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Author Lydekker R, openurl 
  Title Note on the skull and markings of the Quagga Type Journal Article
  Year 1904 Publication Abbreviated Journal Proc Zool Soc Lond  
  Volume Issue Pages (down) 426-431  
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  Area Expedition Conference  
  Notes from Professor Hans Klingels Equine Reference List Approved no  
  Call Number Serial 1356  
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Author Matsushima, T.; Izawa, E.-I.; Aoki, N.; Yanagihara, S. openurl 
  Title The mind through chick eyes: memory, cognition and anticipation Type Journal Article
  Year 2003 Publication Zoological Science Abbreviated Journal Zoolog Sci  
  Volume 20 Issue 4 Pages (down) 395-408  
  Keywords Animals; Birds/anatomy & histology/*physiology; Brain/anatomy & histology/cytology/physiology; Cognition/*physiology; Memory/*physiology; Perception/physiology  
  Abstract To understand the animal mind, we have to reconstruct how animals recognize the external world through their own eyes. For the reconstruction to be realistic, explanations must be made both in their proximate causes (brain mechanisms) as well as ultimate causes (evolutionary backgrounds). Here, we review recent advances in the behavioral, psychological, and system-neuroscience studies accomplished using the domestic chick as subjects. Diverse behavioral paradigms are compared (such as filial imprinting, sexual imprinting, one-trial passive avoidance learning, and reinforcement operant conditioning) in their behavioral characterizations (development, sensory and motor aspects of functions, fitness gains) and relevant brain mechanisms. We will stress that common brain regions are shared by these distinct paradigms, particularly those in the ventral telencephalic structures such as AIv (in the archistriatum) and LPO (in the medial striatum). Neuronal ensembles in these regions could code the chick's anticipation for forthcoming events, particularly the quality/quantity and the temporal proximity of rewards. Without the internal representation of the anticipated proximity in LPO, behavioral tolerance will be lost, and the chick makes impulsive choice for a less optimized option. Functional roles of these regions proved compatible with their anatomical counterparts in the mammalian brain, thus suggesting that the neural systems linking between the memorized past and the anticipated future have remained highly conservative through the evolution of the amniotic vertebrates during the last 300 million years. With the conservative nature in mind, research efforts should be oriented toward a unifying theory, which could explain behavioral deviations from optimized foraging, such as “naive curiosity,” “contra-freeloading,” “Concorde fallacy,” and “altruism.”  
  Address Graduate School of Bioagricultural Sciences, Nagoya University, Japan. matusima@agr.nagoya-u.ac.jp  
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  Series Volume Series Issue Edition  
  ISSN 0289-0003 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:12719641 Approved no  
  Call Number Equine Behaviour @ team @ Serial 2858  
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Author BOURDELLE E openurl 
  Title La distribution geographique des equides actuels. Type Journal Article
  Year 1949 Publication Abbreviated Journal 3.Intern Zool Kongr  
  Volume 1948 Issue Pages (down) 383-387  
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  Corporate Author Thesis  
  Publisher Place of Publication Paris Editor  
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  Area Expedition Conference  
  Notes from Professor Hans Klingels Equine Reference List Approved no  
  Call Number Serial 962  
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Author de Villiers, M.S.; Richardson, P.R.K.; van Jaarsveld, A.S. url  doi
openurl 
  Title Patterns of coalition formation and spatial association in a social carnivore, the African wild dog (Lycaon pictus) Type Journal Article
  Year 2003 Publication Journal of Zoology Abbreviated Journal J Zool  
  Volume 260 Issue 4 Pages (down) 377-389  
  Keywords coalitions; social systems; Carnivora; Lycaon pictus  
  Abstract In many social species, relationships within groups seem to be non-random but related to variables such as rank, kinship or sexual attractiveness. The endangered African wild dog Lycaon pictus is a social carnivore that lives in large, stable packs, and intra-pack associations might be expected to display similar patterns. We investigated patterns of coalition formation (support during dominance interactions, and partnership interactions) and resting associations between members of a captive pack of 19 wild dogs. The social organization of the captive pack was similar to that of free-ranging packs in many respects. Polyadic (group) incidents of coalition support were also observed in a free-ranging pack. Patterns of coalition formation in the captive pack were related to rank. Most aggressive interactions involved high-ranking individuals (particularly the alpha, beta and third-ranking males) and coalitionary support tended to reinforce the existing hierarchy. However, there was at least one example of support influencing a successful rank challenge. Support was affected by potential risks and benefits, the latter including dominance through association and revolutionary alliances. An even stronger pattern overlaid associations between pack members: coalitions and resting associations were strongest between members of the same age–sex cohort, and may have enabled the eventual dominance of younger pack members over adults. Among adults, coalitionary associations were sometimes overridden by intersexual relationships. The results from this captive pack suggest that wild dogs are sensitive to differences in competitive ability. This information, in conjunction with strong affiliative bonds between littermates, is used to manoeuvre for position in the social hierarchy. It may also be important during dispersal, in encounters with other dispersing groups of the same sex. Although most features of the social structure of the captive pack were comparable to those of free-ranging packs, aspects such as the influence of relatedness on coalition formation still need to be explored.  
  Address  
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  Publisher Blackwell Publishing Ltd Place of Publication Editor  
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  Series Volume Series Issue Edition  
  ISSN 1469-7998 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5249  
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Author VanDierendonck, M.C.; de Vries, H.; Schilder, M.B.H. url  openurl
  Title An Analysis of Dominance, Its Behavioural Parameters and Possible Determinants in a Herd of Icelandic orses in Captivity Type Journal Article
  Year 1995 Publication Netherlands Journal of Zoology Abbreviated Journal Netherl. J. Zool.  
  Volume 45 Issue 3-4 Pages (down) 362-385  
  Keywords Dominance; rank order; horses; Icelandic horses.  
  Abstract Th e applicability of the concept of dominance was investigated in a captive herd of  Icelandic

