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Equine and Animal Cognition Reference Database

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Author Hopster, H.; van der Werf, J.T.; Erkens, J.H.; Blokhuis, H.J. url  openurl
  Title Effects of repeated jugular puncture on plasma cortisol concentrations in loose-housed dairy cows Type Journal Article
  Year 1999 Publication Journal of Animal Science Abbreviated Journal J Anim. Sci  
  Volume 77 Issue 3 Pages 708-714  
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  Call Number Equine Behaviour @ team @ Serial 5486  
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Author Jerison, H. J. openurl 
  Title Evolution of the Brain and Intelligence. Type Book Whole
  Year 1973 Publication Abbreviated Journal  
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  Publisher Academic Press Place of Publication Riverport Editor  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5462  
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Author Harvey, P.H.; Clutton-Brock, T.H.; Mace, G.M. url  openurl
  Title Brain size and ecology in small mammals and primates Type Journal Article
  Year 1980 Publication Proceedings of the National Academy of Sciences Abbreviated Journal PNAS  
  Volume 77 Issue 7 Pages 4387-4389  
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  Call Number Equine Behaviour @ team @ Serial 5456  
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Author Mace, G.M.; Harvey, P.H.; Clutton-Brock, T.H. doi  openurl
  Title Brain size and ecology in small mammals Type Journal Article
  Year 1981 Publication Journal of Zoology Abbreviated Journal J Zool  
  Volume 193 Issue 3 Pages 333-354  
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  Abstract Relative brain size (measured as gross brain size after body size effects are removed) differs systematically between families of rodents, insectivores and lagomorphs. The Sciuridae have the largest relative brain size, the Soricidae and Bathyergidae the smallest. These results are discussed and compared with previous analyses of relative brain sizes among primates and bats. These differences complicate comparisons between relative brain size across phylogenetically diverse species and attempts to relate differences in relative brain size to ecological variables. To overcome these problems, best fit relationships were estimated for each family, and values for each genus were expressed as deviations from the lines of best fit. We refer to these values as Comparative Brain Size (CBS). Differences in CBS are related to differences in habitat type (forest-dwelling genera have larger CBS' than grassland forms), in diet (folivores have smaller CBS' than generalists or insectivores, frugivores and granivores), in zonation (arboreal genera have larger CBS' than terrestrial ones) and in activity timing (nocturnal genera have larger CBS' than dirurnal ones). However, these ecological categories are interrelated and, when the effects of other ecological differences are taken into account using analyses of variance, only the differences associated with diet, and possibly habitat remain.  
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  Publisher Blackwell Publishing Ltd Place of Publication Editor  
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  ISSN 1469-7998 ISBN Medium  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5455  
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Author Clutton-Brock, T.H.; Harvey, P.H. doi  openurl
  Title Primates, brains and ecology Type Journal Article
  Year 1980 Publication Journal of Zoology Abbreviated Journal J. Zool. Lond.  
  Volume 190 Issue 3 Pages 309-323  
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  Abstract The paper examines systematic relationships among primates between brain size (relative to body size) and differences in ecology and social system. Marked differences in relative brain size exist between families. These are correlated with inter-family differences in body size and home range size. Variation in comparative brain size within families is related to diet (folivores have comparatively smaller brains than frugivores), home range size and possibly also to breeding system. The adaptive significance of these relationships is discussed.  
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  Publisher Blackwell Publishing Ltd Place of Publication Editor  
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  ISSN 1469-7998 ISBN Medium  
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  Call Number Equine Behaviour @ team @ Serial 5451  
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Author Harcourt, A. H. isbn  openurl
  Title Coalitions and alliances: are primates more complex than non-primates? Type Book Chapter
  Year 1992 Publication Coalitions and alliances in humans and other animals Abbreviated Journal  
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  Publisher Oxford University Press Place of Publication Oxford Editor Harcourt, A.H.; de Waal, F.B.M.  
