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Author |
Cooper, J.J. |
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Title |
Equine learning behaviour: Common knowledge and systematic research |
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Journal Article |
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Year |
2007 |
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Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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76 |
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24-26 |
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refbase @ user @ |
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630 |
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Ladewig, J. |
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Title |
Clever Hans is still whinnying with us |
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Journal Article |
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Year |
2007 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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76 |
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1 |
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20-21 |
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no |
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refbase @ user @ |
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631 |
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Author |
Hothersall, B.; Nicol, C. |
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Title |
Equine learning behaviour: accounting for ecological constraints and relationships with humans in experimental design |
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Journal Article |
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Year |
2007 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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76 |
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1 |
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45-48 |
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refbase @ user @ |
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632 |
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Creighton, E. |
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Title |
Equine learning behaviour: Limits of ability and ability limits of trainers |
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Journal Article |
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Year |
2007 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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76 |
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1 |
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43-44 |
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refbase @ user @ |
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633 |
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Author |
Goodwin, D. |
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Title |
Equine learning behaviour: What we know, what we don't and future research priorities |
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Journal Article |
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Year |
2007 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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76 |
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17-19 |
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refbase @ user @ |
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634 |
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Author |
Linklater, W.L. |
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Title |
Equine learning in a wider context--Opportunities for integrative pluralism |
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Journal Article |
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Year |
2007 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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76 |
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53-56 |
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no |
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refbase @ user @ |
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635 |
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Author |
Whiten, A.; van Schaik, C.P. |
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Title |
The evolution of animal 'cultures' and social intelligence |
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Journal Article |
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Year |
2007 |
Publication |
Philosophical transactions of the Royal Society of London. Series B, Biological sciences |
Abbreviated Journal |
Philos Trans R Soc Lond B Biol Sci |
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Volume |
362 |
Issue |
1480 |
Pages |
603-620 |
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Abstract |
Decades-long field research has flowered into integrative studies that, together with experimental evidence for the requisite social learning capacities, have indicated a reliance on multiple traditions ('cultures') in a small number of species. It is increasingly evident that there is great variation in manifestations of social learning, tradition and culture among species, offering much scope for evolutionary analysis. Social learning has been identified in a range of vertebrate and invertebrate species, yet sustained traditions appear rarer, and the multiple traditions we call cultures are rarer still. Here, we examine relationships between this variation and both social intelligence-sophisticated information processing adapted to the social domain-and encephalization. First, we consider whether culture offers one particular confirmation of the social ('Machiavellian') intelligence hypothesis that certain kinds of social life (here, culture) select for intelligence: 'you need to be smart to sustain culture'. Phylogenetic comparisons, particularly focusing on our own study animals, the great apes, support this, but we also highlight some paradoxes in a broader taxonomic survey. Second, we use intraspecific variation to address the converse hypothesis that 'culture makes you smart', concluding that recent evidence for both chimpanzees and orang-utans support this proposition. |
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Centre for Social Learning and Cognitive Evolution, School of Psychology, University of St Andrews, St Andrews KY16 9JP, UK |
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0962-8436 |
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PMID:17255007 |
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refbase @ user @ |
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729 |
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Author |
Hirsch, B.T. |
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Title |
Costs and benefits of within-group spatial position: a feeding competition model |
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Journal Article |
