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Author Doré,F.Y.; Fiset,S.; Goulet,S.; Dumans,M.-C.; Gagnon,S.
Title Search behavior in cats and dogs Interspecific differences in working memory and spatial cognition Type Journal Article
Year 1996 Publication Animal Learning & Behavior Abbreviated Journal Anim Learn. & Behav.
Volume 24 Issue 2 Pages 142-149
Keywords (up)
Abstract Cats and dogs search behavior was compared in different problems where an object was visibly

moved behind a screen that was then visibly moved to a new position. In Experiments 1 (cats) and 2 (dogs),

one group was tested with identical screens and the other group was tested with dissimilar screens.

Results showed that in both species, search behavior was based on processing of spatial information

rather than on recognition of the visual features of the target screen. Cats and dogs were unable to find

the object by inferring its invisible movement. They reached a high level of success only if there was

direct perceptual evidence that the object could not be at its initial position. When the position change

was indicated by an indirect cue, cats searched more at the object`s initial than final position, whereas

dogs searched equally at both positions. Interspecific similarities and differences are interpreted in

terms of the requirements for resetting working memory.
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Call Number refbase @ user @ Serial 537
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Author Ord, T.J.; Peters, R.A.; Evans, C.S.; Taylor, A.J.
Title Digital video playback and visual communication in lizards Type Journal Article
Year 2002 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.
Volume 63 Issue 5 Pages 879-890
Keywords (up)
Abstract Experimental analyses of dynamic visual signals have to overcome the technical obstacle of reproducing complex motor patterns such as those found in courtship and threat displays. Video playback offers a potential solution to this problem, but it has recently been criticized because of sensory differences between humans and nonhuman animals, which suggest that video stimuli might be perceived as deficient relative to live conspecifics. Quantitative comparisons are therefore necessary to determine whether video sequences reliably evoke natural responses. Male Jacky dragons, Amphibolurus muricatus, compete for territories using complex displays delivered in a rapid stereotyped sequence. We evaluated video playback as a technique for studying this visual signal. Digital video sequences depicting a life-sized displaying male were indistinguishable from live male conspecifics in the rate and structure of aggressive displays evoked. Other measures of social behaviour suggested that video stimuli were more effective in this context. Lizards produced significantly more appeasement displays and had higher rates of substrate licking and locomotor activity in response to video playback than to confined male opponents, which failed to produce aggressive displays. Lizards tracked temporal changes in the display rate of video stimuli and were also sensitive to individual differences in morphology and behaviour between video exemplars. These results show that video stimuli are appropriate for the experimental analysis of Jacky dragon aggressive displays. We compare the potential shortcomings of video playback with those of other techniques and conclude that no approach offers a panacea, but that several have complementary characteristics. Copyright 2002 The Association for the Study of Animal Behaviour. Published by Elsevier Science Ltd. All rights reserved.
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Call Number refbase @ user @ Serial 540
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Author Lachmann M.; Bergstrom C.T.
Title Signalling among Relatives II. Beyond the Tower of Babel Type Journal Article
Year 1998 Publication Theoretical Population Biology Abbreviated Journal Theor. Pop. Biol.
Volume 54 Issue 2 Pages 146-160
Keywords (up)
Abstract Models of costly signalling are commonly employed in evolutionary biology in order to explain how honest communication between individuals with conflicting interests can be stable. These models have focused primarily on a single type of honest signalling equilibrium, the separating equilibrium in which any two different signallers send distinct signals, thereby providing signal receivers with complete information. In this paper, we demonstrate that in signalling among relatives (modelled using the Sir Philip Sidney game), there is not one but a large number of possible signalling equilibria, most of which are pooling equilibria in which different types of signallers may share a common signal. We prove that in a general Sir Philip Sidney game, any partition of signallers into equi-signalling classes can have a stable signalling equilibrium if and only if it is a contiguous partition, and provide examples of such partitions. A similar (but slightly stricter) condition is shown to hold when signals are transmitted through a medium with signalling error. These results suggest a solution to a problem faced by previous signalling theory models: when we consider the separating equilibrium, signal cost is independent of the frequency of individuals sending that signal and, consequently, even very rare signaller types can drastically affect signal cost. Here, we show that by allowing these rare signallers to pool with more common signallers, signal cost can be greatly reduced. Copyright 1998 Academic Press.
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Language English Summary Language Original Title
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Call Number refbase @ user @ Serial 560
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Author Heyes, C.M.
Title Imitation and flattery: a reply to Byrne & Tomasello Type Journal Article
Year 1995 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.
Volume 50 Issue 5 Pages 1421-1424
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Call Number refbase @ user @ Serial 593
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Author Allen, C.
Title Transitive inference in animals: Reasoning or conditioned associations? Type Book Chapter
Year 2006 Publication Rational Animals? Abbreviated Journal
Volume Issue Pages 175-186
Keywords (up)
Abstract It is widely accepted that many species of nonhuman animals appear to engage in transitive inference,

