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Author Pedersen, E.J.; Kurzban, R.; McCullough, M.E.
Title Do humans really punish altruistically? A closer look Type Journal Article
Year 2013 Publication Proceedings of the Royal Society B: Biological Sciences Abbreviated Journal Proc. R. Soc. Lond. B
Volume 280 Issue (down) 1758 Pages
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Abstract Some researchers have proposed that natural selection has given rise in humans to one or more adaptations for altruistically punishing on behalf of other individuals who have been treated unfairly, even when the punisher has no chance of benefiting via reciprocity or benefits to kin. However, empirical support for the altruistic punishment hypothesis depends on results from experiments that are vulnerable to potentially important experimental artefacts. Here, we searched for evidence of altruistic punishment in an experiment that precluded these artefacts. In so doing, we found that victims of unfairness punished transgressors, whereas witnesses of unfairness did not. Furthermore, witnesses’ emotional reactions to unfairness were characterized by envy of the unfair individual's selfish gains rather than by moralistic anger towards the unfair behaviour. In a second experiment run independently in two separate samples, we found that previous evidence for altruistic punishment plausibly resulted from affective forecasting error—that is, limitations on humans’ abilities to accurately simulate how they would feel in hypothetical situations. Together, these findings suggest that the case for altruistic punishment in humans—a view that has gained increasing attention in the biological and social sciences—has been overstated.
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Call Number Equine Behaviour @ team @ Serial 5804
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Author Mann Janet; Patterson Eric M.
Title Tool use by aquatic animals Type Journal Article
Year 2013 Publication Philosophical Transactions of the Royal Society B: Biological Sciences Abbreviated Journal Phil. Trans. Biol. Sci.
Volume 368 Issue (down) 1630 Pages 20120424
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Publisher Royal Society Place of Publication Editor
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Notes doi: 10.1098/rstb.2012.0424 Approved no
Call Number Equine Behaviour @ team @ Serial 6579
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Author Fuchs, K.; Götz, K.; Manschel, K.; Pohl, L.; Preisendanz, L.; Weil, S.; Weiß, V.; Wittum, J.; Krueger, K.
Title Vergleich der Interaktionen von Pferden in Boxenhaltung mit Weidegang und Pferden in Offenstallhaltung Type Conference Article
Year 2013 Publication Göttinger Pferdetage’13 Abbreviated Journal
Volume Issue (down) 13 Pages 65
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ISSN ISBN 978-3-88542-782-7 Medium
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5948
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Author Ruess, M.; Schmelz, A.; Krueger, K.
Title Einfluss vitomechanischer Schwingungen auf das Muskuloskeletalsystem der Pferde Type Conference Article
Year 2013 Publication Göttinger Pferdetage’13 Abbreviated Journal
Volume Issue (down) 13 Pages 111
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ISSN ISBN 978-3-88542-782-7 Medium
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5949
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Author Lerbs, S.; Raue, T.; Krueger, K
Title Untersuchung der natürlichen Schiefe der Fohlen in Abhängigkeit zur sensorischen und motorischen Lateralität, sowie zur Seitenpräferenz beim Saugen Type Conference Article
Year 2013 Publication Göttinger Pferdetage’13 Abbreviated Journal
Volume Issue (down) 13 Pages
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ISSN ISBN 978-3-88542-782-7 Medium
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5950
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Author Kampmann, S.; Hampson, B.A.; Pollitt, C.C.
