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	Author	Judge, P.G.; Mullen, S.H.
	Title	Quadratic postconflict affiliation among bystanders in a hamadryas baboon group			Type	Journal Article
	Year	2005	Publication	Animal Behaviour.	Abbreviated Journal	Anim. Behav.
	Volume	69	Issue	6	Pages	1345-1355
	Keywords
	Abstract	The tendency in primate groups for two opponents to affiliate shortly after a fight has been described as dyadic reconciliation. The response has been shown to restore disrupted relationships and curtail ongoing aggression. Rates of self-directed behaviour (e.g. scratching) are positively correlated with anxiety in primates and the rates decline after reconciliation, indicating that the response also functions to reduce postconflict tension. Third parties not involved in an aggressive interaction are also likely to affiliate with one of the combatants subsequent to a fight. Such `triadic' interactions may also promote conflict resolution when, for instance, the relatives of a victim affiliate with their relative's aggressor. Because aggression in a group influences a bystander's behaviour with combatants, we hypothesized that aggression between two animals would also influence a bystander's behaviour with other bystanders. Such `quadratic' postconflict interactions might also function to reduce postconflict tension or occur in patterns among kin subgroups to resolve conflict. We tested for quadratic interactions in an 18-member group of captive hamadryas baboons, Papio hamadryas hamadryas. Immediately following a fight, an uninvolved bystander was randomly selected for observation and its affiliative interactions with other bystanders and its displacement activities were recorded for 3 min. Rates of behaviour during these postconflict periods were compared to rates during 3-min baseline periods not preceded by aggression. Bystanders engaged in quadratic interactions by increasing affiliation with other bystanders following aggression. Bystanders directed affiliation to nonkin bystanders that were their preferred social partners. Displacement activities of bystanders were significantly higher during postconflict intervals compared to baseline intervals, and bystander displacement activity levels before affiliative contact with other bystanders were significantly higher than after contact. Apparently, bystanders become tense or anxious after witnessing aggression and affiliate with preferred partners to reduce the arousal.
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	Notes				Approved	no
	Call Number	refbase @ user @			Serial	402
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	Author	Poisbleau, M.; Fritz, H.; Valeix, M.; Perroi, P.-Y.; Dalloyau, S.; Lambrechts, M.M.
	Title	Social dominance correlates and family status in wintering dark-bellied brent geese, Branta bernicla bernicla			Type	Journal Article
	Year	2006	Publication	Animal Behaviour.	Abbreviated Journal	Anim. Behav.
	Volume	71	Issue	6	Pages	1351-1358
	Keywords
	Abstract	In many gregarious species, including ducks and geese, being dominant provides more benefits than costs, because dominants have better access to resources essential for survival or reproduction. In geese, being in better body condition during migration towards the breeding grounds positively influences reproductive success. However, underlying proximate mechanisms linking prebreeding body condition on the wintering grounds to breeding success remain poorly understood. We investigated social dominance correlates and family status, in three consecutive winters, in a free-ranging, migrating, dark-bellied brent goose population. Families with juveniles dominated pairs, and pairs dominated singletons. Dominance rank did not increase with the number of juveniles per family. Males were dominant over females. Social dominance and reproductive status for a given winter were significantly correlated with body mass, body size and body condition during the previous winter, suggesting that body condition in winter also affects subsequent breeding success and hence also dominance. Levels of testosterone and triiodothyronine were not correlated with immediate or later dominance or reproductive status. We discuss the role of family status as a signal of social status in determining reproductive strategies.
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	ISSN	0003-3472	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	4690
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	Author	McGreevy, P.D.
	Title	Development and Resolution of Behavioural Problems with the			Type	Conference Article
	Year		Publication	Havemeier Workshop	Abbreviated Journal
	Volume		Issue		Pages
	Keywords
	Abstract	The ideals of equestrian technique combine art and science. Therefore students of equitation encounter measurable variables such as rhythm, tempo and impulsion alongside more ethereal ones such as outline and harmony. This mixture accounts for many of the idiosyncrasies of equestrianism including the subjective scoring of performance in dressage tests, the elusiveness of perfection even at an elite level of competition and the difficulty of expressing equestrian technique in empirical terms (Roberts, 1992). This chapter will describe and offer examples of the unwelcome behavioural responses horses produce under saddle. Two broad sections are then proposed to allow the reader to consider unwelcome behavioural responses caused directly by humans as distinct from those attributable more to the horse than the rider. Ultimately the responsibility for problems in the ridden horse lies with humans since we have undertaken the domestication and exploitation of equids. Therefore it is accepted that the dichotomy is not absolute. The chapter closes with a
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	Notes				Approved	no
	Call Number	refbase @ user @			Serial	471
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	Author	Crowley, P.H.; Provencher, L.; Sloane, S.; Dugatkin, L.A.; Spohn, B.; Rogers, L.; Alfieri, M.
