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	Author	Weeks, J.W.; Crowell-Davis, S.L.; Caudle, A.B.; Heusner, G.L.
	Title	*Aggression and social spacing in light horse (Equus caballus) mares and foals*			Type	Journal Article
	Year	2000	Publication	Applied Animal Behaviour Science	Abbreviated Journal	Appl. Anim. Behav. Sci.
	Volume	68	Issue	4	Pages	319-337
	Keywords	Dominance relationships; Horse; Sex differences; Social ontogeny; aggregation; parent-offspring interaction; social behavior
	Abstract	Aggression and social spacing were studied in 14 light horse mares and their foals living at pasture. Focal samples were collected on each mare-foal dyad for 6 to 10.5 h from 2 months of foal age until weaning at approximately 4 months of age. Observations on foals continued until approximately 6 months of age for 7.5 to 10.5 h per foal. Every 2 min the identities of all individuals within 5 m were recorded. All occurrences of agonistic behavior, and the participants, were recorded during the focal samples. In addition, during feeding of supplemental grain, all occurrences of agonistic behavior by all subjects were recorded. Significant correlations were found between mare rank and the rank of foals both prior to and after weaning. Before weaning, the rank of the foal was significantly correlated with birth order. No significant correlation between birth order and foal rank was found for the post-weaning hierarchy. An animal's gender had no significant effect on foal rank or the choice of preferred associate. Both prior to and after weaning, foals associated preferentially with the foal of their dam's most preferred associate. In addition, significant positive correlations were found between rank of mares and foals and the rate at which they directed aggression to other herd members. (C) 2000 Elsevier Science B.V.
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	Notes	Cited By (since 1996): 7; Export Date: 21 April 2007; Source: Scopus			Approved	no
	Call Number	refbase @ user @			Serial	788
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	Author	Kimura, R.
	Title	Mutual grooming and preferred associate relationships in a band of free-ranging horses			Type	Journal Article
	Year	1998	Publication	Applied Animal Behaviour Science	Abbreviated Journal	Appl. Anim. Behav. Sci.
	Volume	59	Issue	4	Pages	265-276
	Keywords	Horses; Grooming; Dominance entropy
	Abstract	Preferred associate (nearest neighbour) and mutual grooming relationships among mares, in an isolated family band of free-ranging horses (Equus caballus), were studied, and the structural and functional differences between these two relationships were examined. The frequent partners accompanying the mare were not the same in both these relationships (p<0.05) and mares changed their partners during the study period between 1988-1990. Individual horses of similar rank tended to remain closer together in both winter and summer. Aggressive-submissive behaviour was so infrequent during spring that rank determinations could not be made; however, in fall, although rank could be determined, rank was not correlated with nearest neighbour. Three subgroups, based on preferred associate relationships in summer, fall and winter, directly reflected the age and social rank of the mares in the group. Individual horses of higher rank tended to have many partners in winter, while individuals of lower rank had fewer. There was no significant correlation between the frequency of mutual grooming and individual rank. The mutual grooming relationship was strongly influenced by seasonal changes as the relative amount of grazing time per day increased. Thus, the frequency of mutual grooming was lowest in winter and highest in summer. The mutual grooming relationship was based on the bonds between individual horses, which were little influenced by social rank. Lower ranking individuals tended to have a greater variety of grooming partners in summer.
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	Notes				Approved	no
	Call Number				Serial	2022
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	Author	Chiesa, A.D.; Pecchia, T.; Tommasi, L.; Vallortigara, G.
	Title	Multiple landmarks, the encoding of environmental geometry and the spatial logics of a dual brain			Type	Journal Article
	Year	2006	Publication	Animal Cognition	Abbreviated Journal	Anim. Cogn.
	Volume	9	Issue	4	Pages	281-293
	Keywords	Animals; Association Learning/physiology; Chickens; Cues; Dominance, Cerebral/physiology; Environment; Exploratory Behavior/physiology; Logic; Space Perception/physiology; Spatial Behavior/physiology
	Abstract	A series of place learning experiments was carried out in young chicks (Gallus gallus) in order to investigate how the geometry of a landmark array and that of a walled enclosure compete when disoriented animals could rely on both of them to re-orient towards the centre of the enclosure. A square-shaped array (four wooden sticks) was placed in the middle of a square-shaped enclosure, the two structures being concentric. Chicks were trained to ground-scratch to search for food hidden in the centre of the enclosure (and the array). To check for effects of array degradation, one, two, three or all landmarks were removed during test trials. Chicks concentrated their searching activity in the central area of the enclosure, but their accuracy was inversely contingent on the number of landmarks removed; moreover, the landmarks still present within the enclosure appeared to influence the shape of the searching patterns. The reduction in the number of landmarks affected the searching strategy of chicks, suggesting that they had focussed mainly on local cues when landmarks were present within the enclosure. When all the landmarks were removed, chicks searched over a larger area, suggesting an absolute encoding of distances from the local cues and less reliance on the relationships provided by the geometry of the enclosure. Under conditions of monocular vision, chicks tended to rely on different strategies to localize the centre on the basis of the eye (and thus the hemisphere) in use, the left hemisphere attending to details of the environment and the right hemisphere attending to the global shape.
