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| Author |
Weeks, J.W.; Crowell-Davis, S.L.; Heusner, G. |
| Title |
Preliminary study of the development of the Flehmen response in Equus caballus |
Type |
Journal Article |
| Year |
2002 |
Publication |
Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
| Volume |
78 |
Issue |
2-4 |
Pages  |
329-335 |
| Keywords |
Horse behavior; Flehmen; Foal development |
| Abstract |
The flehmen response is commonly seen in most ungulates as well as in several other species (e.g. felids). The behavior is most often thought to be part of the sexual behavioral repertoire of males. One reigning hypothesis suggests that this behavior allows the male to determine the estrous state of a female through the chemosensory functions of the vomeronasal organ. However, females and young of both sexes also exhibit this behavior. Horse foals most frequently show the flehmen response during their first month of life with colts showing the behavior more often than fillies. This study tested the flehmen response on male and female foals throughout their pre-pubertal period. Foals were separately presented estrous and non-estrous urine weekly during the first month of life and then monthly until they were approximately 7 months of age. No significant differences were found between male and female foals for the following variables: latency to flehmen, duration of flehmen, frequency of flehmen and sniffs. |
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615 |
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| Author |
Hausberger, M.; Muller, C. |
| Title |
A brief note on some possible factors involved in the reactions of horses to humans |
Type |
Journal Article |
| Year |
2002 |
Publication |
Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
| Volume |
76 |
Issue |
4 |
Pages |
339-344 |
| Keywords |
Horses; Aggressiveness; Behavioural reactions; Human-animal relationship |
| Abstract |
In order to investigate relationships of adult horses to humans, we developed a simple evaluation test and scores based on observations. The first reactions of 224 adult horses to the presence of an experimenter were observed and scored. All these horses belonged to the same riding school, had the same general housing conditions and were all geldings. The evaluation was based on the horse's posture. Individual differences that could be related to some extent to the breed but also to human factors emerged clearly. French saddlebreds showed more often friendly behaviour than Angloarabs, whereas thoroughbreds were more indifferent. Clear variations occurred between groups of horses that depended on different caretakers. In this school, one caretaker is responsible for the whole daily management of a group of horses and is probably a very important factor in their well-being. The effects of this daily relation to a human seemed to be involved in the reactions to a strange person. Further studies are required to investigate what, in practice, may be determinant. |
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no |
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refbase @ user @ |
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329 |
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Jones, J.E.; Antoniadis, E.; Shettleworth, S.J.; Kamil, A.C. |
| Title |
A comparative study of geometric rule learning by nutcrackers (Nucifraga columbiana), pigeons (Columba livia), and jackdaws (Corvus monedula) |
Type |
Journal Article |
| Year |
2002 |
Publication |
Journal of comparative psychology (Washington, D.C. : 1983) |
Abbreviated Journal |
J Comp Psychol |
| Volume |
116 |
Issue |
4 |
Pages |
350-356 |
| Keywords |
Animals; Behavior, Animal/physiology; Birds; Feeding Behavior/physiology; Learning/*physiology; *Mathematics; Random Allocation; Spatial Behavior/*physiology |
| Abstract |
Three avian species, a seed-caching corvid (Clark's nutcrackers; Nucifraga columbiana), a non-seed-caching corvid (jackdaws; Corvus monedula), and a non-seed-caching columbid (pigeons; Columba livia), were tested for ability to learn to find a goal halfway between 2 landmarks when distance between the landmarks varied during training. All 3 species learned, but jackdaws took much longer than either pigeons or nutcrackers. The nutcrackers searched more accurately than either pigeons or jackdaws. Both nutcrackers and pigeons showed good transfer to novel landmark arrays in which interlandmark distances were novel, but inconclusive results were obtained from jackdaws. Species differences in this spatial task appear quantitative rather than qualitative and are associated with differences in natural history rather than phylogeny. |
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School of Biological Sciences, University of Nebraska-Lincoln, 68588-0118, USA |
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English |
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0735-7036 |
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PMID:12539930 |
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no |
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refbase @ user @ |
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369 |
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Westergaard, G.C.; Suomi, S.J.; Higley, J.D. |
| Title |
Handedness is associated with immune functioning and behavioural reactivity in rhesus macaques |
Type |
Journal Article |
| Year |
2002 |
Publication |
Laterality |
Abbreviated Journal |
Laterality |
| Volume |
7 |
Issue |
4 |
Pages |
359-369 |
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| Abstract |
