| Synchronization of wing beat cycle of the desert locust, Schistocerca gregaria, by periodic light flashes. | |
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MedLine Citation:
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PMID: 20131057 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Studies on the generation of rhythmic motor patterns have shown that peripheral sensory input may contribute substantially to the rhythm generating network. A prominent example is the wing beat frequency of desert locusts, which can be entrained to rhythmic mechanosensory input, but also to the frequency of periodic light flashes. To further analyze the entrainment by light, tethered flying locusts were presented with periodic light flashes, while the position of the forewing was filmed. We show that entrainment of wing beat occurs both in the UV and green range of light. Animals maintained a characteristic phase relationship to the light stimulus with the most elevated wing position occurring at the end of the dark phase. Speed and time course of entrainment varied greatly and ranged from the duration of a single wing beat cycle to several seconds. To identify the visual system mediating entrainment, synchronization to UV light was tested after cutting the optic stalks to the optic lobes/compound eyes or the ocellar nerves. The results show that light entrainment of the locust flight pattern is largely and perhaps exclusively mediated via the fast ocellar pathway and may have a role to stabilize flight with respect to the horizon. |
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Authors:
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Fabian Schmeling; Gert Stange; Uwe Homberg |
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Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, Non-P.H.S. Date: 2010-02-04 |
Journal Detail:
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Title: Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology Volume: 196 ISSN: 1432-1351 ISO Abbreviation: J. Comp. Physiol. A Neuroethol. Sens. Neural. Behav. Physiol. Publication Date: 2010 Mar |
Date Detail:
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Created Date: 2010-02-22 Completed Date: 2010-05-12 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101141792 Medline TA: J Comp Physiol A Neuroethol Sens Neural Behav Physiol Country: Germany |
Other Details:
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Languages: eng Pagination: 199-211 Citation Subset: IM |
Affiliation:
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Department of Biology, Animal Physiology, Philipps-University of Marburg, 35032, Marburg, Germany. |
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| MeSH Terms | |
Descriptor/Qualifier:
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Activity Cycles
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physiology* Animals Female Flight, Animal / physiology* Grasshoppers / physiology* Male Movement / physiology* Nerve Compression Syndromes / physiopathology Photic Stimulation / methods Photoperiod* Reaction Time / physiology Time Factors Vision, Ocular / physiology Visual Pathways / physiology Visual Perception / physiology Wing / physiology* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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