horses and  ponies of diff erent breeds. Eight out of  behaviours possibly related

to dominance occurred frequently enough to be investigated in detail. For these eight agonistic

behaviours the coverage, the unidirectionality in the exchange, and the degree of

transitivity (Landau`s linearity index) were calculated. Four off ensive behaviours, together

with avoidance, were suitable for further analysis with regard to dominance. Th e patterns

of asymmetries with which these behaviours were exchanged were suffi ciently similar as to

justify the application of the dominance concept and to construct a (nearly) linear dominance

hierarchy. Th e rank order of the castrated stallions was completely linear, the hierarchy

of the mares was almost completely linear. Th e results suggest that off ensive and defensive

aggressive behaviours should be treated separately and that the concept of dominance

is applicable. However, ritualized formal dominance signals between adult horses appear to

be (almost) absent. Th e rank positions of the individuals were correlated with age and residency

in the herd but not with height. Middle ranking horses tended to be more frequently

in the close vicinity of another horse than high ranking or low ranking horses. Over and

above this correlation at the individual level, it was found that pairs of horses close in rank

to each other were more often also spatially close to each other. Being in oestrus did not infl

uence the dominance relationships between mares. For castrated stallions the rank positions

were correlated with the age at which they were castrated. Th is suggests that in male

horses experience prior to neutering infl uences the behaviour afterwards.
 
