Related Experiment Video
Updated: May 7, 2026
06:13
Solid Plate-based Dietary Restriction in Caenorhabditis elegans
Published on: May 28, 2011
Density dependence in Caenorhabditis larval starvation
Alexander B Artyukhin1, Frank C Schroeder, Leon Avery
11] Boyce Thompson Institute and Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14850, USA [2] Department of Physiology and Biophysics, Virginia Commonwealth University, Richmond, VA 23298, USA.
Scientific Reports
|September 28, 2013
Summary
Some Caenorhabditis species, including C. elegans, enhance starvation survival at higher densities. This effect is mediated by novel starvation survival signals, distinct from known ascarosides, aiding environmental information exchange.
Area of Science:
- * Nematode biology
- * Chemical ecology
- * Behavioral ecology
Background:
- * Food availability is a critical environmental factor influencing survival.
- * Organisms often integrate environmental information from conspecifics to improve survival strategies.
- * Starvation survival in nematodes is influenced by environmental cues.
Purpose of the Study:
- * To investigate the role of social information in starvation survival strategies.
- * To determine if density affects starvation survival in Caenorhabditis species.
- * To identify the chemical basis of density-dependent starvation survival.
Main Methods:
- * Comparative study of starvation survival in multiple Caenorhabditis species.
- * Manipulation of larval densities during starvation experiments.
- * Analysis of chemical communication signals involved in starvation response.
Main Results:
- * Increased starvation survival with higher densities observed in some Caenorhabditis species, including C. elegans.
- * Density-independent survival noted in other Caenorhabditis species.
- * A novel starvation survival signal, independent of ascarosides, mediates the density effect.
Conclusions:
- * Social cues, specifically density-dependent chemical signals, play a role in nematode starvation survival.
- * These signals are distinct from previously characterized nematode communication molecules (ascarosides).
- * The findings highlight the importance of inter-organismal communication for adapting to environmental challenges like famine.
