| Records |
| Author |
Mrabet, O.; Es-Salah, Z.; Telhiq, A.; Aubert, A.; Liege, S.; Choulli, K.; Neveu, P.J. |
| Title |
Influence of gender and behavioural lateralisation on two exploratory models of anxiety in C3H mice |
Type |
Journal Article |
| Year |
2000 |
Publication |
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Abbreviated Journal |
Behav Processes |
| Volume |
52 |
Issue  |
1 |
Pages |
35-42 |
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| Abstract |
Behavioural lateralisation, which has been postulated to be an individual personality trait, is related to the activity of various physiological systems including the immune system. As lateralisation has been related to anxiety, which is known to influence immune reactivity, it can be hypothesized that the relation between lateralisation and immune reactivity involves individual behavioural patterns as they appear in exploratory-based anxiety models. In order to answer this question, a behavioural investigation focussing on exploratory activity was undertaken in male and female C3H mice previously selected for their paw preference. The observations were performed using two generic paradigms: elevated plus-maze and open field. Exploratory behaviour in the open field, but not in the plus-maze, was influenced by the interactive effect of gender and behavioural lateralisation. A significant difference between male and female mice was found in left-pawed but not in right-pawed nor ambidextrous animals, left-pawed female mice displaying the less exploratory behaviours. These results provide a first evidence of inter-individual variations in exploratory behaviours involving interaction between gender and lateralisation. |
| Address |
U.F.R. des Sciences Biologiques et Pharmaceutiques, Departement de Biologie, Faculte des Sciences, Universite Ibn Tofail, Kenitra, Morocco |
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English |
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0376-6357 |
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PMID:11011107 |
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no |
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Equine Behaviour @ team @ |
Serial |
4149 |
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| Author |
Jezierski T., Gorecka A. |
| Title |
Changes in the horses heart rate during different levels of social isolation |
Type |
Journal Article |
| Year |
2000 |
Publication |
Animal Science Papers and Reports |
Abbreviated Journal |
Anim. Sci. Pap. Rep. |
| Volume |
18 |
Issue |
1 |
Pages |
33-41 |
| Keywords |
horse; heart rate; human-animal relation |
| Abstract |
Social isolation in horses may be regarded as a stress factor which implies welfare problems. The aim of the experiment was to examine the effect of different levels of transient social isolation and human presence on the heart rate (HR) in horses. Seven horses were used and the experiment was conducted in a tether-stable without boxes. The HR was recorded electronically, continuously for 40 min during the following test situations: all horses in the stable; experimenter approaches the tested horse, other horses being untied and leaving the stable; tested horse staying alone or in the company of one or two stable-mates; the experimenter attempts to calm the isolated horse; outdoor auditory stimuli from other horses. The HR was significantly higher during the whole period of isolation, and depended on how many horses were left as company for the one tested. The highest HR was observed while other horses were leaving the stable and during perception of outdoor auditory stimuli from others. When in the company of two stable mates, the HR was elevated only while other horses were leaving the stable and during auditory stimuli from outdoors. Human presence evoked a significant increase in HR, probably due to conditioning of horses (expecting to be untied and allowed to join the others), irrespectively whether the tested horse was left alone or with one or two stable-mates. |
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Equine Behaviour @ team @ |
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4816 |
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Baker, P.J.; Funk, S.M.; Harris, S.; White, P.C.L. |
| Title |
Flexible spatial organization of urban foxes, Vulpes vulpes, before and during an outbreak of sarcoptic mange |
Type |
Journal Article |
| Year |
2000 |
Publication |
Animal Behaviour |
Abbreviated Journal |
Anim. Behav. |
| Volume |
59 |
Issue |
1 |
Pages |
127-146 |
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| Abstract |
The social and spatial organization of urban fox groups prior to and during an outbreak of sarcoptic mange was compared with predictions derived from the resource dispersion hypothesis (RDH). We investigated the availability of three key resources. Neither daytime rest sites nor breeding sites appeared to be limited in availability. The availability of food deliberately supplied by local householders was examined by questionnaire surveys. The daily and weekly amount of food supplied was greatly in excess of the minimum requirements of a pair of foxes, but was consistent between territories. The availability of this food source increased markedly as a result of more people feeding the foxes. In agreement with the RDH, group size prior to the outbreak of mange increased from 2.25 animals (N=4) to 6.57 animals (N=7). Before the outbreak of mange, two territories were divided. Increased scavenge availability on smaller territories may have promoted these changes. Excluding these spatial changes, territories were very stable between years. After the outbreak of mange, group size declined as a direct result of mange-induced mortality. Surviving animals increased their ranges only after neighbouring groups had died out. Ranges did not increase in size in response to a decline in food availability. Nor were the increases in range size associated with the relinquishment of parts of the existing territory. These postmange changes are contrary to the RDH. Three factors may have promoted these changes: the elimination of interstitial space, the forced dispersal of young or future division of the territory. |
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0003-3472 |
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Equine Behaviour @ team @ |
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6431 |
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| Author |
Nicol, C.J |
| Title |
Equine Stereotypies. In: Houpt K.A. (Ed.), |
Type |
Book Chapter |
| Year |
2000 |
Publication |
Recent Advances in Companion Animal Behavior Problems |
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International Veterinary Information Service |
