| Records |
| Author |
Hausberger, M.; Le Scolan, N.; Muller, C.; Gautier, E.; Wolff, A. |
Title  |
Individual behavioural characteristics in horses: predictability, endogenous and environmental factors |
Type |
Journal Article |
| Year |
1996 |
Publication |
Journée d`Etude |
Abbreviated Journal |
Journée d`Etude |
| Volume |
22 |
Issue |
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Pages |
113- 123 |
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| Publisher |
Insitute du Cheval |
Place of Publication |
Paris |
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| Call Number |
Equine Behaviour @ team @ |
Serial |
5023 |
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| Author |
Zachritz W.H.; Lundie L.L.; Wang H.; Thomas R.K. |
| Title |
Investigating cognitive abilities in animals: unrealized potential |
Type |
Journal Article |
| Year |
1996 |
Publication |
Cognitive Brain Research |
Abbreviated Journal |
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| Volume |
3 |
Issue |
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Pages |
157-166 |
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Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
3449 |
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| Author |
Lefebvre, L.; Giraldeau, L.-A. |
| Title |
Is social learning an adaptive specialisation? |
Type |
Book Chapter |
| Year |
1996 |
Publication |
Social learning in animals: The root of culture |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
107-128 |
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Academic Press. |
Place of Publication |
San Diego |
Editor |
Heyes, C. M. ;B. G. Galef B. G..Jr. |
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ISBN |
978-0122739651 |
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Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
4415 |
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| Author |
Wolff, A.; Hausberger, M. |
| Title |
Learning and memorisation of two different tasks in horses: the effects of age, sex and sire |
Type |
Journal Article |
| Year |
1996 |
Publication |
Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
| Volume |
46 |
Issue |
3-4 |
Pages |
137-143 |
| Keywords |
Horse; Learning; Memory; Instrumental task; Spatial task |
| Abstract |
Learning and memory abilities of 1-3 year old horses were assessed using instrumental and spatial tasks. No important differences were observed in the success of learning of the instrumental task (chest opening) according to sex or age. Younger females, however, seemed to learn more quickly. The offspring of a particular stallion were slower to learn than other horses. All horses memorised this task and opened the chest in a very short time in the second session. The animals that learned the task easily were not necessarily faster in the memorisation test. In the spatial task, learning ability did not seem to be related to age but more females than males were successful. The offspring of one stallion were more successful than other horses. Only 76% of the horses succeeded in the memorisation test, independently of age or sex. No correlation was found between the tasks in the latencies of either the learning or the memorisation tests for the same horses. The instrumental and spatial tasks may involve different processes. |
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no |
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refbase @ user @ |
Serial |
855 |
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| Author |
Gary C. Jahn; Craig Packer,Robert Heinsohn |
| Title |
Lioness leadership |
Type |
Journal Article |
| Year |
1996 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
| Volume |
271 |
Issue |
5253 |
Pages |
1216-1219 |
| Keywords |
Animals; *Behavior; Animal; Cooperative Behavior; Female; Lions/*psychology; Territoriality |
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0036-8075 |
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no |
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Equine Behaviour @ team @ Jahn1996 |
Serial |
2073 |
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| Author |
de Waal, F.B. |
| Title |
Macaque social culture: development and perpetuation of affiliative networks |
Type |
Journal Article |
| Year |
1996 |
Publication |
Journal of comparative psychology (Washington, D.C. : 1983) |
Abbreviated Journal |
J Comp Psychol |
| Volume |
110 |
Issue |
2 |
Pages |
147-154 |
| Keywords |
Animals; Dominance-Subordination; Female; Macaca mulatta/*psychology; Male; Maternal Behavior; *Peer Group; Sexual Behavior, Animal; *Social Behavior; Social Distance; *Social Environment |
| Abstract |
Maternal affiliative relations may be transmitted to offspring, similar to the way in which maternal rank determines offspring rank. The development of 23 captive female rhesus monkeys (Macaca mulatta) was followed from the day of birth until adulthood. A multivariate analysis compared relations among age peers with affiliative relations, kinship, and rank distance among mothers. Maternal relations were an excellent predictor of affiliative relations among daughters, explaining up to 64% of the variance. Much of this predictability was due to the effect of kinship. However, after this variable had been controlled, significant predictability persisted. For relations of female subjects with male peers, on the other hand, maternal relations had no significant predictive value beyond the effect of kinship. One possible explanation of these results is that young rhesus females copy maternal social preferences through a process of cultural learning. |
| Address |
Department of Psychology, Emory University, Atlanta, Georgia 30322, USA. dewaal@rmy.emory.edu |
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English |
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| ISSN |
0735-7036 |
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| Notes |
PMID:8681528 |
Approved |
no |
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refbase @ user @ |
Serial |
204 |
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| Author |
Hashimoto, C.; Takenaka, O.; Furuichi, T. |
| Title |
Matrilineal kin relationship and social behavior of wild bonobos (Pan paniscus): Sequencing the D-loop region of mitochondrial DNA |
Type |
Journal Article |
| Year |
1996 |
Publication |
Primates |
Abbreviated Journal |
Primates |
| Volume |
37 |
Issue |
3 |
Pages |
305-318-318 |
| Keywords |
Biomedical and Life Sciences |
