|
|
ListRecords (40 records )
|
|
|
|
dc:title
|
Enor ! da Vaest-Penn Republik Franz en Breiz-Izel en miz eost 1896 |
|
dc:title
|
Honneur ! au Président de la République française en Basse-Bretagne en août 1896 : poésie bretonne avec traduction française en regard |
|
dc:creator
|
Rolland, Charles |
|
dc:subject
|
|
|
dc:description
|
1 fasc. [12 p.]. ; 29 cm. |
|
dc:publisher
|
Montroulez [i.e. Morlaix] : en ty Lanoé, mouler, 2 rue Vras |
|
dc:contributor
|
|
|
dc:date
|
1896-01-01 |
|
dc:type
|
Version numérisée de l'ouvrage de Rennes 1, cote 17459 |
|
dc:format
|
application/pdf |
|
dc:identifier
|
http://ecm.univ-rennes1.fr/nuxeo/site/esupversions/c9c368b6-5e46-4a8d-a5dd-dfe18034e1ef
|
|
dc:language
|
fr |
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
Plans et profilz des principales villes de la province de Bretaigne, avec la carte generale et les particuliéres de chascun gouvernement d'icelles. |
|
dc:creator
|
Tassin, Christophe(15..-16..) |
|
dc:subject
|
|
|
dc:description
|
Ex-libris : Olivier du Breil de Pontbriand Marzan |
|
dc:publisher
|
A Paris, Sebastien Cramoisy |
|
dc:contributor
|
|
|
dc:date
|
1634-01-01 |
|
dc:type
|
text |
|
dc:format
|
application/pdf |
|
dc:identifier
|
http://ecm.univ-rennes1.fr/nuxeo/site/esupversions/fb300831-8f23-49a9-9928-4f7d517fce02
|
|
dc:language
|
fr |
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
Similarity of behavioral profiles among friends in early childhood |
|
dc:creator
|
Barbu, S. |
|
dc:subject
|
childhood |
|
dc:subject
|
behavioral profiles |
|
dc:subject
|
friendship |
|
dc:description
|
This study aimed to assess whether behavioral similarity is associated with social preferences in early childhood. Longitudinal observations of social interactions among children in a nursery school throughout a school year and behavioral sociometry were used to explore whether a) children who preferred to interact with some peers more than with other peers exhibited social behavioral profiles that were more similar to those of their preferred partners than to those of the
less or non-preferred peers and b) whether similarity between preferred partners increased over time. Our findings revealed that most of the children were highly selective in their peer affiliations, that is, children interacted with a small number of available peers. However, the similarity of behavioral profiles was not greater between children who preferred to interact together than between children who did not. The only differences in the similarity of behavioral profiles that were statistically significant were found for children who appeared the most frequently as non-preferred peers. The behavioral profiles of the non-preferred children were less similar to the children with whom they preferred to interact. Finally, although similarity did not increase between preferred partners over the school year, a general convergence was observed in behavioral profiles within the entire peer group; that is, on average, differences in classmates’ social behaviors were reduced over the school year. Findings are discussed from a developmental
perspective. Conceptual and methodological issues are also examined. |
|
dc:publisher
|
Simon Fraser University, CA |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:contributor
|
CNRS |
|
dc:contributor
|
Université de Rennes 1 |
|
dc:date
|
2007 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
Child Health and Education, 1, 27-40
|
|
dc:language
|
|
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
Social and emotional values of sound influence human (Homo sapiens) and non-human primate (Cercopithecus campbelli) auditory laterality |
|
dc:creator
|
Basile, M. |
|
dc:creator
|
Lemasson, A. |
|
dc:creator
|
Blois-Heulin, C. |
|
dc:subject
|
laterality |
|
dc:subject
|
audition |
|
dc:subject
|
primates |
|
dc:description
|
The last decades evidenced auditory laterality in vertebrates, offering new important insights for the understanding of the origin of human language. Factors such as the social (e.g. specificity, familiarity) and emotional value of sounds have been proved to influence hemispheric specialization. However, little is known about the crossed effect of these two factors in animals. In addition, human-animal comparative studies, using the same methodology, are rare. In our study, we adapted the head turn paradigm, a widely used non invasive method, on 8–9-year-old schoolgirls and on adult female Campbell’s monkeys, by focusing on head and/or eye orientations in response to sound playbacks. We broadcast communicative signals (monkeys: calls, humans: speech) emitted by familiar individuals presenting distinct degrees of social value (female monkeys: conspecific group members vs heterospecific neighbours, human girls: from the same vs different classroom) and emotional value (monkeys: contact vs threat calls; humans: friendly vs aggressive intonation). We evidenced a crossed-categorical effect of social and emotional values in both species since only ‘‘negative’’ voices from same class/group members elicited a significant auditory laterality (Wilcoxon tests: monkeys, T = 0 p = 0.03; girls: T = 4.5 p = 0.03). Moreover, we found differences between species as a left and right hemisphere preference was found respectively in humans and monkeys. Furthermore while monkeys almost exclusively responded by turning their head, girls sometimes also just moved their eyes. This study supports theories defending differential roles played by the two hemispheres in primates’ auditory laterality and evidenced that more systematic species comparisons are needed before raising evolutionary scenario. Moreover, the choice of sound stimuli and behavioural measures in such studies should be the focus of careful attention. |
|
dc:publisher
|
Public Library of Science |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:contributor
|
CNRS |
|
dc:contributor
|
Université de Rennes 1 |
|
dc:date
|
2009 |
|
dc:type
|
Article scientifique |
|
dc:format
|
application/pdf |
|
dc:identifier
|
PLoS ONE, 4 (7), e6295
|
|
dc:identifier
|
http://www.plosone.org/article/info:doi%2F10.1371%2Fjournal.pone.0006295
|
|
dc:language
|
|
|
dc:rights
|
L'éditeur autorise la publication de la version pdf dans une archive |
|
|
|
|
|
dc:title
|
Social laterality and "transversality" in two species of mangabeys: Influence of rank and implication for hemispheric specialization |
|
dc:creator
|
Baraud, I. |
|
dc:creator
|
Buytet, B. |
|
dc:creator
|
Bec, P. |
|
dc:creator
|
Blois-Heulin, C. |
|
dc:subject
|
laterality |
|
dc:subject
|
primates |
|
dc:subject
|
relative positions |
|
dc:subject
|
emotionalism |
|
dc:subject
|
hierarchy |
|
dc:subject
|
social interaction |
|
dc:description
|
Individuals in social groups monitor many relationships by adapting their activities to the sex, age, social status, behaviour as well as the position of conspecifics. Here, we investigated the influence of the relative positions of the members of two groups of mangabeys on social visual laterality (right/left) and ‘transversality’ (frontal/rear) in two contexts: (1) ‘one-to-one’ interactions and (2) a ‘one-to-many’ context allowing potential observation of all group members. We discuss our data in relation to (1) the influence of rank and (2) theories explaining lateralization of cerebral hemispheres. First, in ‘one-to-one’ situations, members of both groups were approached more frequently from their left than from their right, and red-capped mangabeys approached a group member more frequently from their right than from their left. In ‘one-to-many’ situations, red-capped mangabeys kept more group members in their right than their left frontal visual field. Conversely, the social ‘transversality’ bias was the same in both contexts: the frontal field was favoured. Second, approach side and relative positions differed according to social rank. Mangabeys that were approached more frequently from their left ranked relatively high. The higher an individual ranked, the more it left other group members behind it; on the contrary dominated mangabeys generally remained below other group members. Thus, social structures, as well as relationships within a group, appear to be good candidates to explain social laterality and ‘transversality’. |
|
dc:publisher
|
Elsevier |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:contributor
|
CNRS |
|
dc:contributor
|
Université de Rennes 1 |
|
dc:date
|
2009 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
Behavioural Brain Research, 2009, 198, 449-458
|
|
dc:language
|
|
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
The weight of the clan: Even in insects, social isolation can induce a behavioural syndrome |
|
dc:creator
|
Lihoreau, M. |
|
dc:creator
|
Brepson, L. |
|
dc:creator
|
Rivault, C. |
|
dc:subject
|
social isolation |
|
dc:subject
|
behaviour |
|
dc:subject
|
cockroach |
|
dc:subject
|
social evolution |
|
dc:description
|
Social isolation has dramatic consequences on the development of individuals of many vertebrate species, and it induces a set of behavioural disturbances rending them unable to process environmental as well as social stimuli appropriately. We hypothesized that isolation syndrome is a ubiquitous trait of social life that can be observed in a wide array of species, including invertebrates. Here we report that gregarious cockroaches (Blattella germanica) reared in isolation showed (i) stronger exploration-avoidance, (ii) reduced foraging activity, (iii) reduced willingness to interact socially, and (iv) reduced ability to assess mating partner quality than conspecifics reared in groups. We demonstrate the occurrence of a
behavioural syndrome induced by social isolation, similar to syndromes described in vertebrates, revealing the importance of social interactions and group-living in this non-eusocial insect species.We suggest that investigating social isolation effects on individual development should provide interesting results to assess social cohesion of species and thus constitute an additional tool for comparative studies focusing on the evolution of social life. |
|
dc:publisher
|
Elsevier |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:contributor
|
CNRS |
|
dc:contributor
|
Université de Rennes 1 |
|
dc:date
|
2009-01-01 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
Behavioural Processes, 2009, 82, 81-84
|
|
dc:language
|
|
|
dc:relation
|
