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Author |
Larose, C.; Richard-Yris, M.-A.; Hausberger, M.; Rogers, L.J. |
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Title |
Laterality of horses associated with emotionality in novel situations |
Type |
Journal Article |
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Year |
2006 |
Publication |
Laterality |
Abbreviated Journal |
Laterality |
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Volume |
11 |
Issue |
4 |
Pages |
355-367 |
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Keywords |
Affect/*physiology; Animals; Brain/*physiology; Female; Functional Laterality/*physiology; Horses; Male; *Social Behavior; *Social Environment |
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Abstract |
We have established that lateral biases are characteristic of visual behaviour in 65 horses. Two breeds, Trotters and French Saddlebreds aged 2 to 3, were tested on a novel object test. The main finding was a significant correlation between emotionality index and the eye preferred to view the novel stimulus: the higher the emotionality, the more likely that the horse looked with its left eye. The less emotive French Saddlebreds, however, tended to glance at the object using the right eye, a tendency that was not found in the Trotters, although the emotive index was the same for both breeds. The youngest French Saddlebreds did not show this trend. These results are discussed in relation to the different training practices for the breeds and broader findings on lateralisation in different species. |
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Universite de Rennes 1, France |
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English |
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ISSN |
1357-650X |
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PMID:16754236 |
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Call Number |
Equine Behaviour @ team @ room B 3.029 |
Serial |
1826 |
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Author |
Sundaresan, S.R.; Fischhoff, I.R.; Dushoff, J.; Rubenstein, D.I. |
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Title |
Network metrics reveal differences in social organization between two fission-fusion species, Grevy's zebra and onager |
Type |
Journal Article |
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Year |
2007 |
Publication |
Oecologia |
Abbreviated Journal |
Oecologia |
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Volume |
151 |
Issue |
1 |
Pages |
140-149 |
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Keywords |
Analysis of Variance; Animals; Behavior, Animal/*physiology; *Environment; Equidae/*physiology; Female; India; Kenya; Male; *Models, Theoretical; *Social Behavior; *Social Environment |
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Abstract |
For species in which group membership frequently changes, it has been a challenge to characterize variation in individual interactions and social structure. Quantifying this variation is necessary to test hypotheses about ecological determinants of social patterns and to make predictions about how group dynamics affect the development of cooperative relationships and transmission processes. Network models have recently become popular for analyzing individual contacts within a population context. We use network metrics to compare populations of Grevy's zebra (Equus grevyi) and onagers (Equus hemionus khur). These closely related equids, previously described as having the same social system, inhabit environments differing in the distribution of food, water, and predators. Grevy's zebra and onagers are one example of many sets of coarsely similar fission-fusion species and populations, observed elsewhere in other ungulates, primates, and cetaceans. Our analysis of the population association networks reveals contrasts consistent with their distinctive environments. Grevy's zebra individuals are more selective in their association choices. Grevy's zebra form stable cliques, while onager associations are more fluid. We find evidence that females associate assortatively by reproductive state in Grevy's zebra but not in onagers. The current approach demonstrates the utility of network metrics for identifying fine-grained variation among individuals and populations in association patterns. From our analysis, we can make testable predictions about behavioral mechanisms underlying social structure and its effects on transmission processes. |
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Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ 08544, USA. ssundare@princeton.edu |
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0029-8549 |
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PMID:16964497 |
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Serial |
1863 |
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Author |
Klingel, H. |
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Title |
Social organization of feral horses |
Type |
Journal Article |
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Year |
1982 |
Publication |
Journal of Reproduction and Fertility. Supplement |
Abbreviated Journal |
J Reprod Fertil Suppl |
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Volume |
32 |
Issue |
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Pages |
89-95 |
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Keywords |
Animals; Animals, Wild; Female; Horses/*physiology; Male; Sexual Behavior, Animal; *Social Behavior; Territoriality |
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Abstract |
The basic social unit in feral horses is the family group consisting of one stallion, one to a few unrelated mares and their foals. Surplus stallions associate in bachelor groups. Stallions are instrumental in bringing mares together in a unit which then persists even without a stallion. The similarity of social organization in populations living in a variety of different habitats indicates that feral horses have reverted to the habits of their wild ancestors, and that domestication has had no influence on this basic behavioural feature. |
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ISSN |
0449-3087 |
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Notes |
PMID:6962906 |
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no |
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Call Number |
refbase @ user @ |
Serial |
1958 |
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Author |
Lynch, J.J.; Fregin, G.F.; Mackie, J.B.; Monroe, R.R.J. |
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Title |
Heart rate changes in the horse to human contact |
Type |
Journal Article |
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Year |
1974 |
Publication |
Psychophysiology |
Abbreviated Journal |
Psychophysiology |
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Volume |
11 |
Issue |
4 |
Pages |
472-478 |
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Keywords |
Animals; Behavior, Animal; Electrocardiography/veterinary; *Heart Rate; Horses/*physiology; Humans; *Social Behavior; *Touch |
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ISSN |
0048-5772 |
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Notes |
PMID:4852234 |
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no |
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Call Number |
refbase @ user @ |
Serial |
