| Title: | Effects of external cues and group mate body size on the collective behavior of shoaling crucian carp |
| Address: | "Laboratory of Evolutionary Physiology and Behaviour, College of Life Sciences, Chongqing Normal University, Key Laboratory of Animal Biology of Chongqing, Chongqing 401331, China. Laboratory of Evolutionary Physiology and Behaviour, College of Life Sciences, Chongqing Normal University, Key Laboratory of Animal Biology of Chongqing, Chongqing 401331, China. Electronic address: lingqingzeng@cqnu.edu.cn" |
| DOI: | 10.1016/j.beproc.2023.104873 |
| ISSN/ISBN: | 1872-8308 (Electronic) 0376-6357 (Linking) |
| Abstract: | "Chemical alarm cues (CACs) play a key role in the predatorprey relationship in fish. Chemical cues in the aquatic environment have an impact on the individual and group behavior of fish, and differences in these behavioral responses might be related to the body size of group members. Here, we used juvenile crucian carp (Carassius carassius) as an animal model to examine the effects of different cues and group mate body sizes on the individual and group behavior of shoaling fish. Three group mate body size (small, large, and mixed size) and three pheromone (rearing tank water, food, and CACs) treatments were combined in our study, with each treatment having 16 groups of five fish. We found that the individual swimming speed of the mixed group increased after injecting rearing water and food cues in the tank. After injecting CACs, the individual swimming speed of both the small and mixed groups increased, while that of the large group did not change. After the injection of CACs, the group speed of the small group was higher than that of the large and mixed groups. After the food cues were added to the tank, the synchronization of speed of the small group was higher than that of the mixed and large groups. Both the interindividual distance and nearest-neighbor distance of the mixed group remained unchanged after injecting CACs. Our study indicated that the impact of external cues on the individual and collective behavior of fish is related to the difference in body size of group mates" |
| Keywords: | Animals *Carps Mass Behavior Cues Water Body Size Chemical alarm cues Group alignment Group cohesion Group polarization Heterogeneity; |
| Notes: | "MedlineCao, Bing Luo, Huan Zeng, Ling-Qing eng Netherlands 2023/04/07 Behav Processes. 2023 May; 208:104873. doi: 10.1016/j.beproc.2023.104873. Epub 2023 Apr 5" |
