Effect of the light intensity upon the agonistic behaviour of Juvenile of white-seabream (Diplodus sargus cadenati de la Paz, Bauchot and Daget, 1974)

Abstract

Ambient light levels were manipulated to vary potential predation risk, and aggressive behaviour was examined. Juveniles of white‐seabream (Diplodus sargus cadenati) interacted aggressively more frequently at intermediate light intensity (500 lux), being agonistic interactions at higher (3000 lux) or lower (5 lux) illumination less frequent.