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Urban noise restricts, fragments, and lightens sleep in Australian magpies.
Journal article

Urban noise restricts, fragments, and lightens sleep in Australian magpies.

  • Connelly F School of BioSciences, The University of Melbourne, Melbourne, Victoria, 3010, Australia; School of Life Sciences, La Trobe University, Melbourne, Victoria, 3086, Australia. Electronic address: cfarley.connelly@gmail.com.
  • Johnsson RD School of Life Sciences, La Trobe University, Melbourne, Victoria, 3086, Australia.
  • Aulsebrook AE School of BioSciences, The University of Melbourne, Melbourne, Victoria, 3010, Australia; School of Life Sciences, La Trobe University, Melbourne, Victoria, 3086, Australia.
  • Mulder RA School of BioSciences, The University of Melbourne, Melbourne, Victoria, 3010, Australia.
  • Hall ML School of BioSciences, The University of Melbourne, Melbourne, Victoria, 3010, Australia; Bush Heritage Australia, Melbourne, Victoria, 3000, Australia; School of Biological Sciences, The University of Western Australia, Perth, Western Australia, 6009, Australia.
  • Vyssotski AL Institute of Neuroinformatics, University of Zurich and ETH Zurich, Zurich, 8006, Switzerland.
  • Lesku JA School of Life Sciences, La Trobe University, Melbourne, Victoria, 3086, Australia; Research Centre for Future Landscapes, La Trobe University, Melbourne, Victoria, 3086, Australia.
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  • 2020-09-04
Published in:
  • Environmental pollution (Barking, Essex : 1987). - 2020
Anthropogenic noise
Electroencephalogram
Pollution
REM sleep
Sleep homeostasis
Slow wave sleep
Australia
Noise
Sleep
Sleep, REM
Wakefulness
English Urban areas are inherently noisy, and this noise can disrupt biological processes as diverse as communication, migration, and reproduction. We investigated how exposure to urban noise affects sleep, a process critical to optimal biological functioning, in Australian magpies (Cracticus tibicen). Eight magpies experimentally exposed to noise in captivity for 24-h spent more time awake, and less time in non-rapid eye movement (non-REM) and REM sleep at night than under quiet conditions. Sleep was also fragmented, with more frequent interruptions by wakefulness, shorter sleep episode durations, and less intense non-REM sleep. REM sleep was particularly sensitive to urban noise. Following exposure to noise, magpies recovered lost sleep by engaging in more, and more intense, non-REM sleep. In contrast, REM sleep showed no rebound. This might indicate a long-term cost to REM sleep loss mediated by noise, or contest hypotheses regarding the functional value of this state. Overall, urban noise has extensive, disruptive impacts on sleep composition, architecture, and intensity in magpies. Future work should consider whether noise-induced sleep restriction and fragmentation have long-term consequences.
Language
  • English
Open access status
closed
Identifiers
Persistent URL
https://sonar.ch/global/documents/185336
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