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Author Parish, A.R.; De Waal, F.B.
Title The other “closest living relative”. How bonobos (Pan paniscus) challenge traditional assumptions about females, dominance, intra- and intersexual interactions, and hominid evolution Type Journal Article
Year (up) 2000 Publication Annals of the New York Academy of Sciences Abbreviated Journal Ann N Y Acad Sci
Volume 907 Issue Pages 97-113
Keywords Animals; *Evolution; Female; Hominidae/*physiology; Humans; *Interpersonal Relations; Male; Pan paniscus/*physiology; Sexual Behavior, Animal/*physiology
Abstract Chimpanzee (Pan troglodytes) societies are typically characterized as physically aggressive, male-bonded and male-dominated. Their close relatives, the bonobos (Pan paniscus), differ in startling and significant ways. For instance, female bonobos bond with one another, form coalitions, and dominate males. A pattern of reluctance to consider, let alone acknowledge, female dominance in bonobos exists, however. Because both species are equally “man's” closest relative, the bonobo social system complicates models of human evolution that have historically been based upon referents that are male and chimpanzee-like. The bonobo evidence suggests that models of human evolution must be reformulated such that they also accommodate: real and meaningful female bonds; the possibility of systematic female dominance over males; female mating strategies which encompass extra-group paternities; hunting and meat distribution by females; the importance of the sharing of plant foods; affinitive inter-community interactions; males that do not stalk and attack and are not territorial; and flexible social relationships in which philopatry does not necessarily predict bonding pattern.
Address Department of Anthropology, University College London, England
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ISSN 0077-8923 ISBN Medium
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Notes PMID:10818623 Approved no
Call Number refbase @ user @ Serial 189
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Author Clement, T.S.; Zentall, T.R.
Title Development of a single-code/default coding strategy in pigeons Type Journal Article
Year (up) 2000 Publication Psychological science : a journal of the American Psychological Society / APS Abbreviated Journal Psychol Sci
Volume 11 Issue 3 Pages 261-264
Keywords Animals; Attention; Columbidae; *Discrimination Learning; Female; Male; *Pattern Recognition, Visual; *Problem Solving; Retention (Psychology)
Abstract We tested the hypothesis that pigeons could use a cognitively efficient coding strategy by training them on a conditional discrimination (delayed symbolic matching) in which one alternative was correct following the presentation of one sample (one-to-one), whereas the other alternative was correct following the presentation of any one of four other samples (many-to-one). When retention intervals of different durations were inserted between the offset of the sample and the onset of the choice stimuli, divergent retention functions were found. With increasing retention interval, matching accuracy on trials involving any of the many-to-one samples was increasingly better than matching accuracy on trials involving the one-to-one sample. Furthermore, following this test, pigeons treated a novel sample as if it had been one of the many-to-one samples. The data suggest that rather than learning each of the five sample-comparison associations independently, the pigeons developed a cognitively efficient single-code/default coding strategy.
Address Department of Psychology, University of Kentucky, Lexington, KY 40506, USA
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ISSN 0956-7976 ISBN Medium
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Notes PMID:11273414 Approved no
Call Number refbase @ user @ Serial 246
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Author Janik, V.M.
Title Whistle matching in wild bottlenose dolphins (Tursiops truncatus) Type Journal Article
Year (up) 2000 Publication Science (New York, N.Y.) Abbreviated Journal Science
Volume 289 Issue 5483 Pages 1355-1357
Keywords Animals; Animals, Wild/physiology; Dolphins/*physiology; *Imitative Behavior; *Learning; *Social Behavior; *Vocalization, Animal
Abstract Dolphin communication is suspected to be complex, on the basis of their call repertoires, cognitive abilities, and ability to modify signals through vocal learning. Because of the difficulties involved in observing and recording individual cetaceans, very little is known about how they use their calls. This report shows that wild, unrestrained bottlenose dolphins use their learned whistles in matching interactions, in which an individual responds to a whistle of a conspecific by emitting the same whistle type. Vocal matching occurred over distances of up to 580 meters and is indicative of animals addressing each other individually.
Address School of Biology, University of St. Andrews, Bute Building, Fife KY16 9TS, UK
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ISSN 0036-8075 ISBN Medium
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Notes PMID:10958783 Approved no
Call Number refbase @ user @ Serial 550
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Author Fischer, J.; Cheney, D.L.; Seyfarth, R.M.
