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Dominant baboons experience more interrupted and less rest at night

Marco Fele, Charlotte Christensen, Anna M. Bracken, M. Justin O’ Riain, Miguel Lurgi Rivera Orcid Logo, Marina Papadopoulou Orcid Logo, Ines Fuertbauer Orcid Logo, Andrew King Orcid Logo

Current Biology

Swansea University Authors: Marco Fele, Miguel Lurgi Rivera Orcid Logo, Marina Papadopoulou Orcid Logo, Ines Fuertbauer Orcid Logo, Andrew King Orcid Logo

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DOI (Published version): 10.1016/j.cub.2025.10.028

Abstract

Sleep is a fundamental biological process.1,2 The amount and quality of sleep individuals get can impact various aspects of human and non-human animal health,1 ultimately affecting fitness.3 For wild animals that sleep in groups, individuals may disturb one another’s sleep,4,5 but this aspect of soc...

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Published in: Current Biology
ISSN: 0960-9822 1879-0445
Published: Elsevier BV 2025
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URI: https://cronfa.swan.ac.uk/Record/cronfa71143
first_indexed 2025-12-15T09:43:48Z
last_indexed 2025-12-15T09:43:48Z
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First, we show that the troop’s nighttime rest (determined by 40 Hz acceleration data) is highly synchronized. Next, we link nighttime rest dynamics to daytime spatial networks and dominance hierarchy (from 1 Hz GPS data and direct observations). We show that baboon nighttime states (activity and rest) are more synchronized between similarly ranked individuals and, unexpectedly, that more dominant baboons experience more interrupted and less nighttime rest than lower-ranked baboons. We propose that this hierarchy effect is explained by higher-ranked baboons resting closer to more group members, which leads them to exert a greater influence on each other’s nighttime behavior compared with lower-ranked individuals. Our study provides the first evidence for the impact of social hierarchies on aspects of sleep in a wild primate, suggesting that dominance status may impose trade-offs between social rank and the quality and quantity of sleep.</abstract><type>Journal Article</type><journal>Current Biology</journal><volume>0</volume><journalNumber/><paginationStart/><paginationEnd/><publisher>Elsevier BV</publisher><placeOfPublication/><isbnPrint/><isbnElectronic/><issnPrint>0960-9822</issnPrint><issnElectronic>1879-0445</issnElectronic><keywords>sleep; rest; dominance rank; collective behavior; synchrony; chacma baboons; accelerometry; biologging; social networks; leadership</keywords><publishedDay>12</publishedDay><publishedMonth>12</publishedMonth><publishedYear>2025</publishedYear><publishedDate>2025-12-12</publishedDate><doi>10.1016/j.cub.2025.10.028</doi><url/><notes>Report</notes><college>COLLEGE NANME</college><CollegeCode>COLLEGE CODE</CollegeCode><institution>Swansea University</institution><apcterm>SU Library paid the OA fee (TA Institutional Deal)</apcterm><funders>M.F. was funded by an Engineering and Physical Sciences Research Council studentship (project reference: 2252927). M.J.O. was supported by NRF incentive funding. A.M.B. and C.C. were supported by College of Science/Swansea University PhD scholarships. M.P. and A.J.K. were supported by an Office for Naval Research (ONR) Global Grant awarded to A.J.K. (number: N629092112030).</funders><projectreference/><lastEdited>2025-12-15T09:43:46.1594148</lastEdited><Created>2025-12-15T09:34:23.3331322</Created><path><level id="1">Faculty of Science and Engineering</level><level id="2">School of Biosciences, Geography and Physics - Biosciences</level></path><authors><author><firstname>Marco</firstname><surname>Fele</surname><order>1</order></author><author><firstname>Charlotte</firstname><surname>Christensen</surname><order>2</order></author><author><firstname>Anna M.</firstname><surname>Bracken</surname><order>3</order></author><author><firstname>M. Justin O’</firstname><surname>Riain</surname><order>4</order></author><author><firstname>Miguel</firstname><surname>Lurgi Rivera</surname><orcid>0000-0001-9891-895X</orcid><order>5</order></author><author><firstname>Marina</firstname><surname>Papadopoulou</surname><orcid>0000-0002-6478-8365</orcid><order>6</order></author><author><firstname>Ines</firstname><surname>Fuertbauer</surname><orcid>0000-0003-1404-6280</orcid><order>7</order></author><author><firstname>Andrew</firstname><surname>King</surname><orcid>0000-0002-6870-9767</orcid><order>8</order></author></authors><documents/><OutputDurs/></rfc1807>
spelling v2 71143 2025-12-15 Dominant baboons experience more interrupted and less rest at night aba314e98ec5222d20e06820901887d6 Marco Fele Marco Fele true false 947df89d116a1ab75515e421089e0443 0000-0001-9891-895X Miguel Lurgi Rivera Miguel Lurgi Rivera true false a2fe90e37bd6b78c6fdb9e640057c0ea 0000-0002-6478-8365 Marina Papadopoulou Marina Papadopoulou true false f682ec95fa97c4fabb57dc098a9fdaaa 0000-0003-1404-6280 Ines Fuertbauer Ines Fuertbauer true false cc115b4bc4672840f960acc1cb078642 0000-0002-6870-9767 Andrew King Andrew King true false 2025-12-15 Sleep is a fundamental biological process.1,2 The amount and quality of sleep individuals get can impact various aspects of human and non-human animal health,1 ultimately affecting fitness.3 For wild animals that sleep in groups, individuals may disturb one another’s sleep,4,5 but this aspect of social sleep has been understudied due to methodological challenges.6,7,8 Here, using nighttime rest (absence