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| Author |
Bourjade, M.; Moulinot, M.; Henry, S.; Richard-Yris, M.-A. Hausberger.M |
| Title |
Could Adults be Used to Improve Social Skills of Young Horses, Equus caballus? |
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Journal Article |
| Year |
2008 |
Publication |
Ethology |
Abbreviated Journal |
Ethology |
| Volume |
50 |
Issue |
4 |
Pages  |
408-417 |
| Keywords |
horse • social influence • young-adult interaction • social development |
| Abstract |
We investigated the effects of the introduction of foreign adults on the behavior of young horses. First, we observed the behavior of 1- and 2-year-old domestic horses housed in same-age and same-sex groups (a standard housing system, but different from a natural situation). Then, two same-sex adults were introduced into each experimental group. Observations made before, during and after an introduction indicated that young horses reared in homogeneous groups of young had different behaviors compared to other domestic horses reared under more socially natural conditions. After the introduction of adults, young horses expressed new behaviors, preferential social associations emerged, positive social behavior increased and agonistic interactions decreased. These results have important implications both for understanding the influence that adults may have on the behavior of young horses, and in terms of husbandry, indicating the importance of keeping young horses with adults, although further studies are still necessary. © 2008 Wiley Periodicals, Inc. Dev Psychobiol 50: 408-417, 2008. |
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Equine Behaviour @ team @ |
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4800 |
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Harcourt, J.L.; Biau, S.; Johnstone, R.; Manica, A. |
| Title |
Boldness and Information Use in Three-Spined Sticklebacks |
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Journal Article |
| Year |
2010 |
Publication |
Ethology |
Abbreviated Journal |
Ethology |
| Volume |
116 |
Issue |
5 |
Pages |
440-447 |
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Abstract In foraging groups, individuals may utilise information from their social environment to aid decision making when choosing where to search for food. Little work has looked at the costs or benefits of behavioural differences, such as consistent individual variation in boldness, with respect to learning ability. Here, we investigate the response of three-spined stickleback (Gasterosteus aculeatus) to ‘social cues’, ‘local enhancement’ and ‘public information’ during foraging tasks. Our results confirm previous work suggesting that this species responds to social cues and local enhancement but not public information. Variation in boldness did not affect the use of different types of information. However, time taken to make a choice and reach a patch varied between fish with different levels of boldness. Contrary to expectation, shy fish were the more variable individuals, having a greater range of reaction times when responding to the tasks. This suggests that individual behavioural differences still play a role when utilising information obtained from the environment and may influence the relative benefits that could result in different contexts. |
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Blackwell Publishing Ltd |
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1439-0310 |
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Equine Behaviour @ team @ |
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5198 |
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Podos, J. |
| Title |
Early perspectives on the evolution of behavior: Charles Otis Whitman and Oskar Heinroth |
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Journal Article |
| Year |
1964 |
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Ethology Ecology & Evolution (EEE) |
Abbreviated Journal |
Ethol Ecol Evol |
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6 |
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4 |
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467-480 |
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Equine Behaviour @ team @ |
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2293 |
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Rubenstein D. I., |
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Reproductive value and behavioral strategies: coming of age in monkeys and horses |
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Journal Article |
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1982 |
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Perspectives in Ethology |
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Perspect Ethol |
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5 |
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469-487 |
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from Professor Hans Klingels Equine Reference List |
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1525 |
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McPhee, M.E.; Segal, A.; Johnston, R.E. |
| Title |
Hamsters Use Predator Odors as Indirect Cues of Predation Risk |
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Journal Article |
| Year |
2010 |
Publication |
Ethology |
Abbreviated Journal |
Ethology |
| Volume |
116 |
Issue |
6 |
Pages |
517-523 |
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Abstract Golden hamsters (Mesocricetus auratus) use olfactory cues to assess traits of conspecifics such as kinship, individual identity, and reproductive status. The environment, however, is full of a wide variety of other olfactory information such as signals emitted by some of the hamster’s primary predators. Given this, we hypothesized that hamsters use odors from predators as an indirect sign of increased predation risk in the environment. In addition, based on data that show that wild hamsters are diurnal while laboratory hamsters are nocturnal, we hypothesized that if golden hamsters did respond to the predator odors, perceived predator risk might influence daily activity patterns in hamsters. We tested male and female hamsters over 5 d with scent gland secretion from domestic ferrets (Mustela putorius furo) and compared their behavior to that observed when they were exposed to a clean arena. In response to the predator odor, subjects significantly decreased the amount of time active outside of their burrow, returned to their burrow more quickly, and spent less time near the predator odor than the clean control stimulus. These results strongly support our hypothesis that hamsters, like other species of small mammals, avoid predator odors. The results did not, however, support our second hypothesis that exposure to predator odors during the dark phase of the light cycle would elicit a switch to a more diurnal pattern of activity. More work is needed to understand how environmental cues and internal mechanisms interact to shape activity patterns. |
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Blackwell Publishing Ltd |
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1439-0310 |
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no |
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Equine Behaviour @ team @ |
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5212 |
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| Author |
Fedurek, P.; Dunbar, R. I. M. |
| Title |
What Does Mutual Grooming Tell Us About Why Chimpanzees Groom? |
Type |
Journal Article |
| Year |
2009 |
Publication |
Ethology |
Abbreviated Journal |
Ethology |
| Volume |
115 |
Issue |
6 |
Pages |
566 - 575 |