Research Highlights in Nature, 460, 30 July: "Behaviour: Why 'there's never just one" |
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
Socially dependent auditory laterality in domestic horses (Equus caballus) |
|
dc:creator
|
Basile, M. |
|
dc:creator
|
Boivin, S. |
|
dc:creator
|
Boutin, A. |
|
dc:creator
|
Blois-Heulin, C. |
|
dc:creator
|
Hausberger, M. |
|
dc:creator
|
Lemasson, A. |
|
dc:subject
|
auditory processing |
|
dc:subject
|
behavioral asymmetry |
|
dc:subject
|
vocalization |
|
dc:subject
|
social familiarity |
|
dc:subject
|
playback |
|
dc:subject
|
attention |
|
dc:description
|
Laterality is now known to be an ubiquitous phenomenon among the vertebrates. Particularly, laterality of auditory processing has been demonstrated in a variety of species, especially songbirds and primates. Such a hemispheric specialization has been shown to depend on factors such as sound structure, species specificity and types of stimuli. Much less is known on the possible influence of social familiarity although a few studies suggest such an influence. Here we tested the influence of the degree of familiarity on the laterality of the auditory response in the domestic horse. This species is known for its social system and shows visible reactions to sounds, with one or two ears moving towards a sound source. By comparing such responses to the playback of different conspecific whinnies (group member, neighbor and stranger), we could demonstrate a clear left hemisphere (LH) preference for familiar neighbor calls while no preference was found for group member and stranger calls. Yet, we found an opposite pattern of ear side preference for neighbor versus stranger calls. These results are, to our knowledge, the first to demonstrate auditory laterality in an ungulate species. They open further lines of thought on the influence of the social “value” of calls and the listener’s arousal on auditory processing and laterality. |
|
dc:publisher
|
Springer Verlag |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:contributor
|
CNRS |
|
dc:contributor
|
Université de Rennes 1 |
|
dc:date
|
2009 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
Animal Cognition, 2009, 12, 611-619
|
|
dc:language
|
|
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
Foraging opportunity: A crucial criterion for horse welfare? |
|
dc:creator
|
Benhajali, H. |
|
dc:creator
|
Richard-Yris, M.-A. |
|
dc:creator
|
Ezzaouia, M. |
|
dc:creator
|
Charfi, F. |
|
dc:creator
|
Hausberger, M. |
|
dc:subject
|
welfare |
|
dc:subject
|
time-budget |
|
dc:subject
|
mare |
|
dc:subject
|
social behaviour |
|
dc:subject
|
foraging opportunities |
|
dc:description
|
This study aimed at determining the effect of the increase of foraging opportunities on the behaviour and welfare of breeding mares housed in individual boxes but allowed outside 6 h a day in a bare paddock. One hundred Arab breeding mares were divided into two groups of 50 according to the treatment and allowed outside in two bare paddocks at the same density (115 mare/ha) where water and shelter were provided. The treatment consisted in providing the opportunity to forage on hay. Twenty-minute animal focal samplings and scan samplings were used to determine the time budget of the mares during the period from 0900 to 1500 h and study their social behaviour. A total of 300 focal sampling (6000 min), 3300 individual scan sampling (6000 min) and 62 group observations (1240 min) corresponding to the 100 mares were recorded. Non-parametrictests were used to analyse data. Results showed that experimental mares spent more time feeding (65.12% ± 62.40% v. 29.75% ± 62.45%, P < 0.01) and less time in locomotion (11.70% ± 61.31% v. 23.56% ± 61.34%, P < 0.01), stand resting (11.76% ± 62.57% v. 27.52% ± 62.62%, P < 0.01) and alert standing (5.23% ± 61.2% v. 14.71% ± 61.23%, P <0.01). There was more bonding among experimental mares than control ones (26 v. 14, P < 0.05). Experimental mares showed more positive social interactions (P < 0.01) and less aggression (P < 0.01). These results suggest that giving densely housed mares foraging opportunities improves their welfare. |
|
dc:publisher
|
Cambridge University Press |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:contributor
|
CNRS |
|
dc:contributor
|
Université de Rennes 1 |
|
dc:date
|
2009 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
Animal, 2009, 3, 1308-1312
|
|
dc:language
|
|
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
Adult/young ratio influences song acquisition in female European starlings (Sturnus vulgaris) |
|
dc:creator
|
Bertin, A. |
|
dc:creator
|
Hausberger, M. |
|
dc:creator
|
Henry, L. |
|
dc:creator
|
Richard-Yris, M.-A. |
|
dc:subject
|
female starlings |
|
dc:subject
|
Sturnus vulgaris |
|
dc:subject
|
social context |
|
dc:subject
|
song learning |
|
dc:subject
|
social preferences |
|
dc:description
|
One parallel between humans and most songbirds is the fact that young require social interactions with an adult to acquire specific vocalizations. Songbirds are considered good models for comparative studies, although reports to date concern almost exclusively male songbirds. In addition, adult influence on vocal communication is generally investigated only in restricted social contexts (usually dyads). Here, we analysed song learning and spatial associations among young female starlings that were maintained for one year in dyads (1 adult/1 young), triads (2 adults/1 young) or larger group (7 young/2 adults). Segregation by age was seen in the triads and in the larger group. The influence of adults (proportion of songs copied from adults) decreased as social complexity increased. Unusual temporal features were observed in young maintained in triads and young neglected copying adult songs in the presence of peers. These results are among the first to explore the circumstances under which females learn and from whom they learn. They also add new insight to a wide range of questions about social influences on learning. |
|
dc:publisher
|
American Psychological Association |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:contributor
|
CNRS |
|
dc:contributor
|
Université de Rennes 1 |
|
dc:date
|
2009 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
Journal of Comparative Psychology, 2009, 123, 195-203
|
|
dc:language
|
|
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
Divergent selection for inherent fearfulness leads to divergent yolk steroids levels in quail |
|
dc:creator
|
Bertin, A. |
|
dc:creator
|
Richard-Yris, M.-A. |
|
dc:creator
|
Houdelier, C. |
|
dc:creator
|
Richard, S. |
|
dc:creator
|
Lumineau, S. |
|
dc:creator
|
Kotrschal, K. |
|
dc:creator
|
Möstl, E. |
|
dc:subject
|
inherent fearfulness |
|
dc:subject
|
selection |
|
dc:subject
|
yolk hormones |
|
dc:subject
|
androgens |
|
dc:subject
|
progesterone |
|
dc:description
|
Avian yolk steroid levels may vary according to maternal condition or environmental factors, causing epigenetic modulation of offspring phenotype. Here we test whether artificial selection based on divergent duration of tonic immobility (TI) in Japanese quail (i.e., divergent inherent fearfulness) is correlated with divergent levels of yolk steroids. We analysed yolk steroid levels and egg quality in quail selected for either long or short duration of TI. Yolk steroids, i.e., immunoreactive progesterone and androstenedione, were found to be significantly less concentrated in eggs of the high inherent fearfulness line compared to eggs of the low inherent fearfulness line. A similar trend was found with testosterone levels. Larger eggs with lighter eggshell were also found in more fearful quail. Hence, the selection for divergent fearfulness has led to correlated changes in yolk steroid levels and egg quality. These data suggest that hormones of maternal origin, egg quality and genetic background may all contribute to line differences in phenotype. A modulation of progesterone concentrations by selection for behaviour in egg yolk is reported here for the first time. Although the effect of this hormone on avian embryos remains unknown, we argue it may have significant effects on phenotypic outcome. |
|
dc:publisher
|
Brill Academic Publishers |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:contributor
|
CNRS |
|
dc:contributor
|
Université de Rennes 1 |
|
dc:date
|
2009 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
Behaviour, 2009, 146, 757-770
|
|
dc:language
|
|
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
Adult-young ratio, a major factor regulating social behaviour of young: A horse study |
|
dc:creator
|
Bourjade, M. |
|
dc:creator
|
de Boyer des Roches, A. |
|
dc:creator
|
Hausberger, M. |
|
dc:subject
|
social behaviour |
|
dc:subject
|
social interactions |
|
dc:subject
|
spatial relationships |
|
dc:subject
|
social segregation |
|
dc:description
|
Background: Adults play an important role in regulating the social behaviour of young individuals. However, a few pioneer studies suggest that, more than the mere presence of adults, their proportions in social groups affect the social development of young. Here, we hypothesized that aggression rates and social cohesion were correlated to adult-young ratios. Our biological model was naturally-formed groups of Przewalski horses, Equus f. przewalskii, varying in composition. Methodology/Principal Findings: We investigated the social interactions and spatial relationships of 12 one- and two-year old Przewalski horses belonging to five families with adult-young ratios (AYR) ranging from 0.67 to 1.33. We found striking variations of aggression rates and spatial relationships related to the adult-young ratio: the lower this ratio, the more the young were aggressive, the more young and adults segregated and the tighter the young bonded to other young. Conclusion/Significance: This is the first study demonstrating a correlation between adult-young ratios and aggression
rates and social cohesion of young individuals in a naturalistic setting. The increase of aggression and the emergence of social segregation in groups with lower proportions of adults could reflect a related decrease of the influence of adults as regulators of the behaviour of young. This social regulation has both theoretical and practical implications for
understanding the modalities of the influence of adults during ontogeny and for recommending optimal settings, as for instance, for schooling or animal group management.
