Records |
Author |
Nelissen, M.H.J. |
Title |
The effect of tied rank numbers on the linearity of dominance hierarchies |
Type |
Journal Article |
Year |
1986 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
Volume |
12 |
Issue |
2 |
Pages |
159-168 |
Keywords |
dominance hierarchy, linearity, Landau's index, despotism |
Abstract |
The occurence of tied rank numbers in dominance hierarchies is discussed, especially its effect on the linearity of the hierarchy. This linearity is measured with Landau's index, that is calculated for several hierarchies with tied ranks on one, two of three levels. Linearity is mostly affected by ties in small groups with many ties. A distinction is made between a hierarchy of individuals and hierarchical levels. The phenomenon of despotism is called an extreme case of tied ranks. It is proposed to regard hierarchies with a linearity in a continuous scale. |
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Equine Behaviour @ team @ |
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4285 |
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Author |
Springorum B. |
Title |
Hinweise zum Konditionstraining der Military-Pferde |
Type |
Book Whole |
Year |
1986 |
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FN-Verlag |
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Warendorf |
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3 88542 167 4 |
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no |
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Equine Behaviour @ team @ |
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4439 |
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Author |
Cheney, D.L.; Seyfarth, R.M. |
Title |
The recognition of social alliances among vervet monkeys |
Type |
Journal Article |
Year |
1986 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
Volume |
34 |
Issue |
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Pages |
1722-1731 |
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Equine Behaviour @ team @ |
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4864 |
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Author |
Lima, S.L. |
Title |
Predation Risk and Unpredictable Feeding Conditions: Determinants of Body Mass in Birds |
Type |
Journal Article |
Year |
1986 |
Publication |
Ecology |
Abbreviated Journal |
Ecology |
Volume |
67 |
Issue |
2 |
Pages |
377-385 |
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doi: 10.2307/1938580 |
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Equine Behaviour @ team @ |
Serial |
5141 |
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Author |
Gittleman, J.L. |
Title |
Carnivore Life History Patterns: Allometric, Phylogenetic, and Ecological Associations |
Type |
Journal Article |
Year |
1986 |
Publication |
The American Naturalist |
Abbreviated Journal |
Am Nat |
Volume |
127 |
Issue |
6 |
Pages |
744-771 |
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The University of Chicago Press for The American Society of Naturalists |
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0003-0147 |
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Equine Behaviour @ team @ |
Serial |
5453 |
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Author |
Giraldeau, L.-A.; Lefebvre, L. |
Title |
Exchangeable producer and scrounger roles in a captive flock of feral pigeons: a case for the skill pool effect |
Type |
Journal Article |
Year |
1986 |
Publication |
Animal Behaviour |
Abbreviated Journal |
Anim. Behav. |
Volume |
34 |
Issue |
3 |
Pages |
797-803 |
Keywords |
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Abstract |
We investigated the foraging producer-scrounger system of a captive flock of feral pigeons (Columba livia) by monitoring the number of food patches each individual produced. In one experiment, three different patch types were tested on the whole flock while, in a second, flock composition was varied for one patch type. In all cases we found non-uniform distributions of the number of patches produced per individual, which suggests the existence of producer and scrounger roles. This result could not be explained by either dominance or variability in individual learning ability. Individuals switched roles in response to changes both in food patch type and flock composition. These results are discussed in light of the skill pool hypothesis, which suggests that, in a group, different foraging specialists will profit by parasitizing each other's food discoveries. |
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0003-3472 |
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Equine Behaviour @ team @ |
Serial |
6012 |
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Author |
Blakeman, N.E.; Friend, T.H. |
Title |
Visual discrimination at varying distances in Spanish goats |
Type |
Journal Article |
Year |
1986 |
Publication |
Appl Anim Behav Sci |
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Volume |
16 |
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Equine Behaviour @ team @ Blakeman1986 |
Serial |
6251 |
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Author |
Crowell-Davis, S.L. |
Title |
Spatial relations between mares and foals of the Welsh pony (Equus caballus) |
Type |
Journal Article |
Year |
1986 |
Publication |
Animal Behaviour |
Abbreviated Journal |
Anim Beh |
Volume |
34 |
Issue |
4 |
Pages |
1007-1015 |
Keywords |
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Abstract |
Welsh pony mares and foals (Equus caballus) were usually found to be within 1 or 5 m of each other during the first week of the foal's life and gradually spent more time at greater distances as the foals became older. There was an overall levelling of the trend during the 9th-15th weeks of life of the foal, followed by a second period of change during weeks 16-24. Through weeks 21-24, mares and foals spent at least half of their time within 5 m of each other. Proximity was primarily due to foal activity except during foal recumbency. During the first 8 weeks of the foal's life, a mare remained close by when it was recumbent, either by grazing in a circle around it or by standing upright beside it. Mares and foals were most likely to be close together when they were resting upright with the other ponies in the herd and most likely to be far apart when the foal was playing. Similarities in patterns of spatial relationship between the foals of a given mare were demonstrated. There was no difference between colts and filies in the development of independence. |
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0003-3472 |
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Equine Behaviour @ team @ |
Serial |
6505 |
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Author |
Cox Je, |
Title |
Behaviour of the false rig: Causes and treatments |
Type |
Journal Article |
Year |
1986 |
Publication |
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Abbreviated Journal |
Vet Record |
Volume |
118 |
Issue |
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Pages |
353-356 |
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from Professor Hans Klingels Equine Reference List |
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no |
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Serial |
995 |
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Author |
Eisenmann V, |
Title |
Comparative osteology of modern and fossil horses, half-asses and asses |
Type |
Book Chapter |
Year |
1986 |
Publication |
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Abbreviated Journal |
In: Equids in the ancient world |
Volume |
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Pages |
67-116 |
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from Professor Hans Klingels Equine Reference List |
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Serial |
1057 |
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