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Ecological and social pressures interfere with homeostatic sleep regulation in the wild

Sleep is fundamental to the health and fitness of all animals. The physiological importance of sleep is underscored by the central role of homeostasis in determining sleep investment – following periods of sleep deprivation, individuals experience longer and more intense sleep bouts. Yet, most sleep...

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Autores principales: Loftus, J Carter, Harel, Roi, Núñez, Chase L, Crofoot, Margaret C
Formato: Online Artículo Texto
Lenguaje:English
Publicado: eLife Sciences Publications, Ltd 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8887896/
https://www.ncbi.nlm.nih.gov/pubmed/35229719
http://dx.doi.org/10.7554/eLife.73695
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author Loftus, J Carter
Harel, Roi
Núñez, Chase L
Crofoot, Margaret C
author_facet Loftus, J Carter
Harel, Roi
Núñez, Chase L
Crofoot, Margaret C
author_sort Loftus, J Carter
collection PubMed
description Sleep is fundamental to the health and fitness of all animals. The physiological importance of sleep is underscored by the central role of homeostasis in determining sleep investment – following periods of sleep deprivation, individuals experience longer and more intense sleep bouts. Yet, most sleep research has been conducted in highly controlled settings, removed from evolutionarily relevant contexts that may hinder the maintenance of sleep homeostasis. Using triaxial accelerometry and GPS to track the sleep patterns of a group of wild baboons (Papio anubis), we found that ecological and social pressures indeed interfere with homeostatic sleep regulation. Baboons sacrificed time spent sleeping when in less familiar locations and when sleeping in proximity to more group-mates, regardless of how long they had slept the prior night or how much they had physically exerted themselves the preceding day. Further, they did not appear to compensate for lost sleep via more intense sleep bouts. We found that the collective dynamics characteristic of social animal groups persist into the sleep period, as baboons exhibited synchronized patterns of waking throughout the night, particularly with nearby group-mates. Thus, for animals whose fitness depends critically on avoiding predation and developing social relationships, maintaining sleep homeostasis may be only secondary to remaining vigilant when sleeping in risky habitats and interacting with group-mates during the night. Our results highlight the importance of studying sleep in ecologically relevant contexts, where the adaptive function of sleep patterns directly reflects the complex trade-offs that have guided its evolution.
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spelling pubmed-88878962022-03-02 Ecological and social pressures interfere with homeostatic sleep regulation in the wild Loftus, J Carter Harel, Roi Núñez, Chase L Crofoot, Margaret C eLife Ecology Sleep is fundamental to the health and fitness of all animals. The physiological importance of sleep is underscored by the central role of homeostasis in determining sleep investment – following periods of sleep deprivation, individuals experience longer and more intense sleep bouts. Yet, most sleep research has been conducted in highly controlled settings, removed from evolutionarily relevant contexts that may hinder the maintenance of sleep homeostasis. Using triaxial accelerometry and GPS to track the sleep patterns of a group of wild baboons (Papio anubis), we found that ecological and social pressures indeed interfere with homeostatic sleep regulation. Baboons sacrificed time spent sleeping when in less familiar locations and when sleeping in proximity to more group-mates, regardless of how long they had slept the prior night or how much they had physically exerted themselves the preceding day. Further, they did not appear to compensate for lost sleep via more intense sleep bouts. We found that the collective dynamics characteristic of social animal groups persist into the sleep period, as baboons exhibited synchronized patterns of waking throughout the night, particularly with nearby group-mates. Thus, for animals whose fitness depends critically on avoiding predation and developing social relationships, maintaining sleep homeostasis may be only secondary to remaining vigilant when sleeping in risky habitats and interacting with group-mates during the night. Our results highlight the importance of studying sleep in ecologically relevant contexts, where the adaptive function of sleep patterns directly reflects the complex trade-offs that have guided its evolution. eLife Sciences Publications, Ltd 2022-03-01 /pmc/articles/PMC8887896/ /pubmed/35229719 http://dx.doi.org/10.7554/eLife.73695 Text en © 2022, Loftus et al https://creativecommons.org/licenses/by/4.0/This article is distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use and redistribution provided that the original author and source are credited.
spellingShingle Ecology
Loftus, J Carter
Harel, Roi
Núñez, Chase L
Crofoot, Margaret C
Ecological and social pressures interfere with homeostatic sleep regulation in the wild
title Ecological and social pressures interfere with homeostatic sleep regulation in the wild
title_full Ecological and social pressures interfere with homeostatic sleep regulation in the wild
title_fullStr Ecological and social pressures interfere with homeostatic sleep regulation in the wild
title_full_unstemmed Ecological and social pressures interfere with homeostatic sleep regulation in the wild
title_short Ecological and social pressures interfere with homeostatic sleep regulation in the wild
title_sort ecological and social pressures interfere with homeostatic sleep regulation in the wild
topic Ecology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8887896/
https://www.ncbi.nlm.nih.gov/pubmed/35229719
http://dx.doi.org/10.7554/eLife.73695
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