|
|
dc:publisher
|
Public Library of Science |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:contributor
|
CNRS |
|
dc:contributor
|
Université de Rennes 1 |
|
dc:date
|
2009 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
PLoS ONE, 2009, 4 (3), 4888
|
|
dc:identifier
|
http://www.plosone.org/article/info:doi%2F10.1371%2Fjournal.pone.0004888
|
|
dc:language
|
|
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
Decision-making in Przewalski horses (Equus ferus przewalskii) is driven by the ecological contexts of collective movements |
|
dc:creator
|
Bourjade, M. |
|
dc:creator
|
Thierry, B. |
|
dc:creator
|
Maumy, R. |
|
dc:creator
|
Petit, O. |
|
dc:subject
|
free-ranging population |
|
dc:subject
|
habitat use |
|
dc:subject
|
group activity |
|
dc:subject
|
decision-making processes |
|
dc:description
|
We addressed decision-making processes in the collective movements of two groups of Przewalski horses (Equus ferus przewalskii) living in a semi free-ranging population. We investigated whether different patterns of group movement are related to certain ecological contexts (habitat use and group activity) and analysed the possible decision-making processes involved. We found two distinct patterns; ‘single-bout’ and ‘multiplebout’ movements occurred in both study groups. The movements were defined by the occurrence of collective stops between bouts and differed by their duration, distance covered and ecological context. For both movements, we found that a preliminary period involving several horses occurred before departure. In single-bout movements, all group members rapidly joined the first moving horse, independently of the preliminary period. In multiple-bout movements, however, the joining process was longer; in particular when the number of decision-makers and their pre-departure behaviour before departure increased. Multiplebout movements were more often used by horses to switch habitats and activities. This observation demonstrates that the horses need more time to resolve motivational conflicts before these departures. We conclude that decision-making in Przewalski horses is based on a shared consensus process driven by ecological determinants. |
|
dc:publisher
|
Wiley-Blackwell |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:date
|
2009 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
Ethology, 2009, 118, 321-330
|
|
dc:language
|
|
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
Eye preference in Campbell's monkeys (Cercopithecus c. campbelli) |
|
dc:creator
|
Chapelain, A.-S. |
|
dc:creator
|
Blois-Heulin, C. |
|
dc:subject
|
visual laterality |
|
dc:subject
|
cercopithecinae |
|
dc:subject
|
eye choice |
|
dc:description
|
Brain lateralization has been the matter of extensive research over the last centuries, but it remains an unsolved issue. While hand preferences have been extensively studied, very few studies have investigated laterality of eye use in non-human primates. We examined eye preference in 14 Campbell’s monkeys (Cercopithecus c. campbelli). We assessed eye preference to look at a seed placed inside a tube using monocular vision. Eye use was recorded for 100 independent and non-rewarded trials per individual. All of the 14 monkeys showed very strong preferences in the choice of the eye used to look inside the tube (mean preference: 97.6%). Eight subjects preferred the right eye and six subjects preferred the left eye. The results are discussed in light of previous data on eye preference in primates, and compared to data on hand preference from these subjects. Our findings would support the hypothesis for an early emergence of lateralization for perceptual processes compared to manual motor functions. |
|
dc:publisher
|
Springer Verlag |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:contributor
|
CNRS |
|
dc:contributor
|
Université de Rennes 1 |
|
dc:date
|
2009 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
Animal Cognition, 2009, 12, 13-19
|
|
dc:language
|
|
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
Visual laterality responses to different emotive stimuli by red-capped mangabeys, Cercocebus torquatus torquatus |
|
dc:creator
|
Delatude, M. |
|
dc:creator
|
Demange, M. |
|
dc:creator
|
Bec, P. |
|
dc:creator
|
Blois-Heulin, C. |
|
dc:subject
|
perceptual laterality |
|
dc:subject
|
emotionalism |
|
dc:subject
|
palatability |
|
dc:subject
|
valence theory |
|
dc:description
|
Hemispheric asymmetry in emotional perception has been put forward by different theories as the right hemisphere theory or the valence theory. But no consensus was found about the role played by both hemispheres. So, in order to test the different theories, we investigated preferential use of one eye in red-capped mangabeys, at the individual as well as at the group level. In this study we investigated the influence of the emotional value of stimuli on the direction and strength of visual preference of 14 red-capped mangabeys. Temporal stability of the bias of use of a given eye was evaluated by comparing our current results to those obtained 2.5 months previously. Two experimental devices, a tube and a box, tested five different stimuli: four food types varying in palatability and a neutral stimulus. The subjects’ food preferences were evaluated before testing the laterality. The mangabeys used their left eyes predominantly at the group level for the tube task. The majority of the subjects showed a visual preference at the individual level for the box task, but this bias was not present at the group level. As the palatability of the stimuli increased, the number of lateralized subjects and the number of subjects using preferentially their left eye increased. Similarly, the strength of laterality was related to food preference. Strength of laterality was significantly higher for subjects using their left eye than for subjects using their right eye. Preferential use of a given eye was stable over short periods 2.5 months later. Our data agree with reports on visual laterality for other species. Our results support the valence theory of a hemispheric sharing of control of emotions in relation to their emotional value. |
|
dc:publisher
|
Springer Verlag |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:contributor
|
CNRS |
|
dc:contributor
|
Université de Rennes 1 |
|
dc:date
|
2009 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
Animal Cognition, 2009, 12, 31-42
|
|
dc:language
|
|
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
Social influences on circadian behavioural rhythms in vertebrates |
|
dc:creator
|
Favreau, A. |
|
dc:creator
|
Richard-Yris, M.-A. |
|
dc:creator
|
Bertin, A. |
|
dc:creator
|
Houdelier, C. |
|
dc:creator
|
Lumineau, S. |
|
dc:subject
|
circadian rhythm |
|
dc:subject
|
social cues |
|
dc:subject
|
entrainment |
|
dc:subject
|
mutual synchronisation |
|
dc:subject
|
relative coordination |
|
dc:subject
|
vertebrates |
|
dc:description
|
Although photoperiodic cycles are known to be the most powerful entraining agent of circadian rhythms in homeotherms, social factors can also play a role in synchronising activity rhythms. Here we review social influences on circadian behavioural rhythms in vertebrates focusing on the types of possible effects and the types of stimuli eliciting these effects. Social factors can strongly influence rhythms by inducing full entrainment, mutual synchronisation or desynchronisation. Such effects have been observed in social species living in a constrained environment, between mother and her offspring in altricial mammals, between sexual partners or competitors, and between social partners linked by hierarchical relationship. However, the presence of social partners sometimes induces weaker influences, such as partial entrainment or relative coordination with masking effects. Low efficiency of social cues on rhythms has also been reported between social and sexual partners. The stimuli involved in these social influences were olfactory stimuli or social stress in rodents and auditory stimuli in birds and mammals. Social cues sometimes have no significant effects on rhythms, not only in solitary species, but also in social species. We discuss the technical problems with such research, in particular the difficulty of recording simultaneously the activities of several individuals. Finally, we point out that knowledge of a species behaviour and life history may significantly improve chronobiological research. Social characteristics and different levels of organization (group, relationship or individual levels) in particular, should be considered when studying social influences on behavioural rhythms. |
|
dc:publisher
|
Elsevier |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:contributor
|
CNRS |
|
dc:contributor
|
Université de Rennes 1 |
|
dc:date
|
2009 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
Animal Behaviour, 2009, 77, 983-989
|
|
dc:language
|
|
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
Individual behavioural rhythmicity is linked to social motivation in Japanese quail |
|
dc:creator
|
Formanek, L. |
|
dc:creator
|
Richard-Yris, M.-A. |
|
dc:creator
|
Arnould, C. |
|
dc:creator
|
Houdelier, C. |
|
dc:creator
|
Lumineau, S. |
|
dc:subject
|
bird |
|
dc:subject
|
circadian rhythm |
|
dc:subject
|
daily rhythm |
|
dc:subject
|
feeding activity |
|
dc:subject
|
social motivation |
|
dc:subject
|
ultradian rhythm |
|
dc:description
|
This experiment explored links between individual social traits and behavioural rhythms by comparing the feeding activity rhythms of HSR (high social reinstatement) Japanese quail that will cover long distances to reach conspecifics, to those of LSR (low social reinstatement) quail that will cover only short distances to reach conspecifics. We evaluated the functioning of their circadian and ultradian clocks under constant darkness (DD), and then under photoperiodic conditions (LD). Our results revealed that, under DD conditions, the circadian periods of HSR quail were closer to 24 h than those of LSR quail. Under LD conditions, the daily rhythm of HSR quail was clearer than that of LSR quail. HSR quail synchronized faster and better to the environmental LD cycle than LSR quail. Our results also showed that, under DD conditions, more LSR than HSR quail expressed ultradian rhythmic phenotypes and that the ultradian rhythm of LSR quail was clearer than that of LSR quail. Under LD conditions, these differences between HSR and LSR quail showed the same tendencies. LSR quail seem to present a more functional ultradian system, and thus could possibly synchronise better on an ultradian environmental cue than HSR quail. Our study demonstrated a link between individual rhythmicity and social traits at an
intra-specific level. It revealed complex relationships between ultradian, circadian, and daily rhythms and level of social motivation in Japanese quail.