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no |
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refbase @ user @ |
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477 |
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WAYNE L. LINKLATER & ELISSA Z. CAMERON |
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Distinguishing cooperation from cohabitation: the feral horse case |
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Journal Article |
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2000 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
59 |
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F17-F21 |
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refbase @ user @ |
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514 |
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| Author |
Aureli, Filippo; de Waal, F. B. M. |
| Title |
Natural conflict resolution |
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Book Whole |
| Year |
2000 |
Publication |
University of California Press |
Abbreviated Journal |
University of California Press. |
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Introduction FILIPPO AURELI & FRANS B. M. DE WAAL Menzel, C. R. 1993. van Schaik, C. P., & van Noordwijk, M. A. 1986. Communication by agonistic displays: What can games theory contribute to ethology? Chapais, B. 1995. Alliances as a means of competition in primates: Evolutionary, developmental, and cognitive aspects. Punishment in animal societies. Nature, 373: 209-216. |
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Berkley |
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533 |
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Gangemi, A.; Pisanelli, D.M.; Steve, G. |
| Title |
Understanding systematic conceptual structures in polysemous medical terms |
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Journal Article |
| Year |
2000 |
Publication |
Proceedings / AMIA ... Annual Symposium. AMIA Symposium |
Abbreviated Journal |
Proc AMIA Symp |
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Issue |
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Pages |
285-289 |
| Keywords |
*Linguistics; *Terminology; Vocabulary, Controlled |
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Polysemy is a bottleneck for the demanding needs of semantic data management. We suggest the importance of a well-founded conceptual analysis for understanding some systematic structures underlying polysemy in the medical lexicon. We present some cases studies, which exploit the methods (ontological integration and general theories) and tools (description logics and ontology libraries) of the ONIONS methodology defined elsewhere by the authors. This paper addresses an aspect (systematic metomymies) of the project we are involved in, which investigates the feasibility of building a large-scale ontology library of medicine that integrates the most important medical terminology banks. |
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Istituto di Tecnologie Biomediche, CNR Roma, Italy |
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English |
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1531-605X |
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| Notes |
PMID:11079890 |
Approved |
no |
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refbase @ user @ |
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613 |
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| Author |
Krause Hoare; Hemelrijk; Rubenstein |
| Title |
Leadership in fish shoals |
Type |
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 |
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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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2067 |
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| Author |
Whiten, A. |
| Title |
Social complexity and social intelligence |
Type |
Conference Article |
| Year |
2000 |
Publication |
Novartis Foundation Symposium |
Abbreviated Journal |
Novartis Found Symp |
| Volume |
233 |
Issue |
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Pages |
185-96; discussion 196-201 |
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Animals; Brain/anatomy & histology/*physiology; Humans; *Intelligence/physiology; Learning; Models, Psychological; Primates; *Social Behavior; Social Problems |
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When we talk of the 'nature of intelligence', or any other attribute, we may be referring to its essential structure, or to its place in nature, particularly the function it has evolved to serve. Here I examine both, from the perspective of the evolution of intelligence in primates. Over the last 20 years, the Social (or 'Machiavellian') Intelligence Hypothesis has gained empirical support. Its core claim is that the intelligence of primates is primarily an adaptation to the special complexities of primate social life. In addition to this hypothesis about the function of intellect, a secondary claim is that the very structure of intelligence has been moulded to be 'social' in character, an idea that presents a challenge to orthodox views of intelligence as a general-purpose capacity. I shall outline the principal components of social intelligence and the environment of social complexity it engages with. This raises the question of whether domain specificity is an appropriate characterization of social intelligence and its subcomponents, like theory of mind. As a counter-argument to such specificity I consider the hypothesis that great apes exhibit a cluster of advanced cognitive abilities that rest on a shared capacity for second-order mental representation. |
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School of Psychology, University of St Andrews, St Andrews, Fife KY16 9JU, UK |
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1528-2511 |
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| Notes |
PMID:11276903 |
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no |
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2084 |
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| Author |
Mercado E.; Killebrew D.A.; Pack A.A.; Macha I.V.B.; Herman L.M. |
| Title |
Generalization of 'same-different' classification abilities in bottlenosed dolphins |
Type |
Journal Article |
| Year |
2000 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
| Volume |
50 |
Issue |
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Pages |
79-94 |
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refbase @ user @ |
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3479 |
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