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Author |
Araba, B.D.; Crowell-Davis, S.L. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Dominance relationships and aggression of foals (Equus caballus) |
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Journal Article |
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Year |
1994 |
Publication |
Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
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41 |
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1-2 |
Pages |
1-25 |
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aggression; dominance; horse; Equus caballus |
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Studied a herd of 15 Belgian brood-mares and 10 foals. Specific aspects of social structure studied were dominance-subordinance relationships, preferred associates, social spacing, aggression rates, the frequency of aggressions administered down the dominance hierarchy, and interactive play bouts. The rank order of the foals, both before and after weaning, was positively correlated with the rank order of their dams. There was also a significant relationship between a foal's rank and its total aggression or aggression rate per subordinate post-weaning. Higher ranking foals had higher rates of aggression. Over 80% of threats were directed down the dominance hierachy. The play-rank order of the foals, scored by the number of times foal left a play bout, was not significantly correlated with the rank order as scored by agonistic interactions. -from Authors |
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Dept Anatomy and Radiology, Univ of Georgia, Athens, GA, USA |
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01681591 (Issn) |
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790 |
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Author |
Chase, I.D.; Bartolomeo, C.; Dugatkin, L.A. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Aggressive interactions and inter-contest interval: how long do winners keep winning? |
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Journal Article |
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Year |
1994 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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48 |
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2 |
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393-400 |
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Abstract. Considerable evidence across many taxa demonstrates that prior social experience affects the outcome of subsequent aggressive interactions. Although the 'loser effect', in which an individual losing one encounter is likely to lose the next, is relatively well understood, studies of the 'winner effect', in which winning one encounter increases the probability of winning the next, have produced mixed results. Earlier studies differ concerning whether a winner effect exists, and if it does, how long it lasts. The variation in results, however, may arise from different inter-contest intervals and procedures for selecting contestants employed across previous studies. These methodological differences are addressed through a series of experiments using randomly selected winners and three different inter-contest intervals in the pumpkinseed sunfish, Lepomis gibbosus. The results indicate that a winner effect does in fact exist in pumpkinseed sunfish, but that it only lasts between 15 and 60 min. Based on these results, predictions about the behavioural dynamics of hierarchy formation are discussed, and it is suggested that it may be impossible, in principle, to predict the outcome of dominance interactions between some individuals before they are actually assembled to form a group. Finally, the possible mechanisms underlying the winner effect are explored. |
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873 |
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Author |
Zeeb, K. |
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Title |
[Possibilities for the all-year free-range raising of horses] |
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Year |
1994 |
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DTW. Deutsche Tierarztliche Wochenschrift |
Abbreviated Journal |
Dtsch Tierarztl Wochenschr |
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101 |
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3 |
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122-123 |
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Animal Feed; *Animal Husbandry; Animal Welfare; Animals; Germany; Horses/*physiology; Housing, Animal; Seasons; Weather |
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The ethological concept concerning supply of needs an avoidance of damage is mentioned as a possibility for the evaluation of welfare aspects related to animal management. The 250 Dulmen horses kept on 300 ha by the Duke of Croy show what must be provided for horse-keeping in a semi-natural environment: Sufficient food and water, efficient shelter as well as adequate structures for the needs of horses concerning social and comfort behaviour. A catalogue of factors, functions and facilities for this kind of horse-keeping is presented. |
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Tierhygienischen Institut, Freiburg, Breisgau |
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German |
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Moglichkeiten der ganzjahrigen Freilandhaltung von Pferden |
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0341-6593 |
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PMID:8205954 |
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refbase @ user @ |
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1941 |
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Author |
Bekoff, M. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Cognitive Ethology and the Treatment of Non-Human Animals: How Mati'ers of Mind Inform Mati'ers of Welfare |
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Journal Article |
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Year |
1994 |
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Animal Welfare |
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3 |
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75-96 |
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refbase @ user @ |
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3457 |
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Author |
Wasserman, S.; Faust, K. |
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Title |
Social Network Analysis : Methods and Applications |
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Book Whole |
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Year |
1994 |
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Cambridge University Press |
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Cambridge |
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Equine Behaviour @ team @ Wasserman1994 |
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5150 |
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Author |
Fritts, S.H.; Bangs, E.E.; Gore, J.F. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
The relationship of wolf recovery to habitat conservation and biodiversity in the northwestern United States |
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Journal Article |
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Year |
1994 |
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Landsc Urban Plan |
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28 |
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Equine Behaviour @ team @ Fritts1994 |
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6453 |
