ArticleScientific reports2019
Environment shapes sleep patterns in a wild nocturnal primate.
Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.
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Who cites it
19 citing papers in PubMed, 84 citations in OpenAlex.
- Elevating sleep to a global health priority: The One Sleep Health framework.Cell reports. Medicine · 2026Review
- Individual Mechanical Energy Expenditure Regimens Vary Seasonally with Weather, Sex, Age and Body Condition in a Generalist Carnivore Population: Support for Inter-Individual Tactical Diversity.Animals : an open access journal from MDPI · 2025Article
- Local versus global sleep organization and the quest to determine sleep function.Neurobiology of sleep and circadian rhythms · 2025Article
- Unraveling the Mysteries of Sleep: Exploring Phylogenomic Sleep Signals in the Recently Characterized Archaeal Phylum Lokiarchaeota near Loki's Castle.International journal of molecular sciences · 2024Article
- Temperature cues are integrated in a flexible circadian neuropeptidergic feedback circuit to remodel sleep-wake patterns in flies.PLoS biology · 2024Article
- Promoting Good Nonhuman Primate Welfare outside Regular Working Hours.Animals : an open access journal from MDPI · 2023Review
- Applications of Accelerometers and Other Bio-Logging Devices in Captive and Wild Animals.Animals : an open access journal from MDPI · 2023Article
- Sleep deprivation, sleep fragmentation, and social jet lag increase temperature preference inFrontiers in neuroscience · 2023Article
- Functional genomics analysis reveals the evolutionary adaptation and demographic history of pygmy lorises.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
- Video Validation of Tri-Axial Accelerometer for Monitoring Zoo-HousedAnimals : an open access journal from MDPI · 2022Article
- Re-examining extreme sleep duration in bats: implications for sleep phylogeny, ecology, and function.Sleep · 2022Article
- Ecological and social pressures interfere with homeostatic sleep regulation in the wild.eLife · 2022Article
- Training in the Dark: Using Target Training for Non-Invasive Application and Validation of Accelerometer Devices for an Endangered Primate (Animals : an open access journal from MDPI · 2022Article
- Aspects of tree shrew consolidated sleep structure resemble human sleep.Communications biology · 2021Article
- Sleep Disturbances and Depression Are Co-morbid Conditions: Insights From Animal Models, Especially Non-human Primate Model.Frontiers in psychiatry · 2021Review
- Sleep and ageing: from human studies to rodent models.Current opinion in physiology · 2020Article
- Simplified drug efficacy screening system for sleep-disorder drugs using non-human primates.Heliyon · 2020Article
- Response of Bolivian gray titi monkeys (PeerJ · 2020Article
- Evidence That Homeostatic Sleep Regulation Depends on Ambient Lighting Conditions during Wakefulness.Clocks & sleep · 2019Article
Corrections and comments
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Authors and funding
5 authors at 4 institutions in 4 countries.
Funding
Abstract
Among primates, the suborder Haplorhini is considered to have evolved a consolidated monophasic sleep pattern, with diurnal species requiring a shorter sleep duration than nocturnal species. Only a few primate species have been systematically studied in their natural habitat where environmental variables, including temperature and light, have a major influence on sleep and activity patterns. Here we report the first sleep study on a nocturnal primate performed in the wild. We fitted seven wild Javan slow lorises (Nycticebus javanicus) in West Java, Indonesia with accelerometers that collected activity data, and installed climate loggers in each individual's home range to collect ambient temperature readings (over 321 days in total). All individuals showed a strictly nocturnal pattern of activity and displayed a striking synchronisation of onset and cessation of activity in relation to sunset and sunrise. The longest consolidated rest episodes were typically clustered near the beginning and towards the end of the light period, and this pattern was inversely related to daily fluctuations of the ambient temperature. The striking relationship between daily activity patterns, light levels and temperature suggests a major role of the environment in shaping the daily architecture of waking and sleep. We concluded that well-known phenotypic variability in daily sleep amount and architecture across species may represent an adaptation to changes in the environment. Our data suggest that the consolidated monophasic sleep patterns shaped by environmental pressures observed in slow lorises represent phylogenetic inertia in the evolution of sleep patterns in humans.
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