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Author |
Drummond, H.; Canales, C. |
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Title |
Dominance between booby nestlings involves winner and loser effects |
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Journal Article |
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Year |
1998 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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55 |
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6 |
Pages |
1669-1676 |
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Two-chick broods of the blue-footed booby,Sula nebouxii, ordinarily exhibit stable dominance-subordinance, with the senior (first-hatched) chick habitually aggressive and the junior one habitually submissive (Nelson 1978,The Sulidae: Gannets and Boobies. London: Oxford University Press). But are both the subordinate and the dominant chick affected in their agonistic tendencies by early social experience? To answer this, we permanently paired subordinate and dominant chicks, 2-3 weeks old, with singletons (chicks lacking experience with a nestmate) by cross-fostering. During the first 4 h after pairing, subordinate chicks were seven times less aggressive than singletons and twice as likely to be submissive; dominant chicks were six times as aggressive as singletons. Although most subordinates consistently lost agonistic encounters during the first 10 days after pairing, the proportion of dominants that won decreased progressively until, by day 6, only about half of dominant chicks were winning. Early social experience has a strong but reversable training effect on both subordinates and dominants. Training as a subordinate showed more persistent effects than training as a dominant, possibly in part because our testing situation perpetuated subordinate training and counteracted dominant training. |
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861 |
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Author |
Dugatkin, L.A. |
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Title |
Tit for Tat, by-product mutualism and predator inspection: a reply to Connor |
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Journal Article |
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Year |
1996 |
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Animal Behaviour. |
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Anim. Behav. |
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51 |
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2 |
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455-457 |
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487 |
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Author |
Dugatkin, L.A. |
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Title |
A comment on Lafleur et al.'s re-evaluation of mate-choice copying in guppies |
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Journal Article |
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Year |
1998 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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56 |
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2 |
Pages |
513-514 |
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1812 |
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Dugatkin, L.A.; Wilson, D.S. |
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Choice experiments and cognition: a reply to Lamprecht & Hofer |
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1994 |
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Animal Behaviour. |
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Anim. Behav. |
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47 |
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6 |
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1459-1461 |
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479 |
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Dunbar, R.I.; Dunbar, E.P. |
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Title |
Contrasts in social structure among black-and-white colobus monkey groups |
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Journal Article |
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Year |
1976 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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24 |
Issue |
1 |
Pages |
84-92 |
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Keywords |
Agonistic Behavior; Animals; *Colobus; Copulation; Female; *Haplorhini; *Hierarchy, Social; Male; *Social Dominance |
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Three types of Colobus guereza groups may be distinguished on the bases of size and composition, namely small one-male groups, large, one-male groups and multi-male groups. The social structure of each type of group is described in terms of the distribution of non-agonistic interactions, the frequency and distribution of agonistic behaviour and the organization of the roles of vigilance, territorial defence and leadership. A number of differences are found between the group types which appear to be related to the differences in group size and composition. It is suggested that these group types represent stages in the life-cycle of colobus groups, and that such an interpretation may help to resolve some of the conflicting reports in the literature. |
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English |
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0003-3472 |
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PMID:817624 |
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2049 |
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Author |
Duncan, P.; Vigne, N. |
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Title |
The effect of group size in horses on the rate of attacks by blood-sucking flies |
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Journal Article |
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Year |
1979 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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27 |
Issue |
Part 2 |
Pages |
623-625 |
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refbase @ user @ |
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763 |
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Author |
Earley, R.L.; Druen, M.; Alan Dugatkin, L. |
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Title |
Watching fights does not alter a bystander's response towards naive conspecifics in male green swordtail fish, Xiphophorus helleri |
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Journal Article |
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Year |
2005 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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69 |
Issue |
5 |
Pages |
1139-1145 |
