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| Author | Russon AE; Galdikas BMF | ||||
| Title | Constraints on great apes' imitation: model and action selectivity in rehabilitant orangutan (Pongo pygmaeus) imitation | Type | Journal Article | ||
| Year | 1995 | Publication | J. Comp. Psychol. | Abbreviated Journal | |
| Volume | 109 | Issue | Pages | 5 | |
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| Call Number | Equine Behaviour @ team @ | Serial | 3037 | ||
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| Author | Yamakoshi G; Sugiyama Y | ||||
| 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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| Call Number | Equine Behaviour @ team @ | Serial | 3052 | ||
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| Author | Visalberghi E; Fragaszy DM; Savage-Rumbaugh ES | ||||
| 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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| Call Number | Equine Behaviour @ team @ | Serial | 3077 | ||
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| Author | Anderson B. | ||||
| 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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| 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. | ||||
| 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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| Call Number | refbase @ user @ | Serial | 3456 | ||
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| Author | Koenen, E.P.C.; van Veldhuizen, A.E.; Brascamp, E.W. | ||||
| 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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| Call Number | refbase @ user @ | Serial | 3961 | ||
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| Author | Clutton-Brock, J. | ||||
| 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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| Call Number | Equine Behaviour @ team @ Clutton-Brock1995 | Serial | 6247 | ||
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| Author | VanDierendonck, M.C.; de Vries, H.; Schilder, M.B.H. | ||||
| 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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| Language | English | Summary Language | Original Title | ||
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| Notes | Approved | no | |||
| Call Number | refbase @ user @ | Serial | 440 | ||
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| Author | Mesterton-Gibbons, M.; Dugatkin, L.A. | ||||
| 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. | ||||
| 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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