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Author |
Cheney DL; Seyfarth RM |
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Title |
Characterizing the mind of another species |
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Year |
1992 |
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Behav. Brain Sci. |
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15 |
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172 |
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Equine Behaviour @ team @ |
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2988 |
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Author |
Lin AC; Bard KA; Anderson JR |
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Title |
Development of self-recognition and self-conscious emotions |
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Journal Article |
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Year |
1992 |
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Child Dev. |
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106 |
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120 |
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Equine Behaviour @ team @ |
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3016 |
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Author |
Povinelli DJ; deBlois S |
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Title |
Young children's understanding of knowledge information in themselves and others |
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Year |
1992 |
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J. Comp. Psychol. |
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106 |
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228 |
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Equine Behaviour @ team @ |
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3028 |
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Author |
Povinelli DJ; Nelson KE; Boysen ST |
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Title |
Comprehension of role reversal in chimpanzees: evidence of empathy? |
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Year |
1992 |
Publication |
Animal Behaviour. |
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Anim. Behav. |
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43 |
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633 |
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Equine Behaviour @ team @ |
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3031 |
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Author |
Dugatkin, L.A. |
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Title |
Tendency to inspect predators predicts mortality risk in the guppy (Poecilia reticulata) |
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Journal Article |
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Year |
1992 |
Publication |
Behavioral Ecology |
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Behav. Ecol. |
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Volume |
3 |
Issue |
2 |
Pages |
124-127 |
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Although predator inspection behavior in fishes has become a model system for examining game theoretical strategies such as Tit for Tat, the direct costs of inspection behavior have not been quantified. To begin quantifying such costs, I conducted an experiment that examined mortality due to predation as a function of predator inspection in the guppy (Poecilia reticulata). Before being subjected to a “survivorship” experiment, guppies were assayed for their tendency to inspect a predator. Groups were then composed of six guppies that differed in their tendency to inspect. These groups were placed into a pool containing a predator, and survivorship of guppies with different inspection tendencies was noted 36 and 60 h later. Results indicate that individuals that display high degrees of inspection behavior suffer greater mortality than their noninspecting shoalmates. |
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10.1093/beheco/3.2.124 |
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refbase @ user @ |
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526 |
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Author |
Keiper, R.; Receveur, H. |
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Title |
Social interactions of free-ranging Przewalski horses in semi-reserves in the Netherlands |
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Journal Article |
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Year |
1992 |
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Applied Animal Behaviour Science |
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Appl. Anim. Behav. Sci. |
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33 |
Issue |
4 |
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303-318 |
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Social interactions were recorded in two bands of free-ranging Przewalski horses living on large (greater than 30 ha) pastures in the Netherlands. The average number of aggressive interactions per hour was 8.86 at Lelystad and 10.36 at Noorderheide. The most common aggressive interactions were lower intensity, lower cost displacements (17.2% of all aggressive acts at Lelystad, 13.2% at Noorderheide), threats to bite (42.3% and 40.7%, respectively) and threats to kick (15.4% and 23.9%, respectively). Analysis of aggression revealed that a clear, linear dominance hierarchy was present in each band. For each band there was a positive and highly significant correlation between the age of a horse and its rank in the hierarchy. In each band, the stallion was not the highest ranked horse. Non-agonistic behaviors exceeded the number of agonistic interactions (1253 vs. 558 for Lelystad; 1257 vs. 995 at Noorderheide). There was a negative correlation between the rank of a horse in the dominance hierarchy and the number of non-agonistic behaviors displayed. The group displaying the highest number of non-agonistic interactions were foals (48.9% of total non-agonistic behaviors at Lelystad; 51.1% at Noorderheide). The non-agonistic/agonistic ratio was greater than 1 for yearlings and the band stallion, as was also the case for foals, but was less than 1 for males. |
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refbase @ user @ |
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778 |
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Author |
Duncan P, |
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Title |
Zebras, asses, and horses |
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Book Whole |
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1992 |
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Kelvyn Press USA |
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Provides summaries of the conservation status, biology, and ecology of wild zebras, asses, and horses. The Action Plan presents chapters on taxonomy, genetics, reproductive biology, population dynamics, management, disease and epidemiology, and the importance of developing an assessment methodology that considers the role of equids in ecosystems. |
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Kelvyn Press |
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Broadview, Illinois |
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978-2831700564 |
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from Professor Hans Klingels Equine Reference List JA - |
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yes |
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1032 |
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Author |
Elzenga, J. W, |
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Title |
Why zebras are striped |
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Journal Article |
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Year |
1992 |
Publication |
Swara |
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Swara |
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Volume |
15 |
Issue |
4 |
Pages |
28-30 |
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from Professor Hans Klingels Equine Reference List |
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yes |
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1068 |
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Author |
Winkler A, |
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Title |
The feeding ecology of the Cape Mountain zebra in the Mountain Zebra National Park |
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1992 |
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Doctoral thesis |
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from Professor Hans Klingels Equine Reference List |
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yes |
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1713 |
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Kabuga, J.D. |
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Title |
Social relationships in N'dama cattle during supplementary feeding |
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Year |
1992 |
Publication |
Applied Animal Behaviour Science |
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Appl. Anim. Behav. Sci. |
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34 |
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4 |
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285-290 |
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Social relationships of 30 N'dama cows during supplementary feeding, post-grazing, were studied over a period of 1.5 years. Dominance ranks determined during idling and feeding periods were strongly correlated (Spearman's rank correlation (rs = 0.964, P < 0.01). The number of animals dominated by a cow during feeding was strongly (P < 0.01) related to liveweight (r = 0.822) and age (r = 0.755). Low status cows ate less frequently than medium and high status animals, while middle ranking cows were ejected more frequently from the feed trough than other dominance groups. Animals had preferences in the use of feed troughs, with social rank being the dominant factor determining the location of feed trough space used. Cows of similar status were generally preferred feeding and movement neighbours and antagonists. However, the dominance rank of an animal and its preferred neighbour during idling were not significantly correlated (rs = 0.220, P > 0.05). Voluntary leadership ranks into and out of the pen were, respectively, related closely (P < 0.01) to feeding dominance ranks (rs = 0.661, 0.640) and idling dominance ranks (rs = 0.621, 0.669). |
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Equine Behaviour @ team @ room B 3.029 |
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2033 |
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