Title Development of infant baboons' responses to graded bark variants Type Journal Article
Year (up) 2000 Publication Proceedings. Biological sciences / The Royal Society Abbreviated Journal Proc Biol Sci
Volume 267 Issue 1459 Pages 2317-2321
Keywords *Animal Communication; Animals; Behavior, Animal; Female; Male; Models, Psychological; Papio/growth & development/*physiology; *Vocalization, Animal
Abstract We studied the development of infant baboons' (Papio cynocephalus ursinus) responses to conspecific 'barks' in a free-ranging population in the Okavango Delta, Botswana. These barks grade from tonal, harmonically rich calls into calls with a more noisy, harsh structure. Typically, tonal variants are given when the signaller is at risk of losing contact with the group or a particular individual ('contact barks'), whereas harsh variants are given in response to predators ('alarm barks'). We conducted focal observations and playback experiments in which we presented variants of barks recorded from resident adult females. By six months of age, infants reliably discriminated between typical alarm and contact barks and they responded more strongly to intermediate alarm calls than to typical contact barks. Infants of six months and older also recognized their mothers by voice. The ability to discriminate between different call variants developed with increasing age. At two and a half months of age, infants failed to respond at all, whereas at four months they responded irrespective of the call type that was presented. At six months, infants showed adult-like responses by responding strongly to alarm barks but ignoring contact barks. We concluded that infants gradually learn to attach the appropriate meaning to alarm and contact barks.
Address Department of Psychology, University of Pennsylvania, 3815 Walnut Street, Philadelphia, PA 19104, USA. fischerj@eva.mpg.de
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ISSN 0962-8452 ISBN Medium
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Notes PMID:11413649 Approved no
Call Number refbase @ user @ Serial 694
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Author Weeks, J.W.; Crowell-Davis, S.L.; Caudle, A.B.; Heusner, G.L.
Title Aggression and social spacing in light horse (Equus caballus) mares and foals Type Journal Article
Year (up) 2000 Publication Applied Animal Behaviour Science Abbreviated Journal Appl. Anim. Behav. Sci.
Volume 68 Issue 4 Pages 319-337
Keywords Dominance relationships; Horse; Sex differences; Social ontogeny; aggregation; parent-offspring interaction; social behavior
Abstract Aggression and social spacing were studied in 14 light horse mares and their foals living at pasture. Focal samples were collected on each mare-foal dyad for 6 to 10.5 h from 2 months of foal age until weaning at approximately 4 months of age. Observations on foals continued until approximately 6 months of age for 7.5 to 10.5 h per foal. Every 2 min the identities of all individuals within 5 m were recorded. All occurrences of agonistic behavior, and the participants, were recorded during the focal samples. In addition, during feeding of supplemental grain, all occurrences of agonistic behavior by all subjects were recorded. Significant correlations were found between mare rank and the rank of foals both prior to and after weaning. Before weaning, the rank of the foal was significantly correlated with birth order. No significant correlation between birth order and foal rank was found for the post-weaning hierarchy. An animal's gender had no significant effect on foal rank or the choice of preferred associate. Both prior to and after weaning, foals associated preferentially with the foal of their dam's most preferred associate. In addition, significant positive correlations were found between rank of mares and foals and the rate at which they directed aggression to other herd members. (C) 2000 Elsevier Science B.V.
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Notes Cited By (since 1996): 7; Export Date: 21 April 2007; Source: Scopus Approved no
Call Number refbase @ user @ Serial 788
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Author Houpt, K.; Marrow, M.; Seeliger, M.
Title A preliminary study of the effect of music on equine behavior Type Journal Article
Year (up) 2000 Publication Journal of Equine Veterinary Science Abbreviated Journal
Volume 20 Issue 11 Pages 691-737
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Call Number refbase @ user @ Serial 1988
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Author Lanier, J.L.; Grandin, T.; Green, R.D.; Avery, D.; McGee, K.
Title The relationship between reaction to sudden, intermittent movements and sounds and temperament Type Journal Article
Year (up) 2000 Publication Journal of Animal Science Abbreviated Journal J. Anim Sci.
Volume 78 Issue 6 Pages 1467-1474
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Call Number Equine Behaviour @ team @ Serial 2945
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Author Olesen, I.; Groen, A.F.; Gjerde, B.
Title Definition of animal breeding goals for sustainable production systems Type Journal Article
Year (up) 2000 Publication Journal of Animal Science Abbreviated Journal J. Anim Sci.
Volume 78 Issue 3 Pages 570-582
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Call Number Equine Behaviour @ team @ Serial 2934
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Author Ronald J. Schusterman; Colleen J. Reichmuth; David Kastak
Title How Animals Classify Friends and Foes Type Journal Article
Year (up) 2000 Publication Current Directions in Psychological Science Abbreviated Journal Curr. Dir. Psychol. Sci.
Volume 9 Issue Pages 1-6
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Call Number refbase @ user @ Serial 3477
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Author Byrne R.W.
Title - Animal Cognition in Nature, edited by Russell P. Balda, Irene M. Pepperberg and Alan C. Kamil Type Journal Article
Year (up) 2000 Publication Trends in Cognitive Sciences Abbreviated Journal Trends. Cognit. Sci.
Volume 4 Issue Pages 73-73
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Call Number refbase @ user @ Serial 3480
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