Foraging Worms (IMAGE) Rockefeller University Caption C. elegans worms feeding on bacterial food sources. Individuals with low expression of a pheromone receptor are more inclined to explore and are fitter in environments with scattered food resources. Credit Laboratory of Neural Circuits and Behavior at The Rockefeller University/Nature Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.