Ostner, Julia

[["dc.bibliographiccitation.firstpage","32"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Hormones and Behavior"],["dc.bibliographiccitation.lastpage","39"],["dc.bibliographiccitation.volume","63"],["dc.contributor.author","Young, Christopher"],["dc.contributor.author","Majolo, Bonaventura"],["dc.contributor.author","Heistermann, Michael"],["dc.contributor.author","Schülke, Oliver"],["dc.contributor.author","Ostner, Julia"],["dc.date.accessioned","2017-09-07T11:54:35Z"],["dc.date.available","2017-09-07T11:54:35Z"],["dc.date.issued","2012"],["dc.description.abstract","In many cercopithecine primates females display probabilistic cues of fertility to indicate the periovulatory period to males. These cues may include female behaviour, acoustic signals, and morphological signs such as the anogenital swelling. However, the extent to which males can utilise this information varies between species. We describe male sexual behaviour in relation to changes in anogenital swelling size, timing of ovulation and female socio-sexual behaviour in wild Barbary macaques (Macaca sylvanus). We further compare male sexual behaviour during conception and post-conception cycles to evaluate if males differentiate between these qualitatively different cycle types. Our results show that during conception cycles male mating behaviour was concentrated around the fertile phase implying that males inferred information from more than swelling size alone. Male mating frequency increased in line with female socio-sexual behaviour, namely female presenting and the frequency of copulations with copulation calls. Most strikingly our results show that males invested equally in mating during fertile and non-fertile, i.e. post-conception, maximum swelling phases. Whether post-conception swellings were merely a result of changes in hormone concentrations during pregnancy or part of a female reproductive strategy remains elusive. In sum, this study adds to the body of research on the evolution of female sexual signals and how males may infer information from these cues."],["dc.identifier.doi","10.1016/j.yhbeh.2012.11.004"],["dc.identifier.gro","3151452"],["dc.identifier.pmid","23146839"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/8255"],["dc.language.iso","en"],["dc.notes.status","public"],["dc.notes.submitter","chake"],["dc.relation.issn","0018-506X"],["dc.title","Male mating behaviour in relation to female sexual swellings, socio-sexual behaviour and hormonal changes in wild Barbary macaques"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1665"],["dc.bibliographiccitation.issue","10"],["dc.bibliographiccitation.journal","Behavioral Ecology and Sociobiology"],["dc.bibliographiccitation.lastpage","1677"],["dc.bibliographiccitation.volume","67"],["dc.contributor.author","Young, Christopher"],["dc.contributor.author","Hähndel, Sabine"],["dc.contributor.author","Majolo, Bonaventura"],["dc.contributor.author","Schülke, Oliver"],["dc.contributor.author","Ostner, Julia"],["dc.date.accessioned","2017-09-07T11:54:39Z"],["dc.date.available","2017-09-07T11:54:39Z"],["dc.date.issued","2013"],["dc.description.abstract","Dominant mammalian males should gain a reproductive advantage due to their greater fighting abilities. However, the extent to which they can monopolise access to females varies across species. In primates and recently other mammalian species, the Priority of Access (PoA) model is commonly used to measure the degree to which male rank and female receptive synchrony affect mating skew. Few studies have examined the factors which lead to deviations from the expectations of the model. Here, we investigate male mating skew in wild Barbary macaques (Macaca sylvanus). We examined four of the main factors which affect male mating success: the roles of male rank, female receptive synchrony, coalitionary activity and female behaviour. We found that male mating was skewed up the hierarchy, but there was a large deviation from the PoA model's expectations with high-ranked males not gaining as big a share as expected. Females frequently initiated sexual encounters, predominantly with mid-ranked males, increasing their mating success. Male coalitionary activity independently increased mating success. Frequent associations with females were costly to males as they were the targets of bridging coalitions, decreasing future mating opportunities for the targets. High-ranking males did not increase their mating success directly through bridging coalitions but acted to dilute the effects of female behaviour. By examining different factors affecting mating skew, we are able to show that alternative male and female mating strategies are effective in reducing the monopolisation potential of the dominant male."],["dc.identifier.doi","10.1007/s00265-013-1577-7"],["dc.identifier.gro","3151456"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/8259"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.relation.issn","0340-5443"],["dc.title","Male coalitions and female behaviour affect male mating success independent of dominance rank and female receptive synchrony in wild Barbary macaques"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","18195"],["dc.bibliographiccitation.issue","51"],["dc.bibliographiccitation.journal","Proceedings of the National Academy of Sciences"],["dc.bibliographiccitation.lastpage","18200"],["dc.bibliographiccitation.volume","111"],["dc.contributor.author","Young, Christopher"],["dc.contributor.author","Majolo, Bonaventura"],["dc.contributor.author","Heistermann, Michael"],["dc.contributor.author","Schülke, Oliver"],["dc.contributor.author","Ostner, Julia"],["dc.date.accessioned","2017-09-07T11:54:47Z"],["dc.date.available","2017-09-07T11:54:47Z"],["dc.date.issued","2014"],["dc.description.abstract","Male