Caste-dependent sleep of worker honey bees

Klein, Barrett Anthony; Olzsowy, Kathryn M.; Klein, Arno; Saunders, Katharine M.; Seeley, Thomas D.

doi:10.1242/jeb.017426

Cited by 72 publications

(71 citation statements)

References 40 publications

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“…Together, our findings suggest that the social signals that influence sleep include volatile pheromones, sounds, comb vibrations or other environmental variables that are associated with the activity or behavior of other bees in the colony. Our findings confirm and extend previous evidence for an agerelated decrease in honey bee sleep (Eban-Rothschild and Bloch, 2008;Klein et al, 2008;. Young bees slept more than their older sister foragers when the two groups of bees were transferred from the same colony to individual cages in the same lab environment.…”

Section: Research Articlesupporting

confidence: 89%

“…2B, repeated measures one-way ANOVA, d.f.=3, F colony S73 =23.78; F colony H1 =17.98; F colony H14 =37.03). These findings that are based on locomotor activity data are consistent with detailed behavioral observations of sleeping honey bee foragers (Eban-Rothschild and Bloch, 2008;Kaiser, 1988;Klein et al, 2008).…”

Section: Introductionsupporting

confidence: 81%

“…From 3 weeks of adult life, honey bee workers typically forage for pollen and nectar outside the hive (Robinson, 1992;Winston, 1987). The sleep behavior of honey bees has been studied both in the natural context of the colony (Kaiser, 1988;Klein and Seeley, 2011;Klein et al, 2008;Klein et al, 2010) and in detailed laboratory studies (Eban-Rothschild and Bloch, 2008;Kaiser, 1988;Sauer et al, 2003). Honey bees exhibit all three behavioral characteristics of sleep: a period of quiescence (Eban-Rothschild and Bloch, 2008;Kaiser, 1988;Sauer et al, 2003;Sauer et al, 2004), an increased response threshold (Eban-Rothschild and Bloch, 2008; Kaiser, 1988;Kaiser and Steiner-Kaiser, 1983) and a homeostatic regulation mechanism (Klein et al, 2010;Sauer et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

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The colony environment modulates sleep in honey bee workers

Eban-Rothschild

Bloch

2014

Journal of Experimental Biology

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One of the most important and evolutionarily conserved roles of sleep is the processing and consolidation of information acquired during wakefulness. In both insects and mammals, environmental and social stimuli can modify sleep physiology and behavior, yet relatively little is known about the specifics of the wake experiences and their relative contribution to experience-dependent modulation of sleep. Honey bees provide an excellent model system in this regard because their behavioral repertoire is well characterized and the environment they experience during the day can be manipulated while keeping an ecologically and sociobiologically relevant context. We examined whether social experience modulates sleep in honey bees, and evaluated the relative contribution of different social signals. We exposed newly emerged bees to different components of their natural social environment and then monitored their sleep behavior in individual cages in a constant lab environment. We found that rich waking experience modulates subsequent sleep. Bees that experienced the colony environment for 1 or 2 days slept more than same-age sister bees that were caged individually or in small groups in the lab. Furthermore, bees placed in mesh-enclosures in the colony, that prevented direct contact with nestmates, slept similarly to bees freely moving in the colony. These results suggest that social signals that do not require direct or close distance interactions between bees are sufficiently rich to encompass almost the entire effect of the colony on sleep. Our findings provide a remarkable example of social experience-dependent modulation of an essential biological process.

