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Author Thorne, J.B.; Goodwin, D.; Kennedy, M.J.; Davidson, H.P.B.; Harris, P. doi  openurl
  Title Foraging enrichment for individually housed horses: Practicality and effects on behaviour Type (up) Journal Article
  Year 2005 Publication Applied Animal Behaviour Science Abbreviated Journal Appl. Anim. Behav. Sci.  
  Volume 94 Issue 1-2 Pages 149-164  
  Keywords Horse; Foraging behaviour; Eating; Feeding; Enrichment; Welfare  
  Abstract The stabled (UK) or stalled (USA) horse is commonly fed a restricted-forage diet in contrast to the varied ad libitum high-fibre diet it evolved to consume. A low-forage diet has been linked to the performance of stereotypical behaviour and health problems including gastric ulceration and impaction colic (in cases where horses are bedded on straw). Provision of a diet closer to that which the horse is adapted to and which enables more natural feeding behaviour warrants investigation. This trial aimed to establish whether the behavioural effects observed in short-term trials when stabled horses were provided with a multiple forage diet persist over longer periods. It also aimed to develop a practical methodology for maintaining stabled horses under forage-enriched conditions. Nine horses (aged 5-20 years, various breeds), acting as their own controls, participated in an 18-day, cross-over, Latin Square designed trial, in which they received comparable weights of two dietary treatments: a Single Forage (SF, hay) diet and a Multiple Forage (MF) diet (three long-chop and three short-chop commercially available forages). Following a 2-day acclimatisation, horses were maintained on the forage treatments for 7 days. Horses were observed on alternate days, morning and afternoon, during the 25 min following forage presentation. Horses then crossed over onto their second treatment and, following a further 2 days' acclimatisation, the same protocol was followed for a further 7 days. Observations from video were made using The Observer 3.0(R) and SPPS (version 11). Horses on the MF treatment performed foraging behaviour significantly more frequently and for significantly longer periods than horses on the SF treatment. On the MF treatment horses sampled all forages during observations. However, there were significant differences in the frequency and duration of foraging on individual forages, indicating that horses demonstrated individual preferences for particular forages. Stereotypic weaving behaviour only occurred on the SF treatment. The results indicate that the potentially beneficial behavioural effects of short-term multiple forage provision do persist when horses are managed on a MF diet for a 7-day period. They suggest that a MF diet provides a means of enriching the stabled horse's environment, by offering variety and enabling patch foraging behaviour. The methodology proved practical for maintaining horses under forage-enriched conditions and could easily be adopted by horse owners to facilitate foraging behaviour.  
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  Call Number refbase @ user @ Serial 333  
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Author Clotfelter, E.D.; Paolino, A.D. url  doi
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  Title Bystanders to contests between conspecifics are primed for increased aggression in male fighting fish Type (up) Journal Article
  Year 2003 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.  
  Volume 66 Issue 2 Pages 343-347  
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  Abstract We performed two experiments in which we allowed a male fighting fish, Betta splendens, designated a bystander, to observe aggressive contests between pairs of male conspecifics. Another male (naive male) observed an empty tank or two nonaggressive males, depending on the experiment. Immediately after these observation periods, we allowed the bystander and naive male to interact in a neutral area. In both experiments, bystander males were dominant over naive males in a significant number of the encounters. Bystander males performed significantly more aggressive behaviours (displays, chases and bites) than did naive males. Differences in dominance were not due to chance differences in body size. These findings demonstrate that exposure to aggression between conspecifics increases aggressive motivation in bystander male fighting fish. We discuss briefly the implications of such social experience on the formation of dominance hierarchies. Copyright 2003 Published by Elsevier Ltd on behalf of The Association for the Study of Animal Behaviour.  
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  Call Number refbase @ user @ Serial 338  
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Author Cheney, D.L.; Seyfarth, R.M. doi  openurl
  Title Recognition of other individuals' social relationships by female baboons Type (up) Journal Article
  Year 1999 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.  
