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Author Dugnol, B.; Fernández, C.; Galiano, G.; Velasco, J. url  doi
openurl 
  Title Implementation of a diffusive differential reassignment method for signal enhancement: An application to wolf population counting Type Journal Article
  Year (up) 2007 Publication Appl Math Comput Abbreviated Journal  
  Volume 193 Issue Pages  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Dugnol2007 Serial 6465  
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Author Palacios, V.; Font, E.; Marquez, R. url  doi
openurl 
  Title Iberian wolf howls: acoustic structure, individual variation, and a comparison with North American populations Type Journal Article
  Year (up) 2007 Publication J Mammal Abbreviated Journal  
  Volume 88 Issue Pages  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Palacios2007 Serial 6469  
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Author Bonin, S.J.; Clayton, H.M.; Lanovaz, J.L.; Johnston, T. url  doi
openurl 
  Title Comparison of mandibular motion in horses chewing hay and pellets Type Journal Article
  Year (up) 2007 Publication Equine Veterinary Journal Abbreviated Journal Equine Vet. J.  
  Volume 39 Issue 3 Pages 258-262  
  Keywords horse; temporomandibular joint; mastication; kinematics  
  Abstract Summary Reasons for performing study: Previous studies have suggested that temporomandibular joint (TMJ) kinematics depend on the type of food being masticated, but accurate measurements of TMJ motion in horses chewing different feeds have not been published. Hypothesis: The temporomandibular joint has a larger range of motion when horses chew hay compared to pellets. Methods: An optical motion capture system was used to track skin markers on the skull and mandible of 7 horses as they chewed hay and pellets. A virtual marker was created on the midline between the mandibles at the level of the 4th premolar teeth to represent the overall motion of the mandible relative to the skull during the chewing cycle. Results: Frequency of the chewing cycles was lower for hay than for pellets. Excursions of the virtual mandibular marker were significantly larger in all 3 directions when chewing hay compared to pellets. The mean velocity of the virtual mandibular marker during the chewing cycle was the same when chewing the 2 feeds. Conclusions: The range of mediolateral displacement of the mandible was sufficient to give full occlusal contact of the upper and lower dental arcades when chewing hay but not when chewing pellets. Potential relevance: These findings support the suggestion that horses receiving a diet high in concentrate feeds may require more frequent dental prophylactic examinations and treatments to avoid the development of dental irregularities associated with smaller mandibular excursions during chewing.  
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  Publisher American Medical Association (AMA) Place of Publication Editor  
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  ISSN 0425-1644 ISBN Medium  
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  Notes doi: 10.2746/042516407X157792 Approved no  
  Call Number Equine Behaviour @ team @ Serial 6513  
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Author Giraldeau, L.-A.; Lefebvre, L.; Morand-Ferron, J. url  doi
openurl 
  Title Can a restrictive definition lead to biases and tautologies? Type Journal Article
  Year (up) 2007 Publication Behavioral and Brain Sciences Abbreviated Journal Behav. Brain Sci.  
  Volume 30 Issue 4 Pages 411-412  
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  Abstract We argue that the operational definition proposed by Ramsey et al. does not represent a significant improvement for students of innovation, because it is so restrictive that it might actually prevent the testing of hypotheses on the relationships between innovation, ecology, evolution, culture, and intelligence. To avoid tautological thinking, we need to use an operational definition that is taxonomically unbiased and neutral with respect to the hypotheses to be tested.  
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  Publisher Cambridge University Press Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition 2007/12/17  
  ISSN 0140-525x ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 6533  
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Author Wotschikowsky, U. openurl 
  Title Wölfe und Jäger in der Oberlausitz Type Journal Article
  Year (up) 2007 Publication Broschüre, Freundeskreis freilebender Wölfe Abbreviated Journal  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 6691  
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Author Versace, E.; Morgante, M.; Pulina, G.; Vallortigara, G. url  doi
openurl 
  Title Behavioural lateralization in sheep (Ovis aries) Type Journal Article
  Year (up) 2007 Publication Behavioural Brain Research Abbreviated Journal Behav. Brain. Res.  
