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Author Weckerly, Floyd W.
Title Social bonding and aggression in female Roosevelt elk Type Journal Article
Year 1999 Publication Canadian Journal of Zoology Abbreviated Journal Can J Zool
Volume 77 Issue (down) 9 Pages 1379-1384
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Abstract Abstract: The relationship between degree of social bonding (extent of association among individuals) and level of aggression in ruminants is unclear. I examined social bonding and aggression in three groups of female Roosevelt elk (Cervus elaphus roosevelti) over 2 years. I hypothesized that when animals are socially bonded, bouts of aggression will be won by the individual initiating the aggression, occur quickly, and involve little physical contact, and the level of aggression does not correlate with group size. The degree of social bonding was high among individuals in all groups. Dyads of known individuals were together >80% of the time. A permutation analysis indicated that groups with the observed sizes had <0.001 chance of random association, except on one occasion when the probability was 0.72 for one group. Using focal-animal sampling, aggressive interactions were won 72% of the time by the initiator, occurred quickly (<5 s), and involved little physical contact, and the level of aggression was not correlated with group size. The level of aggression was, however, significantly lower in one of the groups. This group may have had access to more abundant food resources than the other groups. Socially bonded elk conducted aggressive interactions in a fashion that did not disrupt social stability. Résumé : La relation entre le degré de liaison sociale (importance des associations entre individus) et l`agressivité n`est pas claire chez les ruminants. J`ai étudié les liaisons sociales et l`agressivité chez trois groupes de femelles du Cerf de Roosevelt (Cervus elaphus roosevelti) pendant 2 ans. J`ai posé en hypothèse que, chez les animaux liés socialement, la victoire devrait être emportée par l`individu qui entreprend l`agression, l`agression devrait être de courte durée, se faire avec peu de contacts physiques et la fréquence des agressions ne devrait pas être liée à la taille du groupe. Des paires d`individus passaient plus de 80% de leur temps ensemble. Une analyse des permutations a démontré que, chez les groupes des tailles observées, la probabilité d`une association aléatoire était de moins de 0,001, sauf en un cas où cette probabilité a été évaluée à 0,72 chez un groupe. Par échantillonnage directionnel, j`ai observé que les interactions agressives étaient gagnées par l`individu attaquant 72% du temps, étaient de courte durée (<5 s), se faisaient avec peu de contacts physiques et leur fréquence n`était pas reliée à la taille du groupe. Il y avait cependant moins d`agressivité chez l`un des groupes. Il se peut que ce groupe ait eu accès à plus de ressources alimentaires que les autres. Chez les cerfs liés par des liens sociaux, l`agressivité ne se manifeste pas de façon à déséquilibrer la stabilité sociale.
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Call Number Equine Behaviour @ team @ Serial 4268
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Author Koops, M.A.; Abrahams, M.V.
Title Assessing the Ideal Free Distribution: Do Guppies Use Aggression as Public Information about Patch Quality? Type Journal Article
Year 1999 Publication Ethology Abbreviated Journal Ethology
Volume 105 Issue (down) 9 Pages 737-746
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Abstract Aggression can be costly to foragers, yet some recent research suggests that foragers should use aggression as a cue to patch quality (the attractive aggression hypothesis). If aggression is predictive of patch quality, then the attractive aggression hypothesis predicts that the distribution of foragers should follow the distribution of aggression. If, instead, aggression is repulsive because it is costly, then the distribution of foragers should diverge from the distribution of aggression. We tested the attractive aggression hypothesis using female guppies, Poecilia reticulata, and found that the distribution of foragers followed the distribution of food, but was unaffected by the distribution of aggression. These data do not support the attractive aggression hypothesis, but instead suggest that the distribution of aggression is a consequence of the distribution of foragers, and that aggression is not used as public information about patch quality.
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Call Number Equine Behaviour @ team @ Serial 4271
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Author Hanggi, E.B.
Title Interocular transfer of learning In horses (Equus caballus) Type Journal Article
Year 1999 Publication Journal of Equine Veterinary Science Abbreviated Journal J Equine Vet Sci
Volume 19 Issue (down) 8 Pages 518-524
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Call Number Equine Behaviour @ team @ Serial 3564
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Author Taberlet, P.; Waits, L.P.; Luikart, G.
Title Noninvasive genetic sampling: look before you leap Type Journal Article
Year 1999 Publication Trends in Ecology & Evolution Abbreviated Journal Trends Ecol. Evol
Volume 14 Issue (down) 8 Pages 323-327
Keywords Hairs; Feces; Feathers; Allelic dropout; Individual identification; Conservation genetics; Behavioural ecology; Pilot study; Microsatellites; Probability of identity
Abstract Noninvasive sampling allows genetic studies of free-ranging animals without the need to capture or even observe them, and thus allows questions to be addressed that cannot be answered using conventional methods. Initially, this sampling strategy promised to exploit fully the existing DNA-based technology for studies in ethology, conservation biology and population genetics. However, recent work now indicates the need for a more cautious approach, which includes quantifying the genotyping error rate. Despite this, many of the difficulties of noninvasive sampling will probably be overcome with improved methodology.