|
|
dc:publisher
|
Elsevier |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:contributor
|
CNRS |
|
dc:contributor
|
Université de Rennes 1 |
|
dc:date
|
2009 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
Applied Animal Behaviour Science, 2009, 121 (2), 126-133
|
|
dc:language
|
|
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
Epigenetic maternal effects on endogenous rhythms in precocial birds |
|
dc:creator
|
Formanek, L. |
|
dc:creator
|
Richard-Yris, M.-A. |
|
dc:creator
|
Houdelier, C. |
|
dc:creator
|
Lumineau, S. |
|
dc:subject
|
maternal influence |
|
dc:subject
|
development |
|
dc:subject
|
circadian rhythm |
|
dc:subject
|
ultradian rhythm |
|
dc:subject
|
Japanese quail |
|
dc:description
|
Development involves interactions between genetic constraints and environmental influences. Vertebrate mothers are generally the first individuals young animals encounter and interact with. Thus, their role is primordial during ontogeny. The present study evaluated non-genomic effects of mothers on the development of rhythms of precocial Japanese quail (Coturnix c. japonica). First, we investigated the influence of mothering on the ontogeny of endogenous rhythms of young. We compared circadian and ultradian rhythms of feeding activity of quail reared with or without adoptive mothers. More brooded than non-brooded quail presented a circadian rhythm and/or an ultradian rhythm. Thus, mothers’ presence during the normal brooding period favours, in the long term, the expression of rhythms in their young. Second, we investigated the influence of mothers’ rhythmic phenotype on the development of the endogenous rhythms of young by comparing quail brooded by circadian-rhythmic adoptive mothers (R) to quail brooded by circadian-arrhythmic adoptive mothers (A). More R-brooded than A-brooded quail expressed a circadian rhythm. Circadian rhythm clarities were greater in R-brooded quail than in A-brooded quail. Ultradian rhythmicity differed neither between R and A-brooded quail nor between R and A adoptive mothers. Thus, the rhythmic phenotypes of quail mothers influence the rhythmic phenotypes of their young. Our results demonstrate that mothers of precocial birds influence epigenetically the endogenous rhythms ontogeny of the young they raise. |
|
dc:publisher
|
Taylor & Francis |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:contributor
|
CNRS |
|
dc:contributor
|
Université de Rennes 1 |
|
dc:date
|
2009 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
Chronobiology International, 2009, 26, 396-414
|
|
dc:language
|
|
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
L'entraînement maternel prénatal chez les mammifères |
|
dc:creator
|
Formanek, L. |
|
dc:creator
|
Richard-Yris, M.-A. |
|
dc:creator
|
Houdelier, C. |
|
dc:creator
|
Lumineau, S. |
|
dc:subject
|
influences maternelles |
|
dc:subject
|
rythmicité |
|
dc:subject
|
entraînement prénatal |
|
dc:description
|
Nous nous proposons de réaliser une revue des connaissances actuelles sur les influences que la mère peut avoir sur la rythmicité du foetus pour tenter de tirer des conclusions sur les processus d’entraînement foetal. Dans un deuxième temps, nous nous intéresserons à l’impact que peut avoir cet entraînement prénatal sur la rythmicité de l’individu après sa naissance. |
|
dc:publisher
|
Société Francophone de Chronobiologie |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:contributor
|
CNRS |
|
dc:contributor
|
Université de Rennes 1 |
|
dc:date
|
2009 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
Rythmes, 2009, 40, 71-76
|
|
dc:language
|
|
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
Environmental factors influence language development in children with autism spectrum disorders |
|
dc:creator
|
Grandgeorge, M. |
|
dc:creator
|
Hausberger, M. |
|
dc:creator
|
Tordjman, S. |
|
dc:creator
|
Deleau, M. |
|
dc:creator
|
Lazartigues, A. |
|
dc:creator
|
Lemonnier, E. |
|
dc:subject
|
sensori-motor development |
|
dc:subject
|
language disorders |
|
dc:subject
|
social factors |
|
dc:subject
|
language development |
|
dc:description
|
Background: While it is clearly admitted that normal behavioural development is determined by the interplay of genetic and environmental influences, this is much less the case for psychiatric disorders for which more emphasis has been given in the past decades on biological determinism. Thus, previous studies have shown that Autistic Spectrum Disorders (ASD) were not affected by parental style. However, animal research suggests that different behavioural traits can be differentially affected by genetic/environmental factors. Methodology/ Principal Findings: In the present study we hypothesized that amongst the ASD, language disorders may be more sensitive to social factors as language is a social act that develops under social influences. Using the Autism Diagnostic Interview-Revised, we compared the early characteristics of sensori-motor and language development in a large sample of children with ASD (n = 162) with parents belonging to different levels of education. The results showed that children raised by parents with a high level of education displayed earlier language development. Moreover, they showed earlier first words and phrases if their mother was at a high level of education, which reveals an additional gender effect. Conclusions/Significance: To our knowledge this study may trigger important new lines of thought and research, help equilibrate social and purely biological perspectives regarding ASD and bring new hopes for environmentally based therapies. |
|
dc:publisher
|
Public Library of Science |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:contributor
|
CNRS |
|
dc:contributor
|
Université de Rennes 1 |
|
dc:date
|
2009 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
PLoS ONE, 2009, 4 (4), e4863
|
|
dc:identifier
|
http://www.plosone.org/article/info:doi%2F10.1371%2Fjournal.pone.0004683
|
|
dc:language
|
|
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
Could work be a source of behavioural disorders? A study in horses |
|
dc:creator
|
Hausberger, M. |
|
dc:creator
|
Gautier, E. |
|
dc:creator
|
Biquand, V. |
|
dc:creator
|
Lunel, C. |
|
dc:creator
|
Jego, P. |
|
dc:subject
|
work stressors |
|
dc:subject
|
stereotypic behaviour |
|
dc:description
|
Stress at work, as shown by a number of human studies, may lead to a variety of negative and durable effects, such as impaired psychological functioning (anxiety, depression…). Horses share with humans this characteristic of working on a daily basis and are submitted then to work stressors related to physical constraints and/or more “psychological” conflicts, such as potential controversial orders from the riders or the requirement to suppress emotions. On another hand, horses may perform abnormal repetitive behaviour (“stereotypies”) in response to adverse life conditions. In the present study, we investigated whether the type of work the horses are used for may have an impact on their tendency to show stereotypic behaviour (and its type) outside work. Observations in their box of 76 horses all living in the same conditions, belonging to one breed and one sex, revealed that the prevalence and types of stereotypies performed strongly depended upon the type of work they were used for. The stereotypies observed involved mostly mouth movements and head tossing/nodding. Work constraints probably added to unfavourable living conditions, favouring the emergence of chronic abnormal behaviours. This is especially remarkable as the 23 hours spent in the box were influenced by the one hour work performed every day. To our knowledge, this is the first evidence of potential effects of work stressors on the emergence of abnormal behaviours in an animal species. It raises an important line of thought on the chronic impact of the work situation on the daily life of individuals. |
|
dc:publisher
|
Public Library of Science |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:date
|
2009 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
PLoS ONE, 2009, 4 (10), e7625
|
|
dc:identifier
|
http://www.plosone.org/article/info:doi%2F10.1371%2Fjournal.pone.0007625
|
|
dc:language
|
|
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
Neonatal handling affects durably bonding and social development |
|
dc:creator
|
Henry, S. |
|
dc:creator
|
Richard-Yris, M.-A. |
|
dc:creator
|
Tordjman, S. |
|
dc:creator
|
Hausberger, M. |
|
dc:subject
|
mother-young interactions |
|
dc:subject
|
domestic horses |
|
dc:subject
|
maternal separation |
|
dc:subject
|
foals |
|
dc:description
|
The neonatal period in humans and in most mammals is characterized by intense mother-young interactions favoring pair bonding and the adaptation of neonates to their new environment. However, in many post-delivery procedures, human babies commonly experience combined maternal separation and intense handling for about one hour post-birth. Currently, the effects of such disturbances on later attachment and on the development of newborns are still debated: clearly, further investigations are required. As animals present good models for controlled experimentation, we chose domestic horses to investigate this issue. Horses, like humans, are characterized by single births, long lactating periods and selective mother infant bonds. Routine postnatal procedures for foals, as for human babies, also involve intense handling and maternal separation. In the present study, we monitored the behavior of foals from early stages of development to ‘‘adolescence’’, in a normal ecological context (social groups with adults and peers). Experimental foals, separated from their mothers and handled for only 1 hour post-birth, were compared to control foals, left undisturbed after birth. Our results revealed short- and long-term effects of this unique neonatal experience on attachment and subsequent social competences. Thus, experimental foals presented patterns of insecure attachment to their mothers (strong dependence on their mothers, little play) and impaired social competences (social withdrawal, aggressiveness) at all ages. We discuss these results in terms of mother-young interactions, timing of interactions and relationships between bonding and subsequent social competences. Our results indicate that this ungulate species could become an interesting animal model. To our knowledge, this is the first clear demonstration that intervention just after birth affects bonding and subsequent social competences (at least until ‘‘adolescence’’). It opens new research directions for studies on both humans and other animals. |
|
dc:publisher
|
Public Library of Science |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:contributor
