Related Experiment Video
Updated: Dec 29, 2025
07:51
Preparing Adult Drosophila melanogaster for Whole Brain Imaging during Behavior and Stimuli Responses
Published on: April 27, 2021
6.9K
Imaging brain activity during complex social behaviors in Drosophila with Flyception2
Dhruv Grover1, Takeo Katsuki2, Jinfang Li2
1Kavli Institute for Brain and Mind, University of California, San Diego, La Jolla, CA, USA. dhgrover@ucsd.edu.
Nature Communications
|February 1, 2020
Summary
Researchers developed a new system for brain imaging in freely moving flies, enabling the study of complex behaviors like copulation. They found courtship neurons (P1) are inactive during copulation, while others (mAL) remain active.
Area of Science:
- Neuroscience
- Animal Behavior
- Biophysics
Background:
- In vivo brain imaging in freely moving animals is crucial for understanding neural circuits underlying behavior.
- Current techniques limit recordings to simple behaviors in Drosophila, restricting the scope of neuroethological studies.
Purpose of the Study:
- To develop and validate a novel system for high-resolution optical in vivo recordings in freely behaving Drosophila.
- To expand the range of accessible behaviors for brain activity imaging, including complex social interactions like copulation.
Main Methods:
- A retroreflective marker-based tracking system was integrated with ratiometric brain imaging.
- This system allowed simultaneous monitoring of fly movement and neural activity during natural behaviors.
Main Results:
- The system successfully enabled brain activity imaging in male Drosophila during copulation.
- P1 neurons, previously known to be active during courtship, were found to be inactive during copulation.
- GABAergic mAL neurons remained active during copulation, indicating a potential inhibitory role.
Conclusions:
- The developed system significantly broadens the repertoire of behaviors amenable to neural imaging in Drosophila.
- Neural activity patterns during copulation differ from courtship, with P1 neurons being silenced and mAL neurons remaining active.
- mAL neurons may play a role in counteracting P1 neuron activity during mating.