	Title	Evolving cooperation: the role of individual recognition			Type	Journal Article
	Year	1996	Publication	Biosystems	Abbreviated Journal	Biosystems
	Volume	37	Issue	1-2	Pages	49-66
	Keywords	Game theory; Genetic algorithms; Individual recognition; Iterated Prisoner's Dilemma; Reciprocal altruism
	Abstract	To evaluate the role of individual recognition in the evolution of cooperation, we formulated and analyzed a genetic algorithm model (EvCo) for playing the Iterated Prisoner's Dilemma (IPD) game. Strategies compete against each other during each generation, and successful strategies contribute more of their attributes to the next generation. Each strategy is encoded on a `chromosome' that plays the IPD, responding to the sequences of most recent responses by the interacting individuals (chromosomes). The analysis reported in this paper considered different memory capabilities (one to five previous interactions), pairing continuities (pairs of individuals remain together for about one, two, five, or 1000 consecutive interactions), and types of individual recognition (recognition capability was maximal, nil, or allowed to evolve between these limits). Analysis of the results focused on the frequency of mutual cooperation in pairwise interactions (a good indicator of overall success in the IPD) and on the extent to which previous responses by the focal individual and its partner were associated with the partner's identity (individual recognition). Results indicated that a fixed, substantial amount of individual recognition could maintain high levels of mutual cooperation even at low pairing continuities, and a significant but limited capability for individual recognition evolved under selection. Recognition generally increased mutual cooperation more when the recent responses of individuals other than the current partner were ignored. Titrating recognition memory under selection using a fitness cost suggested that memory of the partner's previous responses was more valuable than memory of the focal's previous responses. The dynamics produced to date by EvCo are a step toward understanding the evolution of social networks, for which additional benefits associated with group interactions must be incorporated.
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	Notes				Approved	no
	Call Number	refbase @ user @			Serial	483
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	Author	McLeod, P.G.; Huntingford, F.A.
	Title	Social rank and predator inspection in sticklebacks			Type	Journal Article
	Year	1994	Publication	Animal Behaviour.	Abbreviated Journal	Anim. Behav.
	Volume	47	Issue	5	Pages	1238-1240
	Keywords
	Abstract
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	Notes				Approved	no
	Call Number	refbase @ user @			Serial	525
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	Author	James, R.; Bennett, P.G.; Krause, J.
	Title	Geometry for mutualistic and selfish herds: the limited domain of danger			Type	Journal Article
	Year	2004	Publication	Journal of Theoretical Biology	Abbreviated Journal	J. Theor. Biol.
	Volume	228	Issue	1	Pages	107-113
	Keywords	Aggregation; Selfish herd; Limited domains
	Abstract	We present a two-dimensional individual-based model of aggregation behaviour in animals by introducing the concept of a “limited domain of danger”, which represents either a limited detection range or a limited attack range of predators. The limited domain of danger provides a suitable framework for the analysis of individual movement rules under real-life conditions because it takes into account the predator's prey detection and capture abilities. For the first time, a single geometrical construct can be used to analyse the predation risk of both peripheral and central individuals in a group. Furthermore, our model provides a conceptual framework that can be equally applied to aggregation behaviour and refuge use and thus presents a conceptual advance on current theory that treats these antipredator behaviours separately. An analysis of individual movement rules using limited domains of danger showed that the time minimization strategy outcompetes the nearest neighbour strategy proposed by Hamilton's (J. Theor. Biol. 31 (1971) 295) selfish herd model, whereas a random strategy confers no benefit and can even be disadvantageous. The superior performance of the time minimization strategy highlights the importance of taking biological constraints, such as an animal's orientation relative to its neighbours, into account when searching for efficient movement rules underlying the aggregation process.
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	Notes				Approved	no
	Call Number	refbase @ user @			Serial	552
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	Author	Clarke, J.V.; Nicol, C.J.; Jones, R.; McGreevy, P.D.
	Title	Effects of observational learning on food selection in horses			Type	Journal Article
	Year	1996	Publication	Applied Animal Behaviour Science	Abbreviated Journal	Appl. Anim. Behav. Sci.