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ISSN 0169-5347 ISBN Medium
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Call Number Equine Behaviour @ team @ Serial 6573
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Author Koolhaas, J.M.; Korte, S.M.; De Boer, S.F.; Van Der Vegt, B.J.; Van Reenen, C.G.; Hopster, H.; De Jong, I.C.; Ruis, M.A.W.; Blokhuis, H.J.
Title Coping styles in animals: current status in behavior and stress-physiology Type Journal Article
Year 1999 Publication Neuroscience & Biobehavioral Reviews Abbreviated Journal
Volume 23 Issue (down) 7 Pages 925-935
Keywords Coping; Aggression; Stress; Disease; Corticosterone
Abstract This paper summarizes the current views on coping styles as a useful concept in understanding individual adaptive capacity and vulnerability to stress-related disease. Studies in feral populations indicate the existence of a proactive and a reactive coping style. These coping styles seem to play a role in the population ecology of the species. Despite domestication, genetic selection and inbreeding, the same coping styles can, to some extent, also be observed in laboratory and farm animals. Coping styles are characterized by consistent behavioral and neuroendocrine characteristics, some of which seem to be causally linked to each other. Evidence is accumulating that the two coping styles might explain a differential vulnerability to stress mediated disease due to the differential adaptive value of the two coping styles and the accompanying neuroendocrine differentiation.
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Call Number Equine Behaviour @ team @ Serial 4416
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Author Parr, L.A.; de Waal, F.B.
Title Visual kin recognition in chimpanzees Type
Year 1999 Publication Nature Abbreviated Journal Nature
Volume 399 Issue (down) 6737 Pages 647-648
Keywords Animals; *Behavior, Animal; Face; Female; Male; Pan troglodytes/*physiology
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Notes PMID:10385114 Approved no
Call Number refbase @ user @ Serial 195
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Author de Waal, F.B.
Title Cultural primatology comes of age Type Journal Article
Year 1999 Publication Nature Abbreviated Journal Nature
Volume 399 Issue (down) 6737 Pages 635-636
Keywords Animals; *Behavior, Animal; *Culture; Humans; Pan troglodytes/*physiology
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ISSN 0028-0836 ISBN Medium
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Notes PMID:10385107 Approved no
Call Number refbase @ user @ Serial 196
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Author Whiten, A.; Goodall, J.; McGrew, W.C.; Nishida, T.; Reynolds, V.; Sugiyama, Y.; Tutin, C.E.; Wrangham, R.W.; Boesch, C.
Title Cultures in chimpanzees Type Journal Article
Year 1999 Publication Nature Abbreviated Journal Nature
Volume 399 Issue (down) 6737 Pages 682-685
Keywords Animals; *Behavior, Animal; Cognition; *Culture; Humans; Pan troglodytes/*physiology; Species Specificity
Abstract As an increasing number of field studies of chimpanzees (Pan troglodytes) have achieved long-term status across Africa, differences in the behavioural repertoires described have become apparent that suggest there is significant cultural variation. Here we present a systematic synthesis of this information from the seven most long-term studies, which together have accumulated 151 years of chimpanzee observation. This comprehensive analysis reveals patterns of variation that are far more extensive than have previously been documented for any animal species except humans. We find that 39 different behaviour patterns, including tool usage, grooming and courtship behaviours, are customary or habitual in some communities but are absent in others where ecological explanations have been discounted. Among mammalian and avian species, cultural variation has previously been identified only for single behaviour patterns, such as the local dialects of song-birds. The extensive, multiple variations now documented for chimpanzees are thus without parallel. Moreover, the combined repertoire of these behaviour patterns in each chimpanzee community is itself highly distinctive, a phenomenon characteristic of human cultures but previously unrecognised in non-human species.
Address Scottish Primate Research Group, School of Psychology, University of St Andrews, UK
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Notes PMID:10385119 Approved no
Call Number refbase @ user @ Serial 742
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Author de Waal, F.B.
Title The end of nature versus nurture Type Journal Article
Year 1999 Publication Scientific American Abbreviated Journal Sci Am
Volume 281 Issue (down) 6 Pages 94-99
Keywords Animals; *Behavior; Behavior, Animal; Ecology; *Environment; Ethology; Evolution; Female; *Genetics; Humans; Instinct; Learning; Male; Sex Characteristics; Twin Studies
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Address Living Links Center, Yerkes Regional Primate Research Center, Atlanta, USA
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ISSN 0036-8733 ISBN Medium
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Notes PMID:10614071 Approved no
Call Number refbase @ user @ Serial 192
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Author Czaran, T.
Title Game theory and evolutionary ecology: Evolutionary Games & Population Dynamics by J. Hofbauer and K. Sigmund, and Game Theory & Animal Behaviour, edited by L.A. Dugatkin and H.K. Reeve Type Journal Article
Year 1999 Publication Trends in Ecology & Evolution Abbreviated Journal Trends. Ecol. Evol
Volume 14 Issue (down) 6 Pages 246-247
Keywords Game theory; Evolutionary ecology; Population dynamics; Ethology
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Call Number refbase @ user @ Serial 485
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