| Records |
| Author |
Amandine Ramseyer; Bernard Thierry; Alain Boissy; Bertrand Dumont |
| Title |
Decision-making Processes in Group Departures of Cattle |
Type |
Journal Article |
| Year |
2009 |
Publication |
Ethology |
Abbreviated Journal |
Ethology |
| Volume |
115 |
Issue |
10 |
Pages |
948-957 |
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| Abstract |
To keep social cohesiveness, group-living animals have to reach consensus decisions through recruitment processes. This implies that decision-making depends on the behaviours and social relationships of several group members at different stages of movements. We tested these assumptions in a group of fifteen 18-mo-old Charolais heifers (Bos taurus) at pasture, in which two observers continuously videotaped social interactions and group departures after resting periods. These departures were preceded by a phase of preparation characterized by an increase in activity. The number of heifers participating to a movement increased with the number of group members oriented in the direction of the movement before departure. The first moving animal also recruited a higher number of mates when it had a greater number of close neighbours, the first individuals to follow being mainly its preferential partners. Coercive interactions such as pressing behaviours were observed within the 5 min preceding or following departure. After departure, the numbers of walks and restarts of the first two movers were still operative in recruiting others. The frequency of pauses of the first mover was significantly higher when it was not followed, meaning that it adjusted its behaviour to that of other group members. Decision-making was distributed among group members, with any individual being liable to move first. The behaviour of cows and their spatial distribution before departure, at departure and after departure significantly affected the number of participants in the movement, demonstrating that decision-making was time-distributed in the studied cattle group. |
| Address |
INRA, UR 1213 Herbivores, Saint-Gens-Champanelle, France; Dpartement Ecologie, Physiologie et Ethologie, IPHC, Centre National de la Recherche Scientifique, Universit de Strasbourg, Strasbourg, France |
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© 2009 Blackwell Verlag GmbH |
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Equine Behaviour @ team @ |
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4992 |
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| Author |
Raquel Monclús; Heiko G. Rödel |
| Title |
Influence of Different Individual Traits on Vigilance Behaviour in European Rabbits |
Type |
Journal Article |
| Year |
2009 |
Publication |
Ethology |
Abbreviated Journal |
Ethology |
| Volume |
115 |
Issue |
8 |
Pages |
758-766 |
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| Abstract |
An animal's level of vigilance depends on various environmental factors such as predator presence or the proximity of conspecific competitors. In addition, several individual traits may influence vigilance. We investigated the effects of body condition, social rank and the state of pregnancy on individual vigilance (scanning) rates in individually marked European rabbits (Oryctolagus cuniculus) of a field enclosure population. We found lower rates in young rabbits than in adult females, but male and female juveniles did not differ. Vigilance of juveniles was positively correlated with their age-dependent body mass (used as a measure of body condition), i.e. young rabbits with lower body condition scanned less. We suggest that juveniles with low body condition were trading off vigilance against feeding to maximise their growth. In contrast, there was no significant correlation between body mass and vigilance in adult females. Adult females increased scanning rates during late pregnancy, which might constitute a behavioural compensation because of their lower capacity to escape predator attacks. In addition, adult females with low social ranks scanned more than high ranking individuals, likely because of their higher risk of attacks by conspecifics. In summary, our results highlight various individual characteristics that influence vigilance behaviour in European rabbits. |
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Unidad de Zoologa, Dpto. Biologa, Universidad Autnoma de Madrid, Madrid, Spain; Department of Animal Physiology, University of Bayreuth, Bayreuth, Germany |
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© 2009 Blackwell Verlag GmbH |
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Equine Behaviour @ team @ |
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4994 |
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| Author |
Majolo, B.; Ventura, R.; Koyama, N. F. |
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Anxiety Level Predicts Post-Conflict Behaviour in Wild Japanese Macaques (Macaca fuscata yakui) |
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2009 |
Publication |
Ethology |
Abbreviated Journal |
Ethology |
| Volume |
115 |
Issue |
10 |
Pages |
986-995 |
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Reconciliation (i.e. the post-conflict exchange of friendly behaviour between former opponents) functions to control for the detrimental effects that aggression may have on social relationships. Studies conducted so far have investigated intra-individual sources of variation in post-conflict behaviour, showing that animals have a stronger increase in anxiety and are more likely to reconcile after conflicts with valuable partners, such as kin. Much less attention has been given to how differences between individuals in emotional profiles affect post-conflict behaviour. Our aim was to analyse whether inter-individual differences in baseline anxiety levels predicted the magnitude of the increase in anxiety following a conflict and the occurrence of reconciliation. We collected data on two groups of wild Japanese macaques (Macaca fuscata yakui). Animals having a higher baseline level of anxiety had a more dramatic anxious response following a conflict while controlling for a series of factors (e.g. relationship quality between opponents). These more anxious animals were also less likely to reconcile than more relaxed individuals. Therefore, more anxious animals face some social costs by being less able to cope with the post-conflict condition. We propose that differences in anxiety levels may be interpreted as tradeoffs between benefits and costs across conditions. For example, more anxious animals, who are less able to reconcile conflicts, might also be less exploratory and thus face a lower risk to eat unknown, poisonous food. |
