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Circadian and ultradian oscillations in bilateral rhythms of the crayfish chelipeds

Circadian systems are composed of multiple oscillatory elements that contain both circadian and ultradian oscillations. The relationships between these components maintain a stable temporal function in organisms. They provide a suitable phase to recurrent environmental changes and ensure a suitable...

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Autor principal: Viccon-Pale, José A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9630741/
https://www.ncbi.nlm.nih.gov/pubmed/36339967
http://dx.doi.org/10.3389/fnint.2022.876137
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author Viccon-Pale, José A.
author_facet Viccon-Pale, José A.
author_sort Viccon-Pale, José A.
collection PubMed
description Circadian systems are composed of multiple oscillatory elements that contain both circadian and ultradian oscillations. The relationships between these components maintain a stable temporal function in organisms. They provide a suitable phase to recurrent environmental changes and ensure a suitable temporal sequence of their own functions. Therefore, it is necessary to identify these interactions. Because a circadian rhythm of activity can be recorded in each crayfish cheliped, this paired organ system was used to address the possibility that two quasi-autonomous oscillators exhibiting both circadian and ultradian oscillations underlie these rhythms. The presence of both oscillations was found, both under entrainment and under freerunning. The following features of interactions between these circadian and ultradian oscillations were also observed: (a) circadian modal periods could be a feature of circadian oscillations under entrainment and freerunning; (b) the average period of the rhythm is a function of the proportions between the circadian and ultradian oscillations; (c) the release of both populations of oscillations of Zeitgeber effect results in the maintenance or an increase in their number and frequency under freerunning conditions. These circadian rhythms of activity can be described as mixed probability distributions containing circadian oscillations, individual ultradian oscillations, and ultradian oscillations of Gaussian components. Relationships among these elements can be structured in one of the following six probability distributions: Inverse Gaussian, gamma, Birnbaum–Saunders, Weibull, smallest extreme value, or Laplace. It should be noted that at one end of this order, the inverse Gaussian distribution most often fits the freerunning rhythm segments and at the other end, the Laplace distribution fits only the segments under entrainment. The possible relationships between the circadian and ultradian oscillations of crayfish motor activity rhythms and between the probability distributions of their periodograms are discussed. Also listed are some oscillators that could interact with cheliped rhythms.
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spelling pubmed-96307412022-11-04 Circadian and ultradian oscillations in bilateral rhythms of the crayfish chelipeds Viccon-Pale, José A. Front Integr Neurosci Neuroscience Circadian systems are composed of multiple oscillatory elements that contain both circadian and ultradian oscillations. The relationships between these components maintain a stable temporal function in organisms. They provide a suitable phase to recurrent environmental changes and ensure a suitable temporal sequence of their own functions. Therefore, it is necessary to identify these interactions. Because a circadian rhythm of activity can be recorded in each crayfish cheliped, this paired organ system was used to address the possibility that two quasi-autonomous oscillators exhibiting both circadian and ultradian oscillations underlie these rhythms. The presence of both oscillations was found, both under entrainment and under freerunning. The following features of interactions between these circadian and ultradian oscillations were also observed: (a) circadian modal periods could be a feature of circadian oscillations under entrainment and freerunning; (b) the average period of the rhythm is a function of the proportions between the circadian and ultradian oscillations; (c) the release of both populations of oscillations of Zeitgeber effect results in the maintenance or an increase in their number and frequency under freerunning conditions. These circadian rhythms of activity can be described as mixed probability distributions containing circadian oscillations, individual ultradian oscillations, and ultradian oscillations of Gaussian components. Relationships among these elements can be structured in one of the following six probability distributions: Inverse Gaussian, gamma, Birnbaum–Saunders, Weibull, smallest extreme value, or Laplace. It should be noted that at one end of this order, the inverse Gaussian distribution most often fits the freerunning rhythm segments and at the other end, the Laplace distribution fits only the segments under entrainment. The possible relationships between the circadian and ultradian oscillations of crayfish motor activity rhythms and between the probability distributions of their periodograms are discussed. Also listed are some oscillators that could interact with cheliped rhythms. Frontiers Media S.A. 2022-10-20 /pmc/articles/PMC9630741/ /pubmed/36339967 http://dx.doi.org/10.3389/fnint.2022.876137 Text en Copyright © 2022 Viccon-Pale. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Neuroscience
Viccon-Pale, José A.
Circadian and ultradian oscillations in bilateral rhythms of the crayfish chelipeds
title Circadian and ultradian oscillations in bilateral rhythms of the crayfish chelipeds
title_full Circadian and ultradian oscillations in bilateral rhythms of the crayfish chelipeds
title_fullStr Circadian and ultradian oscillations in bilateral rhythms of the crayfish chelipeds
title_full_unstemmed Circadian and ultradian oscillations in bilateral rhythms of the crayfish chelipeds
title_short Circadian and ultradian oscillations in bilateral rhythms of the crayfish chelipeds
title_sort circadian and ultradian oscillations in bilateral rhythms of the crayfish chelipeds
topic Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9630741/
https://www.ncbi.nlm.nih.gov/pubmed/36339967
http://dx.doi.org/10.3389/fnint.2022.876137
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