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Grooming might be a resource that is offered in exchange for some benefit (e.g. access to a feeding site or coalitionary support) or it might be a mechanism for building and servicing social relationships, whose function, in turn, is to facilitate the exchange of resources and services. Bi-directional (or simultaneous mutual) grooming is unusually common among chimpanzees (though rare in other primates) and we suggest that this might be because it is an especially strong indicator of social bonding. Because the bonding role of bi-directional grooming offers substantially different predictions from the interpretation offered by the models based on reciprocal altruism (RA), we use a critical tests methodology (i.e. tests that unequivocally support one hypothesis at the expense of the other) to differentiate between the bonding and RA hypotheses. We use data on the dynamics of grooming interactions from a captive group of chimpanzees (Pan troglodytes) to show that dominant individuals tolerated the individuals with whom they performed bi-directional grooming more than they did those who typically provided them unidirectional grooming. Dominants rejected and terminated grooming sessions more often with the individuals who provided them with mostly unidirectional grooming than with those with whom they groomed bi-directionally. In addition, animals engaged in bi-directional grooming more often with both relatives and those with whom they were often in proximity. These results support the bonding model of mutually reciprocated grooming at the expense of the RA model, and suggest that, at least in chimpanzees, simultaneous mutual grooming may play a particularly important role in social bonding. |
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School of Biological Sciences, University of Liverpool, Liverpool, UK; Institute of Cognitive & Evolutionary Anthropology, University of Oxford, Oxford, UK DOI – 10.1111/j.1439-0310.2009.01637.x |
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© 2009 Blackwell Verlag GmbH |
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Equine Behaviour @ team @ |
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4941 |
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| Author |
Duncan, P. |
| Title |
Foal killing by stallions |
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Journal Article |
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1982 |
Publication |
Applied Animal Ethology |
Abbreviated Journal |
Appl. Animal. Ethol. |
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8 |
Issue |
6 |
Pages |
567-570 |
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Feral horses live in social systems similar to those of some species in which infant killing has been reported (e.g. lions), but such behaviour has been reported neither in horses nor in any other ungulate. The results of interviews with owners of free-ranging horses (Camargue breed) are given which show that, though rare, infant killing occurs in this breed, and that it seems to be confined to male foals. It is argued that the observed behaviour cannot simply be considered as pathological, and that close attention should be paid to the possibility that it occurs in wild and feral equids. |
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0304-3762 |
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Equine Behaviour @ team @ |
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5260 |
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| Author |
Hemelrijk, C.K. |
| Title |
Understanding Social Behaviour with the Help of Complexity Science (Invited Article) |
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Journal Article |
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2002 |
Publication |
Ethology |
Abbreviated Journal |
Ethology |
| Volume |
108 |
Issue |
8 |
Pages |
655-671 |
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Abstract In the study of complexity, a new kind of explanation has been developed for social behaviour. It shows how patterns of social behaviour can arise as a side-effect of the interaction of individuals with their social or physical environment (e.g. by self-organization). This development may influence our ideas about the direct causation and evolution of social behaviour. Furthermore, it may influence our theories about the integration of different traits. This new method has been made possible by the increase in computing power. It is now applied in many areas of science, such as physics, chemistry, sociology and economics. However, in zoology and anthropology it is still rare. The major aim of this paper is to make this method more generally accepted among behavioural scientists. |
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Blackwell Verlag, GmbH |
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1439-0310 |
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Equine Behaviour @ team @ |
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5200 |
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Mersmann, D.; Tomasello, M.; Call, J.; Kaminski, J.; Taborsky, M. |
| Title |
Simple Mechanisms Can Explain Social Learning in Domestic Dogs (Canis familiaris) |
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Journal Article |
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2011 |
Publication |
Ethology |
Abbreviated Journal |
Ethology |
| Volume |
117 |
Issue |
8 |
Pages |
675-690 |
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Abstract Recent studies have suggested that domestic dogs (Canis familiaris) engage in highly complex forms of social learning. Here, we critically assess the potential mechanisms underlying social learning in dogs using two problem-solving tasks. In a classical detour task, the test dogs benefited from observing a demonstrator walking around a fence to obtain a reward. However, even inexperienced dogs did not show a preference for passing the fence at the same end as the demonstrator. Furthermore, dogs did not need to observe a complete demonstration by a human demonstrator to pass the task. Instead, they were just as successful in solving the problem after seeing a partial demonstration by an object passing by at the end of the fence. In contrast to earlier findings, our results suggest that stimulus enhancement (or affordance learning) might be a powerful social learning mechanism used by dogs to solve such detour problems. In the second task, we examined whether naïve dogs copy actions to solve an instrumental problem. After controlling for stimulus enhancement and other forms of social influence (e.g. social facilitation and observational conditioning), we found that dogs’ problem solving was not influenced by witnessing a skilful demonstrator (either an unknown human, a conspecific or the dog’s owner). Together, these results add to evidence suggesting that social learning may often be explained by relatively simple (but powerful) mechanisms. |
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Blackwell Publishing Ltd |
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1439-0310 |
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Equine Behaviour @ team @ |
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5409 |
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Dunbar, R. I. M.; Bever, J. |
| Title |
Neocortex size predicts group size in carnivores and some insectivores |
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Journal Article |
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1998 |
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Ethology |
Abbreviated Journal |
Ethology |
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108 |
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8 |
Pages |
695-708 |
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Neocortex size has been shown to correlate with group size in primates. Data for carnivores and insectivores are used to test the generality of this relationship. The data suggest that carnivores lie on the same grade as the primates, but that insectivores lie on a separate grade to the left of these two orders. Among the insectivores, there appears to be a distinction between the 'advanced' genera (which show a relationship between group size and neocortex size) and the 'basal' genera (which do not). |
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Equine Behaviour @ team @ |
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4734 |
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