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Year |
2007 |
Publication |
The Quarterly review of biology |
Abbreviated Journal |
Q Rev Biol |
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Volume |
82 |
Issue |
1 |
Pages |
9-27 |
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Keywords |
Animals; Competitive Behavior/*physiology; Dominance-Subordination; Feeding Behavior/*physiology/*psychology; Population Dynamics; Predatory Behavior/*physiology |
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Abstract |
An animal's within-group spatial position has several important fitness consequences. Risk of predation, time spent engaging in antipredatory behavior and feeding competition can all vary with respect to spatial position. Previous research has found evidence that feeding rates are higher at the group edge in many species, but these studies have not represented the entire breadth of dietary diversity and ecological situations faced by many animals. In particular the presence of concentrated, defendable food patches can lead to increased feeding rates by dominants in the center of the group that are able to monopolize or defend these areas. To fully understand the tradeoffs of within-group spatial position in relation to a variety of factors, it is important to be able to predict where individuals should preferably position themselves in relation to feeding rates and food competition. A qualitative model is presented here to predict how food depletion time, abundance of food patches within a group, and the presence of prior knowledge of feeding sites affect the payoffs of different within-group spatial positions for dominant and subordinate animals. In general, when feeding on small abundant food items, individuals at the front edge of the group should have higher foraging success. When feeding on slowly depleted, rare food items, dominants will often have the highest feeding rates in the center of the group. Between these two extreme points of a continuum, an individual's optimal spatial position is predicted to be influenced by an additional combination of factors, such as group size, group spread, satiation rates, and the presence of producer-scrounger tactics. |
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Department of Anthropology, Stony Brook University Stony Brook, New York 11794, USA. BTHIRSCH@IC.SUNYSB.EDU |
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0033-5770 |
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PMID:17354992 |
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refbase @ user @ |
Serial |
803 |
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Author |
Li, F.-H.; Zhong, W.-Q.; Wang, Z.; Wang, D.-H. |
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Title |
Rank in a food competition test and humoral immune functions in male Brandt's voles (Lasiopodomys brandtii) |
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Journal Article |
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Year |
2007 |
Publication |
Physiology & behavior |
Abbreviated Journal |
Physiol. Behav. |
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90 |
Issue |
2-3 |
Pages |
490-495 |
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Animals; Antibody Formation/*physiology; Arvicolinae/immunology/*physiology; Competitive Behavior/*physiology; *Dominance-Subordination; Feeding Behavior/physiology; Hydrocortisone/blood; Male; *Social Dominance; Spleen/immunology/physiology |
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Social status can influence an animal's immune and reproductive functions, eventually leading to alterations in immunocompetence and reproductive success. Here, we report that rank assessed in a food competition test, considered as an index of social status, has significant influences on humoral immune functions in male Brandt's voles (Lasiopodomys brandtii) living in a group. Our data reveal a negative correlation of the spleen mass and serum antibody levels with social status, as well as a positive correlation of serum cortisol levels with social status. Males winning in food competition had a smaller spleen, a lower level of serum antibodies, and a higher level of serum cortisol than did their conspecific counterparts. These data indicate interactions between social status and humoral immune functions and might illustrate a trade-off between infection risks and reproductive success in male Brandt's voles. |
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State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, The Chinese Academy of Sciences, No. 25 Beisihuan Xilu, Zhongguancun, Haidian, Beijing 100080, China |
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0031-9384 |
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PMID:17141282 |
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refbase @ user @ |
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804 |
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Author |
Dubuc, C.; Chapais, B. |
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Title |
Feeding Competition in Macaca fascicularis : An Assessment of the Early Arrival Tactic |
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2007 |
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International Journal of Primatology |
Abbreviated Journal |
Int. J. Primatol. |
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male tolerance – alternative tactics – arrival order – dominance – Macaca fascicularis |
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In primate species with unidirectional dominance relationships, rank order restricts the access of nondominant females to clumped resources. However, females might attempt to bypass the rank order by reaching feeding sites before the highest ranking individuals (early arrival tactic) when there are net benefits. We therefore analyzed the order of arrival to the feeding site of the adult members of a captive group of long-tailed macaques. We used 2 experimental conditions that differed in the spatial distribution of a fixed amount of food (large vs. small patch). Though each condition induced contest competition, it was stronger in the small-patch condition. Arrival order does not correlate with dominance rank in either experimental condition. The α-male and α-female reached the feeding site 10-30 s after the beginning of the test. Some females seized on opportunities to reach the feeding site before them, especially in the large-patch condition. They used the early arrival tactic when the risks of aggression were relatively low, which subjects accomplished either by being dominant or by being nondominant but tolerated by the α-male. Social tolerance may provide individuals with an alternative means to obtain resources. In sum, variation in food abundance and distribution may affect the extent to which rank order determines order of arrival to feeding sites. A higher rank may confer priority in the choice of tactics, but not necessarily priority of access to the resources themselves. |
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