  Volume 184 Issue 1 Pages 72-80  
  Keywords Lateralization; Laterality; Brain asymmetry; Hemisphere; Sheep; Lamb; Strength of lateralization  
  Abstract This study investigates behavioural lateralization in sheep and lambs of different ages. A flock was tested in a task in which the animals were facing an obstacle and should avoid it on either the right or left side to rejoin flock-mates (adult sheep) or their mothers (lambs). A bias for avoiding the obstacle on the right side was observed, with lambs apparently being more lateralized than sheep. This right bias was tentatively associated with the left-hemifield laterality in familiar faces recognition which has been documented in this species. Differences between adult sheep and lambs were likely to be due to differences in social reinstatement motivation elicited by different stimuli (flock-mates or mothers) at different ages. Preferential use of the forelegs to step on a wood-board and direction of jaw movement during rumination was also tested in adult animals. No population bias nor individual-level lateralization was observed for use of the forelegs. At the same time, however, there was a large number of animals showing individual-level lateralization for the direction of jaw movement during rumination even though there was no population bias. These findings highlight that within the same species individual- and population-level lateralization can be observed in different tasks. Moreover, the results fit the general hypothesis that population-level asymmetries are more likely to occur in tasks that require social coordination among behaviourally asymmetric individuals.  
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  ISSN 0166-4328 ISBN Medium  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 6701  
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Author Brooks, C.J.; Harris, S. url  doi
openurl 
  Title Directed movement and orientation across a large natural landscape by zebras, Equus burchelli antiquorum Type Journal Article
  Year (up) 2008 Publication Animal Behaviour Abbreviated Journal Anim. Behav.  
  Volume 76 Issue 2 Pages 277-285  
  Keywords correlated random walk; directed movement; Equus burchelli antiquorum; Gps; movement path; orientation; spatial memory; spatial scale; zebra  
  Abstract We investigated how plains zebras moved across a large natural landscape by analysing the movement paths of nine zebra mares foraging out from spatially confined waterholes during the dry season in the Makgadikgadi Pans National Park, Botswana. Since it was essential to investigate directed movement over a range of spatial scales to determine the correct movement behaviour and strategy, we used Nams's scaling test for oriented movement. Zebras followed directed movement paths in the lower to medium spatial scales (10 m–3.7 km) and above their visual, and possibly olfactory, range. The spatial scale of directed movement suggests that zebras had a well-defined spatial awareness and cognitive ability. Seven zebras used directed movement paths, but the remaining two followed paths not significantly different to a correlated random walk (CRW). At large spatial scales (>3 km) no distinct movement pattern could be identified and paths could not be distinguished from a CRW. Foraging strategy affected the extent of directed movement: zebras with a confined dispersion of grazing patches around the central place directed their movements over a longer distance. Zebras may extend the distance at which they can direct their movement after improving their knowledge of the local environment.  
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  ISSN 0003-3472 ISBN Medium  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 6148  
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Author Webster, M.M.; Laland, K.N. url  doi
openurl 
  Title Social learning strategies and predation risk: minnows copy only when using private information would be costly Type Journal Article
  Year (up) 2008 Publication Proc Biol Sci Abbreviated Journal Proc. R. Soc. Lond. B  
  Volume 275 Issue 1653 Pages 2869-2876  
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  Abstract Animals can acquire information from the environment privately, by sampling it directly, or socially, through learning from others. Generally, private information is more accurate, but expensive to acquire, while social information is cheaper but less reliable. Accordingly, the 'costly information hypothesis' predicts that individuals will use private information when the costs associated with doing so are low, but that they should increasingly use social information as the costs of using private information rise. While consistent with considerable data, this theory has yet to be directly tested in a satisfactory manner. We tested this hypothesis by giving minnows (Phoxinus phoxinus) a choice between socially demonstrated and non-demonstrated prey patches under conditions of low, indirect and high simulated predation risk. Subjects had no experience (experiment 1) or prior private information that conflicted with the social information provided by the demonstrators (experiment 2). In both experiments, subjects spent more time in the demonstrated patch than in the non-demonstrated patch, and in experiment 1 made fewer switches between patches, when risk was high compared with when it was low. These findings are consistent with the predictions of the costly information hypothesis, and imply that minnows adopt a 'copy-when-asocial-learning-is-costly' learning strategy.  
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  Call Number Equine Behaviour @ team @ Serial 6196  
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Author Hoppitt, W.; Laland, K.N. url  doi
openurl 
  Title Social processes influencing learning in animals: a review of the evidence Type Journal Article
  Year (up) 2008 Publication Adv Study Behav Abbreviated Journal  
  Volume 38 Issue Pages 105-165  
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  Call Number Equine Behaviour @ team @ Hoppitt2008 Serial 6260  
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Author Langbein, J.; Siebert, K.; Nuernberg, G. url  doi
openurl 
  Title Concurrent recall of serially learned visual discrimination problems in dwarf goats (Capra hircus) Type Journal Article
  Year (up) 2008 Publication Behav Proc Abbreviated Journal  
  Volume 79 Issue Pages  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Langbein2008 Serial 6363  
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