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Primates

, Volume 60, Issue 3, pp 183–189 | Cite as

Social connectivity among female Tibetan macaques (Macaca thibetana) increases the speed of collective movements

  • Gregory P. Fratellone
  • Jin-Hua Li
  • Lori K. Sheeran
  • R. S. Wagner
  • Xi Wang
  • Lixing SunEmail author
Special Feature: News and Perspectives Social networks analysis in primates, a multilevel perspective

Abstract

Social network analysis provides insights into patterns of group movements in primates, but fewer studies to date have focused on the dynamics of how such movements occur. In this study, we proposed and tested two hypotheses about the influence of sex on social connectivity and group movement in Tibetan macaques (Macaca thibetana): (1) adult females are socially more connected than are adult males and (2) social connectivity facilitates the speed of collective decision-making. We collected data from 128 successful collective movements (≥ 2 individuals followed an initiator within 5 min) over a 2-month period in a group of adult Tibetan macaques at Mt. Huangshan, China. Although high-ranking individuals of both sexes in our dataset were more central in their social network than were low-ranking individuals, our results show that affiliations between females were stronger, with more preferred associations than those between males. Groups with more females reached collective decisions faster than groups with fewer females. We conclude that female Tibetan macaques use their social networks to enhance the speed of collective decision-making, which may have associated fitness benefits.

Keywords

Social network Collective movement Decision-making Tibetan macaque 

Notes

Acknowledgements

We thank Debbie Lewis for her comments on this project. Our research was supported by grants to JHL from the National Natural Science Foundation of China (NSFC, Nos. 30970414 and 31172106) and to LKS from the National Science Foundation (OISE-1065589). We have no competing interests. This study complies with regulations of China Wildlife Conservation Association regarding the ethical treatment of research subjects, and under the law of People’s Republic of China on the protection of wildlife. The study was fully observational and our data collection did not affect the monkeys’ welfare. IACUC #A031305 and #A011403.

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Copyright information

© Japan Monkey Centre and Springer Japan KK, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Anthropology, Primate Behavior and Ecology ProgramCentral Washington UniversityEllensburgUSA
  2. 2.School of Resources and Environmental EngineeringAnhui UniversityHefeiChina
  3. 3.School of Life ScienceHefei Normal UniversityHefeiChina
  4. 4.Department of Biological Sciences, Primate Behavior and Ecology ProgramCentral Washington UniversityEllensburgUSA

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