Document Detail

Rapid adaptation to food availability by a dopamine-mediated morphogenetic response.
MedLine Citation:
PMID:  22186888     Owner:  NLM     Status:  In-Data-Review    
Food can act as a powerful stimulus, eliciting metabolic, behavioural and developmental responses. These phenotypic changes can alter ecological and evolutionary processes; yet, the molecular mechanisms underlying many plastic phenotypic responses remain unknown. Here we show that dopamine signalling through a type-D(2) receptor mediates developmental plasticity by regulating arm length in pre-feeding sea urchin larvae in response to food availability. Although prey-induced traits are often thought to improve food acquisition, the mechanism underlying this plastic response acts to reduce feeding structure size and subsequent feeding rate. Consequently, the developmental programme and/or maternal provisioning predetermine the maximum possible feeding rate, and food-induced dopamine signalling reduces food acquisition potential during periods of abundant resources to preserve maternal energetic reserves. Sea urchin larvae may have co-opted the widespread use of food-induced dopamine signalling from behavioural responses to instead alter their development.
Diane K Adams; Mary A Sewell; Robert C Angerer; Lynne M Angerer
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Publication Detail:
Type:  Journal Article     Date:  2011-12-20
Journal Detail:
Title:  Nature communications     Volume:  2     ISSN:  2041-1723     ISO Abbreviation:  Nat Commun     Publication Date:  2011  
Date Detail:
Created Date:  2011-12-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101528555     Medline TA:  Nat Commun     Country:  England    
Other Details:
Languages:  eng     Pagination:  592     Citation Subset:  IM    
National Institute of Dental and Craniofacial Research, National Institutes of Health, 30 Convent Drive, Building 30 Room 523, Bethesda, Maryland 20892 USA.
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