Phylogenetics and the correlates of mammalian sleep: A reappraisal

Lesku, John A.; Roth, Timothy C.; Rattenborg, Niels Christian; Amlaner, Charles J.; Lima, Steven L.

doi:10.1016/j.smrv.2007.10.003

Cited by 86 publications

(86 citation statements)

References 78 publications

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“…In other words, prolonged or consolidated sleep is not a vital necessity but intervals of sleep that last only few seconds (20 s in most experiments here presented) may be sufficient to satisfy whatever basic biological need sleep may serve. Behavioural correlates of sleep have been described in virtually every animal that has been studied so far, connecting species as different as jellyfishes and humans (25,46), and have demonstrated that sleep amounts vary dramatically across the animal kingdom. .…”

Section: Discussionmentioning

confidence: 99%

Most sleep does not serve a vital function. Evidence from Drosophila melanogaster

Geissmann

Beckwith

Gilestro

2018

Preprint

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Sleep appears to be a universally conserved phenomenon among the animal kingdom but whether this striking evolutionary conservation underlies a basic vital function is still an open question.Using novel technologies, we conducted an unprecedentedly detailed high-throughput analysis of sleep in the fruit fly Drosophila melanogaster, coupled with a life-long chronic and specific sleep restriction. Our results show that some wild-type flies are virtually sleepless in baseline conditions and that complete, forced sleep restriction is not necessarily a lethal treatment in wild-type Drosophila melanogaster. We also show that circadian drive, and not homeostatic regulation, is the main contributor to sleep pressure in flies. We propose a three-partite model framework of sleep function, according to which, total sleep accounts for three components: a vital component, a useful component, and an accessory component.

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Section: Discussionmentioning

confidence: 99%

Most sleep does not serve a vital function. Evidence from Drosophila melanogaster

Geissmann

Beckwith

Gilestro

2018

Preprint

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“…These include the need for synaptic homeostasis for neuronal plasticity (Lesku et al 2006(Lesku et al , 2008Capellini et al 2008) and energy conservation by enforcing a sustained period of rest and low metabolic rate, which in turn reduce levels of damaging reactive oxygen species (Siegel 2005). Several comparative studies using mammalian sleep and ecological data have highlighted the relationship between sleep architecture and ecological variables, especially foraging strategies and predatory danger (Allison & Cicchetti 1976;Lesku et al 2006Lesku et al , 2008Capellini et al 2008). Animals that spend a large proportion of the day asleep in a stable and benign environment reduce the risks from exposure to hostile features of environments such as predation, but miss opportunities to mate and forage for food.…”

Section: Introductionmentioning

confidence: 99%

Drosophila male sex peptide inhibits siesta sleep and promotes locomotor activity in the post-mated female

et al. 2009

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Quiescence, or a sleep-like state, is a common and important feature of the daily lives of animals from both invertebrate and vertebrate taxa, suggesting that sleep appeared early in animal evolution. Recently, Drosophila melanogaster has been shown to be a relevant and powerful model for the genetic analysis of sleep behaviour. The sleep architecture of D. melanogaster is sexually dimorphic, with females sleeping much less than males during day-time, presumably because reproductive success requires greater foraging activity by the female as well as the search for egg-laying sites. However, this loss of sleep and increase in locomotor activity will heighten the risk for the female from environmental and predator hazards. In this study, we show that virgin females can minimize this risk by behaving like males, with an extended afternoon 'siesta'. Copulation results in the female losing 70 per cent of day-time sleep and becoming more active. This behaviour lasts for at least 8 days after copulation and is abolished if the mating males lack sex peptide (SP), normally present in the seminal fluid. Our results suggest that SP is the molecular switch that promotes wakefulness in the post-mated female, a change of behaviour compatible with increased foraging and egg-laying activity. The stress resulting from SP-dependent sleep deprivation might be an important contribution to the toxic side-effects of male accessory gland products that are known to reduce lifespan in post-mated females.

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“…All these constitutive variables are interrelated and may be a consequence of the same underlying relationship, as noted by Lesku et al 4 Sleep duration can also be understood in terms of energy expenditure. For example, it has been stated that "A platypus may sleep more (fourteen hours), perhaps because a frugal meal of crustaceans is enough to bring him a sufficient dose of calories."…”

Section: Introductionmentioning

confidence: 85%

“…[1][2][3][4][5][6][7][8][9][10][11] In this article, all these published data are carefully reviewed and reinterpreted, and a new hypothesis is proposed. Gestation and corresponding REM sleep durations were collated for 79 mammalian species (Table 1).…”

Section: Methodsmentioning

confidence: 99%

“…Gestation and corresponding REM sleep durations were collated for 79 mammalian species (Table 1). It seems that gestation has not often been compared with sleep amount before and when it has and has never been appreciated as the important parameter, [1][2][3][4] rather other parameters such as weight and lifespan for instance, have been considered in an analysis of REM sleep duration. Data are shown in Table 1, and gestation duration and REM sleep duration are compared subsequently using a correlation method.…”

Section: Methodsmentioning

confidence: 99%

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Negative correlation between gestation and sleep durations in mammals

Gonfalone¹

2016

OAAP

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Many studies of sleep have tempted to establish a relation between environmental, ecological, and physiological variables and sleep duration. This article establishes unambiguously that there is a negative correlation between gestation and sleep durations in mammals. Gestation offers the advantage that one species is characterized by a precise value of its gestation time, with relative small variations, and it is a quantity that can easily be measured. The duration of gestation is a parameter which differs from other parameters that have been used for comparison, such as weight, brain size, and predatory danger. The review of all relevant research articles clearly demonstrates that those mammals, which have longer gestation period, experience less sleep. Within the class of mammals, precocial mammals, capable of moving at birth, show a relatively short amount of rapid eye movement (REM) sleep (a unique phase of mammalian sleep) that does not vary much after birth, while altricial species with a short gestation that are relatively more dependent at birth adjust their amount of REM sleep after birth and show longer sleep duration in-line with the present findings. The essential data on which this result is obtained has been deduced from an extensive and attentive review of previously published articles on mammalian sleep and mammalian gestation, among others. In answering the question "Why does species with a shorter gestation period need more sleep?", many similarities in behavior between the fetal state and REM sleep state have been identified. Even if at birth all sensory organs are fully developed, their functions have not been exercised, and it is proposed that the amount of REM sleep may be the time needed to strengthen adaptation of the senses to the external world and its components, such as light, sound, contact, taste, odors, and particularly cold and gravity. The assumption proposed is that REM sleep is needed to compensate for the short gestation. It is a period for the brain to reorder and rearrange all sensations accumulated during wake and prepare for the following wake period, and that REM sleep is a carry over of the fetal state.

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Phylogenetics and the correlates of mammalian sleep: A reappraisal

Cited by 86 publications

References 78 publications

Most sleep does not serve a vital function. Evidence from Drosophila melanogaster

Most sleep does not serve a vital function. Evidence from Drosophila melanogaster

Drosophila male sex peptide inhibits siesta sleep and promotes locomotor activity in the post-mated female

Negative correlation between gestation and sleep durations in mammals

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