| Abstract |
Matrilineal kin-relations among wild bonobos (Pan paniscus) were studied by DNA analysis. Subject individuals were the members of E1 group, living at Wamba, Zaire, which has been studied since 1974. DNA samples were extracted from wadges that bonobos spat out when feeding on sugar cane. The D-loop region of mitochondrial DNA was amplified by the PCR method, and a nucleotide sequence of 350 base pairs was determined for 17 individuals. Nucleotide variations were found at 44 positions of the sequence. Based on these variations, 13 matrilineal units were divided into seven groups, and the mother of an orphan male was determined among several females. These genetic analyses, together with behavioral observation to date, revealed the following facts. High sequence variation in the target region indicated that females transfer between groups of bonobos, which is in agreement with supposition from long-term field studies. For females, there was no relationship between genetic closeness and social closeness that is represented by frequencies of proximity or grooming. After immigration into a new group, females form social associations with senior females without regard to kin relationship. |
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| Publisher |
Springer Japan |
Place of Publication |
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| ISSN |
0032-8332 |
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no |
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Equine Behaviour @ team @ |
Serial |
5199 |
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| Author |
Brunner, D.; Kacelnik, A.; Gibbon, J. |
| Title |
Memory for inter-reinforcement interval variability and patch departure decisions in the starling,Sturnus vulgaris |
Type |
Journal Article |
| Year |
1996 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
51 |
Issue |
5 |
Pages |
1025-1045 |
| Keywords |
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| Abstract |
An experiment with starlings was conducted to investigate the effect of variability in inter-reinforcement intervals on foraging decisions. The experimental design simulated an environment in which food was distributed in patches. Patches contained zero to four food items which could be collected by pecking at a key. All patches ended with sudden depletion. The time elapsed since the last reinforcement was the only way to detect the depletion of the patch. Once a patch was depleted, a new patch could be reached by completion of a travel requirement of 20 flights between two perches. Key pecks within a patch and the time of the last response in a patch (giving-in time) were recorded. The level of variability in the inter-reinforcement intervals was varied between different conditions. An increase in inter-reinforcement interval variability resulted in a flattening of response rate functions and giving-in time distributions, and in more asymmetry of the response functions, but not of the giving-in time distributions. Two theoretical models of decision making are presented, which differ in the assumptions about memory constraints. In one case, all inter-reinforcement intervals are remembered but in the other, only the intervals with extreme values are remembered. Both models accommodate response rates as a function of trial time, but only the second is compatible with the observed departure decision. Our results are compatible with net rate maximization. |
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no |
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Serial |
2109 |
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| Author |
Phillips, K. |
| Title |
Natural conceptual behavior in squirrel monkeys (saimiri sciureus): An experimental investigation |
Type |
Journal Article |
| Year |
1996 |
Publication |
Primates |
Abbreviated Journal |
Primates |
| Volume |
37 |
Issue |
3 |
Pages |
327-332 |
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| Abstract |
Abstract Natural conceptual discriminations have been tested in many different species, including pigeons and a variety of non-human primates. The ability of four male squirrel monkeys (Saimiri sciureus) to learn and use the natural concept “squirrel monkey” was investigated in this study. After a training phase, subjects were presented with novel stimuli in transfer and test trials. All subjects performed at a rate significantly above chance on the first test trial (p<.001), indicating that squirrel monkeys can utilize natural concepts in the laboratory. |
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no |
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Equine Behaviour @ team @ |
Serial |
3114 |
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| Author |
Barton, R.A. |
| Title |
Neocortex size and behavioural ecology in primates |
Type |
Journal Article |
| Year |
1996 |
Publication |
Proceedings of the Royal Society B |
Abbreviated Journal |
Proc. R. Soc. Lond. B |
| Volume |
263 |
Issue |
1367 |
Pages |
173-177 |
| Keywords |
Animals; *Behavior, Animal; Brain/*anatomy & histology; Cerebral Cortex/*anatomy & histology/*physiology; *Ecology; Evolution; Primates/anatomy & histology/*physiology/psychology; Regression Analysis; Species Specificity |
| Abstract |
The neocortex is widely held to have been the focus of mammalian brain evolution, but what selection pressures explain the observed diversity in its size and structure? Among primates, comparative studies suggest that neocortical evolution is related to the cognitive demands of sociality, and here I confirm that neocortex size and social group size are positively correlated once phylogenetic associations and overall brain size are taken into account. This association holds within haplorhine but not strepsirhine primates. In addition, the neocortex is larger in diurnal than in nocturnal primates, and among diurnal haplorhines its size is positively correlated with the degree of frugivory. These ecological correlates reflect the diverse sensory-cognitive functions of the neocortex. |
| Address |
Department of Anthropology, University of Durham |
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English |
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0962-8452 |
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| Notes |
PMID:8728982 |
Approved |
no |
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Equine Behaviour @ team @ |
Serial |
4783 |
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