|
CNRS |
|
dc:contributor
|
Université de Rennes 1 |
|
dc:date
|
2009 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
PLoS ONE, 2009, 4 (4), e5216
|
|
dc:identifier
|
http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0005216
|
|
dc:language
|
|
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
Horse (Equus caballus) whinnies, a source of social information |
|
dc:creator
|
Lemasson, A. |
|
dc:creator
|
Boutin, A. |
|
dc:creator
|
Boivin, S. |
|
dc:creator
|
Blois-Heulin, C. |
|
dc:creator
|
Hausberger, M. |
|
dc:subject
|
individual acoustic signature |
|
dc:subject
|
auditory recognition |
|
dc:subject
|
body size |
|
dc:subject
|
sex difference |
|
dc:subject
|
social familiarity |
|
dc:subject
|
domestic horse |
|
dc:description
|
Many animal species that rely mainly on calls to communicate produce individual acoustic structures, but we wondered whether individuals of species better known as visual communicants, with small vocal repertoires, would also exhibit individual distinctiveness in calls. Moreover, theoretical advances concerning the evolution of social intelligence are usually based on primate species data, but relatively little is known about the social cognitive
capacities of non-primate mammals. However, some nonprimate species demonstrate auditory recognition of social categories and possess mental representation of their social network. Horses (Equus caballus) form stable social networks and although they display a large range of visual signals, they also use long-distance whinny calls to maintain contact. Here, we investigated the potential existence of individual acoustic signatures in whinny calls and the ability of horses to discriminate by ear individuals varying in their degree of familiarity. Our analysis of the acoustic structure of whinnies of 30 adult domestic horses (ten stallions, ten geldings, ten mares) revealed that some of the frequency and temporal parameters carried reliable information about the caller’s sex, body size and identity. However, no correlations with age were found. Playback experiments evaluated the behavioural significance of this variability. Twelve horses heard either control white noise
or whinnies emitted by group members, familiar neighbours or unfamiliar horses. While control sounds did not induce any particular response, horses discriminated the social category of the callers and reacted with a sound-specific behaviour (vigilance and attraction varied with familiarity). Our results support the existence of social knowledge in horses and suggest a process of vocal coding/decoding of information.
|
|
dc:publisher
|
Springer Verlag |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:contributor
|
CNRS |
|
dc:contributor
|
Université de Rennes 1 |
|
dc:date
|
2009 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
Animal Cognition, 2009, 12, 693-704
|
|
dc:language
|
|
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
Kin recognition via cuticular hydrocarbons shapes cockroach social life |
|
dc:creator
|
Lihoreau, M. |
|
dc:creator
|
Rivault, C. |
|
dc:subject
|
Blatella germanica |
|
dc:subject
|
cuticular hydrocarbons |
|
dc:subject
|
kin recognition |
|
dc:subject
|
partner choice |
|
dc:subject
|
social insect |
|
dc:description
|
Genetic relatedness plays a key role in the organization and the functioning of societies. A large diversity of species has developed kin recognition abilities, allowing individuals to discriminate conspecifics in relation to relatedness. In social insects, many studies showed that discrimination generally acts at the level of nestmateship and only few studies report kin recognition abilities. Our results highlight the importance of kin recognition in shaping social life in the urban cockroach Blattella germanica (L.) and present a complete description of the recognition system from expression to action components. Cockroaches of all developmental stages (nymphs and adults) discriminate siblings from nonsiblings independently of any prior social experience. Preference is context dependent so that siblings are preferred as social partners, whereas nonsiblings are preferred as mating partners. Discrimination is based on quantitative differences of cuticular hydrocarbons that are perceived through antennal contacts. As individual cuticular profiles remain stable over time, they constitute reliable discrimination cues correlated with relatedness. Our results offer interesting perspectives for the study of kin recognition and for the understanding of evolution toward sociality in insects. |
|
dc:publisher
|
Oxford University Press |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:date
|
2009 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
Behavioral Ecology, 2009, 20, 46-53
|
|
dc:language
|
|
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
Campbell's monkeys use affixation to alter call meaning |
|
dc:creator
|
Ouattara, K. |
|
dc:creator
|
Lemasson, A. |
|
dc:creator
|
Zuberbühler, K. |
|
dc:subject
|
alarm call |
|
dc:subject
|
Cercpoithecus campbelli campbelli |
|
dc:subject
|
acoustic variation |
|
dc:description
|
Human language has evolved on a biological substrate with phylogenetic roots deep in the primate lineage. Here, we describe a functional analogy to a common morphological process in human speech, affixation, in the alarm calls of free-ranging adult Campbell's monkeys (Cercopithecus campbelli campbelli). We found that male alarm calls are composed of an acoustically variable stem, which can be followed by an acoustically invariable suffix. Using long-term observations and predator simulation experiments, we show that suffixation in this species functions to broaden the calls' meaning by transforming a highly specific eagle alarm to a general arboreal disturbance call or by transforming a highly specific leopard alarm call to a general alert call. We concluded that, when referring to specific external events, non-human primates can generate meaningful acoustic variation during call production that is functionally equivalent to suffixation in human language. |
|
dc:publisher
|
Public Library of Science |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:contributor
|
CNRS |
|
dc:contributor
|
Université de Rennes 1 |
|
dc:date
|
2009 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
PLoS ONE, 2009, 4 (11), e7808
|
|
dc:identifier
|
http://www.plosone.org/article/info:doi%2F10.1371%2Fjournal.pone.0007808
|
|
dc:language
|
|
|
dc:relation
|
Research Highlights (2009). Monkey talk. Nature, 462, p. 828 |
|
dc:relation
|
An introduction to monkey grammar ? ScienceNow Daily News (http://sciencenow.sciencemag.org/cgi/content/full/2009/1204/2?rss=1) |
|
dc:relation
|
Morelle, R. (2009). Monkey calls give language clues. BBC News/Science & environment (http://news.bbc.co.uk/2/low/science/nature/8405806.stm) |
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
Anti-predator strategies of free-ranging Campbell's monkeys |
|
dc:creator
|
Ouattara, K. |
|
dc:creator
|
Lemasson, A. |
|
dc:creator
|
Zuberbühler, K. |
|
dc:subject
|
alarm call |
|
dc:subject
|
Cercopithecus campbelli |
|
dc:subject
|
evolution of language |
|
dc:subject
|
predation |
|
dc:subject
|
semantic |
|
dc:description
|
Field studies on male forest guenon alarm-calling behaviour have revealed a number of intricacies about how these primates use vocalizations to protect themselves from predation. In these species, the vocal behaviour of adult females is often different from that of the males, but little systematic work has been done. Here, we describe the alarm call system of female Campbell's monkeys, Cercopithecus campbelli, in their natural forest habitat in western Ivory Coast. We found that in response to disturbing events, females produced three basic alarm call types, ‘wak-oos’, ‘hoks’ and acoustically variable ‘trill’ calls, consisting of repeated and rapidly ascending (RRA) pulses, which varied systematically in the temporal and frequency domains. Using observational and experimental data we were able to demonstrate that the RRA calls consisted of four acoustic variants, which could be associated with specific contexts, allowing listeners to draw inferences about the type of disturbance experienced by the caller. We also compared the alarm call behaviour of free-ranging individuals with published results from captivity. As predicted, captive individuals failed to produce predator-specific alarm calls, but they also produced an RRA variant in response to humans that was absent in the wild. We discuss the relevance of these findings in terms of their broader potential impact on evolutionary theories of primate communication. |
|
dc:publisher
|
Brill Academic Publishers |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:date
|
2009 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
Behaviour, 2009, 146, 1687-1708
|
|
dc:language
|
|
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
Generating meaning with finite means in Campbell's monkeys |
|
dc:creator
|
Ouattara, K. |
|
dc:creator
|
Lemasson, A. |
|
dc:creator
|
Zuberbühler, K. |
|
dc:subject
|
alarm call |
|
dc:subject
|
non-human primate |
|
dc:subject
|
referential communication |
|
dc:subject
|
semantic |
|
dc:subject
|
syntax |
|
dc:description
|
Primate vocal behavior is often considered irrelevant in modeling human language evolution, mainly because of the caller’s limited vocal control and apparent lack of intentional signaling. Here, we present the results of a long-term study on Campbell’s monkeys, which has revealed an unrivaled degree of vocal complexity. Adult males produced six different loud call types, which they combined into various sequences in highly context-specific ways. We found stereotyped sequences that were strongly associated with cohesion and travel, falling trees, neighboring groups, nonpredatory animals, unspecific predatory threat, and specific predator classes. Within the responses to predators, we found that crowned eagles
triggered four and leopards three different sequences, depending on how the caller learned about their presence. Callers followed a number of principles when concatenating sequences, such as nonrandom transition probabilities of call types, addition of specific calls into an existing sequence to form a different one, or recombination of two sequences to form a third one. We conclude that these primates have overcome some of the constraints of limited vocal control by combinatorial organization. As the different sequences were so tightly linked to specific external events, the Campbell’s monkey call system may be the most complex example of ‘proto-syntax’ in animal communication known to date.
