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Author Yamakoshi G; Sugiyama Y openurl 
  Title Pestle-pounding behavior of wild chimpanzees at Bossou, Guinea: a newly observed tool-using behavior Type Journal Article
  Year 1995 Publication Primates Abbreviated Journal Primates  
  Volume 36 Issue Pages 489  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 3052  
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Author Visalberghi E; Fragaszy DM; Savage-Rumbaugh ES openurl 
  Title Performance in a tool-using task by common chimpanzees (Pan troglodytes), bonobos (Pan paniscus), an orangutan (Pongo pygmaeus), and capuchin monkeys (Cebus apella) Type Journal Article
  Year 1995 Publication J. Comp. Psychol. Abbreviated Journal  
  Volume 109 Issue Pages 52  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 3077  
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Author Anderson B. doi  openurl
  Title Dendrites and cognition: A negative pilot study in the rat Type Journal Article
  Year 1995 Publication Intelligence Abbreviated Journal  
  Volume 20 Issue Pages 291-308  
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  Notes Approved no  
  Call Number refbase @ user @ Serial 3453  
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Author Laughlin N.K.; Lasky R.E.; Luck M.L.; Kluender K.R.; Hecox K.E. doi  openurl
  Title Early lead exposure alters behavioral and electrophysiological indices of auditory processing in the rhesus monkey Type Journal Article
  Year 1995 Publication Neurotoxicology and Teratology Abbreviated Journal  
  Volume 17 Issue Pages 374-374  
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  Notes Approved no  
  Call Number refbase @ user @ Serial 3456  
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Author Hinchcliff, K.W.; Kohn, C.W.; Geor, R.; McCutcheon, L.J.; Foreman, J.; Andrews, F.M.; Allen, A.K.; White, S.L.; Williamson, L.H.; Maykuth, P.L. openurl 
  Title Acid:base and serum biochemistry changes in horses competing at a modified 1 Star 3-day-event Type Journal Article
  Year 1995 Publication Equine Veterinary Journal. Supplement Abbreviated Journal Equine Vet J Suppl  
  Volume Issue 20 Pages 105-110  
  Keywords *Acid-Base Equilibrium; Animals; Blood Proteins/analysis; Body Water/metabolism; Carbon Dioxide/blood; Electrolytes/*blood; Female; Hematocrit/veterinary; Homeostasis; Horses/*blood/physiology; Hydrogen-Ion Concentration; Male; Physical Conditioning, Animal/*physiology  
  Abstract We examined the effects of participation in each of 3 modifications of Day 2 of a 3-day-event on blood and serum variables indicative of hydration, acid:base status and electrolyte homeostasis of horses. Three groups of horses – 8 European (E) horses and 2 groups each of 9 North American horses performed identical Days 1 (dressage) and 3 (stadium jumping) of a 3-day-event. E horses and one group of the North American horses (TD) performed modifications of Day 2 of a 1 Star 3-day-event and the other group of North American horses (HT) performed a Horse Trial on Day 2. Jugular venous blood was collected from each horse on the morning of Day 2 before any warm-up activity, between 4 min 55 s and 5 min 15 s after Phase D and the following morning. Eight E horses, 5 TD horses and 8 HT horses completed the trials. There were few significant differences in acid:base or serum biochemistry variables detected among horses performing either 2 variations of the Speed and Endurance day of a 1 Star 3-day-event, or a conventional Horse Trial. Failure to detect differences among groups may have been related to the low statistical power associated with the small number of horses, especially in the TD group, variation in quality of horses among groups and the different times of the day at which the E horses competed. Differences detected among time points were usually common to all groups and demonstrated metabolic acidosis with a compensatory respiratory alkalosis, a reduction in total body water and cation content, and hypocalcaemia. Importantly, horses of all groups did not replenish cation, chloride, and calcium deficits after 14-18 h of recovery.  