  Volume 58 Issue 1 Pages 67-75  
  Keywords  
  Abstract We describe a series of playback experiments designed to test whether free-ranging baboons, Papio cynocephalus ursinus, recognize the calls of other group members and also associate signallers with their close genetic relatives. Pairs of unrelated females were played sequences of calls that mimicked a fight between their relatives. As controls, the same females heard sequences that involved either (1) only the more dominant female's relative or (2) neither of the females' relatives. When call sequences involved their relatives, subjects looked towards the speaker for a longer duration than when the sequences involved nonkin. When the sequences involved the other female's relative, they also looked towards that female. Subjects did not look towards one another when call sequences involved nonkin. Dominant subjects were more likely to supplant their subordinate partners following playbacks of sequences that mimicked a dispute between their relatives than following the two control trials. In contrast, both subjects were more likely to approach one another and to interact in a friendly manner following the two control trials than following the test trial. Results indicate that female baboons recognize the screams and threat grunts not only of their own close relatives but also of unrelated individuals. They also replicate previous studies in suggesting that female monkeys recognize the close associates of other individuals and adjust their interactions with others according to recent events involving individuals other than themselves. Copyright 1999 The Association for the Study of Animal Behaviour.  
  Address Departments of Biology and Psychology, University of Pennsylvania  
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  ISSN 0003-3472 ISBN Medium  
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  Notes PMID:10413542 Approved no  
  Call Number refbase @ user @ Serial 346  
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Author Cheney, D.L.; Seyfarth, R.M. doi  openurl
  Title Reconciliatory grunts by dominant female baboons influence victims' behaviour Type (up) Journal Article
  Year 1997 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.  
  Volume 54 Issue 2 Pages 409-418  
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  Abstract Following aggressive interactions, dominant female baboons, Papio cynocephalus ursinusoccasionally grunt to their victims. To examine the effect of these apparently reconciliatory grunts on victims' subsequent behaviour, a series of playback experiments was designed to mimic reconciliation. Victims were played their opponents' grunts in the minutes immediately following a fight and then observed for half an hour. After hearing these grunts, victims approached their former opponents and also tolerated their opponents' approaches at significantly higher rates than they did under control conditions. They were also supplanted by their opponents at significantly lower rates. By contrast, playbacks of control females' grunts did not influence victims' behaviour. Playbacks of reconciliatory grunts did not increase the rate at which opponents approached or initiated friendly interactions with their former victims. Playbacks of reconciliatory grunts, therefore, appeared to influence victims', but not opponents', perception of recent events.  
  Address Departments of Biology and Psychology, University of Pennsylvania  
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  ISSN 0003-3472 ISBN Medium  
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  Notes PMID:9268473 Approved no  
  Call Number refbase @ user @ Serial 347  
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Author Shettleworth, S.J. doi  openurl
  Title Taking the best for learning Type (up) Journal Article
  Year 2005 Publication Behavioural processes Abbreviated Journal Behav. Process.  
  Volume 69 Issue 2 Pages 147-9; author reply 159-63  
  Keywords *Algorithms; Animals; *Behavior, Animal; Decision Making; Evolution; *Learning; *Models, Theoretical  
  Abstract Examples of how animals learn when multiple, sometimes redundant, cues are present provide further examples not considered by Hutchinson and Gigerenzer that seem to fit the principle of taking the best. “The best” may the most valid cue in the present circumstances; evolution may also produce species-specific biases to use the most functionally relevant cues.  
  Address Department of Psychology, University of Toronto, Toronto, Ont., Canada M5S 3G3. shettle@psych.utoronto.ca  
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  Series Volume Series Issue Edition  
  ISSN 0376-6357 ISBN Medium  
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  Notes PMID:15845301 Approved no  
  Call Number refbase @ user @ Serial 361  
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Author Gibson, B.M.; Shettleworth, S.J.; McDonald, R.J. openurl 
  Title Finding a goal on dry land and in the water: differential effects of disorientation on spatial learning Type (up) Journal Article
  Year 2001 Publication Behavioural brain research Abbreviated Journal Behav. Brain. Res.  
  Volume 123 Issue 1 Pages 103-111  
  Keywords Animals; Cues; Environment; Male; Maze Learning/*physiology; Orientation/*physiology; Rats; Rats, Long-Evans; Spatial Behavior/*physiology; Water  
  Abstract Two previous studies, Martin et al. (J. Exp. Psychol. Anim. Behav. Process. 23 (1997) 183) and Dudchenko et al. (J. Exp. Psychol. Anim. Behav. Process. 23 (1997) 194), report that, compared to non-disoriented controls, rats disoriented before testing were disrupted in their ability to learn the location of a goal on a dry radial-arm maze task, but that both groups learned at the same rate in the Morris water maze. However, the radial-arm maze task was much more difficult than the water maze. In the current set of experiments, we examined the performance of control and disoriented rats on more comparable dry land and water maze tasks. Compared to non-disoriented rats, rats that were disoriented before testing were significantly impaired in locating a goal in a circular dry arena, but not a water tank. The results constrain theoretical explanations for the differential effects of disorientation on different spatial tasks.  
