Schülke, Oliver

[["dc.bibliographiccitation.firstpage","120"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Aggressive Behavior"],["dc.bibliographiccitation.lastpage","128"],["dc.bibliographiccitation.volume","45"],["dc.contributor.author","Paschek, Nicole"],["dc.contributor.author","Müller, Nadine"],["dc.contributor.author","Heistermann, Michael"],["dc.contributor.author","Ostner, Julia"],["dc.contributor.author","Schülke, Oliver"],["dc.date.accessioned","2022-10-06T13:32:22Z"],["dc.date.available","2022-10-06T13:32:22Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1002/ab.21801"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/115354"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-602"],["dc.relation.issn","0096-140X"],["dc.relation.orgunit","Deutsches Primatenzentrum"],["dc.title","Subtypes of aggression and their relation to anxiety in Barbary macaques"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","907"],["dc.bibliographiccitation.issue","7"],["dc.bibliographiccitation.journal","Behaviour"],["dc.bibliographiccitation.lastpage","934"],["dc.bibliographiccitation.volume","151"],["dc.contributor.author","Young, Christopher"],["dc.contributor.author","Ostner, Julia"],["dc.contributor.author","Schülke, Oliver"],["dc.date.accessioned","2017-09-07T11:54:40Z"],["dc.date.available","2017-09-07T11:54:40Z"],["dc.date.issued","2014"],["dc.description.abstract","In group living animals, there is pronounced variation in the formation and function of cooperation between males via coalitionary aggression. Pandit, van Schaik and colleagues developed a mathematical model to predict the evolution of different coalition types in group-living male primates, the PvS model. Coalitions are classified into five types dependent on the ranks of the participants and the function of the aggression. The main factor determining the coalition types expected to evolve is contest potential, an estimate of female monopolisability by individual males. We examined the model using groups of Assamese (Macaca assamensis) and Barbary macaques (Macaca sylvanus) to gain a full range of contest potentials. We observed, across groups, 393 coalitions during 3645 h of data collection. We measured contest potential on a species-specific basis dependent on the information males can infer about female reproductive state. By examining coalition formation in different populations and species, but also in the same groups over time, we showed the strengths and weaknesses of the PvS model. We discuss why our results do not fully fit the model’s predictions, including differing costs/benefits of coalition formation, such as delayed benefits via increased status, making rank-changing coalitions viable at mid–low contest potential. Alternative factors not considered by the model include the effect of male social bonds on coalition partner choice and the effect of female mate-choice on coalition target selection. Finally, we suggest possible improvements to the model and provide information on how best to test the current predictions of the PvS model."],["dc.identifier.doi","10.1163/1568539x-00003166"],["dc.identifier.gro","3151475"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/8280"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.relation.issn","0005-7959"],["dc.title","How males form coalitions against group rivals and the Pandit/van Schaik coalition model"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.contributor.author","Chalise, Mukesh K."],["dc.contributor.author","Cooper, M."],["dc.contributor.author","Ostner, Julia"],["dc.contributor.author","Schülke, Oliver"],["dc.contributor.editor","Rowe, Noel"],["dc.contributor.editor","Myers, Marc"],["dc.date.accessioned","2017-11-13T15:37:14Z"],["dc.date.available","2017-11-13T15:37:14Z"],["dc.date.issued","2016"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/9950"],["dc.language.iso","en"],["dc.notes.status","new -primates"],["dc.publisher","Pogonias Press"],["dc.publisher.place","Charlestown"],["dc.relation.isbn","978-1-940496-05-4"],["dc.relation.isbn","978-1-940496-06-1"],["dc.relation.ispartof","All the World's Primates"],["dc.title","Assam Macaque (Macaca assamensis)"],["dc.type","book_chapter"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","182"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Folia Primatologica"],["dc.bibliographiccitation.lastpage","183"],["dc.bibliographiccitation.volume","72"],["dc.contributor.author","Schülke, Oliver"],["dc.contributor.author","Kappeler, Peter