Circadian locomotor activity in Japanese sea catfish Plotosus lineatus

Abstract

To find out whether or not the locomotor activity of the Japanese sea catfish, Plotosus lineatus, shows a circadian rhythmicity, the locomotor activity of this catfish was recorded in a laboratory. All of the catfish recorded (n = 20) showed a nocturnal locomotor activity rhythm under a light–dark (LD) cycle (LD 12:12). The locomotor activity started after… (More)
DOI: 10.1007/s12562-008-0001-0

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