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Bystanders are capable of extracting cues from signalling interactions between others and appear to use information gained via eavesdropping when confronted with the watched individuals. A question that has gained little attention is whether observing fights affects bystander behaviour outside the context of interacting with the watched individuals. Our aim was to determine whether watching fights elicits general changes in bystander aggression levels in Xiphophorus helleri. We manipulated the bystanders' ability to witness encounters using clear, one-way-mirror and opaque partitions. After watching (or not watching) an initial contest, the bystanders were pitted against naive conspecifics instead of the animals they had seen fight. Observing fights did not alter the bystanders' propensity to initiate aggression, escalate, or win against naive individuals, indicating that bystanders do not experience general changes in aggressive behaviour after watching a fight. Earlier work in this species, however, has shown that bystanders respond in predictable ways to individuals they have witnessed winning or losing a fight. Taken together, these data support the notion that bystanders consistently modify their behaviour towards previously watched winners or losers in response to information gained via eavesdropping. We discuss our results in light of some recent work on the behavioural and endocrinological responses triggered by watching fights and suggest that comparative approaches to understanding networking phenomena may be productive. |
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394 |
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Eccles, T.R.; Shackleton, D.M. |
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Title |
Correlates and consequences of social status in female bighorn sheep |
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Journal Article |
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1986 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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34 |
Issue |
5 |
Pages |
1392-1401 |
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Dominance-subordinance relationships among a captive group of adule bighorn sheep (Ovis canadensis californiana) were studied from May 1977 to December 1978. Social interactions between females were brief in duration and infrequent. Although a dominance hierarchy was evident among the females, it was not linear. Horn length and body weight were not consistently correlated with social status. The highest ranking females were the most aggressive individuals, initiating more agonistic interactions than subordinates. Females with high social status did not have higher quality diets, lower activity costs, or higher productivity than low ranking females. |
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753 |
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Author |
Engh, A.L.; Esch, K.; Smale, L.; Holekamp, K.E. |
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Title |
Mechanisms of maternal rank 'inheritance' in the spotted hyaena, Crocuta crocuta |
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Journal Article |
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Year |
2000 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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60 |
Issue |
3 |
Pages |
323-332 |
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Maternal rank [`]inheritance', the process by which juveniles attain positions in the dominance hierarchy adjacent to those of their mothers, occurs in both cercopithecine primates and spotted hyaenas. Maternal rank is acquired in primates through defensive maternal interventions, coalitionary support and unprovoked aggression ([`]harassment') directed by adult females towards offspring of lower-ranking individuals. Genetic heritability of rank-related traits plays a negligible role in primate rank acquisition. Because the social lives of Crocuta and cercopithecine primates share many common features, we examined whether the same mechanisms might operate in both taxa to promote maternal rank [`]inheritance'. We observed a large clan of free-living spotted hyaenas in Kenya to test predictions of four mechanistic hypotheses. Hyaena rank acquisition did not appear to be directly affected by genetic heritability. Unprovoked aggression from adult female hyaenas was not directed preferentially towards low-ranking cubs. However, high-ranking mothers intervened on behalf of their cubs more frequently and more effectively than low-ranking mothers. Maternal interventions and supportive coalitions appeared to reinforce aggression directed at [`]appropriate' conspecific targets, whereas coalitionary aggression directed at cubs apparently functioned to extinguish their aggressive behaviour towards [`]inappropriate' targets. Young hyaenas and primates thus appear to [`]inherit' their mothers' ranks by strikingly similar mechanisms. |
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0003-3472 |
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Equine Behaviour @ team @ |
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5242 |
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Faria, J.J.; Dyer, J.R.G.; Tosh, C.R.; Krause, J. |
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Title |
Leadership and social information use in human crowds |
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Journal Article |
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Year |
2010 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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Volume |
79 |
Issue |
4 |
Pages |
895-901 |
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Keywords |
collective animal behaviour; group; human; inadvertent social cue; information; leadership |
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One of the big challenges for group-living animals is to find out who in a group has pertinent information (regarding food or predators) at any moment in time, because informed individuals may not be obviously recognizable to other group members. We found that individuals in human groups were capable of identifying those with information, and this identification increased group performance: the speed and accuracy of groups in reaching a target. Using video analysis we found how informed individuals might have been identified by other group members by means of inadvertent social cues (such as starting order, time spent following and group position). Furthermore, we were able to show that at least one of these cues, the group position of informed individuals, was indeed correlated with group performance. Our final experiment confirmed that leadership was even more efficient when the group members were given the identity of the leader. We discuss the effect of information status regarding the presence and identity of leaders on collective animal behaviour. |
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Equine Behaviour @ team @ |
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5192 |
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