Oscillations in shoal cohesion in zebrafish (Danio rerio).
In many species, group cohesion may be the result of a compromise between opposing forces (e.g. predator avoidance and competition for food). However, little empirical data exists on the dynamics of group cohesion. We present moment-to-moment positional data on zebrafish shoals and analyze temporal changes in inter-individual distances. We demonstrate that the distance between shoal members does not settle at any given value, as has previously been assumed, but oscillates with a period between 5 and 15s.
Miller
Noam Y
NY
Department of Psychology, University of Toronto at Mississauga, 3359 Mississauga Road North, Mississauga, Toronto, Ontario, L5L 1C6 Canada. noam.miller@utoronto.ca
Gerlai
Robert
R
D000818:Animals; D001522:Behavior, Animal / Q000502:physiology*; D035841:Behavioral Research / Q000295:instrumentation* / Q000379:methods; D006185:Habituation, Psychophysiologic / Q000502:physiology; D009043:Motor Activity / Q000502:physiology*; D011235:Predatory Behavior / Q000502:physiology*; D012044:Regression Analysis; D012919:Social Behavior; D012984:Software; D013550:Swimming / Q000502:physiology; D013997:Time Factors; D015027:Zebrafish