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Department of Psychology, University of Lincoln, Brayford Pool, Lincoln, UK; Scottish Primate Research Group, School of Social and Health Sciences Division of Psychology, University of Abertay Dundee, Dundee, UK; Research Centre in Evolutionary Anthropology & Palaeoecology, School of Natural Science & Psychology, Liverpool John Moores University, Liverpool, UK DOI – 10.1111/j.1439-0310.2009.01685.x |
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© 2009 Blackwell Verlag GmbH |
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Equine Behaviour @ team @ |
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4996 |
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| Author |
Brügger, A. |
| Title |
Gesunde Körperhaltung im Alltag |
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Book Whole |
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1980 |
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Dr. A. Brügger |
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Zürich |
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Equine Behaviour @ team @ |
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4451 |
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| Author |
Altmann, Dagmar |
| Title |
Harnen und Koten bei Säugetieren |
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Book Whole |
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1969 |
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Die neue Brehm-Bücherei |
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404 |
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Ein Beitr. zur vergleichenden Verhaltensforschung. Mit 50 Abb. u. 7 Tab. Wittenberg: Ziemsen 1969. 104 S.(Berliner Tierpark-Buch. 16.) (Die neue Brehm-Bücherei. 404.) |
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Ziemsen |
Place of Publication |
Wittenberg |
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German |
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| Notes |
from Prof. Hans Klingels Equine Reference List |
Approved |
no |
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refbase @ user @ |
Serial |
637 |
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| Author |
Brauer, J.; Kaminski, J.; Riedel, J.; Call, J.; Tomasello, M. |
| Title |
Making inferences about the location of hidden food: social dog, causal ape |
Type |
Journal Article |
| Year |
2006 |
Publication |
Journal of comparative psychology |
Abbreviated Journal |
J Comp Psychol |
| Volume |
120 |
Issue |
1 |
Pages |
38-47 |
| Keywords |
Animals; Communication; Cues; Dogs; Exploratory Behavior; *Feeding Behavior; Female; *Food; Male; Pan paniscus; Pan troglodytes; *Visual Perception |
| Abstract |
Domestic dogs (Canis familiaris) and great apes from the genus Pan were tested on a series of object choice tasks. In each task, the location of hidden food was indicated for subjects by some kind of communicative, behavioral, or physical cue. On the basis of differences in the ecologies of these 2 genera, as well as on previous research, the authors hypothesized that dogs should be especially skillful in using human communicative cues such as the pointing gesture, whereas apes should be especially skillful in using physical, causal cues such as food in a cup making noise when it is shaken. The overall pattern of performance by the 2 genera strongly supported this social-dog, causal-ape hypothesis. This result is discussed in terms of apes' adaptations for complex, extractive foraging and dogs' adaptations, during the domestication process, for cooperative communication with humans. |
| Address |
Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany. jbraeuer@eva.mpg.de |
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Washington, D.C. : 1983 |
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English |
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0735-7036 |
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PMID:16551163 |
Approved |
yes |
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refbase @ user @ |
Serial |
597 |
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Call, J.; Brauer, J.; Kaminski, J.; Tomasello, M. |
| Title |
Domestic dogs (Canis familiaris) are sensitive to the attentional state of humans |
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Journal Article |
| Year |
2003 |
Publication |
Journal of comparative psychology (Washington, D.C. : 1983) |
Abbreviated Journal |
J Comp Psychol |
| Volume |
117 |
Issue |
3 |
Pages |
257-263 |
| Keywords |
Animals; *Appetitive Behavior; *Attention; *Bonding, Human-Pet; *Concept Formation; Cues; Dogs/*psychology; Female; Humans; *Inhibition (Psychology); Male; Nonverbal Communication |
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Twelve domestic dogs (Canis familiaris) were given a series of trials in which they were forbidden to take a piece of visible food. In some trials, the human continued to look at the dog throughout the trial (control condition), whereas in others, the human (a) left the room, (b) turned her back, (c) engaged in a distracting activity, or (d) closed her eyes. Dogs behaved in clearly different ways in most of the conditions in which the human did not watch them compared with the control condition, in which she did. In particular, when the human looked at them, dogs retrieved less food, approached it in a more indirect way, and sat (as opposed to laid down) more often than in the other conditions. Results are discussed in terms of domestic dogs' social-cognitive skills and their unique evolutionary and ontogenetic histories. |
| Address |
Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany. call@eva.mpg.de |
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Washington, D.C. : 1983 |
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English |
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0735-7036 |
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PMID:14498801 |