	Address	Department of Psychology and B.R.A.I.N. Centre for Neuroscience, University of Trieste, via S. Anastasio 12, 34100, Trieste, Italy
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	Language	English	Summary Language		Original Title
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	Series Volume		Series Issue		Edition
	ISSN	1435-9448	ISBN		Medium
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	Notes	PMID:16941155			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	2443
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	Author	Cooper, M.A.; Bernstein, I.S.
	Title	Counter aggression and reconciliation in Assamese macaques (Macaca assamensis)			Type	Journal Article
	Year	2002	Publication	American journal of primatology	Abbreviated Journal	Am. J. Primatol.
	Volume	56	Issue	4	Pages	215-230
	Keywords	Aggression; Animals; Female; Macaca; Male; Phylogeny; Sex Factors; *Social Behavior; Social Dominance
	Abstract	Patterns of aggressive and affiliative behavior, such as counter aggression and reconciliation, are said to covary in the genus Macaca; this is referred to as the systematic variation hypothesis. These behavior patterns constitute a species dominance style. Van Schaik's [1989] socioecological model explains dominance style in macaques in terms of within- and between-group contest competition. Dominance style is also said to correlate with phylogeny in macaques. The present study was undertaken to examine phylogenetic and socioecological explanations of dominance style, as well as the systematic variation hypothesis. We collected data on counter aggression and reconciliation from a habituated group of Assamese macaques (Macaca assamensis) at the Tukeswari Temple in Assam, India. The proportion of agonistic episodes that involved counter aggression was relatively low. Counter aggression, however, occurred more often among males than among females, and it was most common when females initiated aggression against males. The conciliatory tendency for this group of Assamese macaques was 11.2%. The frequency of reconciliation was low for fights among males and for fights among females, but reconciliation was particularly rare for opposite-sexed opponents. Female social relationships were consistent with the systematic variation hypothesis, and suggest a despotic dominance style. A despotic dominance style in Assamese macaques weakens the correlation between dominance style and phylogeny in macaques, but it is not inconsistent with the socioecological model. Male-female relationships were not well explained by the despotic-egalitarian framework, and males may well have more tolerant social relationships than do females. Sex differences need to be considered when categorizing species according to dominance style.
	Address	Department of Psychology, University of Georgia, Athens, Georgia, USA. biomcc@langate.gsu.edu
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	Language	English	Summary Language		Original Title
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	Series Volume		Series Issue		Edition
	ISSN	0275-2565	ISBN		Medium
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	Notes	PMID:11948638			Approved	no
	Call Number	refbase @ user @			Serial	2877
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	Author	Feist, J.D.; McCullough, D.R.
	Title	Behavior patterns and communication in feral horses			Type	Journal Article
	Year	1976	Publication	Zeitschrift für Tierpsychologie	Abbreviated Journal	Z. Tierpsychol.
	Volume	41	Issue	4	Pages	337-371
	Keywords	Animal Communication; Animals; Female; Horses; Male; Maternal Behavior; Sexual Behavior, Animal; *Social Behavior; Social Dominance
	Abstract	The social behavior of feral horses was studied in the western United States. Stable harem groups with a dominant stallion and bachelor hermaphrodite hermaphrodite groups occupied overlapping home ranges. Groups spacing, but not territoriality, was expressed. Harem group, stability resulted from strong dominance by dominant stallions, and fidelity of group members. Eliminations of group members were usually marked by urine of the dominant stallion. Hermaphrodite-hermaphrodite aggression involved spacing between harems and dominance in bachelor groups. Marking with feces was important in hermaphrodite-hermaphrodite interactions. Foaling occurred in May and early June, following the post-partum estrous. All breeding was done by harem stallions. Young were commonly nursed through yearling age. These horses showed social organizations similar to other feral horses and plains zebras.
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	Language	English	Summary Language		Original Title
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	ISSN	0044-3573	ISBN		Medium
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	Notes	PMID:983427			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	3995
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	Author	Ikeda, M.; Patterson, K.; Graham, K.S.; Ralph, M.A.L.; Hodges, J.R.
