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Author Subiaul, F.; Vonk, J.; Okamoto-Barth, S.; Barth, J.
Title Do chimpanzees learn reputation by observation? Evidence from direct and indirect experience with generous and selfish strangers Type Journal Article
Year 2008 Publication Animal Cognition Abbreviated Journal Anim. Cogn.
Volume 11 Issue (down) 4 Pages 611-623
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Abstract Abstract  Can chimpanzees learn the reputation of strangers indirectly by observation? Or are such stable behavioral attributions made exclusively by first-person interactions? To address this question, we let seven chimpanzees observe unfamiliar humans either consistently give (generous donor) or refuse to give (selfish donor) food to a familiar human recipient (Experiments 1 and 2) and a conspecific (Experiment 3). While chimpanzees did not initially prefer to beg for food from the generous donor (Experiment 1), after continued opportunities to observe the same behavioral exchanges, four chimpanzees developed a preference for gesturing to the generous donor (Experiment 2), and transferred this preference to novel unfamiliar donor pairs, significantly preferring to beg from the novel generous donors on the first opportunity to do so. In Experiment 3, four chimpanzees observed novel selfish and generous acts directed toward other chimpanzees by human experimenters. During the first half of testing, three chimpanzees exhibited a preference for the novel generous donor on the first trial. These results demonstrate that chimpanzees can infer the reputation of strangers by eavesdropping on third-party interactions.
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Call Number Equine Behaviour @ team @ Serial 4837
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Author Dacke, M.; Srinivasan, M.
Title Evidence for counting in insects Type Journal Article
Year 2008 Publication Animal Cognition Abbreviated Journal Anim. Cogn.
Volume 11 Issue (down) 4 Pages 683-689
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Abstract Abstract  Here we investigate the counting ability in honeybees by training them to receive a food reward after they have passed a specific number of landmarks. The distance to the food reward is varied frequently and randomly, whilst keeping the number of intervening landmarks constant. Thus, the bees cannot identify the food reward in terms of its distance from the hive. We find that bees can count up to four objects, when they are encountered sequentially during flight. Furthermore, bees trained in this way are able count novel objects, which they have never previously encountered, thus demonstrating that they are capable of object-independent counting. A further experiment reveals that the counting ability that the bees display in our experiments is primarily sequential in nature. It appears that bees can navigate to food sources by maintaining a running count of prominent landmarks that are passed en route, provided this number does not exceed four.
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 4938
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Author Sueur, C.; Petit, O.
Title Organization of Group Members at Departure Is Driven by Social Structure in Macaca Type Journal Article
Year 2008 Publication International Journal of Primatology Abbreviated Journal Int. J. Primatol.
Volume 29 Issue (down) 4 Pages 1085-1098
Keywords dominance – kinship – Macaca tonkeana – M. mulatta – network metrics – order – movement
Abstract Abstract  Researchers have often explained order of progression of group members during joint movement in terms of the influence of ecological pressures but rarely that of social constraints. We studied the order of joining by group members to a movement in semifree-ranging macaques with contrasting social systems: 1 group of Tonkean macaques (Macaca tonkeana) and 1 group of rhesus macaques (M. mulatta). We used network metrics to understand roles and associations among individuals. The way the macaques joined a movement reflected the social differences between the species in terms of dominance and kinship. Old and dominant male rhesus macaques were more often at the front of the movement, contrary to the Tonkean macaques, which exhibited no specific order. Moreover, rhesus macaques preferred to join high-ranking or related individuals, whereas Tonkean macaques based associations during joining mostly on sexual relationships with a subgroup of peripheral males.
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5125
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Author Krapp, A.; Bachmann I.; Troxler, J.
Title Das Liegeverhalten von Pferden in Gruppenhaltung Type Conference Article
Year 2008 Publication Schweizer Archiv für Tierheilkunde Abbreviated Journal
Volume 150 Issue (down) 4 Pages 186-187
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Abstract Erarbeitung eines Lösungsansatzes zur Optimierung

des eingeschränkten Liegeverhaltens rangniedriger

Pferde in Gruppenhaltung
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Notes Das Liegeverhalten von Pferden in Gruppenhaltung 2008.pdf Approved no
Call Number Equine Behaviour @ team @ Serial 5306
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Author Siegel, J.M.
