Individual leadership and boldness in shoals of golden shiners (Notemigonus crysoleucas)

@article{Leblond2006IndividualLA,
  title={Individual leadership and boldness in shoals of golden shiners (Notemigonus crysoleucas)},
  author={C. Leblond and St{\'e}phan G. Reebs},
  journal={Behaviour},
  year={2006},
  volume={143},
  pages={1263-1280}
}
Shoals of golden shiners (Notemigonus crysoleucas) often swim along the perimeter of their large indoor tank at dawn and dusk, and can also be trained to anticipate food arrival by swimming directly towards the food source at midday. In this study all golden shiners in six shoals of 8-12 fish were individually marked with a visible implant elastomer, and shoal movement was video taped in order to determine whether some individuals consistently occupied front positions even when all shoal… 

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References

SHOWING 1-10 OF 60 REFERENCES
INFLUENCE OF BODY SIZE ON LEADERSHIP IN SHOALS OF GOLDEN SHINERS, NOTEMIGONUS CRYSOLEUCAS
Summary In shoals of uniformly-sized golden shiners ( Notemigonus crysoleucas ), a minority of individuals who know when and where food is available can lead their nai ve shoalmates to food. The
Front Individuals Lead in Shoals of Three-Spined Sticklebacks (Gasterosteus Aculeatus) and Juvenile Roach (Rutilus Rutilus)
TLDR
Fish shoals may have leaders over extended time periods by investigating swimming directions of shoals of roach and three-spined stickleback, and giving evidence for front fish having a dominant influence on the direction of the shoal.
Can a minority of informed leaders determine the foraging movements of a fish shoal?
TLDR
In a strongly gregarious species, such as the golden shiner, a minority of informed individuals can lead a shoal to food, either through social facilitation of foraging movements or by eliciting following behaviour.
Diel Foraging Behavior and Prey Selection in the Golden Shiner (Notemigonus crysoleucas)
TLDR
Diel migrations of the golden shiner from the littoral to limnetic zone of a small Michigan lake were documented through visual observations and gill netting and size of Daphnia eaten by the shiner increased dramatically across the evening feeding period.
Leadership in fish shoals
Leadership is not an inherent quality of animal groups that show directional locomotion. However, there are other factors that may be responsible for the occurrence of leadership in fish shoals, such
Daily food-anticipatory activity in golden shiners A test of endogenous timing mechanisms
Positioning Behaviour in Roach Shoals: The Role of Body Length and Nutritional State
TLDR
The results suggest that the initiation of new swimming directions in stationary shoals does not follow the same principles as positioning behaviour in shoals that are already on the move, which could provide a functional explanation for the occurrence of food-deprived fish in front positions.
Correlates of boldness in three-spined sticklebacks (Gasterosteus aculeatus)
TLDR
The results suggest that, contrary to some previous studies on other animals, bold or shy behaviour in sticklebacks is consistent between contexts.
In situ examination of boldness–shyness traits in the tropical poeciliid, Brachyraphis episcopi
The relationship between foraging and shoal position in a mixed shoal of roach (Rutilus rutilus) and chub (Leuciscus cephalus): a field study
TLDR
Feeding rates of mixed shoals of juvenile roach and chub were observed in a shallow stream near Cambridge (UK) and individuals from the starved group occupied front positions significantly more often than well-fed fish, but after 2 days this difference disappeared.
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