|
|
dc:publisher
|
National Academy of Sciences of the USA |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:contributor
|
CNRS |
|
dc:contributor
|
Université de Rennes 1 |
|
dc:date
|
2009 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
Proceedings of the National Academy of Sciences of the USA, 2009, 106 (51), 22026-22031
|
|
dc:language
|
|
|
dc:relation
|
Research Highlights in Nature, 462, 17 December 2009, "Monkey talk" |
|
dc:relation
|
Keim, B. (2009). Rudiments of language discovered in monkeys. Wired Science (http://www.wired.com/wiredscience/2009/12/monkey-talk/) |
|
dc:relation
|
Wade, N. (2009). Boom! Hok! A monkey language is deciphered. The New York Times (http://www.nytimes.com/2009/12/08/science/08monkey.html) |
|
dc:relation
|
(2009). La syntaxe des primates. Radio-Canada (http://www.radio-canada.ca/nouvelles/science/2009/12/10/002-primates-syntaxe.shtml) |
|
dc:coverage
|
|
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
The alarm call system of female Campbell's monkeys |
|
dc:creator
|
Ouattara, K. |
|
dc:creator
|
Zuberbühler, K. |
|
dc:creator
|
N'Goran, K. E. |
|
dc:creator
|
Gombert, J.-E. |
|
dc:creator
|
Lemasson, A. |
|
dc:subject
|
vocal behaviour |
|
dc:subject
|
acoustic variants |
|
dc:subject
|
context |
|
dc:subject
|
free-ranging individuals |
|
dc:subject
|
captive individuals |
|
dc:description
|
Field studies on male forest guenon alarm-calling behaviour have revealed a number of intricacies about how these primates use vocalizations to protect themselves from predation. In these species, the vocal behaviour of adult females is often different from that of the males, but little systematic work has been done. Here, we describe the alarm call system of female Campbell's monkeys, Cercopithecus campbelli, in their natural forest habitat in western Ivory Coast. We found that in response to disturbing events, females produced three basic alarm call types, 'wak-oos', 'hoks' and acoustically variable 'trill' calls, consisting of repeated and rapidly ascending (RRA) pulses, which varied systematically in the temporal and frequency domains. Using observational and experimental data we were able to demonstrate that the RRA calls consisted of four acoustic variants, which could be associated with specific contexts, allowing listeners to draw inferences about the type of disturbance experienced by the caller. We also compared the alarm call behaviour of free-ranging individuals with published results from captivity. As predicted, captive individuals failed to produce predator-specific alarm calls, but they also produced an RRA variant in response to humans that was absent in the wild. We discuss the relevance of these findings in terms of their broader potential impact on evolutionary theories of primate communication. |
|
dc:publisher
|
Elsevier |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:contributor
|
CNRS |
|
dc:contributor
|
Université de Rennes 1 |
|
dc:date
|
2009 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
Animal Behaviour, 2009, 78, 35-44
|
|
dc:language
|
|
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
Behavioural adaptations in talitrids from two Atlantic beaches |
|
dc:creator
|
Rossano, C. |
|
dc:creator
|
Gambineri, S. |
|
dc:creator
|
Fanini, L. |
|
dc:creator
|
Durier, V. |
|
dc:creator
|
Rivault, C. |
|
dc:creator
|
Scapini, F. |
|
dc:subject
|
Talitrus saltator |
|
dc:subject
|
sandy beaches |
|
dc:subject
|
orientation behaviour |
|
dc:subject
|
circadian rhythms |
|
dc:subject
|
tides |
|
dc:subject
|
behavioural variability |
|
dc:description
|
The aim of the present study was to test sun orientation and rhythmic activity of two sandhopper populations from two Atlantic macro-tidal beaches. A population from Le Verger beach (orientated to 346°, Ille et Vilaine, Brittany, France) and a population from Damgan (orientated to 195°, Morbihan, Brittany, France), were tested on the beach under clear sky discriminating for landscape vision. For both populations locomotor activity rhythm was recorded in the laboratory. The two beaches differed for climatic features, tidal range and for human use. Both talitrid populations resulted very well orientated toward the shoreline, and both used solar position and landscape vision to orient. However the multiple regression analysis of orientation with climatic features showed a different use of local cues by the two populations and a slight influence of tidal regime (ebbing and rising tide), in spite of the supralittoral zonation of sandhoppers. In the laboratory they showed a well defined rhythmic behaviour as well as a bimodal rhythmicity, explained as a tidal one. These results are a new brick in the complex picture of orientation and rhythm studies on sandy beach invertebrates. |
|
dc:publisher
|
Elsevier |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:contributor
|
CNRS |
|
dc:contributor
|
Université de Rennes 1 |
|
dc:date
|
2009 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
Estuarine, Coastal and Shelf Science, 2009, 85, 573-584.
|
|
dc:language
|
|
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
Factors influencing conception rates of Arab mares in Tunisia |
|
dc:creator
|
Benhajali, H. |
|
dc:creator
|
Richard-Yris, M.-A. |
|
dc:creator
|
Ezzaouia, M. |
|
dc:creator
|
Charfi, F. |
|
dc:creator
|
Hausberger, M. |
|
dc:subject
|
horse |
|
dc:subject
|
breeding |
|
dc:subject
|
reproduction efficiency |
|
dc:subject
|
multivariate analysis |
|
dc:description
|
In order to investigate the factors affecting the reproduction efficiency of Arab breeding mares in Tunisia, breeding data corresponding to 2340 mated cycles, over 5 years (from 2000 to 2004), from 555 mares offspring of 50 sires and bred with 17 stallions were analysed using a multivariate logistic regression. We chose logit link function and binomial distribution and we used log-likelihood-ratio (LL) and Wald tests (X2 Wald) to test the mean values. The factors of variation included in the model were the year, the stallion, the age of the mare at mating, the sire and the category of the mare. Logistic regression results showed that age and sire affected both the overall conception rate and the first-cycle conception rate
of the mares whilst category and stallion influenced only the overall conception rate. To our knowledge, this is the first study showing that the sire of the mare can affect both the first-cycle conception rate and the overall conception rate of the mares.
|
|
dc:publisher
|
Elsevier |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:contributor
|
CNRS |
|
dc:contributor
|
Université de Rennes 1 |
|
dc:date
|
2010 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
Animal Reproduction Science, 2010, 117, 106-119
|
|
dc:language
|
|
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
The primate roots of human language: Primate vocal behaviour and cognition in the wild |
|
dc:creator
|
Zuberbühler, K. |
|
dc:creator
|
Ouattara, K. |
|
dc:creator
|
Bitty, A. |
|
dc:creator
|
Lemasson, A. |
|
dc:creator
|
Noë, R. |
|
dc:subject
|
|
|
dc:description
|
|
|
dc:publisher
|
John Benjamins Publishing Company, Amsterdam |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:contributor
|
CNRS |
|
dc:contributor
|
Université de Rennes 1 |
|
dc:date
|
2009 |
|
dc:type
|
Chapitre d'ouvrage |
|
dc:format
|
|
|
dc:identifier
|
In F. d'Errico & J.-M. Hombert (Eds.) (2009), Becoming eloquent: Advances in the emergence of language, human cognition, and modern cultures (pp. 235-264)
|
|
dc:language
|
|
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
A review of the human-horse relationship |
|
dc:creator
|
Hausberger, M. |
|
dc:creator
|
Roche, H. |
|
dc:creator
|
Henry, S. |
|
dc:creator
|
Visser, E. K. |
|
dc:subject
|
horse-human relationship |
|
dc:subject
|
interaction |
|
dc:subject
|
handling |
|
dc:subject
|
management |
|
dc:description
|
Despite a long history of human–horse relationship, horse-related incidents and accidents do occur amongst professional and non professional horse handlers. Recent studies show that their occurrence depend more on the frequency and amount of interactions with horses than on the level of competency, suggesting a strong need for specific research and training of individuals working with horses. In the present study, we review the current scientific knowledge on human–horse relationships. We distinguish here short occasional interactions with familiar or unfamiliar horses (e.g. veterinary inspection) and long-term bonds (e.g. horse–owner).