Title Do all animals sleep? Type Journal Article
Year 2008 Publication Trends in Neurosciences Abbreviated Journal
Volume 31 Issue (down) 4 Pages 208-213
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Abstract Some animals never exhibit a state that meets the behavioral definition of sleep. Others suspend or greatly reduce ‘sleep’ behavior for many weeks during the postpartum period or during seasonal migrations without any consequent ‘sleep debt.’ Rats die from one form of sleep deprivation, but sleep loss has not been shown to cause death in well-controlled studies in other vertebrate species. Some marine mammal species do not show evidence for REM sleep, and convincing evidence for this state in reptiles, fish and insects is lacking. The enormous variation in the nature of rest and sleep states across the animal kingdom and within the mammalian class has important implications for understanding the evolution and functions of sleep.
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ISSN 0166-2236 ISBN Medium
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5613
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Author Baumgartner, T.; Heinrichs, M.; Vonlanthen, A.; Fischbacher, U.; Fehr, E.
Title Oxytocin Shapes the Neural Circuitry of Trust and Trust Adaptation in Humans Type Abstract
Year 2008 Publication Neuron Abbreviated Journal Neuron
Volume 58 Issue (down) 4 Pages 639-650
Keywords Sysneuro; Sysbio
Abstract Trust and betrayal of trust are ubiquitous in human societies. Recent behavioral evidence shows that the neuropeptide oxytocin increases trust among humans, thus offering a unique chance of gaining a deeper understanding of the neural mechanisms underlying trust and the adaptation to breach of trust. We examined the neural circuitry of trusting behavior by combining the intranasal, double-blind, administration of oxytocin with fMRI. We find that subjects in the oxytocin group show no change in their trusting behavior after they learned that their trust had been breached several times while subjects receiving placebo decrease their trust. This difference in trust adaptation is associated with a specific reduction in activation in the amygdala, the midbrain regions, and the dorsal striatum in subjects receiving oxytocin, suggesting that neural systems mediating fear processing (amygdala and midbrain regions) and behavioral adaptations to feedback information (dorsal striatum) modulate oxytocin's effect on trust. These findings may help to develop deeper insights into mental disorders such as social phobia and autism, which are characterized by persistent fear or avoidance of social interactions.
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Publisher Cell Press, Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0896-6273 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number Equine Behaviour @ team @ S0896-6273(08)00327-9 DOI - 10.1016/j.neuron.2008.04.009 Serial 5647
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Author Amant, R. St.; Horton, T.E.
Title Revisiting the definition of animal tool use Type Journal Article
Year 2008 Publication Animal Behaviour Abbreviated Journal Anim. Behav.
Volume 75 Issue (down) 4 Pages 1199-1208
Keywords cognition; tool use
Abstract Benjamin Beck's definition of tool use has served the field of animal cognition well for over 25 years (Beck 1980, Animal Tool Behavior: the Use and Manufacture of Tools, New York, Garland STPM). This article proposes a new, more explanatory definition that accounts for tool use in terms of two complementary subcategories of behaviours: behaviours aimed at altering a target object by mechanical means and behaviours that mediate the flow of information between the tool user and the environment or other organisms in the environment. The conceptual foundation and implications of the new definition are contrasted with those of existing definitions, particularly Beck's. The new definition is informally evaluated with respect to a set of scenarios that highlights differences from Beck's definition as well as those of others in the literature.
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ISSN 0003-3472 ISBN Medium
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5861
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Author Boogert, N.J.; Reader, S.M.; Hoppitt, W.; Laland, K.N.
Title The origin and spread of innovations in starlings Type Journal Article
Year 2008 Publication Animal Behaviour Abbreviated Journal Anim. Behav.
Volume 75 Issue (down) 4 Pages 1509-1518
Keywords diffusion dynamics; dominance; foraging; group; innovation; neophobia; social learning; social network; starling; Sturnus vulgaris
Abstract There are numerous reports of novel learned behaviour patterns in animal populations, yet the factors influencing the invention and spread of these innovations remain poorly understood. Here we investigated to what extent the pattern of spread of innovations in captive groups of starlings, Sturnus vulgaris, could be predicted by knowledge of individual and social group variables, including association patterns, social rank orders, measures of neophobia and asocial learning performance. We presented small groups of starlings with a series of novel extractive foraging tasks and recorded the latency for each bird to contact and solve each task, as well as the orders of contacting and solving. We then explored which variables best predicted the observed diffusion patterns. Object neophobia and social rank measures characterized who was the first of the group to contact the novel foraging tasks, and the subsequent spread of contacting tasks was associated with latency to feed in a novel environment. Asocial learning performance, measured in isolation, predicted who was the first solver of the novel foraging tasks in each group. Association patterns did not predict the spread of solving. Contact latency and solving duration were negatively correlated, consistent with social learning underlying the spread of solving. Our findings indicate that we can improve our understanding of the diffusion dynamics of innovations in animal groups by investigating group-dependent and individual variables in combination. We introduce novel methods for exploring predictors of the origin and spread of behavioural innovations that could be widely applied.
