Pyritz, Lennart W.

[["dc.bibliographiccitation.firstpage","1268"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","International Journal of Primatology"],["dc.bibliographiccitation.lastpage","1278"],["dc.bibliographiccitation.volume","32"],["dc.contributor.author","Pyritz, Lennart W."],["dc.contributor.author","King, Andrew J."],["dc.contributor.author","Sueur, Cédric"],["dc.contributor.author","Fichtel, Claudia"],["dc.date.accessioned","2017-09-07T11:47:08Z"],["dc.date.available","2017-09-07T11:47:08Z"],["dc.date.issued","2011"],["dc.description.abstract","Research on coordination and decision-making in humans and nonhuman primates has increased considerably throughout the last decade. However, terminology has been used inconsistently, hampering the broader integration of results from different studies. In this short article, we provide a glossary containing the central terms of coordination and decision-making research. The glossary is based on previous definitions that have been critically revised and annotated by the participants of the symposium \"Where next? Coordination and decision-making in primate groups\" at the XXIIIth Congress of the International Primatological Society (IPS) in Kyoto, Japan. We discuss a number of conceptual and methodological issues and highlight consequences for their implementation. In summary, we recommend that future studies on coordination and decision-making in animal groups do not use the terms \"combined decision\" and \"democratic/despotic decision-making.\" This will avoid ambiguity as well as anthropocentric connotations. Further, we demonstrate the importance of 1) taxon-specific definitions of coordination parameters (initiation, leadership, followership, termination), 2) differentiation between coordination research on individual-level process and group-level outcome, 3) analyses of collective action processes including initiation and termination, and 4) operationalization of successful group movements in the field to collect meaningful and comparable data across different species."],["dc.identifier.doi","10.1007/s10764-011-9524-9"],["dc.identifier.gro","3150617"],["dc.identifier.pmid","22207769"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/7160"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/7394"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.relation.issn","0164-0291"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject","Animal groups; Coordination; Decision-making; Terminology"],["dc.title","Reaching a Consensus: Terminology and Concepts Used in Coordination and Decision-Making Research"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","681"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Behavioural Processes"],["dc.bibliographiccitation.lastpage","684"],["dc.bibliographiccitation.volume","84"],["dc.contributor.author","Pyritz, Lennart W."],["dc.contributor.author","Fichtel, Claudia"],["dc.contributor.author","Kappeler, Peter"],["dc.date.accessioned","2017-09-07T11:48:53Z"],["dc.date.available","2017-09-07T11:48:53Z"],["dc.date.issued","2010"],["dc.description.abstract","In our commentary, we highlight several conceptual and methodological problems that have hampered broader integration of studies of collective group movements. Specifically, we argue that studies of captive animals should only be used to elucidate behavioural mechanisms. Moreover, the diversity of physical environments in which group movements occur as well as the social diversity of groups deserve more consideration in integrative studies. Furthermore, tests of predictions based on modelling studies are often hampered by the fact that models include variables that are difficult or impossible to measure in real animals. We also advocate the use of an empirical, rather than subjective establishment of operational definitions of group movements and the associated individual roles. Finally, we emphasize the utility of controlled experiments in the study of collective decision-making and group movements and encourage their wider application."],["dc.identifier.doi","10.1016/j.beproc.2010.02.025"],["dc.identifier.gro","3150898"],["dc.identifier.pmid","20211229"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/7696"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.issn","0376-6357"],["dc.subject","Group coordination; Leadership; Group movements; Primates; Decision-making"],["dc.title","Conceptual and methodological issues in the comparative study of collective group movements"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1325"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","International Journal of Primatology"],["dc.bibliographiccitation.lastpage","1347"],["dc.bibliographiccitation.volume","32"],["dc.contributor.author","Pyritz, Lennart W."],["dc.contributor.author","Kappeler, Peter"],["dc.contributor.author","Fichtel, Claudia"],["dc.date.accessioned","2017-09-07T11:48:56Z"],["dc.date.available","2017-09-07T11:48:56Z"],["dc.date.issued","2011"],["dc.description.abstract","Group-living species have to coordinate collective actions to maintain cohesion. In primates, spatial movements represent a meaningful model to study group coordination processes across different socio-ecological contexts. We studied 4 groups of red-fronted lemurs (Eulemur rufifrons) in Kirindy Forest, Madagascar, between 2008 and 2010 across different ecological and reproductive seasons. We collected data on ranging patterns using GPS collars and observational data on different predefined parameters of group movements, including initiation, leadership, followership, overtaking events, termination, and travel distances. Cohesion of these relatively small, egalitarian lemur groups was high year-round, but daily path length and home range size varied considerably between ecological seasons, presumably due to long-distance migrations of some groups at the beginning of the rainy season. Individuals of different age and sex classes successfully initiated group movements. However, stable female leadership prevailed year-round, irrespective of ecological and reproductive season, which might be due to higher or more specific energetic requirements of reproduction. In contrast to lemur species with a