Sleeping under the risk of predation

@article{Lima2005SleepingUT,
  title={Sleeping under the risk of predation},
  author={Steven L. Lima and Niels C. Rattenborg and John A. Lesku and Charles J. Amlaner},
  journal={Animal Behaviour},
  year={2005},
  volume={70},
  pages={723-736}
}

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References

SHOWING 1-10 OF 137 REFERENCES
Sleep in Mammals : Ecological and Constitutional Correlates
TLDR
The interrelationships between sleep, ecological, and constitutional variables were assessed statistically for 39 mammalian species and found that both constitutional and ecological influences are important predictors of the amount and type of sleep obtained by mammals.
Facultative control of avian unihemispheric sleep under the risk of predation
Sleep, sleeping sites, and sleep‐related activities: Awakening to their significance
TLDR
Recent progress in the ethology and ecology of sleep in diurnal monkeys and apes is reviewed, with emphasis on safety from predators at sleeping sites, physical comfort, social behavior, and psychophysiology of sleep.
Slow wave sleep in crayfish.
TLDR
It is shown that, in crayfish, a behavioral state with elevated threshold for vibratory stimulation is accompanied by a distinctive form of slow wave electrical activity of the brain, quite different from that during waking rest, and therefore, cray fish can attain a sleep state comparable to that of mammals.
The Phasing of Sleep in Animals
TLDR
To explain the variety of the phasing of sleep is to confront both the reasons for sleep and the principles behind the scheduling of behavior.
A Synthesis of Sleep in Wild Birds
TLDR
This synthesis tries to survey and reanalyse the current literature concerning bird sleep and suggests a model based on eyelid blinking which allows for a degree of vigilance during sleep but which is also compatible with minimizing energy expenditure.
The Evolution of Sleep: A Phylogenetic Approach
TLDR
The electrophysiological hallmarks of mammalian sleep are often used as the ‘‘gold standard’’ for sleep in nonmammals, while sleep in other vertebrate classes has largely been neglected.
Sleep in mammals
PREDATOR VIGILANCE AND GROUP SIZE IN MAMMALS AND BIRDS: A CRITICAL REVIEW OF THE EMPIRICAL EVIDENCE
  • M. Elgar
  • Environmental Science
    Biological reviews of the Cambridge Philosophical Society
  • 1989
TLDR
Most of the studies fail to adequately demonstrate an unambiguous relationship between vigilance behaviour and group size, but many studies reveal interesting features of the relationship between Vigilance and Group size that should provide fruitful avenues for future research.
Strategies used by bonnet macaques (Macaca radiata) to reduce predation risk while sleeping
TLDR
The results indicate that bonnet macaques adopted a suite of behaviors that reduced their risk of being preyed upon at night by selecting sleeping sites that minimized predator encounters and by selecting the safest locations within the canopy.
...
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