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ISSN 0003-3472 ISBN Medium
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 6036
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Author Innes, L.; McBride, S.
Title Negative versus positive reinforcement: An evaluation of training strategies for rehabilitated horses Type Journal Article
Year 2008 Publication Applied Animal Behaviour Science Abbreviated Journal Appl. Anim. Behav. Sci.
Volume 112 Issue (down) 3–4 Pages 357-368
Keywords Horse; Training; Positive reinforcement; Negative reinforcement; Stress; Rehabilitation
Abstract Rescued equids are often exposed to rehabilitation and training (or retraining) programmes to improve their physical and psychological well-being as well as to facilitate the re-homing process. Training uses either positive or negative reinforcement learning procedures and it is considered here that, there may be welfare implications associated with using the latter technique as it has the potential to overlay acute stress on animals with a chronic stress life history. The aim of this study, therefore, was to compare these training strategies (negative versus positive reinforcement) on equine behaviour and physiology as the first step in establishing an optimal rehabilitation approach (from a welfare perspective) for equids that have been subjected to chronic stress in the form of long-term neglect/cruelty. Over a 7-week period, 16 ponies (aged 6–18 months) were trained using either positive (‘positive’) (n = 8) or negative reinforcement (‘negative’) (n = 8) techniques to lead in hand, stand to be groomed, traverse an obstacle course and load into a trailer. Heart rate was measured (5 s intervals) on days 1 and 4 of each training week, ‘Pre’- (1 h), ‘During’ (0.5 h) and ‘Post’- (1 h) training session. Ethograms (10.00–20.00 h) outside of the training period were also compiled twice weekly. In addition, weekly arena tests (as a measure of reactivity) were also performed 1 week before and during the 7 weeks of training. Results showed significant differences between the two training schedules for some measures during the latter stages of the trial and suggested that animals trained under a positive reinforcement schedule were more motivated to participate in the training sessions and exhibited more exploratory or ‘trial and error’ type behaviours in novel situations/environments. In this context, the incorporation of positive reinforcement schedules within a rehabilitation programme may be of benefit to the animal from a welfare perspective.
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ISSN 0168-1591 ISBN Medium
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5644
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Author Begall, S.; Cervený, J.; Neef, J.; Vojtech, O.; Burda, H.
Title Magnetic alignment in grazing and resting cattle and deer Type Journal Article
Year 2008 Publication Proceedings of the National Academy of Sciences of the United States of America Abbreviated Journal Proc. Natl. Acad. Sci. U.S.A.
Volume 105 Issue (down) 36 Pages 13451-13455
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Abstract We demonstrate by means of simple, noninvasive methods (analysis of satellite images, field observations, and measuring “deer beds” in snow) that domestic cattle (n = 8,510 in 308 pastures) across the globe, and grazing and resting red and roe deer (n = 2,974 at 241 localities), align their body axes in roughly a north–south direction. Direct observations of roe deer revealed that animals orient their heads northward when grazing or resting. Amazingly, this ubiquitous phenomenon does not seem to have been noticed by herdsmen, ranchers, or hunters. Because wind and light conditions could be excluded as a common denominator determining the body axis orientation, magnetic alignment is the most parsimonious explanation. To test the hypothesis that cattle orient their body axes along the field lines of the Earth's magnetic field, we analyzed the body orientation of cattle from localities with high magnetic declination. Here, magnetic north was a better predictor than geographic north. This study reveals the magnetic alignment in large mammals based on statistically sufficient sample sizes. Our findings open horizons for the study of magnetoreception in general and are of potential significance for applied ethology (husbandry, animal welfare). They challenge neuroscientists and biophysics to explain the proximate mechanisms.
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Notes 10.1073/pnas.0803650105 Approved no
Call Number Equine Behaviour @ team @ Serial 5316
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