	Volume	50	Issue	2	Pages	177-184
	Keywords	Horse; Observational learning; Food discrimination
	Abstract	Fourteen riding horses of mixed age and breed were randomly allocated to observer and control treatments. An additional horse was pre-trained as a demonstrator to walk the 13.8 m length of the test arena and select one of two food buckets using colour and pattern cues. Observer horses were exposed to correct performances of the task by the trained demonstrator, for 20 trials held over 2 days. Control horses were subjected to the same handling and placement procedures as the observer horses but without exposure to the behaviour of the demonstrator. The third day for all subjects was designated as a test day. Each subject was released individually in a predetermined place in the arena, and the latency to walk the length of the test arena to the food buckets, the latency to feed, the identity of the bucket approached and the identity of the bucket selected were recorded on ten consecutive trials. During tests both food buckets contained food to minimize the possibility of individual trial and error learning. On the first trial the mean latency to approach the goal area was 18 s for observer horses, compared with 119 s for control horses (t = 2.8, d.f. = 12, P < 0.01) and the mean latency to eat was 35 s for observer horses, compared with 181 s for control horses (t = 4.86, d.f. = 11, P < 0.001). However, observer horses were no more likely to choose the demonstrated bucket than control horses on the first trial. Twelve of the 14 horses decreased their latency to approach the goal area during the series of ten trials, but there were no significant changes in the buckets selected.
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	Notes				Approved	no
	Call Number	refbase @ user @			Serial	563
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	Author	Pongrácz, P.; Miklósi, Á.; Kubinyi, E.; Topál, J.; Csányi, V.
	Title	Interaction between individual experience and social learning in dogs			Type	Journal Article
	Year	2003	Publication	Animal Behaviour.	Abbreviated Journal	Anim. Behav.
	Volume	65	Issue	3	Pages	595-603
	Keywords
	Abstract	We investigated the interaction between individual experience and social learning in domestic dogs,Canis familiaris . We conducted two experiments using detour tests, where an object or food was placed behind a transparent, V-shaped wire-mesh fence, such that the dogs could get the reward by going around the fence. In some groups, two open doors were offered as an alternative, easier way to reach the reward. In experiment 1 we opened the doors only in trial 1, then closed them for trials 2 and 3. In experiment 2 other dogs were first taught to detour the fence with closed doors after they had observed a detouring human demonstrator, then we opened the doors for three subsequent trials. In experiment 1 all dogs reached the reward by going through the doors in trial 1, but their detouring performance was poor after the doors had been closed, if they had to solve the task on their own. However, dogs in the experimental group that were allowed to watch a detouring human demonstrator after the doors had been closed showed improved detouring ability compared with those that did not receive a demonstration of detouring. In experiment 2 the dogs tended to keep on detouring along the fence even if the doors had been opened, giving up a chance to get behind the fence by a shorter route. These results show that dogs can use information gained by observing a human demonstrator to overcome their own mistakenly preferred solution in a problem situation. In a reversed situation social learning can also contribute to a preference for a less adaptive behaviour. However, only repeated individual and social experience leads to a durable manifestation of maladaptive behaviour. Copyright 2003 Published by Elsevier Science Ltd on behalf of The Association for the Study of Animal Behaviour.
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	Notes				Approved	no
	Call Number	refbase @ user @			Serial	565
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	Author	Miklosi, A.; Pongracz, P.; Lakatos, G.; Topal, J.; Csanyi, V.
	Title	*A Comparative Study of the Use of Visual Communicative Signals in Interactions Between Dogs (Canis familiaris) and Humans and Cats (Felis catus) and Humans*			Type	Journal Article
	Year	2005	Publication	Journal of Comparative Psychology	Abbreviated Journal	J. Comp. Psychol.
	Volume	119	Issue	2	Pages	179-186
	Keywords
	Abstract	Dogs' (Canis familiaris) and cats' (Felis catus) interspecific communicative behavior toward humans was investigated. In Experiment 1, the ability of dogs and cats to use human pointing gestures in an object-choice task was compared using 4 types of pointing cues differing in distance between the signaled object and the end of the fingertip and in visibility duration of the given signal. Using these gestures, both dogs and cats were able to find the hidden food; there was no significant difference in their performance. In Experiment 2, the hidden food was made inaccessible to the subjects to determine whether they could indicate the place of the hidden food to a naive owner. Cats lacked some components of attention-getting behavior compared with dogs. The results suggest that individual familiarization with pointing gestures ensures high-level performance in the presence of such gestures; however, species-specific differences could cause differences in signaling toward the human.
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	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
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	Notes				Approved	no
	Call Number	refbase @ user @			Serial	599
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	Author	Leblanc, M.-A.; Duncan, P.
	Title	Can studies of cognitive abilities and of life in the wild really help us to understand equine learning?			Type	Journal Article
	Year	2007	Publication	Behavioural Processes	Abbreviated Journal	Behav. Process.
	Volume	76	Issue		Pages	49-52
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	Abstract
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	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	refbase @ user @			Serial	621
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