The development of motor coordination in Drosophila embryos
We used non-invasive muscle imaging to study the onset of motor activity and emergence of coordinated movement in Drosophila embryos. Earliest movements are myogenic, and neurally controlled muscle contractions first appear with the onset of bursting activity 17 hours after egg laying. Initial episo...
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| Hauptverfasser: | , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
26 September 2008
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| In: |
Development
Year: 2008, Jahrgang: 135, Heft: 22, Pages: 3707-3717 |
| ISSN: | 1477-9129 |
| DOI: | 10.1242/dev.026773 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: http://dx.doi.org/10.1242/dev.026773 Verlag, kostenfrei, Volltext: http://dev.biologists.org/content/135/22/3707 
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| Verfasserangaben: | Sarah Crisp, Jan Felix Evers, André Fiala, and Michael Bate |
| Zusammenfassung: | We used non-invasive muscle imaging to study the onset of motor activity and emergence of coordinated movement in Drosophila embryos. Earliest movements are myogenic, and neurally controlled muscle contractions first appear with the onset of bursting activity 17 hours after egg laying. Initial episodes of activity are poorly organised and coordinated crawling sequences only begin to appear after a further hour of bursting. Thus, network performance improves during this first period of activity. The embryo continues to exhibit bursts of crawling-like sequences until shortly before hatching, while other reflexes also mature. Bursting does not begin as a reflex response to sensory input but appears to reflect the onset of spontaneous activity in the motor network. It does not require GABA-mediated transmission, and, by using a light-activated channel to excite the network, we demonstrate activity-dependent depression that may cause burst termination. |
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| Beschreibung: | Gesehen am 15.05.2017 |
| Beschreibung: | Online Resource |
| ISSN: | 1477-9129 |
| DOI: | 10.1242/dev.026773 |