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Ishida, N.; Hirano, T.; Mukoyama, H. |
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Detection of aberrant alleles in the D-loop region of equine mitochondrial DNA by single-strand conformation polymorphism (SSCP) analysis |
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Journal Article |
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Year |
1994 |
Publication |
Animal Genetics |
Abbreviated Journal |
Anim Genet |
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25 |
Issue |
4 |
Pages |
287 |
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*Alleles; Animals; Base Sequence; *DNA, Mitochondrial; DNA, Single-Stranded/genetics; Female; Gene Frequency; Genomic Imprinting; Horses/*genetics; Male; Molecular Sequence Data; Pedigree; *Polymorphism, Genetic |
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Laboratory of Molecular and Cellular Biology, Japan Racing Association, Tokyo |
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0268-9146 |
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PMID:7985852 |
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Equine Behaviour @ team @ |
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2213 |
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Author |
Witter, M.S.; Swaddle, J.P. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Fluctuating Asymmetries, Competition and Dominance |
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Journal Article |
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Year |
1994 |
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Proceedings of the Royal Society B: Biological Sciences |
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Proc. Roy. Soc. Lond. B Biol. Sci. |
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256 |
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1347 |
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299-303 |
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Levels of fluctuating asymmetry (FA) in the primary feathers of European starlings, Sturnus vulgaris, have been shown to be sensitive to nutritional and energetic stress. Furthermore, between-individual variation in plumage FA has been found to be related to social dominance, even without social interactions during feather growth, with dominant birds exhibiting the highest levels of FA. Here we examine whether the relation between dominance and FA differs when birds are housed in social groups, under different degrees of competition for food, during moult. We reason that dominants should derive a greater benefit from their social status as competition for food increases. Our results support this proposition. The relation between dominance and FA differed significantly according to the degree of competition for food. However, in no cases did the dominants exhibit lower levels of FA than subdominants. When competition for food was low, dominants had higher levels of FA than subdominants. When competition for food was high, there was no systematic relation between dominance and FA. These results suggest that dominants may only derive a net benefit from their social status, under the circumstances of our experiment, during severe conditions of competition. |
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Equine Behaviour @ team @ |
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2203 |
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Author |
Bauer, I. E.; McMorrow, J. Yalden,; D. W. |
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Title |
The Historic Ranges of Three Equid Species in North-East Africa: A Quantitative Comparison of Environmental Tolerances |
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Journal Article |
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1994 |
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Journal of Biogeography |
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J Biogeogr |
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21 |
Issue |
2 |
Pages |
169-182 |
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The historic ranges of three equid species native to north-east Africa are analysed with respect to annual rainfall, several temperature parameters and a satellite-derived multispectral index of primary productivity. Equus africanus Fitzinger, Equus grevyi Oustalet and Equus burchelli Gray used to largely replace each other, geographically, with narrow zones of range overlap occurring between E. africanus and E. grevyi in the Awash valley, and between E. grevyi and E. burchelli in southern Ethiopia and northern Kenya. The three species are shown to succeed each other along an environmental gradient. The position of each species on this gradient and the resulting location and extent of its range are discussed. Competitive exclusion, specific adaptations and historic events are likely determinants of equid distribution. In the area of sympatry between E. grevyi and E. burchelli, mixed habitat characters as well as environmental fluctuations seem to prevent either species from excluding the other. Different social organizations of E. grevyi and E. burchelli and the resulting migratory patterns may be adaptations to the environment in their allopatric ranges; in their sympatric range they could alleviate competition. |
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Call Number ![sorted by Call Number field, descending order (down)](img/sort_desc.gif) |
Equine Behaviour @ team @ |
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2222 |
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Author |
Breen, M.; Downs, P.; Irvin, Z.; Bell, K. |
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Title |
Intrageneric amplification of horse microsatellite markers with emphasis on the Przewalski's horse (E. przewalskii) |
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Journal Article |
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Year |
1994 |
Publication |
Animal Genetics |
Abbreviated Journal |
Anim Genet |
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25 |
Issue |
6 |
Pages |
401-405 |
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Animals; DNA, Satellite/*genetics; *Gene Amplification; Gene Frequency; *Genetic Markers; Heterozygote; Horses/*genetics; Species Specificity |
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Primer sequences flanking 13 microsatellite loci isolated from the domestic horse (E. caballus) were successfully used to amplify homologous loci in the Przewalski's horse (E. przewalskii). The results demonstrate that the level of polymorphism at all 13 loci in the Przewalski's horse was comparable to that in the domestic horse and the overall exclusion probability in the Przewalski's horse was calculated to be 0.9994. The results suggest that it should be possible to use E. caballus-derived microsatellite markers to provide parentage verification and additional valuable information to the captive management of E. przewalskii. The ability to amplify corresponding loci in the remaining five species of the genus was also confirmed, illustrating the general application of markers isolated from the domestic horse to the evaluation of polymorphism in the other six species of the genus. |
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Australian Equine Blood Typing Research Laboratory, University of Queensland, St Lucia |
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0268-9146 |
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PMID:7695120 |
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Equine Behaviour @ team @ |
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2246 |
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