M."],["dc.date.accessioned","2017-11-15T11:34:14Z"],["dc.date.available","2017-11-15T11:34:14Z"],["dc.date.issued","2001"],["dc.identifier.doi","10.1159/000049937"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/10010"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.publisher","Karger"],["dc.publisher.place","Freiburg"],["dc.relation.conference","7th Congress of the German Primate Society"],["dc.relation.eventend","2001-10-04"],["dc.relation.eventlocation","Zürich"],["dc.relation.eventstart","2001-09-30"],["dc.title","Protection from Infanticide, Male Resource Defense, Over-Dispersed Females and the Evolution of Pair-Living in a Nocturnal Lemur, Phaner furcifer"],["dc.type","conference_abstract"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","39"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Ethology"],["dc.bibliographiccitation.lastpage","51"],["dc.bibliographiccitation.volume","119"],["dc.contributor.author","O, Claudio de la"],["dc.contributor.author","Mevis, Lieke"],["dc.contributor.author","Richter, Christin"],["dc.contributor.author","Malaivijitnond, Suchinda"],["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","2012"],["dc.description.abstract","Recent research has shown that social relationships may exert positive effects on fitness. Therefore, it is expected that animals make efforts to develop and preserve close social bonds. Reconciliation is a conflict resolution mechanism, which allows buffering the negative effects of aggressive conflict on social relationships. As socioecological theories claim that intrasexual competition and conflict-shaped social interactions among macaque males, postconflict behaviour should reflect the effects of these evolutionary forces. Here, we present the results of a study on a provisioned group of Macaca arctoides in Thailand focusing exclusively on male postconflict behaviour. Through an Information Theory–Model Selection approach, we evaluated the relative support for three predictions about the occurrence of reconciliation and the quality of the opponents' social relationships. The strength of the opponents' affiliative relationship was the only variable predicting reconciliation occurrence. This agrees with the main prediction of the valuable relationship hypothesis for the function and distribution of reconciliation, which states that the opponents sharing high-quality relationships are more likely to reconcile, and this interaction is aimed to repair the disturbing effects of previous aggression on their relationship. The conciliatory tendency found among these wild males is much lower than reported previously for this species from captive conditions, matching more closely the rates reported for species with an intolerant-despotic dominance style. The results offer strong support for the importance of developing and preserving valuable relationships, even among rather intolerant males."],["dc.identifier.doi","10.1111/eth.12034"],["dc.identifier.gro","3151478"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/8283"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.relation.issn","0179-1613"],["dc.title","Reconciliation in Male Stump-tailed Macaques (Macaca arctoides): Intolerant Males Care for Their Social Relationships"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","293"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Behavioral Ecology and Sociobiology"],["dc.bibliographiccitation.lastpage","301"],["dc.bibliographiccitation.volume","55"],["dc.contributor.author","Schülke, Oliver"],["dc.contributor.author","Kappeler, Peter"],["dc.contributor.author","Zischler, Hans"],["dc.date.accessioned","2017-09-07T11:54:37Z"],["dc.date.available","2017-09-07T11:54:37Z"],["dc.date.issued","2004"],["dc.description.abstract","Sperm competition will be the inevitable consequence of polyandrous mating behavior if two or more males inseminate a single female. It has been demonstrated for a wide variety of animals that males adapt to this situation behaviorally, physiologically and morphologically, e.g. by evolving relatively large testes size to produce more sperm. All pair-living primates investigated so far were found to have relatively small testes, suggesting a monandrous mating system. We investigated the relationship between extra-pair paternity (EPP) rate as a measure of sperm competition intensity and relative testes size in a pair-living primate, the fork-marked lemur (Phaner furcifer). Paternity exclusion analyses for seven offspring using six polymorphic DNA-microsatellite markers suggested a high EPP rate. Female nocturnal travel distances were longer during the mating season, suggesting that females take an active role in achieving extra-pair copulations (EPCs). Surprisingly, fork-marked lemur testes size was relatively small compared to 23 other lemuroid