Document Detail

Oviposition preference for and positional avoidance of acetic acid provide a model for competing behavioral drives in Drosophila.
MedLine Citation:
PMID:  19541615     Owner:  NLM     Status:  MEDLINE    
Selection of appropriate oviposition sites is essential for progeny survival and fitness in generalist insect species, such as Drosophila melanogaster, yet little is known about the mechanisms regulating how environmental conditions and innate adult preferences are evaluated and balanced to yield the final substrate choice for egg-deposition. Female D. melanogaster are attracted to food containing acetic acid (AA) as an oviposition substrate. However, our observations reveal that this egg-laying preference is a complex process, as it directly opposes an otherwise strong, default behavior of positional avoidance for the same food. We show that 2 distinct sensory modalities detect AA. Attraction to AA-containing food for the purpose of egg-laying relies on the gustatory system, while positional repulsion depends primarily on the olfactory system. Similarly, distinct central brain regions are involved in AA attraction and repulsion. Given this unique situation, in which a single environmental stimulus yields 2 opposing behavioral outputs, we propose that the interaction of egg-laying attraction and positional aversion for AA provides a powerful model for studying how organisms balance competing behavioral drives and integrate signals involved in choice-like processes.
Ryan M Joseph; Anita V Devineni; Ian F G King; Ulrike Heberlein
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2009-06-18
Journal Detail:
Title:  Proceedings of the National Academy of Sciences of the United States of America     Volume:  106     ISSN:  1091-6490     ISO Abbreviation:  Proc. Natl. Acad. Sci. U.S.A.     Publication Date:  2009 Jul 
Date Detail:
Created Date:  2009-07-08     Completed Date:  2009-07-27     Revised Date:  2013-06-02    
Medline Journal Info:
Nlm Unique ID:  7505876     Medline TA:  Proc Natl Acad Sci U S A     Country:  United States    
Other Details:
Languages:  eng     Pagination:  11352-7     Citation Subset:  IM    
Program in Biological Sciences, University of California, San Francisco, CA 94143-2822, USA.
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MeSH Terms
Acetic Acid / pharmacology*
Animal Feed
Avoidance Learning / drug effects*
Brain / drug effects,  metabolism
Drosophila melanogaster / drug effects*,  physiology*
Hydrogen-Ion Concentration / drug effects
Models, Biological*
Neurons / drug effects,  metabolism
Olfactory Pathways / drug effects
Oviposition / drug effects*
Sexual Behavior, Animal / drug effects*
Taste / drug effects
Reg. No./Substance:
64-19-7/Acetic Acid

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

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