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Author (up) Chase, I.D. url  doi
openurl 
  Title The sequential analysis of aggressive acts during hierarchy formation: an application of the `jigsaw puzzle' approach Type Journal Article
  Year 1985 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.  
  Volume 33 Issue 1 Pages 86-100  
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  Abstract The `jigsaw puzzle' approach is a general method for investigating how interactions among individuals cumulate to form the overall patterns of dominance behaviour in groups. Here, the model is used to discover how aggressive interactions between pairs of individuals modify subsequent interactions with bystanders or third parties. The model indicates that four sequences of successive, aggressive acts are possible in component triads of larger groups: two ensure transitive attack relationships and two can lead to either transitive or intransitive relationships. An application of the model to 14 groups of four hens demonstrates that the two sequences guaranteeing transitivity make up 77% of all sequences. More specifically, hens attacking one group member usually go on to attack a second member, and hens receiving one attack frequently receive a second attack from a bystander. In contrast, an attacked hen rarely `redirects' an attack to a bystander, and a bystander rarely attacks a group member who has just attacked another individual. The application of the jigsaw puzzle approach to aggressive sequences in other species is discussed. Data available for several primate species corroborate the findings in hens and provide support for the method as a general tool for investigating the proximate mechanisms of hierarchy formation.  
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  Call Number refbase @ user @ Serial 856  
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Author (up) Chase, I.D.; Bartolomeo, C.; Dugatkin, L.A. url  doi
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  Title Aggressive interactions and inter-contest interval: how long do winners keep winning? Type Journal Article
  Year 1994 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.  
  Volume 48 Issue 2 Pages 393-400  
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  Abstract Abstract. Considerable evidence across many taxa demonstrates that prior social experience affects the outcome of subsequent aggressive interactions. Although the 'loser effect', in which an individual losing one encounter is likely to lose the next, is relatively well understood, studies of the 'winner effect', in which winning one encounter increases the probability of winning the next, have produced mixed results. Earlier studies differ concerning whether a winner effect exists, and if it does, how long it lasts. The variation in results, however, may arise from different inter-contest intervals and procedures for selecting contestants employed across previous studies. These methodological differences are addressed through a series of experiments using randomly selected winners and three different inter-contest intervals in the pumpkinseed sunfish, Lepomis gibbosus. The results indicate that a winner effect does in fact exist in pumpkinseed sunfish, but that it only lasts between 15 and 60 min. Based on these results, predictions about the behavioural dynamics of hierarchy formation are discussed, and it is suggested that it may be impossible, in principle, to predict the outcome of dominance interactions between some individuals before they are actually assembled to form a group. Finally, the possible mechanisms underlying the winner effect are explored.  
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  Call Number refbase @ user @ Serial 873  
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Author (up) Chase, I.D.; Tovey, C.; Murch, P. doi  openurl
  Title Two's Company, Three's a Crowd: Differences in Dominance Relationships in Isolated Versus Socially Embedded Pairs of Fish Type Journal Article
  Year 2003 Publication Behaviour Abbreviated Journal Behaviour  
  Volume 140 Issue 10 Pages 1193-1217  
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  Abstract We performed experiments with cichlid fish to test whether several basic aspects of dominance were the same in isolated pairs as in pairs within a social group of three or four. We found that the social context, whether a pair was isolated or within a group, strongly affected the basic properties of dominance relationships. In particular, the stability of relationships over time, the replication of relationships in successive meetings, and the extent of the loser effect were all significantly less in socially embedded pairs than in isolated pairs. We found no significant winner effect in either isolated or socially embedded pairs. These findings call into question many current approaches to dominance that do not consider social context as an important factor in dominance behavior. These findings also cast serious doubt on the validity of empirical and theoretical approaches based on dyadic interactions. Among these approaches are game theoretic models for the evolution of aggressive behavior, experimental designs evaluating how asymmetries in attributes influence the outcome of dominance  
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  Call Number refbase @ user @ Serial 857  
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Author (up) Chaya, L.; Cowan, E.; McGuire, B. url  doi
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  Title A note on the relationship between time spent in turnout and behaviour during turnout in horses (Equus caballus) Type Journal Article
  Year 2006 Publication Applied Animal Behaviour Science Abbreviated Journal Appl. Anim. Behav. Sci.  
  Volume 98 Issue 1-2 Pages 155-160  
  Keywords Horse; Behaviour; Turnout; Welfare  
  Abstract We examined if time spent in turnout influenced behaviour during turnout for horses maintained in stalls and given either 2 h/week (n = 7) or 12 h/week (n = 7) of turnout. Horses turned out for 2 h/week were more likely than those turned out for 12 h/week to trot, canter, and buck. Frequency of trotting and cantering was also higher and frequency of grazing lower in horses turned out for 2 h/week. These results have welfare implications and support previous studies showing that horses react to confinement with increased activity when not confined.  
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  ISSN 0168-1591 ISBN Medium  
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  Call Number Equine Behaviour @ team @ Serial 4815  
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Author (up) Cheney DL; Seyfarth RM openurl 
  Title Attending to behaviour versus attending to knowledge: examining monkeys' attribution of mental states Type Journal Article
  Year 1990 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.  