producing appropriate responses to novel pairings of non-adjacent members of an ordered series

without previous experience of these pairings. Some researchers have taken this capability as

providing direct evidence that these animals reason. Others resist such declarations, favouring instead

explanations in terms of associative conditioning. Associative accounts of transitive inference have

been refined in application to a simple 5-element learning task that is the main paradigm for

laboratory investigations of the phenomenon, but it remains unclear how well those accounts

generalise to more information-rich environments such as social hierarchies which may contain scores

of individuals, and where rapid learning is important. The case of transitive inference is an example of

a more general dispute between proponents of associative accounts and advocates of more cognitive

accounts of animal behaviour. Examination of the specific details of transitive inference suggests

some lessons for the wider debate.
Address Texas A&M University
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Publisher Oxford University Press Place of Publication Oxford Editor Hurley, S.; Nudds, M.
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ISSN ISBN 978-0-19-852827-2 Medium
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Call Number refbase @ user @ Serial 611
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Author Hall, C.
Title The impact of visual perception on equine learning Type Journal Article
Year 2007 Publication Behavioural Processes Abbreviated Journal Behav. Process.
Volume 76 Issue Pages 29-33
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Call Number refbase @ user @ Serial 619
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Author McCall, C.A.
Title Making equine learning research applicable to training procedures Type Journal Article
Year 2007 Publication Behavioural Processes Abbreviated Journal Behav. Process.
Volume 76 Issue 1 Pages 27-28
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Call Number refbase @ user @ Serial 623
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Author Hothersall, B.; Nicol, C.
Title Equine learning behaviour: accounting for ecological constraints and relationships with humans in experimental design Type Journal Article
Year 2007 Publication Behavioural Processes Abbreviated Journal Behav. Process.
Volume 76 Issue 1 Pages 45-48
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Call Number refbase @ user @ Serial 632
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Author ANDREWS, R.C.
Title The mongolian wild ass Type Journal Article
Year 1933 Publication Natural History Abbreviated Journal Natural History
Volume 33 Issue Pages 3-16
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Notes from Prof. Hans Klingels Equine Reference List Approved no
Call Number refbase @ user @ Serial 640
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Author Nicol, C.J.; Pope, S.J.
Title The effects of demonstrator social status and prior foraging success on social learning in laying hens Type Journal Article
Year 1999 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.
Volume 57 Issue 1 Pages 163-171
Keywords (up)
Abstract Opportunities for social learning within a group of animals are likely to be influenced by the social dynamics of that group. Some individuals may be more influential demonstrators than others even when there are no differences in their skill level or performance. In this study of domestic hens,Gallus gallus domesticus, differences in demonstrator salience were examined. From 24 separate flocks we selected as demonstrators a dominant cockerel, a dominant hen, a mid-ranking hen or a subordinate hen. Demonstrators were pretrained to perform an operant discrimination task to obtain food. Six observers from each flock individually watched the demonstrator perform the task for four 5-min sessions held on consecutive days. On the fifth day observers were tested individually in the operant chamber. We analysed data from 19 flocks, where there were no quantitative differences in demonstrator performance. Observer hens of relatively high social status performed more correct operant pecks than observer hens of relatively low social status. Demonstrator category also had a significant effect on subsequent observer behaviour. Hens that had observed cockerels performed very few general pecks or operant pecks. Hens that had observed dominant hens performed more operant pecks, but hens that had observed sub-ordinate hens performed more general pecks in the chamber. The results suggested either that there was an interaction between dominance and gender in demonstrator salience or that dominant hens might have been influential because of some factor imperfectly associated with their dominance status. A possible candidate was the foraging ability of the dominant hens. In a second experiment using the same protocol, we manipulated the prior foraging success of dominant hens from four additional flocks but this had no significant effect on their subsequent influence as demonstrators.
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Call Number refbase @ user @ Serial 715
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