Journal article

Nutritional value–Dependent and nutritional value–Independent effects on Drosophila melanogaster larval behavior

  • Rohwedder, Astrid Department of Biology, University of Fribourg, Switzerland and - Department of Biology, University of Konstanz, Germany
  • Pfitzenmaier, Johanna E. R. Department of Biology, University of Fribourg, Switzerland and - Department of Biology, University of Konstanz, Germany
  • Ramsperger, Noel Department of Biology, University of Konstanz, Germany
  • Apostolopoulou, Anthi A. Department of Biology, University of Fribourg, Switzerland and - Department of Biology, University of Konstanz, Germany
  • Widmann, Annekathrin Department of Biology, University of Fribourg, Switzerland and - Department of Biology, University of Konstanz, Germany
  • Thum, Andreas S. Department of Biology, University of Fribourg, Switzerland and - Department of Biology, University of Konstanz, Germany
Show more…
    13.06.2012
Published in:
  • Chemical Senses. - 2012, vol. 37, no. 8, p. 711-721
English Gustatory stimuli allow an organism not only to orient in its environment toward energy-rich food sources to maintain nutrition but also to avoid unpleasant or even poisonous substrates. For both mammals and insects, sugars—perceived as “sweet”—potentially predict nutritional benefit. Interestingly, even Drosophila adult flies are attracted to most high-potency sweeteners preferred by humans. However, the gustatory information of a sugar may be misleading as some sugars, although perceived as “sweet,” cannot be metabolized. Accordingly, in adult Drosophila, a postingestive system that additionally evaluates the nutritional benefit of an ingested sugar has been shown to exist. By using a set of seven different sugars, which either offer (fructose, sucrose, glucose, maltodextrin, and sorbitol) or lack (xylose and arabinose) nutritional benefit, we show that Drosophila, at the larval stage, can perceive and evaluate sugars based on both nutrition-dependent and -independent qualities. In detail, we find that larval survival and feeding mainly depend on the nutritional value of a particular sugar. In contrast, larval choice behavior and learning are regulated in a more complex way by nutrition value–dependent and nutrition value–independent information. The simplicity of the larval neuronal circuits and their accessibility to genetic manipulation may ultimately allow one to identify the neuronal and molecular basis of the larval sugar perception systems described here behaviorally.
Faculty
Faculté des sciences et de médecine
Department
Département de Biologie
Language
  • English
Classification
Biological sciences
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/302565
Statistics

Document views: 47 File downloads:
  • bjs055.pdf: 15