Open AccessMAGNETIC FLUCTUATIONS AFFECT CIRCADIAN PATTERNS OF LOCOMOTOR ACTIVITY IN ZEBRAFISH (PRELIMINARY DATA)
Author(s) -
В. В. Крылов,
Е. И. Извеков,
В. В. Павлова,
N. A. Pankova,
Elena A. Osipova
Publication year - 2021
Publication title -
trudy - institut biologii vnutrennih vod/trudy instituta biologii vnutrennih vod im. i.d. papanina ran
Language(s) - English
Resource type - Journals
eISSN - 2712-8377
pISSN - 0320-3557
DOI - 10.47021/0320-3557-2021-15-25
Subject(s) - zebrafish , circadian rhythm , danio , entrainment (biomusicology) , locomotor activity , rhythm , biology , period (music) , cryptochrome , neuroscience , circadian clock , phase response curve , medicine , endocrinology , physics , genetics , acoustics , gene
The locomotor activity of zebrafish (Danio rerio) has a pronounced, well-studied circadian rhythm. Under constant illumination, the period of free-running locomotor activity in this species usually becomes less than 24 hours. To evaluate the entraining capabilities of slow magnetic variations, zebrafish locomotor activity was evaluated at constant illumination and fluctuating magnetic field with a period of 26.8 hours. Lomb-Scargle periodogram revealed significant free-running rhythms of locomotor activity and related behavioral endpoints with a period close to 27 hours. Obtained results reveal the potential of slow magnetic fluctuations for entrainment of the circadian rhythms in zebrafish. The putative mechanisms responsible for the entrainment are discussed, including the possible role of cryptochromes.