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Author Kurvers, R.H.J.M.; Eijkelenkamp, B.; van Oers, K.; van Lith, B.; van Wieren, S.E.; Ydenberg, R.C.; Prins, H.H.T.
Title Personality differences explain leadership in barnacle geese Type Journal Article
Year 2009 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.
Volume 78 Issue 2 Pages (down) 447-453
Keywords barnacle goose; boldness; Branta leucopsis; group behaviour; leadership; personality
Abstract Personality in animal behaviour describes the observation that behavioural differences between individuals are consistent over time and context. Studies of group-living animals show that movement order among individuals is also consistent over time and context, suggesting that some individuals lead and others follow. However, the relationship between leadership and personality traits is poorly studied. We measured several personality traits and leadership of individual barnacle geese, Branta leucopsis. We measured body size and scored the dominance of individuals living in a stable group situation before subjecting them to an open-field test, an activity test, a novel-object test, and a leadership test in which the order of the movement of individuals in pairs towards a feeding patch was scored. We found high repeatability for activity and novel-object scores over time. Leadership was strongly correlated with novel-object score but not with dominance rank, activity or exploration in an open field. These results provide evidence that leadership is closely related to some aspects of personality. Interestingly, an individual's arrival at the food patch was affected not only by the novel-object score of the focal individual, but also by the novel-object score of the companion individual, indicating that movement patterns of individuals living in groups are affected by the personality traits of other group members and suggesting that movement patterns of a group may be shaped by the mix of personality types present in the group.
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ISSN 0003-3472 ISBN Medium
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5172
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Author De Cremer, D.; van Dijk, E.
Title Leader--Follower Effects in Resource Dilemmas: The Roles of Leadership Selection and Social Responsibility Type Journal Article
Year 2008 Publication Group Processes Intergroup Relations Abbreviated Journal
Volume 11 Issue 3 Pages (down) 355-369
Keywords followers, leadership selection, resource allocations, resource dilemmas, social responsibility
Abstract Previous research on the allocation of scarce resources shows that when people are assigned labels of leader or follower in their group, leaders allocate more of the scarce resources to themselves than followers do. In three laboratory studies, we examine the idea that how people are selected for the leader role (i.e. election or appointment) determines whether leaders take more or equal shares (relative to followers) from a common resource. In a first experiment, we show that participants were more accepting of norm violating behavior by an appointed versus elected leader. In a second experiment, we show that when participants were assigned to a leader or follower role, allocations of appointed leaders differed significantly from those of elected leaders and followers, whereas there was no difference between the two latter conditions. Moreover, elected leaders were shown to feel more social responsibility than both appointed leaders and followers. In a final experiment, we show that when participants were primed with the concept of social responsibility (relative to a neutral condition) no difference in allocations between appointed and elected leaders emerged.
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Call Number Equine Behaviour @ team @ Serial 4805
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Author Sarova, R.; Spinka, M.; Panama, J.L.A.
Title Synchronization and leadership in switches between resting and activity in a beef cattle herd--A case study Type Journal Article
Year 2007 Publication Applied Animal Behaviour Science Abbreviated Journal Appl. Anim. Behav. Sci.
Volume 108 Issue 3-4 Pages (down) 327-331
Keywords Beef cattle; Activity synchronization; Leadership; Dominance
Abstract The mechanisms of activity synchronization in group living ungulates are not well understood. In a case study on herd of 15 Gasconne beef cows with calves observed during a total of 25 summer daylight periods in 2004 and 2005, we examined whether cows similar to each other in body weight or in reproductive status were more synchronized and whether the timing of activity switches were determined by specific leading animals. We calculated the synchronization of all possible pairs of cows in the herd and tested the effects of similarity in body weight and in reproductive status (lactating versus non-lactating) on synchronization in the pair. Further, we assessed whether any specific individuals, and especially the dominant cows, were more able, through their own activity switch, to incite another cow to follow shortly with her switch in activity. We found that body weight differences had a negative influence on pair synchronization (GLMM, F1,65 = 6.79; p < 0.05), but reproductive status did not affect the synchronization. Cows' individual identity explained only a small proportion (<2%) of variability in intervals between switches of subsequent cows. Furthermore, dominance status of an individual cow did not correlate with mean interval between her activity switches and activity switches of the next cow (lying down: Spearman correlation, rs = -0.16, n = 14, p > 0.10; standing up: Spearman correlation, rs = -0.38, n = 14, p > 0.10), indicating that there were no leading animals initiating switches in activity in our herd.
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Call Number Serial 2025
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Author Mech L.D.
Title Leadership in Wolf, Canis lupus, Packs. Type Journal Article
Year 2000 Publication Canadian Field-Naturalist Abbreviated Journal Can Field Nat
Volume 114 Issue 2 Pages (down) 259-263
Keywords Wolf, Canis lupus, leadership, behavior, foraging, movements, pup care, provisioning, sociality, reproduction, breeding, Northwest Territories.
Abstract I examine leadership in Wolf (Canis lupus) packs based on published observations and data gathered during summers from 1986 to 1998 studying a free-ranging pack of Wolves on Ellesmere Island that were habituated to my presence. The breeding male tended to initiate activities associated with foraging and travel, and the breeding female to initiate, and predominate in, pup care and protection. However, there was considerable overlap and interaction during these activities such that leadership could be considered a joint function. In packs with multiple breeders, quantitative information about leadership is needed.