of bodily movements) as a proxy for sleep, we test the hypothesis that an individual's social dominance affects nighttime rest in a troop of wild, highly hierarchical8,9 chacma baboons (Papio ursinus). First, we show that the troop’s nighttime rest (determined by 40 Hz acceleration data) is highly synchronized. Next, we link nighttime rest dynamics to daytime spatial networks and dominance hierarchy (from 1 Hz GPS data and direct observations). We show that baboon nighttime states (activity and rest) are more synchronized between similarly ranked individuals and, unexpectedly, that more dominant baboons experience more interrupted and less nighttime rest than lower-ranked baboons. We propose that this hierarchy effect is explained by higher-ranked baboons resting closer to more group members, which leads them to exert a greater influence on each other’s nighttime behavior compared with lower-ranked individuals. Our study provides the first evidence for the impact of social hierarchies on aspects of sleep in a wild primate, suggesting that dominance status may impose trade-offs between social rank and the quality and quantity of sleep. Journal Article Current Biology 0 Elsevier BV 0960-9822 1879-0445 sleep; rest; dominance rank; collective behavior; synchrony; chacma baboons; accelerometry; biologging; social networks; leadership 12 12 2025 2025-12-12 10.1016/j.cub.2025.10.028 Report COLLEGE NANME COLLEGE CODE Swansea University SU Library paid the OA fee (TA Institutional Deal) M.F. was funded by an Engineering and Physical Sciences Research Council studentship (project reference: 2252927). M.J.O. was supported by NRF incentive funding. A.M.B. and C.C. were supported by College of Science/Swansea University PhD scholarships. M.P. and A.J.K. were supported by an Office for Naval Research (ONR) Global Grant awarded to A.J.K. (number: N629092112030). 2025-12-15T09:43:46.1594148 2025-12-15T09:34:23.3331322 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences Marco Fele 1 Charlotte Christensen 2 Anna M. Bracken 3 M. Justin O’ Riain 4 Miguel Lurgi Rivera 0000-0001-9891-895X 5 Marina Papadopoulou 0000-0002-6478-8365 6 Ines Fuertbauer 0000-0003-1404-6280 7 Andrew King 0000-0002-6870-9767 8
title Dominant baboons experience more interrupted and less rest at night
spellingShingle Dominant baboons experience more interrupted and less rest at night
Marco Fele
Miguel Lurgi Rivera
Marina Papadopoulou
Ines Fuertbauer
Andrew King
title_short Dominant baboons experience more interrupted and less rest at night
title_full Dominant baboons experience more interrupted and less rest at night
title_fullStr Dominant baboons experience more interrupted and less rest at night
title_full_unstemmed Dominant baboons experience more interrupted and less rest at night
title_sort Dominant baboons experience more interrupted and less rest at night
author_id_str_mv aba314e98ec5222d20e06820901887d6
947df89d116a1ab75515e421089e0443
a2fe90e37bd6b78c6fdb9e640057c0ea
f682ec95fa97c4fabb57dc098a9fdaaa
cc115b4bc4672840f960acc1cb078642
author_id_fullname_str_mv aba314e98ec5222d20e06820901887d6_***_Marco Fele
947df89d116a1ab75515e421089e0443_***_Miguel Lurgi Rivera
a2fe90e37bd6b78c6fdb9e640057c0ea_***_Marina Papadopoulou
f682ec95fa97c4fabb57dc098a9fdaaa_***_Ines Fuertbauer
cc115b4bc4672840f960acc1cb078642_***_Andrew King
author Marco Fele
Miguel Lurgi Rivera
Marina Papadopoulou
Ines Fuertbauer
Andrew King
author2 Marco Fele
Charlotte Christensen
Anna M. Bracken
M. Justin O’ Riain
Miguel Lurgi Rivera
Marina Papadopoulou
Ines Fuertbauer
Andrew King
format Journal article
container_title Current Biology
container_volume 0
publishDate 2025
institution Swansea University
issn 0960-9822
1879-0445
doi_str_mv 10.1016/j.cub.2025.10.028
publisher Elsevier BV
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Biosciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Biosciences
document_store_str 0
active_str 0
description Sleep is a fundamental biological process.1,2 The amount and quality of sleep individuals get can impact various aspects of human and non-human animal health,1 ultimately affecting fitness.3 For wild animals that sleep in groups, individuals may disturb one another’s sleep,4,5 but this aspect of social sleep has been understudied due to methodological challenges.6,7,8 Here, using nighttime rest (absence of bodily movements) as a proxy for sleep, we test the hypothesis that an individual's social dominance affects nighttime rest in a troop of wild, highly hierarchical8,9 chacma baboons (Papio ursinus). First, we show that the troop’s nighttime rest (determined by 40 Hz acceleration data) is highly synchronized. Next, we link nighttime rest dynamics to daytime spatial networks and dominance hierarchy (from 1 Hz GPS data and direct observations). We show that baboon nighttime states (activity and rest) are more synchronized between similarly ranked individuals and, unexpectedly, that more dominant baboons experience more interrupted and less nighttime rest than lower-ranked baboons. We propose that this hierarchy effect is explained by higher-ranked baboons resting closer to more group members, which leads them to exert a greater influence on each other’s nighttime behavior compared with lower-ranked individuals. Our study provides the first evidence for the impact of social hierarchies on aspects of sleep in a wild primate, suggesting that dominance status may impose trade-offs between social rank and the quality and quantity of sleep.
published_date 2025-12-12T09:43:48Z
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