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Author Mayes, E.; Duncan, P.
Title Temporal patterns of feeding behaviour in free-ranging horses Type Journal Article
Year 1986 Publication Behavior Abbreviated Journal (up) Behav.
Volume 96 Issue Pages 105-129
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 2351
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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 (up) 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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Call Number Equine Behaviour @ team @ Serial 4285
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Author Barette, C.; Vandal, D.
Title Social rank, dominance, antler size, and access to food in snow-bound wild woodland caribou Type Journal Article
Year 1986 Publication Behaviour Abbreviated Journal (up) Behaviour
Volume 97 Issue 1-2 Pages 118-146
Keywords Canada; Quebec; Artiodactyla; Social dominance; Feeding behavior; Morphology; Antler; Rangifer tarandus; North America; America; Ungulata; Mammalia; Vertebrata
Abstract We spent two winters studying the social behaviour of wild woodland caribou (Rangifer tarandus caribou) at a time when their main food (ground lichens; Cladina sp.) is available only at snow craters dug by the animals. The competition for access to such craters was severe, the animals constantly trying to take over the craters of others. During a two-month period when a group maintained a constant size (20) and composition (all age-sex classes represented), we could rank the animals in a rather linear dominance hierarchy (Landau's index = 0.87). Rank was correlated with access to resources, percent of time spent active, and percent of time feeding in craters. It was also correlated with age and antler size. However, rank is not an attribute of individuals, but of a relationship between individuals. As such it is only an intervening variable between physical attributes and access to resources, a variable whose value has meaning only within a given group. Among the three attributes studied (age, sex, antler size), the latter was by far the best predictor of the occurrence and outcome of interactions. Between two individuals within any of the three age-sex classes studied (adult and yearling males and adult females), the one with larger antlers initiated significantly more often, escalated its aggression (to the point of hitting the target) less often, and enjoyed a higher success rate in obtaining resources. When their antlers were larger than those of an adult male target (i.e. males that had shed their antlers), adult females won almost all their interactions with adult males even though they escalated only one fourth of them. This clarifies the long-standing speculation that female caribou have antlers and shed them later than males, in order to overcome their sexual handicap in competition for food in the winter. We conclude that the link between rank and dominance of an individual on one hand, and some of its attributes on the other (e.g. sex, age, weight, antler size) is fundamentally realized by the animal itself through its active preference for targets it is likely to beat, i.e. targets with smaller antlers.
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Call Number Equine Behaviour @ team @ Serial 4269
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Author GRAHAM A et al,
Title An aerial survey of horses and other karge animals in Alice Springs and Gulf regions Type Journal Article
Year 1986 Publication Abbreviated Journal (up) Cons Comm North Terr Alice Springs Techn Rep
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Notes from Professor Hans Klingels Equine Reference List Approved no
Call Number Serial 1123
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Author Schäfer M,
Title Beobachtungen zum Verhalten des südiberischen Primitivpferdes Type
Year 1986 Publication Abbreviated Journal (up) Diss. München
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Notes from Professor Hans Klingels Equine Reference List Approved no
Call Number Serial 1562
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Author Hertsch, B.; Becker, C.
Title [Occurrence of aseptic necrosis of the palmar and plantar ligament in the horse--a contribution to the differentiation of sesamoid bone diseases] Type Journal Article
Year 1986 Publication DTW. Deutsche tierarztliche Wochenschrift Abbreviated Journal (up) Dtsch Tierarztl Wochenschr
Volume 93 Issue 6 Pages 263-266
Keywords Animals; Diagnosis, Differential; Horse Diseases/*pathology; Horses; Ligaments, Articular/*pathology; Osteonecrosis/*pathology; Sesamoid Bones/*pathology
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Language German Summary Language Original Title Zum Vorkommen der aseptischen Nekrose im Ligamentum palmare bzw. plantare beim Pferd--ein Beitrag zur Differenzierung der Gleichbeinerkrankungen
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ISSN 0341-6593 ISBN Medium
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Notes PMID:3527654 Approved no
Call Number refbase @ user @ Serial 150
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Author Rubenstein, D. I.,
Title Ecology and sociality in horses and zebras Type Book Chapter
Year 1986 Publication Ecological Aspects of Social Evolution Abbreviated Journal (up) Ecological Aspects of Social Evolution
Volume Issue Pages 282-302
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Publisher Princeton University Press Place of Publication Princeton, NJ. Editor Rubenstein, D. I. ; Wrangham, R. W.
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Notes from Professor Hans Klingels Equine Reference List Approved no
Call Number Serial 1526
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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 (up) Ecology
Volume 67 Issue 2 Pages 377-385
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Notes doi: 10.2307/1938580 Approved no
Call Number Equine Behaviour @ team @ Serial 5141
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Author McDonnell S,
Title Reproductive behavior of the stallion Vet Clin North Am Type Journal Article
Year 1986 Publication Abbreviated Journal (up) Equine Practice
Volume 2 Issue Pages 535-555
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Notes from Professor Hans Klingels Equine Reference List Approved no
Call Number Serial 1377
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Author YALDEN DW et al,
Title Catalogue of the mammals of Ethiopia 6; II. order Perissodactyla; A Type Journal Article
Year 1986 Publication Abbreviated Journal (up) Family Equidae Monitore Zool italiano Suppl
Volume 21 Issue Pages 35-41
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Notes from Professor Hans Klingels Equine Reference List Approved no
Call Number Serial 1726
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