same or different species.
	Address	Department of Psychology and B.R.A.I.N. Centre for Neuroscience, University of Trieste, 34123 Trieste, Italy. vallorti@univ.trieste.it
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0140-525X	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:16209828			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	4622
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