Title Population dynamics of feral horses (Equus caballus) following above-average rainfall in a semi-arid environment of Australia Type Journal Article
Year 2013 Publication Australian Veterinary Journal Abbreviated Journal Aust Vet J
Volume 91 Issue (down) 11 Pages 482-487
Keywords animal welfare; ecology; horses; reproduction; wildlife
Abstract Background Recent record rainfall in much of semi-arid Central Australia is the most likely reason for a feral horse population increase in excess of normal. Uncontrolled numbers of feral horses have habitat degradation and animal welfare implications. Objectives The aims of this study were to investigate the social structure of feral horses and assess their population growth rate following unseasonably high rainfall. Methods The study area was 4000 km2 of unmanaged, semi-arid country in Central Australia (latitude 24.50°S, longitude 132.10°E). Horses were identified by descriptive features from ground searches, movement-activated cameras and ‘hides’ positioned at key water holes. Wherever possible, sex and age categories were documented. Population growth rate was estimated by the number of foals divided by the number of horses older than 1 year in the observed population. Results A total of 1424 horses were identified and categorised, of which 335 were foals born within the current year. Only 123 juveniles were identified. Of the adult horses, 53.4% were male and 46.6% were female and this differed from parity (P = 0.04). Of the mares, 71.9% had a foal at foot and the population growth rate was 29.5%. Conclusions With a sustained population growth rate of 29.5%, this population of feral horses will more than double within 3 years. The high population increase will likely have a detrimental effect on native fauna and flora and the fragile, semi-arid ecosystems of Central Australia. After a period of high rainfall and plentiful resources, ‘normal’ drought conditions will return and many feral horses will starve and die as they compete for limited resources.
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ISSN 1751-0813 ISBN Medium
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5747
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Author Freidin, E.; Putrino, N.; D’Orazio, M.; Bentosela, M.
Title Dogs’ Eavesdropping from People’s Reactions in Third Party Interactions Type Journal Article
Year 2013 Publication PLoS ONE Abbreviated Journal PLoS ONE
Volume 8 Issue (down) 11 Pages e79198 EP -
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Abstract <p>Eavesdropping involves the acquisition of information from third-party interactions, and can serve to indirectly attribute reputation to individuals. There is evidence on eavesdropping in dogs, indicating that they can develop a preference for people based on their cooperativeness towards others. In this study, we tested dogs’ eavesdropping abilities one step further. In a first experiment, dogs could choose between cooperative demonstrators (the donors) who always gave food to an approaching third person (the beggar); here, the only difference between donors was whether they received positive or negative reactions from the beggar (through verbal and gestural means). Results showed that dogs preferentially approached the donor who had received positive reactions from the beggar. By contrast, two different conditions showed that neither the beggar’s body gestures nor the verbal component of the interaction on their own were sufficient to affect the dogs’ preferences. We also ran two further experiments to test for the possibility of dogs’ choices being driven by local enhancement. When the donors switched places before the choice, dogs chose at random. Similarly, in a nonsocial condition in which donors were replaced by platforms, subjects chose at chance levels. We conclude that dogs’ nonrandom choices in the present protocol relied on the simultaneous presence of multiple cues, such as the place where donors stood and several features of the beggar’s behavior (gestural and verbal reactions, and eating behavior). Nonetheless, we did not find conclusive evidence that dogs discriminated the donors by their physical features, which is a prerequisite of reputation attribution.</p>
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Publisher Public Library of Science Place of Publication Editor
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5807
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Author Briefer Freymond, S.; Briefer, E.F.; Niederhäusern, R.V.; Bachmann, I.
Title Pattern of Social Interactions after Group Integration: A Possibility to Keep Stallions in Group Type Journal Article
Year 2013 Publication PLoS ONE Abbreviated Journal PLoS ONE
Volume 8 Issue (down) 1 Pages e54688 EP -
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Abstract <p>Horses are often kept in individual stables, rather than in outdoor groups, despite such housing system fulfilling many of their welfare needs, such as the access to social partners. Keeping domestic stallions in outdoor groups would mimic bachelor bands that are found in the wild. Unfortunately, the high level of aggression that unfamiliar stallions display when they first <italic>encounter each other</italic> discourages owners from keeping them in groups. However, this level of aggression is likely to be particularly important only during group integration, when the dominance hierarchy is being established, whereas relatively low aggression rates have been observed among stable feral bachelor bands. We investigated the possibility of housing breeding stallions owned by the Swiss National Stud in groups on a large pasture (5 stallions in 2009 and 8 stallions in 2010). We studied the pattern of agonistic, ritual and affiliative interactions after group integration (17–23 days), and the factors influencing these interactions (time after group integration, dominance rank, age or experience of group housing). We found that stallions displayed generally more ritual than agonistic and than affiliative interactions. The frequency of agonistic and ritual interactions decreased quickly within the first three to four days. The frequency of affiliative interactions increased slowly with time before decreasing after 9–14 days. A stable hierarchy could be measured after 2–3 months. The highest-ranking males had less ritual interactions than the lowest-ranking. Males had also less agonistic, ritual and affiliative interactions if they had already been housed in a group the previous year. Therefore, we found that breeding stallions could be housed together on a large pasture, because the frequency of agonistic interactions decreased quickly and remained at a minimal level from the fourth day following group integration. This housing system could potentially increase horse welfare and reduce labour associated with horse management.</p>
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Publisher Public Library of Science Place of Publication Editor
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5656
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Author Begall, S.; Malkemper, E.P.; Cervený, J.; Nemec, P.; Burda, H.
