Academic Journal
The Jellyfish Cassiopea Exhibits a Sleep-like State
| العنوان: | The Jellyfish Cassiopea Exhibits a Sleep-like State |
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| المؤلفون: | Nath, Ravi D., Bedbrook, Claire N., Abrams, Michael J., Basinger, Ty, Bois, Justin S., Prober, David A., Sternberg, Paul W., Gradinaru, Viviana, Goentoro, Lea |
| المصدر: | Current Biology, 27(19), 2984-2990, (2017-10-09) |
| بيانات النشر: | Cell Press |
| سنة النشر: | 2017 |
| المجموعة: | Caltech Authors (California Institute of Technology) |
| مصطلحات موضوعية: | evolution of sleep, sleep, Cnidaria, jellyfish, Cassiopea |
| الوصف: | Do all animals sleep? Sleep has been observed in many vertebrates, and there is a growing body of evidence for sleep-like states in arthropods and nematodes. Here we show that sleep is also present in Cnidaria, an earlier-branching metazoan lineage. Cnidaria and Ctenophora are the first metazoan phyla to evolve tissue-level organization and differentiated cell types, such as neurons and muscle. In Cnidaria, neurons are organized into a non-centralized radially symmetric nerve net that nevertheless shares fundamental properties with the vertebrate nervous system: action potentials, synaptic transmission, neuropeptides, and neurotransmitters . It was reported that cnidarian soft corals and box jellyfish exhibit periods of quiescence, a pre-requisite for sleep-like states, prompting us to ask whether sleep is present in Cnidaria. Within Cnidaria, the upside-down jellyfish Cassiopea spp. displays a quantifiable pulsing behavior, allowing us to perform long-term behavioral tracking. Monitoring of Cassiopea pulsing activity for consecutive days and nights revealed behavioral quiescence at night that is rapidly reversible, as well as a delayed response to stimulation in the quiescent state. When deprived of nighttime quiescence, Cassiopea exhibited decreased activity and reduced responsiveness to a sensory stimulus during the subsequent day, consistent with homeostatic regulation of the quiescent state. Together, these results indicate that Cassiopea has a sleep-like state, supporting the hypothesis that sleep arose early in the metazoan lineage, prior to the emergence of a centralized nervous system. ; © 2017 Elsevier. Received 30 April 2017, Revised 17 July 2017, Accepted 4 August 2017, Available online 21 September 2017. Published: September 21, 2017. We thank Chris Blair from the National Aquarium, MD; Monica Medina and Aki Ohdera from Pennsylvania State University, PA; and Wyatt Patry from the Monterey Bay Aquarium, CA, for generously supplying Cassiopea medusa and polyps and Dr. John Bedbrook for critical ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | unknown |
| Relation: | https://github.com/GradinaruLab/Jellyfish; https://doi.org/10.1016/j.cub.2017.08.014; https://www.ncbi.nlm.nih.gov/pmc/PMC5653286; eprintid:81662 |
| DOI: | 10.1016/j.cub.2017.08.014 |
| الاتاحة: | https://doi.org/10.1016/j.cub.2017.08.014 https://www.ncbi.nlm.nih.gov/pmc/PMC5653286 |
| Rights: | info:eu-repo/semantics/openAccess ; Other |
| رقم الانضمام: | edsbas.DCD4F507 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1016/j.cub.2017.08.014 |
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