| Records |
| Author |
Liebal, K.; Pika, S.; Tomasello, M. |
| Title |
Social communication in siamangs (Symphalangus syndactylus): use of gestures and facial expressions |
Type |
Journal Article |
| Year |
2004 |
Publication |
Primates |
Abbreviated Journal |
Primates |
| Volume |
45 |
Issue  |
1 |
Pages |
41-57 |
| Keywords |
Age Factors; *Animal Communication; Animals; Animals, Zoo/*physiology; *Cognition; Female; Hylobates/*physiology; *Kinesics; Male; Sex Factors; *Social Behavior; Video Recording |
| Abstract |
The current study represents the first systematic investigation of the social communication of captive siamangs (Symphalangus syndactylus). The focus was on intentional signals, including tactile and visual gestures, as well as facial expressions and actions. Fourteen individuals from different groups were observed and the signals used by individuals were recorded. Thirty-one different signals, consisting of 12 tactile gestures, 8 visual gestures, 7 actions, and 4 facial expressions, were observed, with tactile gestures and facial expressions appearing most frequently. The range of the signal repertoire increased steadily until the age of six, but declined afterwards in adults. The proportions of the different signal categories used within communicative interactions, in particular actions and facial expressions, also varied depending on age. Group differences could be traced back mainly to social factors or housing conditions. Differences in the repertoire of males and females were most obvious in the sexual context. Overall, most signals were used flexibly, with the majority performed in three or more social contexts and almost one-third of signals used in combination with other signals. Siamangs also adjusted their signals appropriately for the recipient, for example, using visual signals most often when the recipient was already attending (audience effects). These observations are discussed in the context of siamang ecology, social structure, and cognition. |
| Address |
Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany. liebal@eva.mpg.de |
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| Language |
English |
Summary Language |
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Edition |
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| ISSN |
0032-8332 |
ISBN |
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| Notes |
PMID:14655035 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2812 |
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| Author |
Palagi, E.; Cordoni, G.; Borgognini Tarli, S. |
| Title |
Possible roles of consolation in captive chimpanzees (Pan troglodytes) |
Type |
Journal Article |
| Year |
2006 |
Publication |
American Journal of Physical Anthropology |
Abbreviated Journal |
Am J Phys Anthropol |
| Volume |
129 |
Issue |
1 |
Pages |
105-111 |
| Keywords |
Animals; Animals, Zoo/*physiology; Empathy; Female; Male; Pan troglodytes/*physiology; *Social Behavior; Stress/physiopathology/veterinary |
| Abstract |
Empathy is a necessary prerequisite for the occurrence of consolation. The term “consolation” contains a hypothesis about function, which is distress alleviation. The present study aims to confirm the occurrence of consolation in captive chimpanzees via the post-conflict/matched-control method (PC-MC) and to suggest its possible roles. We collected 273 PC-MC pairs in the group of Pan troglodytes housed in the ZooParc de Beauval (France). We confirmed the presence of consolatory contacts (mean level of consolation, 49.5% +/- 22.3% SEM) in the colony. Consolation rates were significantly higher than reconciliation levels (mean level of reconciliation, 28.9% +/- 16.8% SEM). The level of consolation was greater in the absence of reconciliation than in the presence of it, suggesting that consolation might be an alternative behavior. As friendship and relatedness did not influence the occurrence of consolation, they did not seem to be the best prerequisites for this behavioral mechanism, at least in this chimpanzee colony. Affinitive contacts with third parties were significantly more frequent when the victim called attention to itself during severe aggressions by screaming. These high-pitched sounds seem to be useful in eliciting aid from conspecifics, as occurs in young humans. The occurrence of consolation reduced the likelihood of further attacks among group-members. From this perspective, both victims and consolers most likely gain potential advantages by interacting with each other when aggression is particularly severe, reconciliation is not immediate, and consequently social stress reaches high levels. |
| Address |
Centro Interdipartimentale Museo di Storia Naturale e del Territorio, Universita di Pisa, 56010 Calci, Italy. betta.palagi@museo.unipi.it |
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English |
Summary Language |
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Edition |
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| ISSN |
0002-9483 |
ISBN |
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Expedition |
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| Notes |
PMID:16229027 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
2871 |
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| Author |
Palagi, E.; Paoli, T.; Tarli, S.B. |
| Title |
Reconciliation and consolation in captive bonobos (Pan paniscus) |
Type |
Journal Article |
| Year |
2004 |
Publication |
American journal of primatology |
Abbreviated Journal |
Am. J. Primatol. |
| Volume |
62 |
Issue |
1 |
Pages |
15-30 |
| Keywords |
Aggression/psychology; *Agonistic Behavior; Animals; Animals, Zoo/*psychology; *Conflict (Psychology); *Empathy; Female; Male; Pan paniscus/*psychology; Sex Factors; *Social Behavior; Time Factors |
| Abstract |
Although reconciliation in bonobos (Pan paniscus) has previously been described, it has not been analyzed heretofore by the postconflict (PC) match-control (MC) method. Furthermore, although reconciliation has been investigated before in this species, consolation has not. In this study we analyzed agonistic and affiliative contacts in all sex-class combinations to clarify and reevaluate the occurrence of reconciliation in bonobos via the PC-MC method. We also investigated the occurrence of consolation by analyzing the victims' triadic contact tendency (TCT), the influence of the sex of victims, and the relative occurrence of consolation and reconciliation. We collected 167 pairs of PC-MC observations in a captive group of bonobos (in Apeldoorn, The Netherlands). The conciliatory tendency (CCT) we obtained was tendentially lower than the mean value previously found for Yerkes captive chimpanzees. Close relationships, which were present in all female-female (FF) and some male-female (MF) dyads, positively affected reconciliation rates. When only adult PC-MC pairs (157) were considered, the mean TCTs and CCTs did not differ significantly. When we focused on types of PC affiliative contact, in the case of consolation we found a striking preference for sociosexual patterns. As to the relative occurrence of consolation and reconciliation, the highest level of the former was found in the absence of the latter. When reconciliation took place, consolation generally preceded it, suggesting that consolation may be a substitutive behavior. Our findings suggest that even if reconciliation remains the best option, consolation may be an alternative substitute for reconciliation that is used to buffer the tension originating from an unresolved conflict. Reconciliation and consolation are complex phenomena that are probably related to the life history of a group. Given that few studies have been conducted on this subject, we can not at this time make any generalizations regarding conflict resolution in certain species by comparing results among studies. |
| Address |
Centro Interdipartimentale Museo di Storia Naturale e del Territorio, Universita di Pisa, Pisa, Italy. betta.palagi@museo.unipi.it |
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English |
Summary Language |
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Edition |
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| ISSN |
0275-2565 |
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| Notes |
PMID:14752810 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
2876 |
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