Title Magnetic alignment in mammals and other animals Type Journal Article
Year 2013 Publication Mammalian Biology – Zeitschrift für Säugetierkunde Abbreviated Journal Mamm. Biol.
Volume 78 Issue (down) 1 Pages 10-20
Keywords Cattle; Deer; Fox; Horse; Magnetoreception
Abstract Magnetic alignment (MA) constitutes the simplest directional response to the geomagnetic field. In contrast to magnetic compass orientation, MA is not goal directed and represents a spontaneous, fixed directional response. Because animals tend to align their bodies along or perpendicular to the magnetic field lines, MA typically leads to bimodal or quadrimodal orientation, although there is also growing evidence for a fixed unimodal orientation not necessarily coinciding with the magnetic cardinal directions. MA has been demonstrated in diverse animals including insects, amphibians, fish, and mammals. Alignment can be expressed by animals during resting as well as on the move (e.g. while grazing, hunting, feeding, etc.). Here, we briefly survey characteristic features and classical examples of MA and review the current knowledge about the occurrence of MA in mammals. In addition, we summarize what is known about mechanisms underlying MA and discuss its prospective biological functions. Finally, we highlight some physiological effects of alignment along the magnetic field axes reported in humans. We argue that the phenomenon of MA adds a new paradigm that can be exploited for investigation of magnetoreception in mammals.
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ISSN 1616-5047 ISBN Medium
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5678
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Author Larsson, M.
Title The optic chiasm: a turning point in the evolution of eye/hand coordination Type Journal Article
Year 2013 Publication Frontiers in Zoology Abbreviated Journal Front. Zool.
Volume 10 Issue (down) 1 Pages 41
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Abstract The primate visual system has a uniquely high proportion of ipsilateral retinal projections, retinal ganglial cells that do not cross the midline in the optic chiasm. The general assumption is that this developed due to the selective advantage of accurate depth perception through stereopsis. Here, the hypothesis that the need for accurate eye-forelimb coordination substantially influenced the evolution of the primate visual system is presented. Evolutionary processes may change the direction of retinal ganglial cells. Crossing, or non-crossing, in the optic chiasm determines which hemisphere receives visual feedback in reaching tasks. Each hemisphere receives little tactile and proprioceptive information about the ipsilateral hand. The eye-forelimb hypothesis proposes that abundant ipsilateral retinal projections developed in the primate brain to synthesize, in a single hemisphere, visual, tactile, proprioceptive, and motor information about a given hand, and that this improved eye-hand coordination and optimized the size of the brain. If accurate eye-hand coordination was a major factor in the evolution of stereopsis, stereopsis is likely to be highly developed for activity in the area where the hands most often operate.The primate visual system is ideally suited for tasks within arm's length and in the inferior visual field, where most manual activity takes place. Altering of ocular dominance in reaching tasks, reduced cross-modal cuing effects when arms are crossed, response of neurons in the primary motor cortex to viewed actions of a hand, multimodal neuron response to tactile as well as visual events, and extensive use of multimodal sensory information in reaching maneuvers support the premise that benefits of accurate limb control influenced the evolution of the primate visual system. The eye-forelimb hypothesis implies that evolutionary change toward hemidecussation in the optic chiasm provided parsimonious neural pathways in animals developing frontal vision and visually guided forelimbs, and also suggests a new perspective on vision convergence in prey and predatory animals.
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ISSN 1742-9994 ISBN Medium
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5685
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