Using multiplex networks to capture the multidimensional nature of social structure
Network analysis has increasingly expanded our understanding of social structure in primates and other animal species. However, most studies use networks representing only one interaction type, when social relationships (and the emerging social structure) are the result of many types of interactions and their interplay through time. The recent development of tools facilitating the integrated analysis of multiple interaction types using multiplex networks has opened the possibility of extending the insight provided by social network analysis. We use a multiplex representation of interactions among the members of a group of wild Geoffroy’s spider monkeys (Ateles geoffroyi), to study their social structure. We constructed a six-layered multiplex network based on three indices of overt social interactions (aggression, embraces, grooming) and three distance-based indices (contact, proximity, and association). With tools provided by the MuxViz software, we assessed the relevance of including all six indices in our analysis, the role of individuals in the network (through node versatility), and the presence of modules and non-random triadic structures or motifs. The multiplex provided information which was not equivalent to any individual layer or to the simple aggregation of layers. Network patterns based on associations did not correspond with those observed for overt-interactions or for the multiplex structure. Males were the most versatile individuals, while multiplex modularity and motifs highlighted the relevance of different interaction types for the overall connectivity of the network. We conclude that the multiplex approach improves on previous methods by retaining valuable information from each interaction type and how it is patterned among individuals.
KeywordsSocial network analysis Multilayer networks Social interactions Robert Hinde Ateles geoffroyi Node versatility
We thank Ivan Puga, Sebastian Sosa, and Cédric Sueur for their invitation to participate in this special issue. We also thank Anthony R. Denice for his outstanding contribution in data collection, Augusto Canul, Eulogio Canul, Juan Canul, and Macedonio Canul for their valuable assistance during fieldwork, and Dr. Kelly Finn together with an anonymous reviewer for their valuable and useful comments and suggestions. SSA would also like to thank Sherie Simms for support and inspiration throughout the writing of this paper. We are also indebted to the Chester Zoo, The National Geographic Society, the Instituto Politécnico Nacional and the Consejo Nacional por la Ciencia y la Tecnologia (CONACyT) for financial support. We conducted this research with permission from CONANP and SEMARNAT (SGPA/DGVS/00910/13 and SGPA/DGVS/02716/14).
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
All applicable international, national, and/or institutional guidelines for the care and use of animals were followed.
- Campbell CJ (2006) Copulation in free-ranging black-handed spider monkeys. Am J Primatol 68:1–5Google Scholar
- De Domenico MD, Solé-Ribalta A (2013) Centrality in interconnected multilayer networks. arXiv, pp 1–12. https://doi.org/10.1038/ncomms7868
- De Domenico M, Nicosia V, Arenas A, Latora V (2014a) Layer aggregation and reducibility of multilayer interconnected networks, pp 1–7. https://doi.org/10.1038/ncomms7864
- Finn KR, Silk MJ, Porter MA, Pinter-Wollman N (2017) Novel insights into animal sociality from multilayer networks. arXiv preprint arXiv:1712.01790, pp 1–44
- García-Frapolli E, Ayala-Orozco B, Bonilla-Moheno M, Espadas-Manrique C, Ramos-Fernández G (2007) Biodiversity conservation, traditional agriculture and ecotourism: land cover/land use change projections for a natural protected area in the northeastern Yucatan Peninsula, Mexico. Lands Urban Plan 83 (2–3):137–153. https://doi.org/10.1016/j.landurbplan.2007.03.007 CrossRefGoogle Scholar
- Palacios T, Castellanos F, Ramos-Fernandez G (2018) Uncovering the decision rules behind collective foraging in spider monkeys. Anim Behav (in revision) Google Scholar
- R Core Team (2017) R: a language and environment for statistical computing. R Foundation for Statistical Computing, ViennaGoogle Scholar
- Ramos-Fernández G, Aureli F, Schaffner CM, Vick LG (2018) Ecología, comportamiento y conservación de los monos araña (Ateles geoffroyi): 20 años de estudio. In: Urbani B, Kowalewski M, Teixeira da Cunha RG, de la Torre S, Cortés-Ortiz L (eds) La primatología en Latinoamérica 2/A primatologia na America Latina 2. Instituto Venezolano de Investigaciones Científicas, Caracas, pp 531–544Google Scholar
- Rimbach R, Bisanzio D, Galvis N et al (2015) Brown spider monkeys (Ateles hybridus): a model for differentiating the role of social networks and physical contact on parasite transmission dynamics. Philos Trans R Soc B Biol Sci 370:20140110. https://doi.org/10.1098/rstb.2014.0110 CrossRefGoogle Scholar
- Schaffner CM, Rebecchini L, Ramos-Fernández G et al (2012) Spider monkeys (Ateles geoffroyi yucatenensis) cope with the negative consequences of hurricanes through changes in diet, activity budget, and fission–fusion dynamics. Int J Primatol 33:922–936. https://doi.org/10.1007/s10764-012-9621-4 CrossRefGoogle Scholar
- Sistema Meteorológico Nacional (2015) Normales climatológicas en la estación 00023012 (Cobá, Quintana Roo), periodo 1980–2010. Servicio Meteorológico Nacional, Comisión Nacional del Agua, MéxicoGoogle Scholar
- Slater K (2007) Sex differences in the social relationships of wild spider monkeys (Ateles geoffroyi yucatanesis). Dissertation, University of LiverpoolGoogle Scholar
- Sueur C, King A, Pelé M, Petit O (2013) Fast and accurate decisions as a result of scale-free network properties in two primate species. In: Gilbert T, Kirkilionis M, Nicolis G (eds) Proceedings of the European conference on complex systems 2012. Springer International Publishing, pp 579–584Google Scholar