	Title	A horse of a different colour: do patients with semantic dementia recognise different versions of the same object as the same?			Type	Journal Article
	Year	2006	Publication	Neuropsychologia	Abbreviated Journal	Neuropsychologia
	Volume	44	Issue	4	Pages	566-575
	Keywords	Adult; Aged; Anomia/diagnosis/psychology; Atrophy; Attention; Color Perception; Dementia/diagnosis/psychology; Discrimination Learning; Dominance, Cerebral; Female; Humans; Male; Memory, Short-Term; Middle Aged; Neuropsychological Tests; Orientation; *Pattern Recognition, Visual; Reference Values; Retention (Psychology); Semantics; Size Perception; Temporal Lobe/pathology
	Abstract	Ten patients with semantic dementia resulting from bilateral anterior temporal lobe atrophy, and 10 matched controls, were tested on an object recognition task in which they were invited to choose (from a four-item array) the picture representing “the same thing” as an object picture that they had just inspected and attempted to name. The target in the response array was never physically identical to the studied picture but differed from it – in the various conditions – in size, angle of view, colour or exemplar (e.g. a different breed of dog). In one test block for each patient, the response array was presented immediately after the studied picture was removed; in another block, a 2 min filled delay was inserted between study and test. The patients performed relatively well when the studied object and target response differed only in the size of the picture on the page, but were significantly impaired as a group in the other three type-of-change conditions, even with no delay between study and test. The five patients whose structural brain imaging revealed major right-temporal atrophy were more impaired overall, and also more affected by the 2 min delay, than the five patients with an asymmetric pattern characterised by predominant left-sided atrophy. These results are interpreted in terms of a hypothesis that successful classification of an object token as an object type is not a pre-semantic ability but rather results from interaction of perceptual and conceptual processing.
	Address	Department of Neuropsychiatry, Ehime University School of Medicine, Shitsukawa, Toon City, Ehime 791-0295, Japan. mikeda@m.ehime-u.ac.jp
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	Language	English	Summary Language		Original Title
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	ISSN	0028-3932	ISBN		Medium
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	Notes	PMID:16115656			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	4059
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	Author	Overli, O.; Korzan, W.J.; Hoglund, E.; Winberg, S.; Bollig, H.; Watt, M.; Forster, G.L.; Barton, B.A.; OVerli, E.; Renner, K.J.; Summers, C.H.
	Title	Stress coping style predicts aggression and social dominance in rainbow trout			Type	Journal Article
	Year	2004	Publication	Hormones and Behavior	Abbreviated Journal	Horm Behav
	Volume	45	Issue	4	Pages	235-241
	Keywords	Adaptation, Psychological/physiology; Aggression/physiology; Animals; Dominance-Subordination; Female; Hierarchy, Social; Hydrocortisone/blood; Individuality; Male; Matched-Pair Analysis; Oncorhynchus mykiss/physiology; Stress/*physiopathology
	Abstract	Social stress is frequently used as a model for studying the neuroendocrine mechanisms underlying stress-induced behavioral inhibition, depression, and fear conditioning. It has previously been shown that social subordination may result in increased glucocorticoid release and changes in brain signaling systems. However, it is still an open question which neuroendocrine and behavioral differences are causes, and which are consequences of social status. Using juvenile rainbow trout of similar size and with no apparent differences in social history, we demonstrate that the ability to win fights for social dominance can be predicted from the duration of a behavioral response to stress, in this case appetite inhibition after transfer to a new environment. Moreover, stress responsiveness in terms of confinement-induced changes in plasma cortisol was negatively correlated to aggressive behavior. Fish that exhibited lower cortisol responses to a standardized confinement test were markedly more aggressive when being placed in a dominant social position later in the study. These findings support the view that distinct behavioral-physiological stress coping styles are present in teleost fish, and these coping characteristics influence both social rank and levels of aggression.
	Address	Biology Department and Neuroscience Group, University of South Dakota, Vermillion, SD 57069, USA. oyvind.overli@bio.uio.no
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	Language	English	Summary Language		Original Title
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	ISSN	0018-506X	ISBN		Medium
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	Notes	PMID:15053939			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	4192
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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
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	Series Volume		Series Issue		Edition
	ISSN	0140-525X	ISBN		Medium
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	Notes	PMID:16209828			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	4622
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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.
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	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	5125
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	Author	Seyfarth, R.M.
	Title	A model of social grooming among adult female monkeys			Type	Journal Article
	Year	1977	Publication	Journal of Theoretical Biology	Abbreviated Journal	J. Theor. Biol.
	Volume	65	Issue	4	Pages	671-698
	Keywords	Animals; Behavior, Animal; Female; Grooming; Haplorhini/physiology; *Models, Biological; Reproduction; Social Dominance; Time Factors
	Abstract	Grooming networks among adult female monkeys exhibit two similar features across a number of different species. High-ranking animals receive more grooming than others, and the majority of grooming occurs between females of adjacent rank. A theoretical model which duplicates these features is presented, and the properties of the model are used to explain the possible causation and function of female grooming behaviour. The model illustrates how relatively simple principles governing the behaviour of individuals may be used to explain more complex aspects of the social structure of non-human primate groups.
	Address
	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	0022-5193	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:406485			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	5259
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