期刊
ELIFE
卷 9, 期 -, 页码 -出版社
ELIFE SCIENCES PUBLICATIONS LTD
DOI: 10.7554/eLife.59902
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资金
- Max Planck Society
- Daimler und Benz Stiftung [32-03/16]
- Association for the Study of Animal Behaviour
- Horizon 2020 - Research and Innovation Framework Programme grant [850859]
- DAAD
- National Geographic Society Early Career Grant [WW175ER-17]
- International Max Planck Research School for Organismal Biology
- Deutsche Forschungsgemeinschaft Centre of Excellence 2117 Centre for the Advanced Study of Collective Behaviour [422037984]
A challenge of group-living is to maintain cohesion while navigating through heterogeneous landscapes. Larger groups benefit from information pooling, translating to greater 'collective intelligence', but face increased coordination challenges. If these facets interact, we should observe a non-linear relationship between group size and collective movement. We deployed high-resolution GPS tags to vulturine guineafowl from 21 distinct social groups and used continuous-time movement models to characterize group movements across five seasons. Our data revealed a quadratic relationship between group size and movement characteristics, with intermediate-sized groups exhibiting the largest home-range size and greater variation in space use. Intermediate-sized groups also had higher reproductive success, but having more young in the group reduced home-range size. Our study suggests the presence of an optimal group size, and composition, for collective movement.
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