. "[A5FA5883B61C]" . "Sinusoidal cycling swimming pattern of reservoir fishes." . "2"^^ . "456;471" . . . "RIV/60077387:_____/02:62023112" . "GB - Spojen\u00E9 kr\u00E1lovstv\u00ED Velk\u00E9 Brit\u00E1nie a Severn\u00EDho Irska" . "Journal of Fish Biology" . . "0"^^ . "\u010Cech, Martin" . . . "Sinusoidal cycling swimming pattern of reservoir fishes."@en . "0"^^ . "2"^^ . . "663686" . . "A circular transducer fixed on the bottom close to the deepest point of the Rimov Reservoir and beaming up towards the surface showed that most fishes stayed in the epilimnion during the summer. The majority of larger fish in open water performed characteristic sinusoidal movements in the vertical plane during July and August days. As they crossed the sonar beam, the fish changed their depth several times. Fish started to swim up-and-down after sunrise and continued doing so during daytime. The sinusoidal movement pattern was replaced by direct movement before sunset. Variation of target strength indicates active changes of fish tilt in transient phases of the sinusoidal cycle rather than changes of swim bladder volume. Up-and-down fish swimming is likely to be an efficient way of visual inspecting a larger volume of the epilimnion for prey - large zooplankton, whose epilimnetic density in the reservoir is low and patchy in summer time." . . . . . . "P(GA206/02/0520), P(IAA6017201), P(IAA6017901), Z(AV0Z6017912)" . . "sinusoidal swimming; echosounder; reservoir"@en . "A circular transducer fixed on the bottom close to the deepest point of the Rimov Reservoir and beaming up towards the surface showed that most fishes stayed in the epilimnion during the summer. The majority of larger fish in open water performed characteristic sinusoidal movements in the vertical plane during July and August days. As they crossed the sonar beam, the fish changed their depth several times. Fish started to swim up-and-down after sunrise and continued doing so during daytime. The sinusoidal movement pattern was replaced by direct movement before sunset. Variation of target strength indicates active changes of fish tilt in transient phases of the sinusoidal cycle rather than changes of swim bladder volume. Up-and-down fish swimming is likely to be an efficient way of visual inspecting a larger volume of the epilimnion for prey - large zooplankton, whose epilimnetic density in the reservoir is low and patchy in summer time."@en . . . "2" . . . "Kube\u010Dka, Jan" . "61" . "Sinusoidal cycling swimming pattern of reservoir fishes." . "RIV/60077387:_____/02:62023112!RIV/2003/GA0/A62003/N" . . "Sinusoidal cycling swimming pattern of reservoir fishes."@en . . "0022-1112" . "16"^^ .