Artificial light at night affects sleep behaviour differently in two closely related songbird species

Sun, Jiachen; Raap, Thomas; Pinxten, Rianne; Eens, Marcel

doi:10.1016/j.envpol.2017.08.098

Cited by 43 publications

(30 citation statements)

References 74 publications

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“…Assuming this to be true, birds woke earlier when exposed to higher intensities of light at night. Subsequent studies used LED lights inside nest boxes to experimentally manipulate light at night, and record the effects on sleep behavior using the same definition (Raap, Pinxten, & Eens, ; ; Raap, Sun, Pinxten, & Eens, ; Sun, Raap, Pinxten, & Eens, ). Interestingly, exposure to light at night decreased the duration of night‐time sleep behavior in great tits, but not blue tits (Sun et al., ), and the effects on female great tits were much greater during the nestling period (Raap, Pinxten, & Eens, ).…”

Section: Sleep Behavior In Wildlifementioning

confidence: 99%

Impacts of artificial light at night on sleep: A review and prospectus

et al. 2018

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Natural cycles of light and darkness govern the timing of most aspects of animal behavior and physiology. Artificial light at night (ALAN)-a recent and pervasive form of pollution-can mask natural photoperiodic cues and interfere with biological rhythms. One such rhythm vulnerable to perturbation is the sleep-wake cycle. ALAN may greatly influence sleep in humans and wildlife, particularly in animals that sleep predominantly at night. There has been some recent evidence for impacts of ALAN on sleep, but critical questions remain. Some of these can be addressed by adopting approaches already entrenched in sleep research. In this paper, we review the current evidence for impacts of ALAN on sleep, highlight gaps in our understanding, and suggest opportunities for future research.

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Section: Sleep Behavior In Wildlifementioning

confidence: 99%

Impacts of artificial light at night on sleep: A review and prospectus

et al. 2018

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“…Effects of light pollution on cavity‐nesting species are potentially not only species dependent (Sun et al., ) but also sex and season may play an important role and interact with each other. Although our study was done during winter when both male and female great tits roost inside cavities and nest boxes, during the breeding season mainly females sleep inside nest boxes (Hinde, ; Kluijver, ).…”

Section: Discussionmentioning

confidence: 99%

“…Experimental ALAN inside a nest box affected nestling physiology (Raap, Casasole, Pinxten, & Eens, ), but ambient light pollution at the nest box was unrelated to nestling physiology (Raap, Pinxten, Casasole, Dehnhard, & Eens, ). Whether ambient light pollution leads to altered sleep behavior of birds inside nest boxes (cavities), similar to what has been found in experiments with ALAN inside a nest box using free‐living blue and great tits (Raap et al., , , ; Sun et al., ), needs to be examined.…”

Section: Introductionmentioning

confidence: 93%

“…Whether ambient light pollution leads to altered sleep behavior of birds inside nest boxes (cavities), similar to what has been found in experiments with ALAN inside a nest box using free-living blue and great tits (Raap et al, 2015(Raap et al, , 2016c(Raap et al, , 2017cSun et al, 2017), needs to be examined.…”

Section: Introductionmentioning

confidence: 98%

“…Light pollution disrupts natural light cycles and potentially poses an important threat for wildlife, biodiversity, and humans (Duffy, Bennie, Duran, & Gaston, 2015;Gaston, Bennie, Davies, & Hopkins, 2013;Hölker, Wolter, Perkin, & Tockner, 2010;Kyba & Hölker, 2013;Navara & Nelson, 2007;Rich & Longcore, 2005), since it results in a wide range of physiological and behavioral responses (see, e.g., Da Silva & Kempenaers, 2017;Dominoni, Quetting, & Partecke, 2013). For example, in two cavitynesting songbird species, blue tits (Cyanistes caeruleus) and great tits (Parus major), sleep behavior was disrupted by experimental light inside the nest box (Raap, Pinxten, & Eens, 2015, 2016cRaap, Sun, Pinxten, & Eens, 2017c;Sun, Raap, Pinxten, & Eens, 2017). Sleep is an important animal behavior with multiple possible functions, enabling animals to recover from daily stress (Siegel, 2009;Weljie et al, 2015), to consolidate memory and to conserve energy (Gobes, Zandbergen, & Bolhuis, 2010; Roth II, Rattenborg, & Pravosudov, 2010;Vorster & Born, 2015).…”

Section: Introductionmentioning

confidence: 99%

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Cavities shield birds from effects of artificial light at night on sleep

2018

Self Cite

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Light pollution is an ever increasing worldwide problem disrupting animal behavior. Artificial light at night (ALAN) has been shown to affect sleep in wild birds. Even cavity-nesting bird species may be affected when sleeping inside their cavity. Correlational studies suggest that light from outside the cavity/nest box, for example from street lights, may affect sleep. We used an experimental design to study to what extent nest boxes shield animals from effects of ALAN on sleep. We recorded individual sleep behavior of free-living great tits (Parus major) that were roosting in dark nest boxes and exposed their nest box entrance to ALAN the following night (1.6 lux white LED light; a similar light intensity as was found at nest boxes near street lights). Their behavior was compared to that of control birds sleeping in dark nest boxes on both nights. Our experimental treatment did not affect sleep behavior. Sleep behavior of birds in the control group did not differ from that of individuals in the light treated group. Our results suggest that during winter cavities shield birds from some effects of ALAN. Furthermore, given that effects of ALAN and exposure to artificial light are species-, sex-, and season-dependent, it is important that studies using wild animals quantify individual exposure to light pollution, and be cautious in the interpretation and generalization of the effects, or lack thereof, from light pollution. Rigorous studies are necessary to examine individual light exposure and its consequences in cavity- and open-nesting birds.

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Sympatrically breeding congeneric seabirds (Stercorarius spp.) from Arctic Canada migrate to four oceans

Harrison

Woodard²,

Rausch³

2021

Ecology and Evolution

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Polar systems of avian migration remain unpredictable. For seabirds nesting in the Nearctic, it is often difficult to predict which of the world's oceans birds will migrate to after breeding. Here, we report on three related seabird species that migrated across four oceans following sympatric breeding at a central Canadian high Arctic nesting location. Using telemetry, we tracked pomarine jaeger (Stercorarius pomarinus, n = 1) across the Arctic Ocean to the western Pacific Ocean; parasitic jaeger (S. parasiticus, n = 4) to the western Atlantic Ocean, and long‐tailed jaeger (S. longicaudus, n = 2) to the eastern Atlantic Ocean and western Indian Ocean. We also report on extensive nomadic movements over ocean during the postbreeding period (19,002 km) and over land and ocean during the prebreeding period (5578 km) by pomarine jaeger, an irruptive species whose full migrations and nomadic behavior have been a mystery. While the small sample sizes in our study limit the ability to make generalizable inferences, our results provide a key input to the knowledge of jaeger migrations. Understanding the routes and migratory divides of birds nesting in the Arctic region has implications for understanding both the glacial refugia of the past and the Anthropocene‐driven changes in the future.

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Artificial light at night affects sleep behaviour differently in two closely related songbird species

Cited by 43 publications

References 74 publications

Impacts of artificial light at night on sleep: A review and prospectus

Impacts of artificial light at night on sleep: A review and prospectus

Cavities shield birds from effects of artificial light at night on sleep

Sympatrically breeding congeneric seabirds (Stercorarius spp.) from Arctic Canada migrate to four oceans

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