Document Detail

Hyperphagia resulting from gut denervation in the sea slug, Pleurobranchaea.
MedLine Citation:
PMID:  3579839     Owner:  NLM     Status:  MEDLINE    
Previous research suggests that gut distension by ingested bulk plays an important role in the regulation of food intake in gastropod molluscs. The present study tested whether the bilateral stomatogastric nerves which innervate the esophagus and crop in Pleurobranchaea form a neural pathway carrying information about gut distension to the central nervous system. The posterior branches of the paired stomatogastric nerves were surgically exposed and sectioned in seven experimental animals while the nerves were simply exposed and not sectioned in seven sham-operated control animals. In three, subsequent, daily feeding sessions, the experimental subjects consumed a greater amount of food in terms of percentage of body weight than the control subjects. The experimental animals also gained a greater percentage of body weight and later were found to contain much more food within their guts. The results support the hypothesis that stretch receptors which innervate the gut and which have axons in the stomatogastric nerves form an important negative feedback pathway for the control of feeding in the sea slug.
R P Croll; T Albuquerque; L Fitzpatrick
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Behavioral and neural biology     Volume:  47     ISSN:  0163-1047     ISO Abbreviation:  Behav. Neural Biol.     Publication Date:  1987 Mar 
Date Detail:
Created Date:  1987-06-05     Completed Date:  1987-06-05     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7905471     Medline TA:  Behav Neural Biol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  212-8     Citation Subset:  IM    
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MeSH Terms
Body Weight
Digestive System / innervation*
Feeding Behavior / physiology*
Mollusca / physiology*
Satiation / physiology

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

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