  Address Department of Psychology, University of Toronto, 100 St. George Street, Toronto, Ontario, Canada M5S 3G3. gibson@psych.utoronto.ca  
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  ISSN 0166-4328 ISBN Medium  
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  Notes PMID:11377733 Approved no  
  Call Number refbase @ user @ Serial 372  
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Author Sara J. Shettleworth doi  openurl
  Title Female mate choice in swordtails and mollies: symmetry assessment or Weber's law? Type (up) Journal Article
  Year 1999 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.  
  Volume 58 Issue 5 Pages 1139-1142  
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  Address Department of Psychology, University of Toronto  
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  Series Volume Series Issue Edition  
  ISSN 0003-3472 ISBN Medium  
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  Notes PMID:10564618 Approved no  
  Call Number refbase @ user @ Serial 374  
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Author Mrosovsky, N.; Shettleworth, S.J. openurl 
  Title Further studies of the sea-finding mechanism in green turtle hatchlings Type (up) Journal Article
  Year 1974 Publication Behaviour Abbreviated Journal Behaviour  
  Volume 51 Issue 3-4 Pages 195-208  
  Keywords Animals; *Animals, Newborn/physiology; Contact Lenses; Locomotion; *Orientation; Retina/physiology; *Turtles/physiology; Visual Fields; *Visual Perception; Water  
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  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0005-7959 ISBN Medium  
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  Notes PMID:4447586 Approved no  
  Call Number refbase @ user @ Serial 389  
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Author Mrosovsky, N.; Shettleworth, S.J. openurl 
  Title Wavelength preferences and brightness cues in the water finding behaviour of sea turtles Type (up) Journal Article
  Year 1968 Publication Behaviour Abbreviated Journal Behaviour  
  Volume 32 Issue 4 Pages 211-257  
  Keywords Animals; *Behavior, Animal; *Color Perception; Cues; Light; *Turtles; Water  
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  ISSN 0005-7959 ISBN Medium  
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  Notes PMID:5717260 Approved no  
  Call Number refbase @ user @ Serial 391  
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Author Mendl, M. url  openurl
  Title Performing under pressure: stress and cognitive function Type (up) Journal Article
  Year 1999 Publication Applied Animal Behaviour Science Abbreviated Journal Appl. Anim. Behav. Sci.  
  Volume 65 Issue 3 Pages 221-244  
  Keywords Stress; Cognition; Attention; Learning; Memory; Welfare  
  Abstract The way in which cognitive functioning is affected by stressors is an important area of research for applied ethologists because stress caused by captive conditions may disrupt cognitive processes and lead to welfare and husbandry problems. Such problems may be minimised through an understanding of the links between stress and cognition. The effects of stress on cognitive function have been studied in disciplines ranging from human perceptual psychology to animal neuroscience. The aim of this paper is to provide an introduction to this research, focusing on the effects of stressors on attention, memory formation and memory recall. Findings from such a diverse literature with little apparent inter-disciplinary communication are inevitably complex and often contradictory. Nevertheless, some generalities do emerge. The idea that an inverted U-shaped relationship exists between an individual's state of stress or arousal and its ability to perform a cognitive task effectively, the so-called Yerkes-Dodson law, is commonly encountered. The law has limited explanatory value because it is unlikely that different stressors act on cognitive function via the same intervening, non-specific state. Furthermore, the law only provides a very general description of the relationship between stress and cognitive function. Empirical research on attention and memory processes reveals more specific findings. Stressors appear to cause shifts, lapses and narrowing of attention, and can also influence decision speed. These processes may be viewed as serving an adaptive role helping the animal to search for and scrutinise a source of danger. There is conflicting evidence as to whether hormones involved in the hypothalamic-pituitary-adrenal stress response play a part in these processes. These hormones and those involved in the sympathetic-adrenomedullary stress response do appear to play an important role in memory formation. Low or moderate concentrations of circulating glucocorticoids and catecholamines can enhance memory formation, while excessively high or prolonged elevations of these hormones can lead to memory disruption. The effects of stressors on memory recall are less clear. There is evidence for disruptive effects, and for facilitatory effects indicating state-dependent memory recall; events experienced under conditions of high arousal may be best recalled under similar conditions. Applied ethologists have the opportunity to extend work in this area, which often involves studies of single stressors/stress hormones acting in isolation and limited measures of cognitive function, by focusing on real-life husbandry stressors encountered by captive animals. This will yield fundamental information which also has direct relevance to animal welfare and management issues.  
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  Call Number refbase @ user @ Serial 393  
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