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Author Dey, S.
Title Trailer accidents Type Journal Article
Year 1995 Publication Journal of Equine Veterinary Science Abbreviated Journal
Volume 15 Issue 4 Pages (up) 148-149
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 4662
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Author Lefebvre, L.
Title Ecological correlates of social learning: problems and solutions for the comparative method Type Journal Article
Year 1995 Publication Behavioural Processes Abbreviated Journal Behav. Process.
Volume 35 Issue 1-3 Pages (up) 163-171
Keywords Adaptive specialization; Social learning; Comparative method
Abstract Interspecific variation in learning and cognition is often accounted for by adaptive specialization, an ecological framework where variation between species in the environmental problems they face is thought to select for quantitatively and/or qualitatively different abilities. Adaptive specialization theory relies on the comparative method for testing its hypotheses and assumes a naturally selected basis for the predicted differences. This review examines social learning as a specialization to group-living and scramble feeding competition. It points out one important problem with current studies in the area, the lack of quantitative controls for confounding variables that may cause type 1 or 2 error in comparative tests. A linear regression technique is proposed to measure and remove interspecific differences on control tests for which there is no predicted adaptive specialization; as in other areas of comparative biology, the adaptive prediction is then made on the residual deviation from the regression of these confounding variables. Examples are given from research on opportunistic Columbids, the group-living feral pigeon Columbia livia, and the territorial Zenaida dove, Zenaida aurita.
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Notes Approved no
Call Number refbase @ user @ Serial 843
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Author Boissy, A.
Title Fear and Fearfulness in Animals Type Journal Article
Year 1995 Publication The Quarterly Review of Biology Abbreviated Journal The Quarterly Review of Biology
Volume 70 Issue 2 Pages (up) 165-191
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Abstract Persistence of individual differences in animal behavior in reactions to various environmental challenges could reflect basic divergences in temperament, which might be used to predict details of adaptive response. Although studies have been carried out on fear and anxiety in various species, including laboratory, domestic and wild animals, no consistent definition of fearfulness as a basic trait of temperament has emerged. After a classification of the events that may produce a state of fear, this article describes the great variability in behavior and in physiological patterns generally associated with emotional reactivity. The difficulties of proposing fearfulness-the general capacity to react to a variety of potentially threatening situations-as a valid basic internal variable are then discussed. Although there are many studies showing covariation among the psychobiological responses to different environmental challenges, other studies find no such correlations and raise doubts about the interpretation of fearfulness as a basic personality trait. After a critical assessment of methodologies used in fear and anxiety studies, it is suggested that discrepancies among results are mainly due to the modulation of emotional responses in animals, which depend on numerous genetic and epigenetic factors. It is difficult to compare results obtained by different methods from animals reared under various conditions and with different genetic origins. The concept of fearfulness as an inner trait is best supported by two kinds of investigations. First, an experimental approach combining ethology and experimental psychology produces undeniable indicators of emotional reactivity. Second, genetic lines selected for psychobiological traits prove useful in establishing between behavioral and neuroendocrine aspects of emotional reactivity. It is suggested that fearfulness could be considered a basic feature of the temperament of each individual, one that predisposes it to respond similarly to a variety of potentially alarming challenges, but is nevertheless continually modulated during development by the interaction of genetic traits of reactivity with environmental factors, particularly in the juvenile period. Such interaction may explain much of the interindividual variability observed in adaptive responses.
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Publisher The University of Chicago Press Place of Publication Editor
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ISSN 0033-5770 ISBN Medium
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Notes doi: 10.1086/418981 Approved no
Call Number Equine Behaviour @ team @ Serial 6664
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Author Figueredo, A.J.; Cox, R.L.; Rhine, R.J.
Title A Generalizability Analysis of Subjective Personality Assessments in the Stumptail Macaque and the Zebra Finch Type Journal Article
Year 1995 Publication Multivariate Behavioral Research Abbreviated Journal Multivariate Behav Res
Volume 30 Issue 2 Pages (up) 167-197
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Abstract Psychometric findings are reported from two studies concerning the construct validity, temporal stability, and interrater reliability of the latent common factors underlying subjective assessments by human raters of personality traits in two nonhuman animal species: (a) the Stumptail macaque (Maraca arctoides), a cercopithecine monkey; and (b) the Zebra finch (Poephila guttata), an estrildid songbird. Because most theories of animal personality have historically implied that certain personality constructs should be relatively universal across taxa, parallel analyses of similar data are reported for two phylogenetically distant species of subject using the same psychometric methods. Each of the samples was drawn from a socially-housed colony of the same species: that of macaques consisted of 5 mature adult fem ales and 8 of their adult offspring and that of finches consisted of 5 adult individuals. A modified version of the 1978 Stevenson-Hinde and Zunz (SHZ) list of personality items was applied to the macaques at various times during the eight years from 1980-1988 and to the finches during 1992. This study also used the three SHZ scales – Confident, Excitable, and Sociable – originally derived from principal components. Generalizability analyses were used to assess the construct validity, temporal stability, and interrater reliability of the hypothesized factors. Both Stumptail macaques and Zebra finches manifest measurable personality factors that are highly valid across multiple items, stable across multiple years, and reliable across multiple raters. The same model fits both species, as predicted by theory. The construct validity of the factors is slightly higher for the finches than for the macaques, although the interrater reliability is somewhat lower. This study illustrates how generalizability analysis can be used to test prespecified confirmatory factor models when the number of individual subjects is quite small.
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Publisher Psychology Press Place of Publication Editor
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ISSN 0027-3171 ISBN Medium
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5169
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Author Ishida, N.; Oyunsuren, T.; Mashima, S.; Mukoyama, H.; Saitou, N.