  Volume 40 Issue Pages 742  
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  Call Number Equine Behaviour @ team @ Serial 2987  
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Author (up) Cheney, D.L.; Seyfarth, R.M. doi  openurl
  Title Recognition of other individuals' social relationships by female baboons Type Journal Article
  Year 1999 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.  
  Volume 58 Issue 1 Pages 67-75  
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  Abstract We describe a series of playback experiments designed to test whether free-ranging baboons, Papio cynocephalus ursinus, recognize the calls of other group members and also associate signallers with their close genetic relatives. Pairs of unrelated females were played sequences of calls that mimicked a fight between their relatives. As controls, the same females heard sequences that involved either (1) only the more dominant female's relative or (2) neither of the females' relatives. When call sequences involved their relatives, subjects looked towards the speaker for a longer duration than when the sequences involved nonkin. When the sequences involved the other female's relative, they also looked towards that female. Subjects did not look towards one another when call sequences involved nonkin. Dominant subjects were more likely to supplant their subordinate partners following playbacks of sequences that mimicked a dispute between their relatives than following the two control trials. In contrast, both subjects were more likely to approach one another and to interact in a friendly manner following the two control trials than following the test trial. Results indicate that female baboons recognize the screams and threat grunts not only of their own close relatives but also of unrelated individuals. They also replicate previous studies in suggesting that female monkeys recognize the close associates of other individuals and adjust their interactions with others according to recent events involving individuals other than themselves. Copyright 1999 The Association for the Study of Animal Behaviour.  
  Address Departments of Biology and Psychology, University of Pennsylvania  
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  ISSN 0003-3472 ISBN Medium  
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  Notes PMID:10413542 Approved no  
  Call Number refbase @ user @ Serial 346  
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Author (up) Cheney, D.L.; Seyfarth, R.M. doi  openurl
  Title Reconciliatory grunts by dominant female baboons influence victims' behaviour Type Journal Article
  Year 1997 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.  
  Volume 54 Issue 2 Pages 409-418  
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  Abstract Following aggressive interactions, dominant female baboons, Papio cynocephalus ursinusoccasionally grunt to their victims. To examine the effect of these apparently reconciliatory grunts on victims' subsequent behaviour, a series of playback experiments was designed to mimic reconciliation. Victims were played their opponents' grunts in the minutes immediately following a fight and then observed for half an hour. After hearing these grunts, victims approached their former opponents and also tolerated their opponents' approaches at significantly higher rates than they did under control conditions. They were also supplanted by their opponents at significantly lower rates. By contrast, playbacks of control females' grunts did not influence victims' behaviour. Playbacks of reconciliatory grunts did not increase the rate at which opponents approached or initiated friendly interactions with their former victims. Playbacks of reconciliatory grunts, therefore, appeared to influence victims', but not opponents', perception of recent events.  
  Address Departments of Biology and Psychology, University of Pennsylvania  
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  ISSN 0003-3472 ISBN Medium  
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  Notes PMID:9268473 Approved no  
  Call Number refbase @ user @ Serial 347  
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Author (up) Cheney, D.L.; Seyfarth, R.M. openurl 
  Title Reconciliation and redirected aggression in vervet monkeys, Behaviour Type Journal Article
  Year 1989 Publication Behaviour Abbreviated Journal Behaviour  
  Volume 110 Issue Pages 258-275  
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  Call Number Equine Behaviour @ team @ Serial 4865  
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Author (up) Cheney, D.L.; Seyfarth, R.M. openurl 
  Title The recognition of social alliances among vervet monkeys Type Journal Article
  Year 1986 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.  
  Volume 34 Issue Pages 1722-1731  
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  Call Number Equine Behaviour @ team @ Serial 4864  
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Author (up) Chenoweth, P.J.; Chase, C.C.; Larsen, R.E.; Thatcher, M.-J.D.; Bivens, J.F.; Wilcox, C.J. url  doi
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  Title The assessment of sexual performance in young Bos taurus and Bos indicus beef bulls Type Journal Article
  Year 1996 Publication Applied Animal Behaviour Science Abbreviated Journal Appl. Anim. Behav. Sci.  
  Volume 48 Issue 3-4 Pages 225-235  
  Keywords Bos indicus; Sex behavior; Cattle reproduction; Mating behavior; Tests  
  Abstract Yearling beef bulls, representing different Bos indicus and Bos taurus breeds, were given two sexual performance assessments (libido score, number of services, time to first mount and time of sexual inactivity) at four test periods (January, April, July and October) in 1991 (Trial 1) and 1992 (Trial 2) at the Subtropical Agricultural Research Station, Brooksville, Florida. Breed and test period, as well as their interactions, influenced most results. Sexual performance assessments generally improved with age in Bos taurus breeds, but not in Bos indicus. The temperate Bos taurus breeds (Angus and Hereford) were most sexually active, the tropically adapted Bos taurus breeds (Senepol and Romosinuano) intermediate and the two Bos indicus breeds (Brahman and Nellore x Brahman) were least active. Service rates were generally low. Seasonal patterns in sexual performance were not apparent, with breed and year differences occurring. Although breeds showed consistent test results, the failure of Bos indicus bulls to service in any test, indicates either sexual immaturity, or inadequate procedures for assessment of sexual performance in this breed group.  
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  Notes Approved no  
  Call Number refbase @ user @ Serial 2865  
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