In the present study we examined the relationship among handedness, immune functioning, and behavioural reactivity in rhesus macaques. We used the absolute number of CD4+ (T-helper) and CD8+ (T-suppressor) cells as dependent measures of immune functioning. We derived reactivity profiles from behavioural responses to a threat, and hand preference profiles from a quadrupedal food-reaching test. The results indicate positive correlations between the frequency of right versus left hand reaches and the absolute number of CD4+ cells, and between the frequency of right versus left hand reaches and the degree of human-directed aggression in response to an invasive threat. Immune measures were not associated with the strength of hand preference. These results are consistent with and extend previous findings obtained with rodents to nonhuman primates and provide further support for the view that behavioural lateralisation is associated with immune functioning and behavioural reactivity. |
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Routledge |
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1357-650x |
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doi: 10.1080/13576500143000230 |
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Equine Behaviour @ team @ |
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5779 |
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| Author |
Kemp S.M. |
| Title |
Operationalizing situated cognition and learning |
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Journal Article |
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2002 |
Publication |
Cognitive Systems Research |
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3 |
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361-383 |
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no |
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refbase @ user @ |
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3505 |
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| Author |
R. J. Andrew; J. A. S. Watkins (eds) |
| Title |
Evidence of cerebral lateralization from senses other than vision |
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Book Whole |
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2002 |
Publication |
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365-382 |
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Cambridge University Press |
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New York |
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R. J. Andrew ; J. A. S. Watkins |
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9780521781619 |
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no |
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Equine Behaviour @ team @ L.J.Rogers+R.Andrew(eds)2002 |
Serial |
4625 |
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Hauser MD; Santos LR; Spaepen GM; Pearson HE |
| Title |
Problem solving, inhibition and domain-specific experience: experiments on cotton-top tamarins, Saguinus oedipus |
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Journal Article |
| Year |
2002 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
64 |
Issue |
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Pages |
387 |
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no |
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Equine Behaviour @ team @ |
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3067 |
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| Author |
Broom, M.; Cannings, C. |
| Title |
Modelling Dominance Hierarchy formation as a Multi-player game |
Type |
Journal Article |
| Year |
2002 |
Publication |
Journal of Theoretical Biology |
Abbreviated Journal |
J. Theor. Biol. |
| Volume |
219 |
Issue |
3 |
Pages |
397-413 |
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Animals who live in groups need to divide available resources amongst themselves. This is often achieved by means of a dominance hierarchy, where dominant individuals obtain a larger share of the resources than subordinate individuals. This paper introduces a model of dominance hierarchy formation using a multi-player extension of the classical Hawk-Dove game. Animals play non-independent pairwise games in a Swiss tournament which pairs opponents against those which have performed equally well in the conflict so far, for a fixed number of rounds. Resources are divided according to the number of contests won. The model, and its emergent properties, are discussed in the context of experimental observations. |
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450 |
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Previc, F.H. |
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Thyroid hormone production in chimpanzees and humans: implications for the origins of human intelligence |
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Journal Article |
| Year |
2002 |
Publication |
American Journal of Physical Anthropology |
Abbreviated Journal |
Am J Phys Anthropol |
| Volume |
118 |
Issue |
4 |
Pages |
402-3; discussion 404-5 |
| Keywords |
Animals; Humans; *Intelligence; Pan troglodytes/*metabolism; Species Specificity; Thyroid Hormones/*biosynthesis |
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Northrop Grumman Information Technology, San Antonio, Texas 78228, USA. fred.previc@brooks.af.mil |
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English |
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0002-9483 |
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PMID:12124921 |
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no |
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Equine Behaviour @ team @ |
Serial |
4108 |
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| Author |
Kurtzman H.S.; Church R.M.; Crystal J.D. |
| Title |
Data archiving for animal cognition research: Report of an NIMH workshop |
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Journal Article |
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2002 |
Publication |
Animal Learning & Behavior |
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30 |
Issue |
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Pages |
405-412 |
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no |
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refbase @ user @ |
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3504 |
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