An important aspect of the horse–human relationship is to try and improve the development and maintenance of a strong positive relationship. Studies show that deficits in the management conditions (housing, feeding, possibilities for social contact, and training methods) may lead to relational problems between horses and humans. Different methods have been used to assess and improve the human–horse relation, especially at the young age. They reveal that the time and type of contact all play a role, while recent studies suggest that the use of familiarized social models might be a great help through social facilitation.
We argue that an important theoretical framework could be Hinde’s [Hinde, R., 1979. Towards Understanding Relationships. Academic Press, Londres] definition of a relationship as an emerging bond from a series of interactions: partners have expectations on the next interaction on the basis of the previous ones. Understanding that a relationship is built up on the basis of a succession of interactions is an important step as it suggests that attention is being paid to the ‘‘positive’’ or ‘‘negative’’ valence of each interaction as a step for the next one. A better knowledge of learning rules is certainly necessary in this context not only to train the horse but also to counterbalance the unavoidable negative inputs that exist in routine procedures and reduce their impact on the relationship.
It appears clearly that research is needed in order to assess how to better and safely approach the horse (e.g. research in position, posture, gaze, etc.), what type of approaches and timing may help in developing a positive bond, what influence human management and care have on the relationship, and how this can be adapted to have a positive influence on the relationship. Also the interaction between rider and horse, the search for the optimal match between two individuals, is an aspect of the horse–human relationship that requires attention in order to decrease the number of horse-riding accidents and reduced states of welfare. On the other hand, adequate knowledge is readily available that may improve the present situation rapidly. Developing awareness and attention to behavioural cues given by horses would certainly help decreasing accidents among professionals when interacting. Scientists therefore should play a major role in transmitting not only elements of the current knowledge of the ethology of the horse but also by helping developing observational skills.
|
|
dc:publisher
|
Elsevier |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:contributor
|
CNRS |
|
dc:contributor
|
Université de Rennes 1 |
|
dc:date
|
2008 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
Applied Animal Behaviour Science, 2008, 109, 1-24
|
|
dc:language
|
|
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
Horse behaviour and welfare |
|
dc:creator
|
Hausberger, M. |
|
dc:creator
|
Sondergaard, E. |
|
dc:creator
|
Martin-Rosset, W. |
|
dc:subject
|
|
|
dc:description
|
|
|
dc:publisher
|
Wageningen Academic Publishers, Wageningen, The Netherlands |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:contributor
|
CNRS |
|
dc:contributor
|
Université de Rennes 1 |
|
dc:date
|
2007 |
|
dc:type
|
Ouvrage édité |
|
dc:format
|
|
|
dc:identifier
|
EAAP Scientific Series 122
|
|
dc:language
|
|
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
Friendships between males and lactating females in a free-ranging group of olive baboons (Papio hamadryas anubis): Evidence for playback experiments |
|
dc:creator
|
Lemasson, A. |
|
dc:creator
|
Palombit, R. A. |
|
dc:creator
|
Jubin, R. |
|
dc:subject
|
friendship |
|
dc:subject
|
infanticide |
|
dc:subject
|
lactation |
|
dc:subject
|
playback |
|
dc:subject
|
olive baboons |
|
dc:description
|
Close association between an anoestrous female at the time of lactation and adult male(s) is relatively rare in mammals, but common in baboons (Papio hamadryas subsp.). The functional significance of these “friendships” remains unclear, however. In chacma baboons (P. h. griseipes), friendships are a counter-strategy to infanticide by immigrant males. Experimental playback of female distress calls in chacma baboons revealed that male friends are more motivated to protect females and infants than are control males. Olive baboons (P. h. anubis) also exhibit friendships, but infanticide is rare, suggesting that friendships provide females with protection from non-lethal aggression (anti-harassment hypothesis) or serve to promote male–infant bonds that later benefit the maturing juvenile (future male caretaker hypothesis). We replicated these playback experiments on a group of olive baboons to test between these hypotheses and to evaluate if the lower costs of non-lethal harassment lessens male protective responsiveness relative to protection from (more costly) infanticide. Spatial data revealed that most lactating females had one to four friend males. Relative to non-friends, friend dyads were characterized by higher rates of allogrooming and infant handling, but less agonism. Female rank was correlated with the number of male friends. Just as in chacma baboons, playback of female screams elicited stronger responses from male friends than control males in support the anti-harassment hypothesis. Compared to the chacma baboon, male olive baboons appeared to exhibit similarly high levels of protective solicitude for female friends although they protect against non-lethal harassment rather than infanticide. |
|
dc:publisher
|
Springer Verlag, Berlin |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:contributor
|
CNRS |
|
dc:contributor
|
Université de Rennes 1 |
|
dc:date
|
2008-01-01 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
Behavioral Ecology and Sociobiology, 2008, 62, 1027-1035
|
|
dc:language
|
|
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
Daily laying time in free-living European starlings: Solar noon, a potential synchronizer |
|
dc:creator
|
Houdelier, C. |
|
dc:creator
|
Bertin, A. |
|
dc:creator
|
Guyomarc'h, C. |
|
dc:creator
|
Richard-Yris, M.-A. |
|
dc:creator
|
Lumineau, S. |
|
dc:subject
|
daily rhythm |
|
dc:subject
|
egg laying |
|
dc:subject
|
synchronization |
|
dc:subject
|
solar noon |
|
dc:subject
|
starling |
|
dc:description
|
Reproduction is generally controlled by important temporal constraints involving complex adaptive mechanisms. Birds, in temperate zones, present marked breeding seasonality as well as marked daily organization of reproductive behavior, especially laying. Intra-specific variability and determinants of this pattern have been investigated mainly in domestic non-passerine birds. The present study analyzed the daily temporal organization of laying in a free-living species, the European starling, Sturnus vulgaris. Breeding in a starling colony was monitored for five consecutive years using a non-invasive method (infrared video camera) to precisely estimate laying times. European starlings present a marked daily laying rhythm, ovipositions occurring only during a morning species-specific temporal window. Inside this laying window, time intervals between successive eggs varied greatly among females. Contrary to many species, the light/dark cycle did not appear to control laying time in European starlings, but daily variations of the ultraviolet composition of the solar spectrum appeared to be a possible Zeitgeber of this behavior. |
|
dc:publisher
|
Taylor & Francis, Abingdon, Oxfordshire |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:date
|
2007-01-01 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
Chronobiology International, 2007, 24, 235-252
|
|
dc:language
|
|
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
Tactile stimuli trigger group effects in cockroach aggregations |
|
dc:creator
|
Lihoreau, M. |
|
dc:creator
|
Rivault, C. |
|
dc:subject
|
gregarious insect species |
|
dc:subject
|
individuals |
|
dc:subject
|
isolation |
|
dc:subject
|
nymphal development |
|
dc:description
|
In many gregarious species, social interactions among group members have such a potent influence on the physiology and/or the behaviour of individuals that isolation has dramatic consequences for their development and survival. Although ‘group effects’ have been described in many insect species, the mechanisms
involved in these processes remain poorly documented. Our aim was to shed light on group effects in cockroaches by investigating the nature of the social stimuli triggering differences in developmental rates between grouped and isolated individuals. Group effects were absent in nonaggregating species (Blattella lituricollis, Blattella biligata), but present in species that form social aggregations (Blattella germanica, Symploce pallens). The presence of conspecifics increased rates of both nymphal development and oothecae production in B. germanica. Tactile stimuli were sufficient to trigger developmental group effects in this gregarious cockroach. Blattella germanica nymphs reared with tactile stimuli, either from a rotating feather or from insects of other species, grew faster than isolated nymphs. Although the role of tactile stimuli has been understudied, they could be involved in group effects in many insect species. |
|
dc:publisher
|
Elsevier, Amsterdam |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:date
|
2008-01-01 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
Animal Behaviour, 2008, 75, 1965-1972
|
|
dc:language
|
|
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
Weakly aggressive behaviour towards nymphs in the cockroach Schultesia nitor (Blattaria: Zetoborinae) |
|
dc:creator
|
Van Baaren, J. |
|
dc:creator
|
Deleporte, P. |
|
dc:creator
|
Vimard, A. |
|
dc:creator
|
Biquand, V. |
|
dc:creator
|
Pierre, J.-S. |
|
dc:subject
|
aggressive behaviour |
|
dc:subject
|
cockroaches |
|
dc:subject
|
mother-offspring interactions |
|
dc:subject
|
Schultesia |
|
dc:description
|
This paper describes aggressive behaviour in the cockroach Schultesia nitor, a tropical forest species living in bird nests. Young S. nitor nymphs are known to show active dispersal while old nymphs and adults are contrastingly strongly gregarious, a combination of features never observed in other cockroach species. Our laboratory experiments using video recording of confrontations between
