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Author |
Schilder, M.B.H. |
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Title |
Social behaviour and social arganization of a herd of plains zebra in a safari park |
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Year |
1990 |
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Ph.D. thesis |
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University of Utrecht |
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Notes |
from Professor Hans Klingels Equine Reference List |
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yes |
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1566 |
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Author |
Klingel, H. |
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Title |
Kalameili – future home of the Przewalski horse? |
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Book Chapter |
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Year |
1990 |
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Proceedings of the 5th International Symposium on the Preservation of the Przewalski Horse, Leipzig |
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221-224 |
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Zoolog Garten |
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Leipzig |
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Seifert, S. |
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Notes |
from Professor Hans Klingels Equine Reference List |
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yes |
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Serial |
1323 |
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Author |
Würbel, H. |
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Title |
The relationship between social structure and mating system in donkeys & Mating strategies of male donkeys in a promiscuous mating system"l structure and mating system in donkeys & |
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Year |
1990 |
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Diploma thesis |
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Faculty of Natural Sciences, University of Berne, Switzerland |
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Notes |
from Professor Hans Klingels Equine Reference List |
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yes |
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1724 |
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Author |
Cheney D.L.; Seyfarth, R.M. |
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Title |
How monkeys see the world: Inside the mind of another species |
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Year |
1990 |
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University of Chicago Press |
Place of Publication |
Chicago |
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no |
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Call Number |
refbase @ user @ |
Serial |
706 |
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Author |
Tomasello, M. |
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Title |
Cultural transmission in the tool use and communicatory signalling of chimpanzees? |
Type |
Book Chapter |
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Year |
1990 |
Publication |
Language and Intelligence in Monkeys and Apes. |
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Pages |
274-311 |
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Cambridge University Press |
Place of Publication |
Cambridge |
Editor |
Parker,S.T.;Gibson,K.R. |
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Call Number |
Equine Behaviour @ team @ |
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5267 |
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Author |
Houpt, K.A.; Zahorik, D.M.; Swartzman-Andert, J.A. |
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Title |
Taste aversion learning in horses |
Type |
Journal Article |
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Year |
1990 |
Publication |
Journal of animal science |
Abbreviated Journal |
J. Anim Sci. |
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Volume |
68 |
Issue |
8 |
Pages |
2340-2344 |
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Keywords |
Animal Feed; Animals; *Avoidance Learning; Feeding Behavior/*psychology; *Food Preferences; Horses/physiology/*psychology; *Taste |
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Abstract |
The ability of ponies to learn to avoid a relatively novel food associated with illness was tested in three situations: when illness occurred immediately after consuming a feed; when illness occurred 30 min after consuming a feed; and when illness was contingent upon eating one of three feeds offered simultaneously. Apomorphine was used to produce illness. The feeds associated with illness were corn, alfalfa pellets, sweet feed and a complete pelleted feed. The ponies learned to avoid all the fees except the complete feed when apomorphine injection immediately followed consumption of the feed. However, the ponies did not learn to avoid a feed if apomorphine was delayed 30 min after feed consumption. They could learn to avoid alfalfa pellets, but not corn, when these feeds were presented with the familiar “safe foods,” oats and soybean meal. Ponies apparently are able to learn a taste aversion, but there were constraints on this learning ability. Under the conditions of this study, they did not learn to avoid a food that made them sick long after consumption of the food, and they had more difficulty learning to avoid highly palatable feeds. |
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Address |
Cornell University, Ithaca, NY 14853 |
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English |
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0021-8812 |
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Notes |
PMID:2401656 |
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no |
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Call Number |
refbase @ user @ |
Serial |
41 |
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Author |
Rutberg, A.T.; Greenberg, S.A. |
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Title |
Dominance, aggression frequencies and modes of aggressive competition in feral pony mares |
Type |
Journal Article |
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Year |
1990 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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Volume |
40 |
Issue |
2 |
Pages |
322-331 |
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Abstract |