macaques form social bonds similar to human friendships that buffer them against day-to-day stressors. If male primates live in multimale groups they usually fight fiercely over access to females, but males can develop friendly relationships with a few group mates. The strength of these “friendships” has now been shown to buffer against the negative effects of social and environmental stressors, a phenomenon that was previously only described for females and pair-living animals. Long-term glucocorticoid (stress hormone) elevation can increase susceptibility to disease and mortality. This study shows that variation in everyday stressors such as the amount of aggression received or cold stress can cause such long-term elevated glucocorticoid levels but that keeping a few close male associates will avoid that."],["dc.identifier.doi","10.1073/pnas.1411450111"],["dc.identifier.gro","3151489"],["dc.identifier.pmid","25489097"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/8295"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.relation.issn","0027-8424"],["dc.title","Responses to social and environmental stress are attenuated by strong male bonds in wild macaques"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","e67285"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","PLoS ONE"],["dc.bibliographiccitation.volume","8"],["dc.contributor.author","Seltmann, Anne"],["dc.contributor.author","Majolo, Bonaventura"],["dc.contributor.author","Schülke, Oliver"],["dc.contributor.author","Ostner, Julia"],["dc.date.accessioned","2017-09-07T11:54:36Z"],["dc.date.available","2017-09-07T11:54:36Z"],["dc.date.issued","2013"],["dc.description.abstract","Social animals have to coordinate activities and collective movements to benefit from the advantages of group living. Animals in large groups maintain cohesion by self-organization processes whereas in smaller groups consensus decisions can be reached. Where consensus decisions are relevant leadership may emerge. Variation in the organization of collective movements has been linked to variation in female social tolerance among macaque species ranging from despotic to egalitarian. Here we investigated the processes underlying group movements in a wild macaque species characterized by a degree of social tolerance intermediate to previously studied congeneric species. We focused on processes before, during and after the departure of the first individual. To this end, we observed one group of wild Barbary macaques (Macaca sylvanus) in the Middle Atlas, Morocco using all-occurrence behaviour sampling of 199 collective movements. We found that initiators of a collective movement usually chose the direction in which more individuals displayed pre-departure behavior. Dominant individuals contributed to group movements more than subordinates, especially juveniles, measured as frequencies of successful initiations and pre-departure behaviour. Joining was determined by affiliative relationships and the number of individuals that already joined the movement (mimetism). Thus, in our study group partially shared consensus decisions mediated by selective mimetism seemed to be prevalent, overall supporting the suggestion that a species’ social style affects the organization of group movements. As only the most tolerant species show equally shared consensus decisions whereas in others the decision is partially shared with a bias to dominant individuals the type of consensus decisions seems to follow a stepwise relation. Joining order may also follow a stepwise, however opposite, relationship, because dominance only determined joining in highly despotic, but not in intermediate and tolerant species."],["dc.identifier.doi","10.1371/journal.pone.0067285"],["dc.identifier.gro","3151448"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/9150"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/8250"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.relation.issn","1932-6203"],["dc.rights","CC BY-NC 3.0"],["dc.rights.uri","https://creativecommons.org/licenses/by-nc/3.0"],["dc.title","The Organization of Collective Group Movements in Wild Barbary Macaques (Macaca sylvanus): Social Structure Drives Processes of Group Coordination in Macaques"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","338"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Journal of Personality and Social Psychology"],["dc.bibliographiccitation.lastpage","353"],["dc.bibliographiccitation.volume","109"],["dc.contributor.author","Adams, Mark James"],["dc.contributor.author","Majolo, Bonaventura"],["dc.contributor.author","Ostner, Julia"],["dc.contributor.author","Schülke, Oliver"],["dc.contributor.author","de Marco, Arianna"],["dc.contributor.author","Thierry, Bernard"],["dc.contributor.author","Engelhardt, Antje"],["dc.contributor.author","Widdig, Anja"],["dc.contributor.author","Gerald, Melissa S."],["dc.contributor.author","Weiss, Alexander"],["dc.date.accessioned","2017-09-07T11:54:46Z"],["dc.date.available","2017-09-07T11:54:46Z"],["dc.date.issued","2015"],["dc.description.abstract","Why regularities in personality can be described with particular dimensions is a basic question in differential psychology. Nonhuman primates can also be characterized in terms of personality structure. Comparative approaches can help reveal phylogenetic constraints and social and ecological patterns associated with the presence or absence of specific personality