| Records |
| Author |
Sprigge, T.L.S. |
| Title |
Darwinian Dominion: Animal Welfare and Human Interests: Lewis Petrinovich, Cambridge, Mass, London, England, MIT Press, 1999, ix + 431 pages, {pound}31.50 (hc) |
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Journal Article |
| Year |
2000 |
Publication  |
J. Med. Ethics |
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| Volume |
26 |
Issue |
5 |
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412- |
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10.1136/jme.26.5.412 |
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Equine Behaviour @ team @ |
Serial |
2958 |
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| Author |
Aldezabal, A.; Garin, I. |
| Title |
Browsing preference of feral goats (Capra hircus L.) in a Mediterranean mountain scrubland |
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Journal Article |
| Year |
2000 |
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J Arid Env |
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44 |
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Equine Behaviour @ team @ Aldezabal2000 |
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6256 |
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| Author |
Riede, T.; Herzel, H.; Mehwald, D.; Seidner, W.; Trumler, E.; Böhme, G. |
| Title |
Nonlinear phenomena in the natural howling of a dog-wolf mix |
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Journal Article |
| Year |
2000 |
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J Acoust Soc Am |
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108 |
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Equine Behaviour @ team @ Riede2000 |
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6484 |
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| Author |
Vervaecke, H.; de Vries, H.; van Elsacker, L. |
| Title |
Dominance and its Behavioral Measures in a Captive Group of Bonobos (Pan paniscus) |
Type |
Journal Article |
| Year |
2000 |
Publication |
International Journal of Primatology |
Abbreviated Journal |
Int. J. Primatol. |
| Volume |
21 |
Issue |
1 |
Pages |
47-68 |
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| Abstract |
We investigated the existence of a social dominance hierarchy in the captive group of six adult bonobos at the Planckendael Zoo. We quantified the pattern of dyadic exchange of a number of behaviors to examine to what extent each behavior fits a linear rank order model. Following de Waal (1989), we distinguish three types of dominance: agonistic dominance, competitive ability and formal dominance. Fleeing upon aggression is a good measure of agonistic dominance. The agonistic dominance hierarchy in the study group shows significant and strong linearity. The rank order was: 1. female (22 yr), 2. female (15 yr)., 3. male (23 yr.), 4. female (15 yr.), 5. male (9 yr.), 6. male (10 yr.). As in the wild, the females occupy high ranks. There is prominent but nonexclusive female agonistic dominance. Teeth-baring does not fulfil the criteria of a formal submission signal. Peering is a request for tolerance of proximity. Since its direction within dyads is consistent with that of fleeing interactions, it is a useful additional measure to determine agonistic ranks in bonobos. In competitive situations, the females acquire more food than other group members do. The rank obtained from access to food resources differs from the agonistic rank due to female intrasexual social tolerance, expressed in food sharing. We typify the dominance styles in the group as female intrasexual tolerance and male challenging of rank differences. The agonistic rank order correlates significantly with age and has a strong predictive value for other social behaviors. |
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no |
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Equine Behaviour @ team @ |
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2197 |
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| Author |
Bickerton, D. |
| Title |
Resolving Discontinuity: A Minimalist Distinction between Human and Non-human Minds |
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Journal Article |
| Year |
2000 |
Publication |
Integr. Comp. Biol. |
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| Volume |
40 |
Issue |
6 |
Pages |
862-873 |
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| Abstract |
Our genotype is so similar to those of the African apes, and our last common ancestor with them so recent, that it seems impossible that human and non-human cognition should differ qualitatively. But the outputs of human cognition are unique in their limitless creativity and adaptability. Exaption resolves the apparent paradox. Assume that the power to create symbols emerges from stimulus-stimulus linkages and is latent in many animals, and that the structural side of language emerges from the argument structures inherent in the social calculus associated with reciprocal altruism. These adaptations confer the potential for language. However, creating complex messages requires uniquely long-lasting coherence of neural signals, which depends in turn on the large quantities of neurons unique to Homo. The only difference between human and non-human minds is that we can sustain longer and more complex trains of thought. All else (emotions, rational processes, even consciousness) could be exactly the same. |
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10.1093/icb/40.6.862 |
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Equine Behaviour @ team @ |
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2966 |
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| Author |
Dyer, F. C. |
| Title |
Individual cognition and group movement: insights from social insects. |
Type |
Book Chapter |
| Year |
2000 |
Publication |
Group Movement in Social Primates and Other Animals: Patterns, Processes, and Cognitive Implications. |
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University of Chicago Press |
Place of Publication |
Chicago |
Editor |
Garber, P.;Boinski, S. |
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no |
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Equine Behaviour @ team @ |
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4425 |
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| Author |
Houpt, K. A.; Kusonose, R. |
| Title |
Genetic of behaviour |
Type |
Book Chapter |
| Year |
2000 |
Publication |
Genetics of the Horse |
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Issue |
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Pages |
281-306 |
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Cab Intl |
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Wallingford Oxfordshire |
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Bowling,A. T. ; Ruvinsky, A. |
