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Circadian organization in white suckersCatostomus commersoni: The role of the pineal organ

Authors
Journal
Comparative Biochemistry and Physiology Part A Physiology
0300-9629
Publisher
Elsevier
Publication Date
Volume
68
Issue
1
Identifiers
DOI: 10.1016/0300-9629(81)90332-7

Abstract

Abstract 1. 1. Pinealectomy of the white sucker, Catostomus commersoni, had significant effects on the free-running circadian rhythm of locomotor activity. With fish kept under constant darkness pinealectomy resulted in a significant alteration in period length and decrease in the precision of circadian activity. 2. 2. In a number of cases circadian activity was split into two components that free-ran independently. 3. 3. The pineal organ is suggested to function in the coupling of a multi-oscillator system making up circadian organization in this fish.

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