primates, a result that is in contrast to predictions of sperm competition theory. Neither possible behavioral and morphological adaptations to an alternative paternity guard (i.e. mate guarding), nor sampling biases, phylogenetic constraints, and population density effects explain the absence of large testes in a species with high EPP, a phenomenon also known from birds with moderate to low EPP rates. We conclude that more data are needed on the frequency of EPCs, the timing of in-pair and extra-pair copulations, as well as the role of female choice, to explain why males of some species apparently do not adapt to sperm competition."],["dc.identifier.doi","10.1007/s00265-003-0709-x"],["dc.identifier.gro","3151465"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/8269"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.relation.issn","0340-5443"],["dc.title","Small testes size despite high extra-pair paternity in the pair-living nocturnal primate Phaner furcifer"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.journal","Behavioral Ecology"],["dc.contributor.author","Nurmi, Niina O"],["dc.contributor.author","Hohmann, Gottfried"],["dc.contributor.author","Goldstone, Lucas G"],["dc.contributor.author","Deschner, Tobias"],["dc.contributor.author","Schülke, Oliver"],["dc.date.accessioned","2020-12-10T18:17:22Z"],["dc.date.available","2020-12-10T18:17:22Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1093/beheco/ary118"],["dc.identifier.eissn","1465-7279"],["dc.identifier.issn","1045-2249"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/75074"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","The “tolerant chimpanzee”—towards the costs and benefits of sociality in female bonobos"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","571"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","International Journal of Primatology"],["dc.bibliographiccitation.lastpage","584"],["dc.bibliographiccitation.volume","34"],["dc.contributor.author","Macdonald, Sally"],["dc.contributor.author","Schülke, Oliver"],["dc.contributor.author","Ostner, Julia"],["dc.date.accessioned","2017-09-07T11:54:42Z"],["dc.date.available","2017-09-07T11:54:42Z"],["dc.date.issued","2013"],["dc.description.abstract","Seyfarth’s model of social grooming proposes that by grooming females higher ranking than themselves, females can gain access to important rank-related benefits, such as agonistic support. This, in turn, produces a distinctive pattern of grooming in which females direct their grooming up the female dominance hierarchy and compete for access to the highest ranking individuals. We aimed to test to what extent the grooming behavior of female Assamese macaques (Macaca assamensis) fits the assumptions and predictions of Seyfarth’s model. During two 1-yr sampling periods (October 2007–September 2008, May 2010–April 2011) we collected >2100 focal hours of data from a single wild group in their natural habitat at Phu Khieo Wildlife Sanctuary, Thailand. Subjects included all adult female group members (N = 12 in 2007/8; N = 15 in 2010/11). We collected detailed data on grooming interactions, approaches, and departures as well as all aggressive and submissive behaviors between all subjects. We found no evidence that grooming was exchanged for rank-related benefits. In line with this we found no evidence that the grooming of female Assamese macaques fits the pattern predicted by Seyfarth’s model. These results are surprising given that such deviations from Seyfarth’s model are relatively rare among macaques. We propose that our findings are best explained as a lack of a need for rank-related benefits by females in this group."],["dc.identifier.doi","10.1007/s10764-013-9680-1"],["dc.identifier.gro","3151467"],["dc.identifier.pmid","23588998"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/8271"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.relation.issn","0164-0291"],["dc.title","The Absence of Grooming for Rank-Related Benefits in Female Assamese Macaques (Macaca assamensis)"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.journal","International Journal of Primatology"],["dc.contributor.author","Markolf, Matthias"],["dc.contributor.author","Zinowsky, Max"],["dc.contributor.author","Keller, Judith Katharina"],["dc.contributor.author","Borys, Johannes"],["dc.contributor.author","Cillov, Ali"],["dc.contributor.author","Schülke, Oliver"],["dc.date.accessioned","2022-04-01T10:01:05Z"],["dc.date.available","2022-04-01T10:01:05Z"],["dc.date.issued","2022"],["dc.description.abstract","Abstract Developing new cost-effective methods for monitoring the distribution and abundance of species is essential