Title Mitochondrial DNA sequences of various species of the genus Equus with special reference to the phylogenetic relationship between Przewalskii's wild horse and domestic horse Type Journal Article
Year 1995 Publication Journal of Molecular Evolution Abbreviated Journal J Mol Evol
Volume 41 Issue 2 Pages (up) 180-188
Keywords Animals; Base Sequence; Chromosomes; Conserved Sequence/genetics; DNA, Mitochondrial/*genetics; Evolution; Genetic Variation/*genetics; Horses/*genetics; Molecular Sequence Data; *Phylogeny; RNA, Transfer, Pro/genetics; Sequence Alignment; Sequence Analysis, DNA
Abstract The noncoding region between tRNAPro and the large conserved sequence block is the most variable region in the mammalian mitochondrial DNA D-loop region. This variable region (ca. 270 bp) of four species of Equus, including Mongolian and Japanese native domestic horses as well as Przewalskii's (or Mongolian) wild horse, were sequenced. These data were compared with our recently published Thoroughbred horse mitochondrial DNA sequences. The evolutionary rate of this region among the four species of Equus was estimated to be 2-4 x 10(-8) per site per year. Phylogenetic trees of Equus species demonstrate that Przewalskii's wild horse is within the genetic variation among the domestic horse. This suggests that the chromosome number change (probably increase) of the Przewalskii's wild horse occurred rather recently.
Address Laboratory of Molecular and Cellular Biology, Japan Racing Association, Tokyo
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ISSN 0022-2844 ISBN Medium
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Notes PMID:7666447 Approved no
Call Number Equine Behaviour @ team @ Serial 5042
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Author Pepperberg IM; Garcia SE; Jackson EC; Marconi S
Title Mirror use by African Grey parrots (Psittacus erithacus) Type Journal Article
Year 1995 Publication J. Comp. Psychol. Abbreviated Journal
Volume 109 Issue Pages (up) 182
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 3023
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Author Duncan, I.J.H.
Title D.G.M. Wood-Gush Memorial Lecture: An applied ethologist looks at the question “Why?” Type Journal Article
Year 1995 Publication Applied Animal Behaviour Science Abbreviated Journal Appl. Anim. Behav. Sci.
Volume 44 Issue 2-4 Pages (up) 205-217
Keywords Causation; Cognition; Function; Future research; Ontogeny; Phylogeny; States of suffering; Welfare
Abstract The question “Why does an animal behave as it does?” can be answered in terms of ontogeny, function, phylogeny and causation. The achievements of applied ethology relative to those four approaches are reviewed, gaps in our knowledge are identified and predictions for fruitful avenues of future research are made. Ontogenic studies have been useful in the past and it is suggested that studies of the effects of early experience on the sexual behaviour of animals used in artificial breeding schemes might pay dividends. It is proposed that functional studies should be approached cautiously. More information is required on the process of domestication in order to increase the chances of success in the trend to farm exotic species. Studies on causation are likely to continue to be the mainstay of applied ethological research. It is suggested that within this category, studies on states of suffering, motivation and cognition are urgently required to answer the most pressing questions on animal welfare.
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Call Number Equine Behaviour @ team @ Serial 2919
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Author Marten, K.; Psarakos, S.
Title Using self-view television to distinguish between self-examination and social behavior in the bottlenose dolphin (Tursiops truncatus) Type Journal Article
Year 1995 Publication Consciousness and Cognition Abbreviated Journal Conscious Cogn
Volume 4 Issue 2 Pages (up) 205-224
Keywords Animal Communication; Animals; *Attention; Discrimination Learning; Dolphins/*psychology; Female; Male; *Self Concept; *Social Behavior; *Television; *Visual Perception
Abstract In mirror mark tests dolphins twist, posture, and engage in open-mouth and head movements, often repetitive. Because postures and an open mouth are also dolphin social behaviors, we used self-view television as a manipulatable mirror to distinguish between self-examination and social behavior. Two dolphins were exposed to alternating real-time self-view (“mirror mode”) and playback of the same to determine if they distinguished between them. The adult male engaged in elaborate open-mouth behaviors in mirror mode, but usually just watched when played back the same material. Mirror mode behavior was also compared to interacting with real dolphins (controls). Mark tests were conducted, as well as switches from front to side self-views to see if the dolphins turned. They presented marked areas to the self-view television and turned. The results suggest self-examination over social behavior.
Address Earthtrust, Kailua, Hawaii 96734, USA
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Language English Summary Language Original Title
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ISSN 1053-8100 ISBN Medium
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Notes PMID:8521259 Approved no
Call Number Equine Behaviour @ team @ Serial 4164
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Author Clutton-Brock, T.H.; Parker, G.A.
Title Punishment in animal societies Type Journal Article
Year 1995 Publication Abbreviated Journal Nature
Volume 373 Issue 6511 Pages (up) 209-216
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Abstract Although positive reciprocity (reciprocal altruism) has been a focus of interest in evolutionary biology, negative reciprocity (retaliatory infliction of fitness reduction) has been largely ignored. In social animals, retaliatory aggression is common, individuals often punish other group members that infringe their interests, and punishment can cause subordinates to desist from behaviour likely to reduce the fitness of dominant animals. Punishing strategies are used to establish and maintain dominance relationships, to discourage parasites and cheats, to discipline offspring or prospective sexual partners and to maintain cooperative behaviour.
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Notes 10.1038/373209a0 Approved no
Call Number Equine Behaviour @ team @ Serial 4838
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Author Beer C.G.
Title Trial and error in the evolution of cognition Type Journal Article
Year 1995 Publication Behavioural Processes Abbreviated Journal Behav. Process.
Volume 35 Issue Pages (up) 215-224
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Notes Approved no
Call Number refbase @ user @ Serial 3455
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