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Updated: Apr 7, 2026

A Temperature Gradient Assay to Determine Thermal Preferences of Drosophila Larvae

A Temperature Gradient Assay to Determine Thermal Preferences of Drosophila Larvae

Published on: June 25, 2018

Parallel circuits control temperature preference in Drosophila during ageing.

Hsiang-Wen Shih¹, Chia-Lin Wu², Sue-Wei Chang³

¹Institute of Biotechnology, National Tsing Hua University, Hsinchu 30013, Taiwan.

Nature Communications

|July 17, 2015

Summary

This summary is machine-generated.

Aging impairs temperature regulation in fruit flies due to a shift in mushroom body circuits. Restoring dopamine in specific neurons can reverse this age-related decline in cold avoidance behavior.

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Design and Analysis of Temperature Preference Behavior and its Circadian Rhythm in Drosophila

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Published on: January 13, 2014

Area of Science:

Neuroscience
Gerontology
Animal Behavior

Background:

Temperature detection and regulation are crucial for animal behavior.
These thermoregulatory functions decline with age, especially in cold conditions.
The underlying cellular and molecular mechanisms of age-related thermoregulation deficits are poorly understood.

Purpose of the Study:

To investigate age-related changes in temperature preference in adult fruit flies.
To identify the neural circuits involved in age-dependent cold avoidance.
To explore the molecular mechanisms, specifically dopamine signaling, in age-related behavioral shifts.

Main Methods:

Utilized adult fruit flies (Drosophila melanogaster) to study age-related behavioral changes.
Analyzed the roles of two parallel mushroom body (MB) circuits: the β'- and β-systems.
Manipulated dopamine levels in specific neuronal pathways (β'-afferent neurons) to assess functional recovery.

Main Results:

Identified an age-related shift in temperature preference linked to altered contributions of MB β'- and β-circuits.
Found that the β'-circuit mediates cold avoidance in young flies via dopamine, while the β-circuit becomes more dominant in aged flies.
Demonstrated that increasing dopamine in β'-afferent neurons of aged flies restores cold sensitivity, indicating functional reversibility.

Conclusions:

Age-related deficits in cold avoidance behavior are associated with a neural circuit shift in the mushroom body.
Dopamine signaling in the β'-circuit plays a critical role in modulating age-dependent thermoregulatory behavior.
These findings offer a framework for understanding how neural circuits and molecular pathways influence homeostatic changes during aging and senescence.