Feral pony mares, Equus caballus, at Assateague Island, Maryland, formed linear dominance hierarchies within bands. Generally, older mares dominated younger mares, and larger mares dominated smaller mares. Large mares initiated aggression more often than small mares when age was controlled for but, surprisingly, older mares initiated aggression less often than younger mares when size was controlled for. Thus, mares peak in aggressiveness fairly soon after achieving full size and then, while maintaining or improving their rank in the domainance hierarchy, progressively reduce their involvement in aggression as they grow older, Involvement in aggression per mare increased as number of mares in the group increased; this effect was independent of nearest-mare distances. Frequency of involvement in aggression did not differ between mares that had changed bands within the year and mares whose band association had continued for a year or more. Aggression was directed more frequently than expected at subordinate mares who were nursing, and also occurred more frequently than expected at water holes. The proportion of aggressive encounters during grazing closely matched the total proportion of time spent grazing. Subordinate mares with foals received aggression more often than subordinate mares without foals. The high frequency of aggression associated with foals and nursing suggests that interference with reproduction of subordiantes is an important mode of competition between mares. Such interference may be common in animals that feed on dispersed resources and live in small, cohesive groups. |
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no |
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Call Number |
refbase @ user @ |
Serial |
755 |
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Author |
Janson, C.H. |
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Title |
Social correlates of individual spatial choice in foraging groups of brown capuchin monkeys, Cebus apella |
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Journal Article |
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Year |
1990 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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Volume |
40 |
Issue |
5 |
Pages |
910-921 |
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Abstract |
Individuals in a foraging group of wild bronwn capuchin monkeys choose different spatial positions relative to the rest of the group. Markov analysis of sequencess of individual spatial positions demonstrated significant differnces between individuals, which coul be categorized a posteriori into four homogenous subgroups. An individual's spatial position was related primarily to the amount of aggression it received from the group's dominant male, but also varied with its sex. Spatial choice varied with changes in an individual's social status, but did not vary consistently with seasonal differences in food availability. These results support the hypothesis that individuals compete for preferred spatial positions within a foraging group. |
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no |
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Call Number |
refbase @ user @ |
Serial |
773 |
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Author |
Janson, C.H. |
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Title |
Ecological consequences of individual spatial choice in foraging groups of brown capuchin monkeys, Cebus apella |
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Journal Article |
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Year |
1990 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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Volume |
40 |
Issue |
5 |
Pages |
922-934 |
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Abstract |
Individuals in a foraging group of brown capuchin monkeys choose different spatial positions relative to the rest of the group. An individual's choice of spatial positiion affects its foraging success and perceived predation risk (as measured by vigilance behaviour). The two most dominant group members preferred to forage where their expected forwaging success was greatest. Juveniles chose to forage where their perceived predation risk was least, not where they would achieve the highest foraging success. The positions used by non-dominant adults neither maximized foraging success nor minimized predation risk. It is likely that subordinate adults accept spatial positions with suboptimal ecological consequences to avoid the costs of frequent confrontations with the dominant members of the group over foraging sites in poreferred positions. |
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refbase @ user @ |
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774 |
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Author |
Thierry, B. |
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Title |
Feedback loop between kinship and dominance: the macaque model |
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Journal Article |
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Year |
1990 |
Publication |
Journal of Theoretical Biology |
Abbreviated Journal |
J. Theor. Biol. |
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Volume |
145 |
Issue |
4 |
Pages |
511-522 |
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Abstract |
There is growing evidence that macaque social systems represent sets of coadapted traits in which strength of hierarchies and degree of nepotism covary. A framework is developed to explain the link between dominance and kinship phenomena, assuming that power brought by alliances among non-kin is allometrically related to those involving relatives. This can account for the type of social relationships observed in “despotic” systems vs. “egalitarian” ones. When social bonds are mostly founded on kinship, lineages are closed and social power generated by coalitions among relatives may reach high levels; social power frequently outweighs the fighting abilities of single individuals, and asymmetry of dominance between group members may be marked. When lineages are more open, social bonds and alliances are less kin-biased, social relationships are more equal, and as the influence of coalitions is less important, the individual retains a certain degree of freedom in relation to the power of kin-networks. Acknowledging that the balance between individual and social power is not set at the same level across different species can explain a number of variations in rules of rank inheritance and relative dominance of males and females among macaques. The framework illustrates how epigenetic processes may shape complex features of primate social systems, and offers opportunities for testing. |
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refbase @ user @ |
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867 |
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