more despotic social structure, female red-fronted lemurs did not recruit more followers than males. Adult leaders recruited more followers than subadult ones. Further, recruitment success was higher during the peak of the dry season, when predation risk appeared to be higher. Distances of single group movements did not depend on the initiator’s sex and age or on ecological seasons. Our results provide new insights into seasonal variability of coordination processes and the role of social dominance in lemur group movements, thereby contributing to a comparative perspective from a primate radiation that evolved group living independently of anthropoids."],["dc.identifier.doi","10.1007/s10764-011-9549-0"],["dc.identifier.gro","3150904"],["dc.identifier.pmid","22207771"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/7162"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/7703"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.relation.issn","0164-0291"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject","Cohesion; Eulemur rufifrons; Followership; Leadership; Overtaking"],["dc.title","Coordination of Group Movements in Wild Red-fronted Lemurs (Eulemur rufifrons): Processes and Influence of Ecological and Reproductive Seasonality"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","37"],["dc.bibliographiccitation.lastpage","56"],["dc.contributor.author","Fichtel, Claudia"],["dc.contributor.author","Pyritz, Lennart W."],["dc.contributor.author","Kappeler, Peter M."],["dc.contributor.editor","Boos, Margarete"],["dc.contributor.editor","Kolbe, Michaela"],["dc.contributor.editor","Kappeler, Peter"],["dc.contributor.editor","Ellwart, Thomas"],["dc.date.accessioned","2018-03-29T10:06:13Z"],["dc.date.available","2018-03-29T10:06:13Z"],["dc.date.issued","2011"],["dc.description.abstract","Many animals are organised into social groups. Because individuals have different preferences and diverging needs, conflicts of interests exist; these conflicts are particularly revealed and negotiated in the context of group movements. Thus, group movements provide an excellent example to study coordination processes in non-human primates. In this chapter we review several aspects related to group movements in non-human primates. We first summarise the current understanding of variation in spacing patterns, types of leadership, and decision-making processes. We then focus on methodological issues and discuss various operational definitions of group movements, and we propose an operational definition that has already been applied successfully in studies of small free-ranging groups. We conclude by discussing the possibilities and limitations of transferring concepts and methods from studies of non-human primate groups to research on human groups."],["dc.identifier.doi","10.1007/978-3-642-15355-6_3"],["dc.identifier.gro","3150814"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/13193"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.publisher","Springer"],["dc.publisher.place","Berlin"],["dc.relation.doi","10.1007/978-3-642-15355-6"],["dc.relation.isbn","978-3-642-15354-9"],["dc.relation.ispartof","Coordination in Human and Primate Groups"],["dc.title","Coordination of Group Movements in Non-human Primates"],["dc.type","book_chapter"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","e53144"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","PLoS ONE"],["dc.bibliographiccitation.volume","8"],["dc.contributor.author","Pyritz, Lennart W."],["dc.contributor.author","Fichtel, Claudia"],["dc.contributor.author","Huchard, Elise"],["dc.contributor.author","Kappeler, Peter"],["dc.date.accessioned","2017-09-07T11:48:52Z"],["dc.date.available","2017-09-07T11:48:52Z"],["dc.date.issued","2013"],["dc.description.abstract","Social animals have to coordinate joint movements to maintain group cohesion, but the latter is often compromised by diverging individual interests. A widespread behavioral mechanism to achieve coordination relies on shared or unshared consensus decision-making. If consensus costs are high, group fission represents an alternative tactic. Exploring determinants and outcomes of spontaneous group decisions and coordination of free-ranging animals is methodologically challenging. We therefore conducted a foraging experiment with a group of wild redfronted lemurs (Eulemur rufifrons) to study decision outcomes, coordination of movements, individual foraging benefits and social interactions in response to the presentation of drinking platforms with varying baiting patterns. Behavioral observations were complemented with data from recordings of motion detector cameras installed at the platforms. The animal's behavior in the experimental conditions was compared to natural group movements. We could not determine the type of consensus decision-making because the group visited platforms randomly. The group fissioned during 23.3% of platform visits, and fissioning resulted in more individuals drinking simultaneously. As under natural conditions, adult females initiated most group movements, but overtaking by individuals of different age and sex classes occurred in 67% of movements to platforms, compared to only 18% during other movements. As a result, individual resource intake at the platforms did not depend on departure position, age or sex, but on arrival order. Aggression at the platforms did not affect resource intake, presumably due to low supplanting rates. Our findings highlight the diversity of coordination processes and related consequences for individual foraging benefits in a primate group living under natural conditions."],["dc.identifier.doi","10.1371/journal.pone.0053144"],["dc.identifier.gro","3150888"],["dc.identifier.pmid","23326392"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/8549"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/7685"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.relation.issn","1932-6203"],["dc.rights","CC BY 2.5"],["dc.rights.uri","https://creativecommons.org/licenses/by/2.5"],["dc.title","Determinants and Outcomes of Decision-Making, Group Coordination and Social Interactions during a Foraging Experiment in a Wild Primate"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]