1. School of Life Sciences, Sun Yat-sen University, Guangzhou, People's Republic of China
2. Princeton School of Public and International Affairs, Princeton University, Princeton, NJ 08540, USA
3. Eli Lilly and Company, Indianapolis, IN 46225, USA
4. Department of Biology, University of Konstanz, Konstanz, Germany
5. Centre for the Advanced Study of Collective Behaviour, University of Konstanz, Konstanz, Germany
6. Department of Collective Behavior, Max Planck Institute of Animal Behavior, Konstanz, Germany
7. School of Ecology, Sun Yat-sen University, Shenzhen, People's Republic of China
8. State Key Laboratory of Biological Control, Sun Yat-sen University, Guangzhou, People's Republic of China