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Author Maddock, L.
Title The “migration” and grazing succession Type Book Chapter
Year 1995 Publication Serengeti: Dynamics of an Ecosystem Abbreviated Journal
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Abstract Editorial Reviews

Book Description

Originally published in 1979, Serengeti: Dynamics of an Ecosystem was immediately recognized as the first synthesis of the patterns and processes of a major ecosystem. A prototype for initial studies, Serengeti contains baseline data for further and comparative studies of ecosystems. The new Serengeti II builds on the information presented originally in Serengeti; both books together offer essential information and insights for ecology and conservation biology.
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Publisher University Of Chicago Press Place of Publication Chicago Editor Sinclair, A.R.E. ; Norton-Griffiths, A.R.E.
Language Summary Language Original Title Serengeti: Dynamics of an Ecosystem
Series Editor Series Title Abbreviated Series Title
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ISSN ISBN 978-0226760292 Medium
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 2343
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Author Gärdenfors P.
Title Cued and detached representations in animal cognition Type Journal Article
Year 1995 Publication Behavioural Processes Abbreviated Journal Behav. Process.
Volume 35 Issue Pages 263-273
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Notes Approved no
Call Number refbase @ user @ Serial 3454
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Author Beer C.G.
Title Trial and error in the evolution of cognition Type Journal Article
Year 1995 Publication Behavioural Processes Abbreviated Journal Behav. Process.
Volume 35 Issue Pages 215-224
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Notes Approved no
Call Number refbase @ user @ Serial 3455
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Author Houpt, K.A.
Title Learning in horses. Type Book Chapter
Year 1995 Publication The thinking horse. Abbreviated Journal
Volume Issue Pages 12-17
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Publisher Equine Research Centre Place of Publication Guelph, Canada Editor
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 3585
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Author Marinier, S.L.; Alexander, A.J.
Title Coprophagy as an avenue for foals of the domestic horse to learn food preferences from their dams Type Journal Article
Year 1995 Publication Journal of Theoretical Biology Abbreviated Journal J. Theor. Biol.
Volume 173 Issue 2 Pages 121-124
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Abstract Observation of foal development shows that the appearance of adult-type motor grazing behaviour, selection of grass vs. non-grass and the avoidance of poisonous plants occur concurrently between the ages of 4 and 6 weeks. Suckling behaviour and close association of foal with dam change with time but show no particular coincidence with grazing behavioural changes. Coprophagy of the foal on maternal faeces does, however, correspond chronologically with the foal learning to graze selectively. This correspondence suggests that, as well as other uses, in domestic horses coprophagy may function to imprint on the foal the food-selective values of its dam.
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Call Number Equine Behaviour @ team @ Serial 3626
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Author i Rios, J.F.; Houpt, K.
Title Sexual behavior in geldings Type Journal Article
Year 1995 Publication Applied Animal Behaviour Science Abbreviated Journal Appl. Anim. Behav. Sci.
Volume 46 Issue 1-2 Pages 133-135
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Abstract Abstract

In response to a request published in Equus, a magazine for those interested in horses, 85 owners of older geldings exhibiting sexual behavior completed history forms. The mean age of geldings was 16 f 5 years. Only 39 of the owners had had the gelding for at least a year before the behavior was noted. These cases could be used to determine the true age of onset of the problem. When log survivorship was used to determine whether there were one or two different populations, a break or change in the slope at age 16 indicated that there are two populations. One population shows the behavior from the time of castration and the other first exhibits the behavior in old age, possibly in response to an ACTH secreting pituitary adenoma. A total of 40% of the horses were Quarterhorses, the most numerous breed in the US; 78% of the horses were purebreds. Fewer than half the owners knew the age at which their horse had been castrated because they did not own the horse at the time.

The mean age at castration, when known, was 3.3 f 2.5 years. The reason for contacting us was sexual behavior (70%), aggression (24%). or some other problem ( 1 o/o). Whether or not aggression was the presenting problem, most of the horses showed aggression (95%), particularly towards other geldings (88%)) but also towards people (3 1%). Copulatory behavior (mounting) was shown by 69% of the geldings and half of those were able to intromit. These findings indicate that the sexual behavior of geldings is a problem for owners and that aggression usually accompanies sexual behavior.

The owners were encouraged to send serum samples taken before and after human chorionic gonadotropin (HCG) administration for testosterone and estrone sulfate analysis to determine whether residual testicular tissue was responsible for the horse’s behavior. Of the 14 horses tested, only one had elevated levels of testosterone indicating that there was residual testicular tissue. A total of six of the owners agreed to treat their horses with cyproheptadine at a dose of 8 mg day- ’ gradually increased to 88 mg day- ’ per horse. A total of three of the horses showed a decline in sexual and aggressive behavior, one got worse and two had side effects and treatment was withdrawn.
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Notes Approved yes
Call Number Equine Behaviour @ team @ Serial 3627
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Author de Vries, H.
Title An improved test of linearity in dominance hierarchies containing unknown or tied relationships Type Journal Article
Year 1995 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.
Volume 50 Issue 5 Pages 1375-1389
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Abstract Appleby (1983, Anim. Behav., 31, 600-608) described a statistical test, based on the work of Kendall (1962, Rank Correlation Methods), for the significance of linearity in dominance hierarchies. He suggested that unknown relationships should be assigned the value 1/2 and that subsequently the same test procedure can be used. In this paper it is shown that incorrect results are obtained by this method whenever there are unknown relationships. Values of the linearity index are systematically too low. P-values can be too high (underestimating the significance) or too low (overestimating), and seem to differ by not much more than a factor two (respectively a half) from the correct P-value. An improved method is developed for testing linearity in a set of dominance relationships containing unknown relationships. Furthermore, it is argued that, if one admits the possibility of tied dominance relationships, which should indeed be assigned the value 1/2, Landau's linearity index is to be preferred to Kendall's index. A randomization test is developed for assessing the significance of linearity or non-linearity in a set of dominance relationships containing unknown or tied relationships. The test statistic employed in this testing procedure is based on Landau's linearity index, but takes the unknown and tied relationships into account.
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 4284
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Author Kasuya,Eiiti
Title A randomization test for linearity of dominance hierarchies Type Journal Article
Year 1995 Publication Journal of Ethology Abbreviated Journal J. Ethol.
Volume 13 Issue 1 Pages 137-140
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 4288
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Author Miller, R.M.
Title How the dominance hierarchy is determined: The body language of the horse Type Journal Article
Year 1995 Publication Journal of Equine Veterinary Science Abbreviated Journal
Volume 15 Issue 12 Pages 514-515
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Call Number Equine Behaviour @ team @ Serial 4306
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Author Dey, S.
Title Trailer accidents Type Journal Article
Year 1995 Publication Journal of Equine Veterinary Science Abbreviated Journal
Volume 15 Issue 4 Pages 148-149
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 4662
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