Abteilung Verhaltensökologie

[["dc.bibliographiccitation.journal","Mammalian Biology"],["dc.contributor.author","Anzà, Simone"],["dc.contributor.author","Berghänel, Andreas"],["dc.contributor.author","Ostner, Julia"],["dc.contributor.author","Schülke, Oliver"],["dc.date.accessioned","2022-10-04T10:21:17Z"],["dc.date.available","2022-10-04T10:21:17Z"],["dc.date.issued","2022"],["dc.description.abstract","Abstract\n \n Socioecological factors are associated with life-history patterns and growth trajectories among primates. Under certain conditions, selection may favor a temporal decoupling of growth and major life-history events such as sexual maturation or natal dispersal. Yet, empirical tests of these associations in wild populations remain scarce owing to the lack of non-invasive methods to capture growth trajectories. In this study, we first compared two non-invasive methods of digital photogrammetry. Then, we used parallel laser photogrammetry to investigate forearm growth of wild Assamese macaque males and females in their natural habitat at Phu Khieo Wildlife Sanctuary, Thailand to test life-history and socio-ecological hypotheses. Across 48 males and 44 females, we estimated growth trajectories and pseudo-velocity curves by applying quadratic plateau models and non-parametric LOESS regressions. We assessed the development of sexual dimorphism by comparing the sexes at five different ages. Females had completed 96% of their growth at the age at first birth (5.9 years) and ceased growing at 7.1 years of age. Males, in contrast, grew until well after their average age of natal dispersal: they reached 81% of their size at the age of natal dispersal (4.0 years), and ceased growing only at 9.0 years of age, much later than females. Sexual dimorphism in forearm length was driven by an extended growth period in males, which is expected for males dispersing between multimale and multifemale groups and not facing the risk of being ousted by other larger males. Our results contradict the\n neonatal investment hypothesis\n that predicts a desynchronization of investment in growth and reproduction only in female baboons, but not other papionins producing cheaper neonates. Furthermore, male Assamese macaques do not delay natal dispersal until they are fully grown, in accordance with predictions of the\n male-career-framework\n for species with low to medium level of direct competition."],["dc.description.sponsorship"," Deutsche Forschungsgemeinschaft 501100001659"],["dc.description.sponsorship"," Georg-August-Universität Göttingen 501100003385"],["dc.identifier.doi","10.1007/s42991-022-00262-2"],["dc.identifier.pii","262"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/114370"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-600"],["dc.relation.eissn","1618-1476"],["dc.relation.issn","1616-5047"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","Growth trajectories of wild Assamese macaques (Macaca assamensis) determined from parallel laser photogrammetry"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","19344"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Scientific Reports"],["dc.bibliographiccitation.volume","11"],["dc.contributor.author","Anzà, Simone"],["dc.contributor.author","Demuru, Elisa"],["dc.contributor.author","Palagi, Elisabetta"],["dc.date.accessioned","2021-10-01T09:58:11Z"],["dc.date.available","2021-10-01T09:58:11Z"],["dc.date.issued","2021"],["dc.description.abstract","Abstract The Biological Market Theory (BMT) posits that cooperation between non-human animals can be seen as a mutually beneficial exchange of commodities similarly to what observed in human economic markets. Positive social interactions are commodities in non-human animals, and mutual exchanges fulfilling the criteria of the BMT have been shown in several species. However, the study of biological markets suffers from methodological limitations that are mainly linked to the difficulty of clearly identifying the currencies and their exchanges in the short-term. Here, we test whether bonobo females are more attractive during their maximum swelling phase, whether they exchange grooming and Genito-Genital Rubbing (GGR) on a daily level of analysis, and whether these daily exchanges fulfil the BMT criteria. Females engaged more in GGR when their sexual swelling was in the maximum phase. Moreover, they exchanged grooming and sex according to the daily “market fluctuations” associated with swelling status. Females in the minimum phase (low-value) increased their probability to engage in GGR with females in the maximum phase (high-value) by grooming them preferentially. In line with the supply/demand law, the female grooming strategy varied depending on the daily number of swollen females present: the higher the number of swollen females, the lower the individual grooming preference. As a whole, our study confirms BMT as a valid model to explain daily commodity exchanges as a function of the temporary value of traders, and underlines the importance of a day-by-day approach to unveil the presence of a biological market when the value of traders frequently changes."],["dc.description.sponsorship","Open-Access-Publikationsfonds 2021"],["dc.identifier.doi","10.1038/s41598-021-98894-w"],["dc.identifier.pii","98894"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/90007"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-469"],["dc.relation.eissn","2045-2322"],["dc.rights","CC BY 4.0"],["dc.title","Sex and grooming as exchange commodities in female bonobos’ daily biological market"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]