  Address Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Ohio State University, Columbus 43210-1089, USA  
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  Notes PMID:8933092 Approved no  
  Call Number Equine Behaviour @ team @ Serial 3740  
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Author Koenen, E.P.C.; van Veldhuizen, A.E.; Brascamp, E.W. url  openurl
  Title Genetic parameters of linear scored conformation traits and their relation to dressage and show-jumping performance in the Dutch Warmblood Riding Horse population Type Journal Article
  Year 1995 Publication Livestock Production Science Abbreviated Journal  
  Volume 43 Issue 1 Pages 85-94  
  Keywords Horse; Heritability; Conformation; Dressage; Show jumping  
  Abstract In this study genetic parameters of linear scored conformation traits of the Dutch Warmblood Riding Horse were estimated in relation to performance in competition. Observations on 10 665 mares were analyzed with an animal model including the fixed effects age, classifier, location and percentage of thoroughbred. Using restricted maximum likelihood algorithms, heritabilities of 26 linear scored conformation traits were estimated in the range 0.09-0.28. Several conformation traits had high up to very high mutual genetic correlations. Competition results of 3476 horses with performance in dressage and 3220 horses with performance in show-jumping were linked to the conformation data to estimate the genetic relationship between conformation and performance in competition. The model for the evaluation of the competition results included the fixed effects riding club, age and sex. Estimated heritabilities for dressage and show-jumping were 0.17 +/- 0.05 and 0.19 +/- 0.04, respectively. Genetic correlations between conformation and performance were low to moderate. The length of the neck, length and position of the shoulders, shape and length of croup and muscularity of the haunches had a significant moderate genetic correlation with dressage. Muscularity of the neck, shape of the croup and muscularity of the haunches had a significant genetic correlation with show-jumping. The results indicate that, due to the low genetic correlations with performance traits, indirect selection for performance using conformation results is of limited value.  
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  Notes Approved no  
  Call Number refbase @ user @ Serial 3961  
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Author Clutton-Brock, J. openurl 
  Title Origins of the dog: domestication and early history Type Book Chapter
  Year 1995 Publication The Domestic Dog: Its Evolution, Behaviour and Interactions with People Abbreviated Journal  
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  Publisher Cambridge University Press Place of Publication Cambridge Editor Serpell, J.A.  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Clutton-Brock1995 Serial 6247  
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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 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 Mesterton-Gibbons, M.; Dugatkin, L.A. url  openurl
  Title Toward a theory of dominance hierarchies: effects of assessment, group size, and variation in fighting ability Type Journal Article
  Year 1995 Publication Behavioral Ecology Abbreviated Journal Behav. Ecol.  
  Volume 6 Issue 4 Pages 416-423  
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  Abstract We introduce assessment to the analysis of dominance hierarchies by exploring the effect of an evolutionarily stable fighting rule when there is variation in resource holding potential (RHP) and RHP is not a perfectly reliable predictor of the outcome of a fight. With assessment, the probability of a linear hierarchy decreases with group size but can remain appreciable for groups of up to seven or eight individuals, whereas it decreases virtually to zero if there is no assessment. The probability of a hierarchy that correlates perfectly with RHP is low unless group size is small.  
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  Notes 10.1093/beheco/6.4.416 Approved no  
  Call Number refbase @ user @ Serial 447  
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Author Dugatkin, L.A.; Hoglund, J. url  doi
openurl 
  Title Delayed breeding and the evolution of mate copying in lekking species Type Journal Article
  Year 1995 Publication Journal of Theoretical Biology Abbreviated Journal J. Theor. Biol.  
  Volume 174 Issue 3 Pages 261-267  
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  Abstract Recent experimental evidence indicates that females may copy the mate choice of others. Here, we present a model for the evolution of mate copying strategies in lekking species. In the model, all females (copiers and non-copiers) assess male quality, but a copier's assessment of a male's quality increases after males have mated with other females. The model demonstrates that mate copying is favored when breeding late in the season has a relatively high cost. We hope that our results will spur empirical work quantifying the time constraints associated with breeding, thus allowing more direct tests of the model's predictions.  
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  Notes Approved no  
  Call Number refbase @ user @ Serial 482  
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