dimensions. We sought to determine how different personality structures are related to interspecific variation in social style. Specifically, we examined this question in 6 different species of macaques, because macaque social style is well characterized and can be categorized on a spectrum of despotic (Grade 1) versus tolerant (Grade 4) social styles. We derived personality structures from adjectival ratings of Japanese (Macaca fuscata; Grade 1), Assamese (M. assamensis; Grade 2), Barbary (M. sylvanus; Grade 3), Tonkean (M. tonkeana; Grade 4), and crested (M. nigra; Grade 4) macaques and compared these species with rhesus macaques (M. mulatta; Grade 1) whose personality was previously characterized. Using a nonparametric method, fuzzy set analysis, to identify commonalities in personality dimensions across species, we found that all but 1 species exhibited consistently defined Friendliness and Openness dimensions, but that similarities in personality dimensions capturing aggression and social competence reflect similarities in social styles. These findings suggest that social and phylogenetic relationships contribute to the origin, maintenance, and diversification of personality. (PsycINFO Database Record (c) 2016 APA, all rights reserved)"],["dc.identifier.doi","10.1037/pspp0000041"],["dc.identifier.gro","3151490"],["dc.identifier.pmid","26030054"],["dc.identifier.pmid","26030054"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/8297"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.relation.issn","1939-1315"],["dc.title","Personality structure and social style in macaques"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","300"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","International Journal of Primatology"],["dc.bibliographiccitation.lastpage","315"],["dc.bibliographiccitation.volume","40"],["dc.contributor.author","Kuběnová, Barbora"],["dc.contributor.author","Ostner, Julia"],["dc.contributor.author","Schülke, Oliver"],["dc.contributor.author","Majolo, Bonaventura"],["dc.contributor.author","Šmilauer, Petr"],["dc.contributor.author","Konečná, Martina"],["dc.date.accessioned","2020-12-10T14:11:36Z"],["dc.date.available","2020-12-10T14:11:36Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1007/s10764-019-00086-x"],["dc.identifier.eissn","1573-8604"],["dc.identifier.issn","0164-0291"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/71129"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","The Effect of Dominance Rank on the Distribution of Different Types of Male–Infant–Male Interactions in Barbary Macaques (Macaca sylvanus)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","221"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Animal Cognition"],["dc.bibliographiccitation.lastpage","232"],["dc.bibliographiccitation.volume","20"],["dc.contributor.author","Kubenova, Barbora"],["dc.contributor.author","Konecna, Martina"],["dc.contributor.author","Majolo, Bonaventura"],["dc.contributor.author","Smilauer, Petr"],["dc.contributor.author","Ostner, Julia"],["dc.contributor.author","Schülke, Oliver"],["dc.date.accessioned","2017-09-07T11:54:44Z"],["dc.date.available","2017-09-07T11:54:44Z"],["dc.date.issued","2016"],["dc.description.abstract","Social knowledge beyond one’s direct relationships is a key in successfully manoeuvring the social world. Individuals gather information on the quality of social relationships between their group companions, which has been termed triadic awareness. Evidence of the use of triadic awareness in natural contexts is limited mainly to conflict management. Here we investigated triadic awareness in wild Barbary macaques (Macaca sylvanus) in the context of bridging interactions defined as male–infant–male interactions whereby a male (initiator, holder) presents an infant to another male (receiver, non-holder) in order to initiate an affiliative interaction with that male. Analyses based on 1263 h of focal observations on ten infants of one wild social group in Morocco supported the hypothesis that males use their knowledge of the relationship between infants and other adult males when choosing a male as a partner for bridging interactions. Specifically, (i) the number of bridging interactions among holder–infant–receiver triads was positively affected by the strength of the infant–receiver relationship and (ii) when two males were available as bridging partners, a male was more likely to be chosen as the receiver the stronger his social relationship with the infant relative to the other available male. This demonstrates that non-human primates establish triadic awareness of temporary infant–male relationships and use it in a naturally occurring affiliative context. Our results contribute to the discussion about the mechanism underlying the acquisition of triadic awareness and the benefits of its usage, and lend support to hypotheses linking social complexity to the evolution of complex cognition."],["dc.identifier.doi","10.1007/s10071-016-1041-y"],["dc.identifier.gro","3151479"],["dc.identifier.pmid","27734208"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/8284"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.relation.issn","1435-9448"],["dc.title","Triadic awareness predicts partner choice in male–infant–male interactions in Barbary macaques"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","23"],["dc.bibliographiccitation.journal","Animal Behaviour"],["dc.bibliographiccitation.lastpage","32"],["dc.bibliographiccitation.volume","95"],["dc.contributor.author","Young, Christopher"],["dc.contributor.author","Majolo, Bonaventura"],["dc.contributor.author","Schülke, Oliver"],["dc.contributor.author","Ostner, Julia"],["dc.date.accessioned","2017-09-07T11:54:35Z"],["dc.date.available","2017-09-07T11:54:35Z"],["dc.date.issued","2014"],["dc.description.abstract","Highlights• Wild male Barbary macaques formed stable, strong, differentiated social bonds.