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Equine and Animal Cognition Reference Database

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Author Duncan, I.J.H.; Petherick, J.C. url  openurl
  Title Proceeding (Paper presented at the Winter Meeting of the Society for Veterinary Ethology, London, Great Britain, 30 November 1988)Cognition: The implications for animal welfare Type Journal Article
  Year 1989 Publication Applied Animal Behaviour Science Abbreviated Journal Appl. Anim. Behav. Sci.  
  Volume 24 Issue 1 Pages 81-1010  
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  Call Number Equine Behaviour @ team @ Serial 2921  
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Author Walker, S. url  openurl
  Title An introduction to animal cognition : By . Hillsdale, New Jersey: Lawrence Erlbaum (1988). Pp. viii + 328. Price [pound sign]8.95 paperback Type Journal Article
  Year 1989 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.  
  Volume 37 Issue Part 3 Pages 521-522  
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  Call Number Equine Behaviour @ team @ Serial 2922  
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Author Chandler M; Fritz AS; Hala S openurl 
  Title Small scale deceit: deception marker of 2-, 3- and 4-year-olds' early theories of mind Type Journal Article
  Year 1989 Publication Child Dev. Abbreviated Journal  
  Volume 60 Issue Pages 1263  
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  Call Number Equine Behaviour @ team @ Serial 2986  
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Author Povinelli DJ openurl 
  Title Failure to find self-recognition in Asian elephants (Elephas maximus) in contrast to their use of mirror cues to discover hidden food Type Journal Article
  Year 1989 Publication J. Comp. Psychol. Abbreviated Journal  
  Volume 103 Issue Pages 122  
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  Call Number Equine Behaviour @ team @ Serial 3026  
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Author Dewsbury, D.A. url  openurl
  Title Comparative Psychology, Ethology, and Animal Behavior Type Journal Article
  Year 1989 Publication Annual Review of Psychology Abbreviated Journal  
  Volume 40 Issue 1 Pages 581-602  
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  Call Number refbase @ user @ Serial 3541  
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Author Huizinga, H.A.; van der Meij, G.J.W. url  openurl
  Title Estimated parameters of performance in jumping and dressage competition of the Dutch Warmblood horse Type Journal Article
  Year 1989 Publication Livestock Production Science Abbreviated Journal  
  Volume 21 Issue 4 Pages 333-345  
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  Abstract The objective of this study is to estimate several genetic parameters in the Dutch Warmblood riding horse population. The traits involved are performances in jumping and dressage competition. The following parameters are estimated: heritabilities for jumping and dressage; phenotypic and genetic correlations between jumping and dressage; and phenotypic and genetic correlations between performances at different ages. These parameters are estimated by restricted maximum likelihood (REML). Data are from 6899 horses with performances in jumping and 10 408 horses with performances in dressage competition. The horses are sired by 205 and 237 stallions for the two traits, respectively. The progeny range in age from 4 to 8 years old. The performance trait is a cumulatively derived score, that reflects the level of performance in competition. A square root transformation of the score is most appropriate to normalize the data. For estimation of phenotypic and genetic parameters the data is split into two data sets according to the age of the sires (offspring sired by older vs. younger stallions). For estimating correlations between performances at 4, 5 and 6 years of age, performances of the offspring out of previous years are linked to the data. The most unbiased estimates of heritability for jumping and dressage are from data derived from the youngest offspring sired by the younger stallions and are 0.20 and 0.10, respectively. Genetic correlation between jumping and dressage ranges from -0.27 to 0.10. The phenotypic correlation between these traits ranges from 0.15 to 0.26. Phenotypic and genetic correlations between performances at 4, 5 and 6 years average 0.95 and 0.75, respectively. These latter results have important implications for genetic evaluation of breeding candidates in the population.  
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  Call Number refbase @ user @ Serial 3966  
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Author de Waal, F.B.M. openurl 
  Title Peacemaking Among Primates Type Miscellaneous
  Year 1989 Publication Abbreviated Journal  
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  Call Number Equine Behaviour @ team @ Serial 4924  
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Author Harrington, F.H. url  doi
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  Title Chorus howling by wolves: Acoustic structures, pack size and Beau Geste effect Type Journal Article
  Year 1989 Publication Bioacoustics Abbreviated Journal  
  Volume 2 Issue Pages  
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  Call Number Equine Behaviour @ team @ Harrington1989 Serial 6463  
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Author Ellard, M.-E.; Crowell-Davis, S.L. url  doi
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  Title Evaluating equine dominance in draft mares Type Journal Article
  Year 1989 Publication Applied Animal Behaviour Science Abbreviated Journal Appl. Anim. Behav. Sci.  
  Volume 24 Issue 1 Pages 55-75  
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  Abstract The social hierarchy of a herd of 12 draft mares was assessed using agonism in the field, paired-feeding tests and a group-feeding test. Results from the paired-feeding test correlated significantly, but imperfectly, with those from the field. Differential motivation among subjects for the feed and disruption of ambiguous relationships among mares reduced the reliability of the paired-feeding test as a measure of social dominance. Results from the group-feeding test did not correlate significantly with the field hierarchy and only a few mares ever ate from the bucket. Height, weight and age each correlated significantly with rank; a mare's tendency to remain alone did not. Total aggressive scores during the paired-feeding test correlated with rank. However, a high-ranking mare was no more aggressive to each of her subordinates than was a low-ranking mare. Rather, all mares aggressed more against individuals close in rank to themselves and with preferred field associates. In the field, mares associated most with other mares of similar rank.  
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  Call Number refbase @ user @ Serial 662  
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Author De Waal, Frans B. M.; Luttrell, L.M. doi  openurl
  Title Toward a comparative socioecology of the genus Macaca: Different dominance styles in rhesus and stumptail monkeys Type Journal Article
  Year 1989 Publication American journal of primatology Abbreviated Journal Am. J. Primatol.  
  Volume 19 Issue 2 Pages 83-109  
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  Abstract Captive studies can make a unique contribution to primate socioecology by documenting species-typical social dispositions under controlled conditions. Recent theories seek to connect the dominance relationships, group cohesiveness, and feeding ecology of primates. The present study explores the first two aspects by comparing the social organization of rhesus (Macaca mulatta) and stumptail monkeys (M. arctoides). Data were collected over a period of eight years, with five different methods, on three well-established captive groups in identical environments. The groups were found to share one characteristic: a clear-cut, linear formal dominance hierarchy as expressed in teeth-baring displays. The two main study groups (one of each species) differed significantly, however, with respect to nine of eleven behavioral measures. In addition to a previously reported higher frequency of reconciliation in the stumptail group, this group showed (1) more frequent but less severe aggressive behavior, (2) greater symmetry of contests, (3) greater social tolerance, (4) more nonagonistic approaches, and (5) more allogrooming. The differences can be summarized as a contrast in dominance style, with the stumptails having a more relaxed style and placing greater emphasis on social cohesion than the rhesus monkeys. An egalitarian attitude was also reflected in approach behavior: contacts in the rhesus group were mostly initiated by dominants, whereas contacts in the stumptail group were initiated independent of rank. Comparisons with a second rhesus group, and with published reports, suggest that while some of the observed differences are probably representative of the two species, considerable intraspecific variation does exist, and a more comprehensive program of comparative studies is needed.  
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  Call Number refbase @ user @ FransB.M.DeWaal1989 Serial 870  
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