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no |
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refbase @ user @ |
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713 |
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| Author |
Horner, V.; Whiten, A. |
| Title |
Learning from others' mistakes limits on understanding a trap-tube task by young chimpanzees (Pan troglodytes) and children (Homo sapiens) |
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Journal Article |
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2007 |
Publication |
Journal of comparative psychology |
Abbreviated Journal |
J Comp Psychol |
| Volume |
121 |
Issue |
1 |
Pages |
12-21 |
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A trap-tube task was used to determine whether chimpanzees (Pan troglodytes) and children (Homo sapiens) who observed a model's errors and successes could master the task in fewer trials than those who saw only successes. Two- to 7-year-old chimpanzees and 3- to 4-year-old children did not benefit from observing errors and found the task difficult. Two of the 6 chimpanzees developed a successful anticipatory strategy but showed no evidence of representing the core causal relations involved in trapping. Three- to 4-year-old children showed a similar limitation and tended to copy the actions of the demonstrator, irrespective of their causal relevance. Five- to 6-year-old children were able to master the task but did not appear to be influenced by social learning or benefit from observing errors. |
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Centre for Social Learning and Cognitive Evolution, School of Psychology, University of St Andrews, Fife, Scotland, UK. vhorner@rmy.emory.edu |
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Washington, D.C. : 1983 |
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English |
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0735-7036 |
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PMID:17324071 |
Approved |
yes |
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refbase @ user @ |
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728 |
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| Author |
Horowitz, A.C. |
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Do humans ape? Or do apes human? Imitation and intention in humans (Homo sapiens) and other animals |
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Journal Article |
| Year |
2003 |
Publication |
Journal of comparative psychology |
Abbreviated Journal |
J Comp Psychol |
| Volume |
117 |
Issue |
3 |
Pages |
325-336 |
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Adolescent; Adult; Animals; *Appetitive Behavior; Attention; Child, Preschool; Concept Formation; Female; Humans; *Imitative Behavior; Male; Motivation; Pan troglodytes/*psychology; *Problem Solving; *Psychomotor Performance; Reaction Time; Species Specificity |
| Abstract |
A. Whiten, D. M. Custance, J.-C. Gomez, P. Teixidor, and K. A. Bard (1996) tested chimpanzees' (Pan troglodytes) and human children's (Homo sapiens) skills at imitation with a 2-action test on an “artificial fruit.” Chimpanzees imitated to a restricted degree; children were more thoroughly imitative. Such results prompted some to assert that the difference in imitation indicates a difference in the subjects' understanding of the intentions of the demonstrator (M. Tomasello, 1996). In this experiment, 37 adult human subjects were tested with the artificial fruit. Far from being perfect imitators, the adults were less imitative than the children. These results cast doubt on the inference from imitative performance to an ability to understand others' intentions. The results also demonstrate how any test of imitation requires a control group and attention to the level of behavioral analysis. |
| Address |
Department of Cognitive Science, University of California, San Diego, CA, USA. ahorowitz@crl.ucsd.edu |
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Washington, D.C. : 1983 |
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English |
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0735-7036 |
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PMID:14498809 |
Approved |
yes |
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refbase @ user @ |
Serial |
736 |
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| Author |
Hausberger, M.; Bruderer, C.; Le Scolan, N.; Pierre, J.-S. |
| Title |
Interplay between environmental and genetic factors in temperament/personality traits in horses (Equus caballus) |
Type |
Journal Article |
| Year |
2004 |
Publication |
Journal of Comparative Psychology |
Abbreviated Journal |
J Comp Psychol |
| Volume |
118 |
Issue |
4 |
Pages |
434-446 |
| Keywords |
*Affect; Animals; Behavior, Animal/*physiology; *Environment; Female; Horses/*psychology; Learning; Male; Memory/physiology |
| Abstract |
The aim of the present study was to broach the question of the relative influence of different genetic and environmental factors on different temperament/personality traits of horses (Equus caballus). The researchers submitted 702 horses to standardized experimental tests and investigated 9 factors, either genetic or environmental. Genetic factors, such as sire or breed, seemed to influence more neophobic reactions, whereas environmental factors, such as the type of work, seemed to play a more dominant role in reactions to social separation or learning abilities. Additive effects were evident, showing how environmental factors may modulate behavioral traits. This study constitutes a first step toward understanding the relative weights of genetic factors and how the environment may intervene in determining individual behavioral characteristics. |
| Address |
Ethologie-Evolution-Ecologie, Universite de Rennes 1, Rennes, France. Martine.Hausberger@univ-rennes1.fr |
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Washington, D.C. : 1983 |
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English |
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0735-7036 |
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PMID:15584780 |
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no |
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1897 |
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