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  Notes Approved no  
  Call Number refbase @ user @ Serial 440  
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Author VanDierendonck, M.C., de Vries, H., Schilder, M.B.H. url  doi
openurl 
  Title An Analysis of Dominance, Its Behavioural Parameters and Possible Determinants in a Herd of Icelandic horses in captivity Type Journal Article
  Year 1995 Publication Netherlands Journal of Zoology Abbreviated Journal Netherl. J. Zool.  
  Volume 45 Issue 3-4 Pages (down) 362-385  
  Keywords Dominance; rank order; horses; Icelandic horses.  
  Abstract Feral horses are social animals, which have to rely on survival strategies centered on the formation of cohesive social bonds within their bands. Many problems in the husbandry of social animals such as horses, are due to the fact that the limits of their adaptive abilities are exceeded. Evidence suggests that the fundamental social characteristics of domestic horses have remained relatively unchanged. The social structure, social strategies and social interactions were investigated (3 non-consecutive years, 24 hr per day for several weeks) in long term established groups of domestic horses (mares and geldings of all ages) and a few small introduced groups, kept in (semi)natural environments. The general aim was to investigate the social needs of domestic horses. The social life of domestic horses was characterised by long lasting bonds with preferred partners which were established and maintained by allogrooming, play, proximity and dominance behaviours. Bonding partners were mainly found within the same sex-age group, but adult geldings also bonded with sub-adult mares and geldings. Adult mares were clustered in a group, while the other animals formed a second group. Among the adult mares, subgroups according to reproductive state were formed. Individuals regulated their social network by interfering with interactions between other members of the herd, which in itself is complex. An intervention is a behavioural action of one animal that actively interferes with an ongoing interaction between a dyad with the apparent aim of altering that interaction. This was verified by post-hoc analyses of disturbed and undisturbed interactions. Interventions in allogrooming or play were performed significantly more often when at least one member of the initial dyad was a preferred partner of, or familiar to (within the small introduced bands) the intervener. The stronger the preferred association in allogrooming between the intervener and member(s) of the initial dyad, the higher the probability the intervener would displace one initial member and continue allogrooming with the other. Just five behaviours were extracted which reliably reflected the dominance relations among horses. Aggression with the hind quarters was used both offensively and defensively and therefore not suitable as a reliable parameter. Individual dominance relationships were related to social experience. The implications of these findings for horse husbandry were assessed. It is argued that the execution of affiliative behaviours may be rewarding in itself, and therefore always will be a highly motivated behaviour. It is shown that social positive physical interactions (allogrooming, play) with other horses is an ethological need and therefore indispensable in modern husbandry systems. Ethological needs are so important for the animal that husbandry systems that lack the possibilities to execute such behaviours will cause chronic stress. It is concluded that all horses need physical social contact, and that horses, which lack appropriate social learning experiences during ontogeny, may be hampered in their social functioning later in life. Solutions for problems, including dominance problems, in individual social housing and group housing are presented.  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 2368  
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Author Tichomirow A, openurl 
  Title Zur näheren Kenntnis des Equus przewalskii Type Journal Article
  Year 1902 Publication Abbreviated Journal Zool Anz  
  Volume 25 Issue Pages (down) 344-349  
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  Area Expedition Conference  
  Notes from Professor Hans Klingels Equine Reference List Approved no  
  Call Number Serial 1648  
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Author Kirkpatrick, J. F.; Lasley, B. L.; Shideler,S. E. doi  openurl
  Title Urinary steroid evaluations to monitor ovarian function in exotic ungulates Type Journal Article
  Year 1990 Publication Zoo Biology Abbreviated Journal Zoo Biol  
  Volume 9 Issue 5 Pages (down) 341 - 348  
  Keywords Perissodactyla – ovulation – corpus luteum  
  Abstract A direct enzyme immunoassay (EIA) for non-specific urinary progesterone (Po) metabolites, utilizing a non-specific monoclonal antibody against pregnanediol-3-glucuronide, was evaluated for the purpose of assessing luteal function in equids. Urinary pregnanediol-3-glucuronide (PdG) and immunoreactive PdG-like conjugate (iPdG) concentrations, indexed by creatinine, were compared to plasma Po concentrations in non-conceptive ovarian cycles through two ovulations in four mares. High-performance liquid chromatography (HPLC) of urine from lutealphase mares and a pregnant zebra revealed an absence of significant concentrations of PdG and the presence of at least three immunoreactive compounds, all of which were more polar than PdG. The concentration of iPdG in the mare ranged from a nadir of approximately 3 ng/mg Cr at the time of ovulation to nearly 400 ng/mg Cr at the mid-luteal-phase peak and paralleled plasma Po concentrations. This non-radiometric assay for iPdG permits the assessment of ovulation, luteal formation and function, and luteolysis in unprocessed urine samples from domestic mares. Data from a single zebra indicate this approach also will permit simplified and non-invasive longitudinal studies of ovarian function among a wide range of Equidae.  
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  Area Expedition Conference  
  Notes from Professor Hans Klingels Equine Reference List Approved yes  
  Call Number Serial 1274  
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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 (down) 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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  Series Volume Series Issue Edition  
  ISSN 1469-7998 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5455  
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Author Smuts, M.M.S.; Penzhorn, B. L. openurl 
  Title Descriptions of antomical differences between skulls and mandibles of Equus zebra and E. burchelli from southern Africa Type Journal Article
  Year 1988 Publication South African Journal of Zoology Abbreviated Journal South African Journal of Zoology  
  Volume 23 Issue (4)3 Pages (down) 328-336  
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  Area Expedition Conference  
  Notes from Professor Hans Klingels Equine Reference List Approved yes  
  Call Number Serial 1617  
Permanent link to this record
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