The fractal organization of ultradian rhythms in avian behavior

The fractal organization of ultradian rhythms in avian behavior

Abstract Living systems exhibit non-randomly organized biochemical, physiological, and behavioral processes that follow distinctive patterns. In particular, animal behavior displays both fractal dynamics and periodic rhythms yet the relationship between these two dynamic regimens remain unexplored....

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Autores principales: Diego A. Guzmán, Ana G. Flesia, Miguel A. Aon, Stefania Pellegrini, Raúl H. Marin, Jackelyn M. Kembro
Formato: article
Lenguaje:EN
Publicado: Nature Portfolio 2017
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Science
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Acceso en línea:https://doaj.org/article/1d8e1d7fc6864dd8921b33908c745a2f
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spelling oai:doaj.org-article:1d8e1d7fc6864dd8921b33908c745a2f2021-12-02T12:32:31ZThe fractal organization of ultradian rhythms in avian behavior10.1038/s41598-017-00743-22045-2322https://doaj.org/article/1d8e1d7fc6864dd8921b33908c745a2f2017-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-00743-2https://doaj.org/toc/2045-2322Abstract Living systems exhibit non-randomly organized biochemical, physiological, and behavioral processes that follow distinctive patterns. In particular, animal behavior displays both fractal dynamics and periodic rhythms yet the relationship between these two dynamic regimens remain unexplored. Herein we studied locomotor time series of visually isolated Japanese quails sampled every 0.5 s during 6.5 days (>106 data points). These high-resolution, week-long, time series enabled simultaneous evaluation of ultradian rhythms as well as fractal organization according to six different analytical methods that included Power Spectrum, Enright, Empirical Mode Decomposition, Wavelet, and Detrended Fluctuation analyses. Time series analyses showed that all birds exhibit circadian rhythms. Although interindividual differences were detected, animals presented ultradian behavioral rhythms of 12, 8, 6, 4.8, 4 h and/or lower and, irrespective of visual isolation, synchronization between these ultradian rhythms was observed. Moreover, all birds presented similar overall fractal dynamics (for scales ∼30 s to >4.4 h). This is the first demonstration that avian behavior presents fractal organization that predominates at shorter time scales and coexists with synchronized ultradian rhythms. This chronobiological pattern is advantageous for keeping the organism’s endogenous rhythms in phase with internal and environmental periodicities, notably the feeding, light-dark and sleep-wake cycles.Diego A. GuzmánAna G. FlesiaMiguel A. AonStefania PellegriniRaúl H. MarinJackelyn M. KembroNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-13 (2017)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Diego A. Guzmán
Ana G. Flesia
Miguel A. Aon
Stefania Pellegrini
Raúl H. Marin
Jackelyn M. Kembro
The fractal organization of ultradian rhythms in avian behavior
description Abstract Living systems exhibit non-randomly organized biochemical, physiological, and behavioral processes that follow distinctive patterns. In particular, animal behavior displays both fractal dynamics and periodic rhythms yet the relationship between these two dynamic regimens remain unexplored. Herein we studied locomotor time series of visually isolated Japanese quails sampled every 0.5 s during 6.5 days (>106 data points). These high-resolution, week-long, time series enabled simultaneous evaluation of ultradian rhythms as well as fractal organization according to six different analytical methods that included Power Spectrum, Enright, Empirical Mode Decomposition, Wavelet, and Detrended Fluctuation analyses. Time series analyses showed that all birds exhibit circadian rhythms. Although interindividual differences were detected, animals presented ultradian behavioral rhythms of 12, 8, 6, 4.8, 4 h and/or lower and, irrespective of visual isolation, synchronization between these ultradian rhythms was observed. Moreover, all birds presented similar overall fractal dynamics (for scales ∼30 s to >4.4 h). This is the first demonstration that avian behavior presents fractal organization that predominates at shorter time scales and coexists with synchronized ultradian rhythms. This chronobiological pattern is advantageous for keeping the organism’s endogenous rhythms in phase with internal and environmental periodicities, notably the feeding, light-dark and sleep-wake cycles.
format article
author Diego A. Guzmán
Ana G. Flesia
Miguel A. Aon
Stefania Pellegrini
Raúl H. Marin
Jackelyn M. Kembro
author_facet Diego A. Guzmán
Ana G. Flesia
Miguel A. Aon
Stefania Pellegrini
Raúl H. Marin
Jackelyn M. Kembro
author_sort Diego A. Guzmán
title The fractal organization of ultradian rhythms in avian behavior
title_short The fractal organization of ultradian rhythms in avian behavior
title_full The fractal organization of ultradian rhythms in avian behavior
title_fullStr The fractal organization of ultradian rhythms in avian behavior
title_full_unstemmed The fractal organization of ultradian rhythms in avian behavior
title_sort fractal organization of ultradian rhythms in avian behavior
publisher Nature Portfolio
publishDate 2017
url https://doaj.org/article/1d8e1d7fc6864dd8921b33908c745a2f
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