Document Detail

The role of the frontal ganglion in locust feeding and moulting related behaviours.
MedLine Citation:
PMID:  12177148     Owner:  NLM     Status:  MEDLINE    
In the desert locust, Schistocerca gregaria, the frontal ganglion (FG) plays a key role in control of foregut movements, and constitutes a source of innervation to the foregut dilator muscles. In this work we studied the generation and characteristics of FG motor outputs in two distinct and fundamental behaviours: feeding and moulting. The FG motor pattern was found to be complex, and strongly dependent on the locust's physiological and behavioural state. Rhythmic activity of the foregut was dependent on the amount of food present in the crop; animals with food in their crop demonstrated higher FG burst frequency than those with empty crop. A very full gut inhibited the FG rhythm altogether. When no feeding-related foregut pattern was observed, the FG motor output was strongly correlated with the locust's ventilation pattern. This ventilation-related rhythm was dominant in pre-moulting locusts. During the moult, synchronization with the ventilation pattern can be transiently switched off, revealing the endogenous (feeding-related) FG pattern. This presumably happens during vigorous air swallowing, and could also be induced experimentally. Our findings suggest that the FG central pattern generator can be modulated to generate a variety of motor outputs under different physiological conditions and behavioural contexts.
Yael Zilberstein; Amir Ayali
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Journal of experimental biology     Volume:  205     ISSN:  0022-0949     ISO Abbreviation:  J. Exp. Biol.     Publication Date:  2002 Sep 
Date Detail:
Created Date:  2002-08-14     Completed Date:  2003-03-31     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0243705     Medline TA:  J Exp Biol     Country:  England    
Other Details:
Languages:  eng     Pagination:  2833-41     Citation Subset:  IM    
Department of Zoology, Faculty of Life Sciences, Tel Aviv University, Israel.
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MeSH Terms
Animal Feed
Digestive System / innervation
Feeding Behavior / physiology*
Ganglia, Invertebrate / growth & development,  physiology*
Grasshoppers / physiology*
Molting / physiology*
Motor Neurons / physiology
Respiratory Mechanics

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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