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Author |
Maynard Smith, J. |
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Title |
Evolution and the Theory of Games |
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Miscellaneous |
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1982 |
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Equine Behaviour @ team @ |
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4855 |
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Author |
Lobanov, N.V. |
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Title |
Askania-Nova, A 3rd Reservate in the USSR for the breeding of Equus hemionus kulan. |
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Journal Article |
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Year |
1982 |
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Zoologichesky Zhurnal |
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61 |
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12 |
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1856-1861 |
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Equine Behaviour @ team @ |
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2341 |
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Author |
Lenarz, M.S. |
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Title |
Habitat partitioning in feral horses: the value of being dominant |
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1982 |
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University of Chicago |
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Equine Behaviour @ team @ |
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2340 |
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Author |
Klingel, H. |
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Title |
Social organization of feral horses |
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Journal Article |
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Year |
1982 |
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Journal of Reproduction and Fertility. Supplement |
Abbreviated Journal |
J Reprod Fertil Suppl |
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32 |
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89-95 |
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Animals; Animals, Wild; Female; Horses/*physiology; Male; Sexual Behavior, Animal; *Social Behavior; Territoriality |
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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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0449-3087 |
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PMID:6962906 |
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refbase @ user @ |
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1958 |
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Author |
Klimov, V.; Orlov, V.M. |
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Title |
Current status and problems of conservation of Przewalski's horse (Equus przewalskii). |
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Journal Article |
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Year |
1982 |
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J. Zool., London |
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J. Zool., London |
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61 |
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12 |
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Equine Behaviour @ team @ |
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2329 |
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Author |
Keiper Rr, B.J. |
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Title |
Refuge – seeking and pest avoidance by feral horses in desert and island environments |
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Journal Article |
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Year |
1982 |
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App Anim Ethol |
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9 |
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111-120 |
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from Professor Hans Klingels Equine Reference List |
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1257 |
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Author |
KASEDA Y et al, |
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Title |
Sire – foal relationships between harem stallions and foals in Misaki horses |
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Journal Article |
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Year |
1982 |
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Jap J Zootech Sci |
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53 |
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822-830 |
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from Professor Hans Klingels Equine Reference List |
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1241 |
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Author |
Houpt, K.A.; Parsons, M.S.; Hintz, H.F. |
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Title |
Learning ability of orphan foals, of normal foals and of their mothers |
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Journal Article |
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Year |
1982 |
Publication |
Journal of animal science |
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J. Anim Sci. |
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55 |
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5 |
Pages |
1027-1032 |
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Age Factors; Animals; Body Weight; Dominance-Subordination; Female; Horses/*physiology; *Learning; *Maternal Deprivation; Mothers/*psychology |
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Abstract |
The maze learning ability of six pony foals that had been weaned at birth was compared to that of six foals reared normally. The foals' learning ability was also compared to their mothers' learning ability at the same task; the correct turn in a single choice point maze. The maze learning test was conducted when the foals were 6 to 8 mo old and after the mothered foals had been weaned. There was no significant difference between the ability of orphaned (weaned at birth) and mothered foals in their ability to learn to turn left (6 +/- .7 and 5.1 +/- .1 trials, respectively) or to learn the reversal, to turn right (6.7 +/- .6 and 6.2 +/- .6 trials, respectively). The orphan foals spent significantly more time in the maze in their first exposure to it than the mothered foals (184 +/- 42 vs 55 +/- 15 s. Mann Whitney U = 7, P less than .05). The mothers of the foals (n = 11) learned to turn left as rapidly as the foals (5.9 +/- .7 trials), but they were slower to learn to turn right (9.8 +/- 1.4 vs 6.4 +/- .4 trials, Mann Whitney U = 33, P less than .05), indicating that the younger horses learned more rapidly. There was no correlation between the trials to criteria of the mare and those of her foal, but there was a significant negative correlation between rank in trials to criteria and age (r = -65, P less than .05) when data from the mare and foal trials were combined. The dominance hierarchy of the mares was determined using a paired feeding test in which two horses competed for one bucket of feed. Although there was no correlation between rank in the hierarchy and maze learning ability, there was a correlation between body weight and rank in the hierarchy (r = .7, P less than .05). This may indicate either that heavier horses are likely to be dominant or that horses high in dominance gain more weight. Maternal deprivation did not appear to seriously retard learning of a simple maze by foals, although the orphans moved more slowly initially. The lack of maternal influence on learning is also reflected in the lack of correlation between the mare's learning ability and that of her foal. Young horses appear to learn more rapidly than older horses. |
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0021-8812 |
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PMID:7174546 |
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refbase @ user @ |
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58 |
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Author |
Houpt, K.A.; Keiper, R. |
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The position of the stallion in the equine dominance hierarchy of feral and domestic ponies. |
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Journal Article |
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Year |
1982 |
Publication |
Journal of Animal Science |
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J. Anim Sci |
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54 |
Issue |
5 |
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945-950 |
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refbase @ user @ |
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668 |
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Author |
Hinson, R.E. |
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Title |
Effects of UCS preexposure on excitatory and inhibitory rabbit eyelid conditioning: an associative effect of conditioned contextual stimuli |
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Journal Article |
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Year |
1982 |
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Journal of Experimental Psychology. Animal Behavior Processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
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8 |
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1 |
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49-61 |
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Animals; Association Learning; Cognition; *Conditioning, Eyelid; *Inhibition (Psychology); Practice (Psychology); Rabbits; Reaction Time |
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Preconditioning experience with the unconditional stimulus (UCS) retards subsequent excitatory conditioning. Three experiments demonstrated that this UCS retardation effect is attenuated by associative manipulations of contextual stimuli of the UCS preexposure environment. The UCS retardation effect was reduced by (a) altering contextual stimuli between preexposure and conditioning (Experiment 1), (b) latently inhibiting contextual stimuli prior to UCS preexposure (Experiment 2), and (c) extinguishing contextual stimuli subsequent to UCS preexposure (Experiment 3). Although UCS preexposure retarded excitatory conditioning, the results of Experiment 4 demonstrated that UCS preexposure facilitated inhibitory conditioning. These results indicate that an association between contextual stimuli and the preexposed UCS contributes to the effects of preconditioning UCS experience on subsequent learning. |
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0097-7403 |
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PMID:7057144 |
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Equine Behaviour @ team @ |
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2787 |
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