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Call Number Equine Behaviour @ team @ Serial 4688
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Author Meese, G.B.; Ewbank, R.
Title Exploratory behaviour and leadership in the domesticated pig Type Journal Article
Year 1973 Publication The British Veterinary Journal Abbreviated Journal Br. Vet. J.
Volume 129 Issue 3 Pages (down) 251-259
Keywords Animals; Animals, Domestic; Behavior, Animal; Castration; *Exploratory Behavior; Female; *Leadership; Male; Sex Factors; Social Behavior; *Swine
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Language English Summary Language Original Title
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ISSN 0007-1935 ISBN Medium
Area Expedition Conference
Notes PMID:4728194 Approved no
Call Number Serial 2052
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Author Harcourt, J.L.; Ang, T.Z.; Sweetman, G.; Johnstone, R.A.; Manica, A.
Title Social feedback and the emergence of leaders and followers Type Journal Article
Year 2009 Publication Current Biology : CB Abbreviated Journal Curr Biol
Volume 19 Issue 3 Pages (down) 248-252
Keywords Analysis of Variance; Animals; Appetitive Behavior/physiology; *Feedback; Great Britain; *Leadership; Markov Chains; Models, Biological; Monte Carlo Method; Smegmamorpha/*physiology; *Social Behavior; Video Recording
Abstract In many animal groups, certain individuals consistently appear at the forefront of coordinated movements [1-4]. How such leaders emerge is poorly understood [5, 6]. Here, we show that in pairs of sticklebacks, Gasterosteus aculeatus, leadership arises from individual differences in the way that fish respond to their partner's movements. Having first established that individuals differed in their propensity to leave cover in order to look for food, we randomly paired fish of varying boldness, and we used a Markov Chain model to infer the individual rules underlying their joint behavior. Both fish in a pair responded to each other's movements-each was more likely to leave cover if the other was already out and to return if the other had already returned. However, we found that bolder individuals displayed greater initiative and were less responsive to their partners, whereas shyer individuals displayed less initiative but followed their partners more faithfully; they also, as followers, elicited greater leadership tendencies in their bold partners. We conclude that leadership in this case is reinforced by positive social feedback.
Address Department of Zoology, University of Cambridge, Cambridge, UK
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ISSN 0960-9822 ISBN Medium
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Notes PMID:19185497 Approved no
Call Number Equine Behaviour @ team @ Serial 5123
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Author Alexander, B.K.; Bowers, J.M.
Title Social organization of a troop of Japanese monkeys in a two-acre enclosure Type Journal Article
Year 1969 Publication Folia Primatologica; International Journal of Primatology Abbreviated Journal Folia Primatol (Basel)
Volume 10 Issue 3 Pages (down) 230-242
Keywords Animals; *Behavior, Animal; *Haplorhini; Leadership; *Social Behavior
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Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0015-5713 ISBN Medium
Area Expedition Conference
Notes PMID:4976202 Approved no
Call Number Serial 2055
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Author Menzel, E.W.J.
Title Communication about the environment in a group of young chimpanzees Type Journal Article
Year 1971 Publication Folia Primatologica; International Journal of Primatology Abbreviated Journal Folia Primatol (Basel)
Volume 15 Issue 3 Pages (down) 220-232
Keywords *Animal Communication; Animals; Environment; Fear; Leadership; *Pan troglodytes; Problem Solving; Social Behavior; Species Specificity; Vocalization, Animal
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Language English Summary Language Original Title
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ISSN 0015-5713 ISBN Medium
Area Expedition Conference
Notes PMID:5120654 Approved no
Call Number Equine Behaviour @ team @ Serial 4184
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Author Kawamura, S.
Title Aggression as studied in troops of Japanese monkeys Type Journal Article
Year 1967 Publication UCLA Forum in Medical Sciences Abbreviated Journal UCLA Forum Med Sci
Volume 7 Issue Pages (down) 195-223
Keywords *Aggression; Animals; Behavior, Animal; Defense Mechanisms; Female; *Haplorhini; Homosexuality; Humans; Japan; Leadership; Male; Play and Playthings; Sexual Behavior, Animal; Social Behavior; Socialization
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Language English Summary Language Original Title
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ISSN 0082-7134 ISBN Medium
Area Expedition Conference
Notes PMID:4972333 Approved no
Call Number Serial 2056
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Author Levin, L.E.; Grillet, M.E.
Title [Diversified leadership: a social solution of problems in schools of fish] Type Journal Article
Year 1988 Publication Acta Cientifica Venezolana Abbreviated Journal Acta Cient Venez
Volume 39 Issue 2 Pages (down) 175-180
Keywords Animals; Fishes; *Leadership; Reversal Learning/*physiology; *Social Behavior
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Language Spanish Summary Language Original Title Liderazgo diversificado: una solucion social de problemas en el cardumen
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0001-5504 ISBN Medium
Area Expedition Conference
Notes PMID:3251383 Approved no
Call Number Serial 2045
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