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978-0851994291 |
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no |
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Equine Behaviour @ team @ |
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5021 |
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| Author |
Krause Hoare; Hemelrijk; Rubenstein |
| Title |
Leadership in fish shoals |
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Journal Article |
| Year |
2000 |
Publication |
Fish and Fisheries |
Abbreviated Journal |
Fish Fish |
| Volume |
1 |
Issue |
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Pages |
82-89 |
| Keywords |
directional locomotion; fish schools; front fish; nutritional state; schooling; shoal leadership; swimming direction |
| Abstract |
Leadership is not an inherent quality of animal groups that show directional locomotion. However, there are other factors that may be responsible for the occurrence of leadership in fish shoals, such as individual differences in nutritional state between group members. It appears that front fish have a strong influence on directional shoal movements and that individuals that occupy such positions are often characterised by larger body lengths and lower nutritional state. Potential interactions between the two factors and their importance for positioning within shoals need further attention. Initiation of directional movement in stationary shoals and position preferences in mobile shoals need to be addressed separately because they are potentially subject to different constraints. Individuals that initiate a swimming direction may not necessarily be capable of the sustained high swimming performance required to keep the front position or have the motivation to do so, for that matter. More empirical and theoretical work is necessary to look at the factors controlling positioning behaviour within shoals, as well as overall shoal shape and structure. Tracking of marked individuals whose positioning behaviour is monitored over extended time periods of hours or days would be useful. There is an indication that shoal positions are rotated by individuals according to their nutritional needs, with hungry fish occupying front positions only for as long as necessary to regain their nutritional balance. This suggests that shoal members effectively take turns at being leaders. There is a need for three-dimensional recordings of shoaling behaviour using high-speed video systems that allow a detailed analysis of information transfer in shoals of different size. The relationship between leadership and shoal size might provide an interesting field for future research. Most studies to date have been restricted to shoals of small and medium size and more information on larger shoals would be useful. |
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no |
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2067 |
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| Author |
Allman, J.M. |
| Title |
Evolving brains. |
Type |
Book Whole |
| Year |
2000 |
Publication |
Evolving brains |
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How did the human brain with all its manifold capacities evolve from basic functions in simple organisms that lived nearly a billion years ago? John Allman addresses this question in Evolving Brains, a provocative study of brain evolution that introduces readers to some of the most exciting developments in science in recent years. |
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Scientific American Library |
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New York |
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978-0716760382 |
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no |
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Equine Behaviour @ team @ |
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5460 |
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| Author |
Devienne, M.F.; Guezennec, C.Y. |
| Title |
Energy expenditure of horse riding |
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Journal Article |
| Year |
2000 |
Publication |
European Journal of Applied Physiology |
Abbreviated Journal |
Eur J Appl Physiol |
| Volume |
82 |
Issue |
5-6 |
Pages |
499-503 |
| Keywords |
Adult; Animals; Energy Metabolism/*physiology; Exercise/*physiology; Exercise Test; Female; Hemodynamic Processes/physiology; Horses; Humans; Male; Oxygen Consumption/physiology; Respiratory Mechanics/physiology |
| Abstract |
Oxygen consumption (VO2), ventilation (VE) and heart rate (HR) were studied in five recreational riders with a portable oxygen analyser (K2 Cosmed, Rome) telemetric system, during two different experimental riding sessions. The first one was a dressage session in which the rider successively rode four different horses at a walk, trot and canter. The second one was a jumping training session. Each rider rode two horses, one known and one unknown. The physiological parameters were measured during warm up at a canter in suspension and when jumping an isolated obstacle at a trot and canter. This session was concluded by a jumping course with 12 obstacles. The data show a progressive increase in VO2 during the dressage session from a mean value of 0.70 (0.18) l x min(-1) [mean (SD)] at a walk, to 1.47 (0.28) l x min(-1) at a trot, and 1.9 (0.3) l x min(-1) at a canter. During the jumping session, rider VO2 was 2 (0.33) l x min(-1) with a mean HR of 155 beats x min(-1) during canter in suspension, obstacle trot and obstacle canter. The jumping course significantly enhanced VO2 and HR up to mean values of 2.40 (0.35) l x min(-1) and 176 beats x min(-1), respectively. The comparison among horses and riders during the dressage session shows differences in energy expenditure according to the horse for the same rider and between riders. During the jumping session, there was no statistical difference between riders riding known and unknown horses. In conclusion these data confirm that riding induces a significant increase in energy expenditure. During jumping, a mean value of 75% VO2max was reached. Therefore, a good aerobic capacity seems to be a factor determining riding performance in competitions. Regular riding practice and additional physical training are recommended to enhance the physical fitness of competitive riders. |
| Address |
Universite Paris XII-STAPS-61, Creteil, France. Mfdevienne@aol.com |
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English |
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1439-6319 |
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PMID:10985607 |
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Equine Behaviour @ team @ |
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3731 |
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