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  ISSN ISBN 0-19-854273-9 Medium  
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  Call Number Equine Behaviour @ team @ Serial 5440  
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Author Gouzoules, S.; Gouzoules, H. openurl 
  Title Kinship Type Book Chapter
  Year 1987 Publication Primate societies Abbreviated Journal  
  Volume Issue Pages 299-305  
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  Publisher University of Chicago Press Place of Publication Chicago Editor Smuts, B. B.; Cheney, D. L.; Seyfarth, R. M.; Wrangham, R. W.; Struhsaker T. T  
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  Call Number Equine Behaviour @ team @ Serial 5430  
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Author Pays, O.; Sirot, E.; Fritz, H. url  doi
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  Title Collective Vigilance in the Greater Kudu: Towards a Better Understanding of Synchronization Patterns Type Journal Article
  Year 2011 Publication Ethology Abbreviated Journal  
  Volume Issue Pages no-no  
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  Abstract Collective detection of predators is one of the main advantages of living in groups in prey species. However, the mechanisms linking individual and collective vigilance remain largely unknown. Here, we investigated individual and collective vigilance in a natural population of greater kudu (Tragelaphus strepsiceros), a gregarious ruminant living under high predation risk. Controlling for environmental, individual and group factors, we show that the proportion of time during which at least one individual was vigilant increased with group size, whereas individual investment in vigilance decreased. We also show that individuals tended to synchronize both vigilance and feeding activities. More generally, and whatever the considered group size, we demonstrate how the independent scanning assumption underestimated both the proportion of time during which no individual was vigilant and the proportion of time during which all individuals were simultaneously vigilant, but overestimated the proportion of time during which one vigilant individual only was present. Our results thus contrast with the point of view that the alternative to independent vigilance is coordinated vigilance and plead for a better description of the processes whereby reciprocal influences between individuals shape collective patterns of vigilance.  
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  Publisher Blackwell Publishing Ltd Place of Publication Editor  
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  ISSN 1439-0310 ISBN Medium  
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  Call Number Equine Behaviour @ team @ Serial 5425  
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Author Sankey, C.; Richard-Yris, M.-A.; Leroy, H.; Henry, S.; Hausberger, M. url  doi
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  Title Positive interactions lead to lasting positive memories in horses, Equus caballus Type Journal Article
  Year 2010 Publication Animal Behaviour Abbreviated Journal Anim. Behav.  
  Volume 79 Issue 4 Pages 869-875  
  Keywords Equus caballus; horse; human–animal relationship; learning; memory; positive interaction; social cognition  
  Abstract Social relationships are important in social species. These relationships, based on repeated interactions, define each partner's expectations during the following encounters. The creation of a relationship implies high social cognitive abilities which require that each partner is able to associate the positive or negative content of an interaction with a specific partner and to recall this association. In this study, we tested the effects of repeated interactions on the memory kept by 23 young horses about humans, after 6 and 8 months of separation. The association of a reward with a learning task in an interactional context induced positive reactions towards humans during training. It also increased contact and interest, not only just after training, but also several months later, despite no further interaction with humans. In addition, this ‘positive memory’ of humans extended to novel persons. Overall, positive reinforcement enhanced learning and memorization of the task itself. These findings suggest remarkable social cognitive abilities that can be transposed from intraspecific to interspecific social contexts.  
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  ISSN 0003-3472 ISBN Medium  
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  Call Number Equine Behaviour @ team @ Serial 5418  
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Author Lisa Nash, H.; Song, G.K.; Price, E.O. doi  openurl
  Title Head partitions facilitate feeding by subordinate horses in the presence of dominant pen-mates Type Journal Article
  Year 1987 Publication Applied Animal Behaviour Science Abbreviated Journal Appl. Anim. Behav. Sci.  
  Volume 19 Issue 1-2 Pages 179-182  
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  Abstract The purpose of the following study was to determine if head partitions would facilitate feeding by subordinate horses in the presence of dominant pen-mates. Six pairs of mares, each with established dominant-subordinate relationships, were allowed to compete for feed in a 112-cm trough following 24 h of deprivation. Time spent feeding by each mare in each pair was recorded with a wire-mesh partition, a solid plywood partition or no partition dividing the trough. Differences in feeding times between dominant and subordinate mares were greatest in the absence of a partition and least (P<0.05) with the wire barrier in place. Differences in feeding times with the solid plywood barrier were not significantly different from either of the other treatment conditions. It was concluded that head partitions on a trough facilitate feeding by subordinate horses in the presence of dominant pen-mates and thus provide a more equitable distribution of food resources.  
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  ISSN 0168-1591 ISBN Medium  
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  Call Number Equine Behaviour @ team @ Serial 5411  
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