1965 |
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Author |
Amé, J.-M.; Halloy, J.; Rivault, C.; Detrain, C.; Deneubourg, J.L. |
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Title |
Collegial decision making based on social amplification leads to optimal group formation |
Type |
Journal Article |
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Year |
2006 |
Publication |
Proceedings of the National Academy of Sciences of the United States of America |
Abbreviated Journal |
Proc. Natl. Acad. Sci. U.S.A. |
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Volume |
103 |
Issue |
15 |
Pages |
5835-5840 |
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Keywords |
Animals; Blattellidae/*physiology; Choice Behavior; Decision Making; Leadership; *Social Behavior |
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Abstract |
Group-living animals are often faced with choosing between one or more alternative resource sites. A central question in such collective decision making includes determining which individuals induce the decision and when. This experimental and theoretical study of shelter selection by cockroach groups demonstrates that choices can emerge through nonlinear interaction dynamics between equal individuals without perfect knowledge or leadership. We identify a simple mechanism whereby a decision is taken on the move with limited information and signaling and without comparison of available opportunities. This mechanism leads to optimal mean benefit for group individuals. Our model points to a generic self-organized collective decision-making process independent of animal species. |
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Address |
Service d'Ecologie Sociale CP231, Universite Libre de Bruxelles, Avenue F. D. Roosevelt 50, B-1050 Brussels, Belgium |
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ISSN |
0027-8424 |
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Notes |
PMID:16581903 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2042 |
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Author |
Levin, L.E.; Grillet, M.E. |
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Title |
[Diversified leadership: a social solution of problems in schools of fish] |
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Journal Article |
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Year |
1988 |
Publication |
Acta Cientifica Venezolana |
Abbreviated Journal |
Acta Cient Venez |
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Volume |
39 |
Issue |
2 |
Pages |
175-180 |
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Keywords |
Animals; Fishes; *Leadership; Reversal Learning/*physiology; *Social Behavior |
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Language |
Spanish |
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Original Title |
Liderazgo diversificado: una solucion social de problemas en el cardumen |
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ISSN |
0001-5504 |
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Notes |
PMID:3251383 |
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no |
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Call Number |
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Serial |
2045 |
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Author |
Mori, U. |
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Title |
Ecological and sociological studies of gelada baboons. Individual relationships within a unit |
Type |
Journal Article |
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Year |
1979 |
Publication |
Contributions to Primatology |
Abbreviated Journal |
Contrib Primatol |
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Volume |
16 |
Issue |
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Pages |
93-124 |
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Keywords |
Animals; Female; Grooming; *Haplorhini; *Leadership; Male; Paternal Behavior; *Social Behavior; *Theropithecus |
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English |
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ISSN |
0301-4231 |
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Notes |
PMID:101345 |
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no |
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Call Number |
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Serial |
2046 |
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Author |
Mori, U. |
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Title |
Ecological and sociological studies of gelada baboons. Inter-unit relationships |
Type |
Journal Article |
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Year |
1979 |
Publication |
Contributions to Primatology |
Abbreviated Journal |
Contrib Primatol |
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Volume |
16 |
Issue |
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Pages |
83-92 |
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Keywords |
Animals; Female; *Haplorhini; Leadership; Sex Factors; *Social Behavior; Social Distance; *Theropithecus |
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0301-4231 |
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Notes |
PMID:101344 |
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Call Number |
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Serial |
2047 |
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Author |
Mori, U. |
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Title |
Ecological and sociological studies of gelada baboons. Unit formation and the emergence of a new leader |
Type |
Journal Article |
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Year |
1979 |
Publication |
Contributions to Primatology |
Abbreviated Journal |
Contrib Primatol |
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Volume |
16 |
Issue |
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Pages |
155-181 |
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Keywords |
Animals; Female; Grooming; *Haplorhini; Leadership; Male; *Social Behavior; Social Distance; *Theropithecus |
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ISSN |
0301-4231 |
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Notes |
PMID:101335 |
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no |
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Call Number |
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Serial |
2048 |
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Author |
Alexander, B.K.; Bowers, J.M. |
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Title |
Social organization of a troop of Japanese monkeys in a two-acre enclosure |
Type |
Journal Article |
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Year |
1969 |
Publication |
Folia Primatologica; International Journal of Primatology |
Abbreviated Journal |
Folia Primatol (Basel) |
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Volume |
10 |
Issue |
3 |
Pages |
230-242 |
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Keywords |
Animals; *Behavior, Animal; *Haplorhini; Leadership; *Social Behavior |
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ISSN |
0015-5713 |
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Notes |
PMID:4976202 |
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Call Number |
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Serial |
2055 |
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