• Strong bonds endured even through intensely competitive mating seasons.• Rank and bond strength predicted which bystander males were recruited to coalitions.• Males rejected recruitment from weakly bonded and low-ranked recruiters.• Supporter selection is based on two independent criteria."],["dc.identifier.doi","10.1016/j.anbehav.2014.06.007"],["dc.identifier.gro","3151453"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/8256"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.relation.issn","0003-3472"],["dc.title","Male social bonds and rank predict supporter selection in cooperative aggression in wild Barbary macaques"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","224"],["dc.bibliographiccitation.journal","African Primates"],["dc.bibliographiccitation.lastpage","229"],["dc.bibliographiccitation.volume","7"],["dc.contributor.author","Young, C."],["dc.contributor.author","Schülke, Oliver"],["dc.contributor.author","Ostner, Julia"],["dc.contributor.author","Majolo, Bonaventura"],["dc.date.accessioned","2017-11-13T15:29:26Z"],["dc.date.available","2017-11-13T15:29:26Z"],["dc.date.issued","2012"],["dc.description.abstract","We observed the consumption of novel prey items in a wild group of Barbary macaques (Macaca sylvanus) living in the Middle Atlas Mountains, Morocco. We witnessed an adult male consuming an adult rabbit and, on a different occasion, two adult males unsuccessfully hunting a rabbit. On four occasions, we also observed three adult males catching and consuming chicks and eggs from two bird nests, on the ground and in a tree, respectively. All of these observations occurred during the May – July period when food was scarce. This is the first report of Barbary macaques consuming vertebrates in the wild."],["dc.description.abstract","Nous rapportons ici les premiers cas de consommation de matière animale chez un groupe sauvage de macaque berbère (Macaca sylvanus) habitant dans les montagnes du Moyen Atlas au Maroc. Nous avons observé un mâle adulte consommer un lapin européen (Oryctolagus cuniculus) ainsi que 2 mâles adultes chasser sans succès un autre lapin. Nous avons aussi observés des mâles adultes capturer et se nourrir de poussins et d’oeufs trouvés dans 2 nids d’Huppe fasciée (Upupa epops) et dans des nids trouvés au sol et dans les arbres, d’espèces d’oiseaux non-identifiés. Ces observations ont été faites pendant les mois de Mai à Juillet, période pendant laquelle la nourriture se faisait rare."],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/9948"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.title","Consumption of unusual prey items in the Barbary macaque (Macaca sylvanus)"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","23"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Primate Biology"],["dc.bibliographiccitation.lastpage","31"],["dc.bibliographiccitation.volume","3"],["dc.contributor.author","Seltmann, Anne"],["dc.contributor.author","Franz, Mathias"],["dc.contributor.author","Majolo, Bonaventura"],["dc.contributor.author","Qarro, Mohamed"],["dc.contributor.author","Ostner, Julia"],["dc.contributor.author","Schülke, Oliver"],["dc.date.accessioned","2017-09-07T11:54:33Z"],["dc.date.available","2017-09-07T11:54:33Z"],["dc.date.issued","2016"],["dc.description.abstract","For group-living animals it is essential to maintain the cohesiveness of the group when traveling. Individuals have to make an accurate decision about where and when to move. Communication before and during the departure of the first individual may play a crucial role in synchronizing a collective movement. We hypothesized that individuals in a wild primate group use signals or cues prior to and after departure to achieve collective movements. With two observers we used all-occurrences behavior sampling of collective movements in a group of wild Barbary macaques (Macaca sylvanus) in the Middle Atlas, Morocco. The number of individuals displaying pre-departure behavior predicted the success of an initiation of a collective movement. Pauses of the first departing individual after departure enhanced following behavior and might have served as recruitment signal. However, the opposite was the case for back-glancing, which functions as a monitoring signal in other species. Because in our study frequently back-glancing individuals were also less socially integrated, back glances may better be interpreted as indicators of hesitation and insecurity. To successfully initiate a collective movement, it seemed to be sufficient for a socially integrated group member to take action when other group members signal their willingness prior to departure and to occasionally wait for the group while moving."],["dc.description.sponsorship","Open-Access-Publikationsfonds 2016"],["dc.identifier.doi","10.5194/pb-3-23-2016"],["dc.identifier.fs","623444"],["dc.identifier.gro","3151443"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14097"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/8245"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.relation.issn","2363-4715"],["dc.rights","CC BY 3.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/3.0"],["dc.title","Recruitment and monitoring behaviors by leaders predict following in wild Barbary macaques (Macaca sylvanus)"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]