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Updated: Aug 6, 2026
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Combining Quantitative Food-intake Assays and Forcibly Activating Neurons to Study Appetite in Drosophila
Published on: April 24, 2018
Protocol for quantifying Drosophila feeding behavior using flyPAD and optoPAD
Nicholas J Collins1, Madison N Endres1, Irina T Sinakevitch1
1Department of Biological Sciences, University of Delaware, Newark, DE, USA.
STAR Protocols
|July 21, 2026
Summary
This study introduces a precise method for quantifying fruit fly feeding behavior using the flyPAD/optoPAD system. This protocol aids in understanding how internal states and sensory cues influence food intake and dietary choices.
Area of Science:
- Neuroscience
- Behavioral Science
- Entomology
Background:
- Precise quantification of feeding behavior is crucial for understanding factors influencing food intake.
- Internal state, sensory cues, and neural activity significantly impact dietary choices.
- Existing methods may lack the precision or control needed for detailed feeding studies.
Purpose of the Study:
- To present a detailed protocol for consumption and dietary choice assays in Drosophila.
- To enable precise measurement of feeding events and nutrient preference.
- To facilitate the study of feeding behavior influenced by optogenetic stimulation.
Main Methods:
- Utilized the flyPAD/optoPAD system for high-precision feeding assays.
- Detailed procedures for food preparation, arena setup, and data acquisition.
- Included methods for analyzing feeding behavior, nutrient preference, and learning.
Main Results:
- The flyPAD/optoPAD system allows for accurate measurement of feeding events in multiple arenas.
- The protocol enables precise control over food substrates and optogenetic stimulation.
- This approach facilitates comprehensive analysis of Drosophila feeding patterns.
Conclusions:
- The presented protocol offers a robust method for quantifying Drosophila feeding behavior.
- This system aids in dissecting the neural and sensory underpinnings of food intake and dietary choice.
- The flyPAD/optoPAD system is a valuable tool for behavioral neuroscience research.