for conservation biology. Passive acoustic monitoring (PAM) has long been used in marine mammals and has recently been postulated to be a promising method to improve monitoring of terrestrial wildlife as well. Because Madagascar’s lemurs are among the globally most threatened taxa, this study was designed to assess the applicability of an affordable and open-source PAM device to estimate the density of pale fork-marked lemurs ( Phaner pallescens ). Using 12 playback experiments and one fixed transect of four automated acoustic recorders during one night of the dry season in Kirindy Forest, we experimentally estimated the detection space for Phaner and other lemur vocalizations. Furthermore, we manually annotated more than 10,000 vocalizations of Phaner from a single location and used bout rates from previous studies to estimate density within the detection space. To truncate detections beyond 150 m, we applied a sound pressure level (SPL) threshold filtering out vocalizations below SPL 50 (dB re 20 μPa). During the dry season, vocalizations of Phaner can be detected with confidence beyond 150 m by a human listener. Within our fixed truncated detection area corresponding to an area of 0.07 km 2 (detection radius of 150 m), we estimated 10.5 bouts per hour corresponding to a density of Phaner of 38.6 individuals/km 2 . Our density estimates are in line with previous estimates based on individually marked animals conducted in the same area. Our findings suggest that PAM also could be combined with distance sampling methods to estimate densities. We conclude that PAM is a promising method to improve the monitoring and conservation of Phaner and many other vocally active primates."],["dc.identifier.doi","10.1007/s10764-022-00285-z"],["dc.identifier.pii","285"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/105596"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-530"],["dc.relation.eissn","1573-8604"],["dc.relation.issn","0164-0291"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","Toward Passive Acoustic Monitoring of Lemurs: Using an Affordable Open-Source System to Monitor Phaner Vocal Activity and Density"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1097"],["dc.bibliographiccitation.issue","7"],["dc.bibliographiccitation.journal","Behavioral Ecology and Sociobiology"],["dc.bibliographiccitation.lastpage","1108"],["dc.bibliographiccitation.volume","68"],["dc.contributor.author","Sukmak, Manakorn"],["dc.contributor.author","Wajjwalku, Worawidh"],["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","2014"],["dc.description.abstract","In groups with multiple males, direct mate competition may select for the evolution of dominance hierarchies that sort males into a queue for access to fertile females. The priority-of-access (PoA) model proposed by Altmann in 1962 makes explicit predictions about the resulting paternity distribution based on an interaction between male dominance rank and the overlap of female receptive phases. Here, we investigated whether the logic of the PoA model predicted the distribution of paternity across ranks in a seasonal breeder with high reproductive synchrony over six consecutive mating seasons. We studied 18 males that resided in a group of wild Assamese macaques (Macaca assamensis) in their natural habitat at Phu Khieo Wildlife Sanctuary, Thailand, between 2006 and 2011 with 5 to 13 conceptions per season. We assessed whether mate guarding increased paternity success, described “short-term” deviations from predicted paternity distribution, and examined how these are related to the number of competitors and fertile females. We determined genetic paternity of 43 (93 %) offspring born into the study group and found reproductive skew to be relatively low with 29 % alpha male paternity in accordance with the high degree of female reproductive synchrony observed. Short-term deviations from expected paternity distribution over ranks were not explained by the number of resident males or the number of conceiving females or their interaction. Within the limits of this study, these results suggest that even if males cannot discern female fertile phases, if reproduction is seasonal, and if reproductive synchrony is high, males may also compete directly over access to females."],["dc.identifier.doi","10.1007/s00265-014-1721-z"],["dc.identifier.gro","3151444"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/8246"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.relation.issn","0340-5443"],["dc.title","Dominance rank, female reproductive synchrony, and male reproductive skew in wild Assamese macaques"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]