pairs show that aggressive behaviour towards conspecific nymphs is not exhibited towards nymphs of the species Phoetalia pallida, and thus can be considered species specific in S. nitor. But, it is not kin oriented: the mother and all adults of both sexes in different physiological states exhibit this behaviour as well. Six types of aggressive interactions were discriminated, occurring in agesymmetric pairs of nymphs and adults. Even more frequent aggression was exhibited by adults and last instar nymphs towards younger nymphs of all instars. The frequency of aggressive acts and types of aggressive interactions varied according to sex and
size of the two interacting individuals. The possible function and evolution of this behaviour is discussed, with emphasis on the difficulty of interpreting obvious but weak and not kin-biased aggression. |
|
dc:publisher
|
Wiley-Blackwell |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:contributor
|
CNRS |
|
dc:contributor
|
Université de Rennes 1 |
|
dc:date
|
2007 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
Aggressive Behavior, 2007, 33, 498-507
|
|
dc:language
|
|
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
Laterality and emotions: Visual laterality in the domestic horse (Equus caballus) differs with objects' emotional value |
|
dc:creator
|
De Boyer Des Roches, A. |
|
dc:creator
|
Richard-Yris, M.-A. |
|
dc:creator
|
Henry, S. |
|
dc:creator
|
Ezzaouïa, M. |
|
dc:creator
|
Hausberger, M. |
|
dc:subject
|
emotion |
|
dc:subject
|
perception |
|
dc:subject
|
laterality |
|
dc:subject
|
visual processing |
|
dc:subject
|
horse |
|
dc:description
|
Lateralization of emotions has received great attention in the last decades, both in humans and animals, but little interest has been given to side bias in perceptual processing. Here, we investigated the influence of the emotional valence of stimuli on visual and olfactory explorations by horses, a large mammalian species with
two large monocular visual fields and almost complete decussation of optic fibres. We confronted 38 Arab mares to three objects with either a positive, negative or neutral emotional valence (novel object). The results revealed a gradient of exploration of the 3 objects according to their emotional value and a clear asymmetry in visual exploration. When exploring the novel object, mares used preferentially their right eyes, while they showed a slight tendency to use their left eyes for the negative object. No asymmetry was evidenced for the object with the positive valence. A trend for an asymmetry in olfactory investigation was also observed. Our data confirm the role of the left hemisphere in assessing novelty in horses like in many vertebrate species and the possible role of the right hemisphere in processing negative emotional responses. Our findings also
suggest the importance of both hemispheres in the processing positive emotions. This study is, to our knowledge, the first to demonstrate clearly that the emotional valence of a stimulus induces a specific visual lateralization pattern. |
|
dc:publisher
|
Elsevier |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:contributor
|
CNRS |
|
dc:contributor
|
Université de Rennes 1 |
|
dc:date
|
2008 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
Physiology & Behavior, 2008, 94, 487-490
|
|
dc:language
|
|
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
A potential neural substrate for processing functional classes of complex acoustic signals |
|
dc:creator
|
George, I. |
|
dc:creator
|
Cousillas, H. |
|
dc:creator
|
Richard, J.-P. |
|
dc:creator
|
Hausberger, M. |
|
dc:subject
|
categorization |
|
dc:subject
|
brain structures |
|
dc:subject
|
birdsong |
|
dc:subject
|
European starling |
|
dc:subject
|
neural bases of speech |
|
dc:description
|
Categorization is essential to all cognitive processes, but identifying the neural substrates underlying categorization processes is a real challenge. Among animals that have been shown to be able of categorization, songbirds are particularly interesting because they provide researchers with clear examples of categories of acoustic signals allowing different levels of recognition, and they possess a system of specialized brain structures found only in birds that learn to sing: the song system. Moreover, an avian brain nucleus that is analogous to the mammalian secondary auditory cortex (the caudo-medial nidopallium, or NCM) has recently emerged as a plausible site for sensory representation of birdsong, and appears as a well positioned brain region for categorization of songs. Hence, we tested responses in this non-primary, associative area to clear and distinct classes of songs with different functions and social values, and for a possible correspondence between these responses and the functional aspects of songs, in a highly social songbird species: the European starling. Our results clearly show differential neuronal responses to the ethologically defined classes of songs, both in the number of neurons responding, and in the response magnitude of these neurons. Most importantly, these differential responses corresponded to the functional classes of songs, with increasing activation from non-specific to species-specific and from species-specific to individual-specific sounds. These data therefore suggest a potential neural substrate for sorting natural communication signals into categories, and for individual vocal recognition of same-species members. Given the many parallels that exist between birdsong and speech, these results may contribute to a better understanding of the neural bases of speech. |
|
dc:publisher
|
Public Library of Science |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:contributor
|
CNRS |
|
dc:contributor
|
Université de Rennes 1 |
|
dc:date
|
2008 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
PLoS ONE, 2008, 3 (5), e2203
|
|
dc:identifier
|
http://www.plosone.org/article/info:doi%2F10.1371%2Fjournal.pone.0002203
|
|
dc:language
|
|
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
Linking social and vocal brains: Could social segregation prevent a proper development of a central auditory area in a female songbird? |
|
dc:creator
|
Cousillas, H. |
|
dc:creator
|
George, I. |
|
dc:creator
|
Henry, L. |
|
dc:creator
|
Richard, J.-P. |
|
dc:creator
|
Hausberger, M. |
|
dc:subject
|
vocal development |
|
dc:subject
|
European starling |
|
dc:subject
|
peers |
|
dc:subject
|
socially deprivation |
|
dc:description
|
Direct social contact and social interaction affect speech development in human infants and are required in order to maintain perceptual abilities; however the processes involved are still poorly known. In the present study, we tested the hypothesis that social segregation during development would prevent the proper development of a central auditory area, using a “classical” animal model of vocal development, a songbird. Based on our knowledge of European starling, we raised young female starlings with peers and only adult male tutors. This ensured that female would show neither social bond with nor vocal copying from males. Electrophysiological recordings performed when these females were adult revealed perceptual abnormalities: they presented a larger auditory area, a lower proportion of specialized neurons and a larger proportion of generalist sites than wild-caught females, whereas these characteristics were similar to those observed in socially deprived (physically separated) females. These results confirmed and added to earlier results for males, suggesting that the degree of perceptual deficiency reflects the degree of social separation. To our knowledge, this report constitutes the first evidence that social segregation can, as much as physical separation, alter the development of a central auditory area. |
|
dc:publisher
|
Public Library of Science |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:contributor
|
CNRS |
|
dc:contributor
|
Université de Rennes 1 |
|
dc:date
|
2008 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
PLoS ONE, 2008, 3 (5), e2194
|
|
dc:identifier
|
http://www.plosone.org/article/info:doi%2F10.1371%2Fjournal.pone.0002194
|
|
dc:language
|
|
|
dc:rights
|
|
|
|
|
|
|
dc:title
|
Could adults be used to improve social skills of young horses, Equus caballus? |
|
dc:creator
|
Bourjade, M. |
|
dc:creator
|
Moulinot, M. |
|
dc:creator
|
Henry, S. |
|
dc:creator
|
Richard-Yris, M.-A. |
|
dc:creator
|
Hausberger, M. |
|
dc:subject
|
social influence |
|
dc:subject
|
young-adult interaction |
|
dc:subject
|
social development |
|
dc:subject
|
horse |
|
dc:description
|
We investigated the effects of the introduction of foreign adults on the behavior of young horses. First, we observed the behavior of 1- and 2-year-old domestic horses housed in same-age and same-sex groups (a standard housing system, but different from a natural situation). Then, two same-sex adults were introduced into each experimental group. Observations made before, during and after an introduction indicated that young horses reared in homogeneous groups of young had different behaviors compared to other domestic horses reared under more socially natural conditions. After the introduction of adults, young horses expressed new behaviors, preferential social associations emerged, positive social behavior increased and agonistic interactions decreased. These results have important implications both for understanding the influence that adults may have on the behavior of young horses, and in terms of husbandry, indicating the importance of keeping young horses with adults, although further studies are still necessary. |
|
dc:publisher
|
Wiley-Blackwell |
|
dc:contributor
|
EthoS, UMR 6552 |
|
dc:contributor
|
CNRS |
|
dc:contributor
|
Université de Rennes 1 |
|
dc:date
|
2008 |
|
dc:type
|
Article scientifique |
|
dc:format
|
|
|
dc:identifier
|
Developmental Psychobiology, 2008, 50, 408-417
|
|
dc:language
|
|
|
dc:rights
|
|
|
|
|
resumptionToken
|
1730415718400 |
|