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Section: Research Articlesupporting

confidence: 89%

Section: Introductionsupporting

confidence: 81%

Section: Introductionmentioning

confidence: 99%

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The colony environment modulates sleep in honey bee workers

Eban-Rothschild

Bloch

2014

Journal of Experimental Biology

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“…Inactive foragers have long been thought to enter into sleep-like states (von Frisch, 1967;Kaiser and Steiner-Kaiser, 1983;Kaiser, 1988;Eban-Rothschild and Bloch, 2008;Klein et al, 2008); this speculation is strengthened by work in Drosophila rigorously demonstrating that insects sleep (Hendricks et al, 2000;Shaw et al, 2000) (reviewed by Harbison et al, 2009). Perhaps inactive bees are showing evidence for the kind of purging of old proteins and building of new proteins that has been associated with sleep in other organisms (reviewed by Mackiewicz et al, 2008).…”

Section: Discussionmentioning

confidence: 99%

Neurogenomic signatures of spatiotemporal memories in time-trained forager honey bees

Naeger

Nest

Johnson

et al. 2011

Journal of Experimental Biology

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SUMMARYHoney bees can form distinct spatiotemporal memories that allow them to return repeatedly to different food sources at different times of day. Although it is becoming increasingly clear that different behavioral states are associated with different profiles of brain gene expression, it is not known whether this relationship extends to states that are as dynamic and specific as those associated with foraging-related spatiotemporal memories. We tested this hypothesis by training different groups of foragers from the same colony to collect sucrose solution from one of two artificial feeders; each feeder was in a different location and had sucrose available at a different time, either in the morning or afternoon. Bees from both training groups were collected at both the morning and afternoon training times to result in one set of bees that was undergoing stereotypical food anticipatory behavior and another that was inactive for each time of day. Between the two groups with the different spatiotemporal memories, microarray analysis revealed that 1329 genes were differentially expressed in the brains of honey bees. Many of these genes also varied with time of day, time of training or state of food anticipation. Some of these genes are known to be involved in a variety of biological processes, including metabolism and behavior. These results indicate that distinct spatiotemporal foraging memories in honey bees are associated with distinct neurogenomic signatures, and the decomposition of these signatures into sets of genes that are also influenced by time or activity state hints at the modular composition of this complex neurogenomic phenotype. Supplementary material available online at

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“…There is much more known about Drosophila sleep now than in any other insect because of its genetic tractability. Studies in honeybees have shown that these insects sleep like other diurnal insects both inside of the hives (Kaiser 1988;EbanRothschild and Bloch 2008;Klein et al 2008) and under laboratory conditions (Sauer et al 2003), and that their sleep is controlled by the interaction of a circadian clock and a sleep homeostat. Like in mammals, sleep-deprived bees sleep longer the following night, a phenomenon called ''sleep rebound.''…”

mentioning

confidence: 99%

Sleep deprivation affects extinction but not acquisition memory in honeybees

Bogusch¹,

Landgraf²,

Menzel³

2009

Learn. Mem.

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Sleep-like behavior has been studied in honeybees before, but the relationship between sleep and memory formation has not been explored. Here we describe a new approach to address the question if sleep in bees, like in other animals, improves memory consolidation. Restrained bees were observed by a web camera, and their antennal activities were used as indicators of sleep. We found that the bees sleep more during the dark phase of the day compared with the light phase. Sleep phases were characterized by two distinct patterns of antennal activities: symmetrical activity, more prominent during the dark phase; and asymmetrical activity, more common during the light phase. Sleep-deprived bees showed rebound the following day, confirming effective deprivation of sleep. After appetitive conditioning of the bees to various olfactory stimuli, we observed their sleep. Bees conditioned to odor with sugar reward showed lesser sleep compared with bees that were exposed to either reward alone or air alone. Next, we asked whether sleep deprivation affects memory consolidation. While sleep deprivation had no effect on retention scores after odor acquisition, retention for extinction learning was significantly reduced, indicating that consolidation of extinction memory but not acquisition memory was affected by sleep deprivation.

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Caste-dependent sleep of worker honey bees

Cited by 72 publications

References 40 publications

The colony environment modulates sleep in honey bee workers

The colony environment modulates sleep in honey bee workers

Neurogenomic signatures of spatiotemporal memories in time-trained forager honey bees

Sleep deprivation affects extinction but not acquisition memory in honeybees

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