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Modulation by NPY/NPF-like receptor underlies experience-dependent, sexually dimorphic learning
Sonu Peedikayil-Kurien1,2, Rizwanul Haque1,2, Asaf Gat1,2
1Department of Brain Sciences, Weizmann Institute of Science, Rehovot, 7610001, Israel.
Nature Communications
|January 14, 2025
Summary
Male and female worms learn differently. A neuropeptide receptor, NPR-5, controls male learning and decision-making by modulating neuronal activity in response to shared experiences.
Area of Science:
- Neuroscience
- Behavioral Biology
- Genetics
Background:
- Sexual selection can drive divergent evolutionary paths and behavioral differences between sexes.
- Understanding sex-specific learning mechanisms from shared experiences remains a key question in biology.
Purpose of the Study:
- To investigate sexual dimorphism in learning and avoidance behavior in C. elegans.
- To identify the molecular and neural mechanisms underlying sex-specific learning.
Main Methods:
- Behavioral assays measuring avoidance of pathogenic bacteria (PA14).
- Neuronal activity imaging to assess dimorphic representations.
- Transcriptomic analysis to identify key genes.
- Genetic manipulation of the npr-5 gene.
Main Results:
- C. elegans males exhibit less efficient and slower learning to avoid PA14 compared to hermaphrodites.
- Neuronal activity patterns during pathogen exposure are sexually dimorphic.
- The neuropeptide receptor NPR-5 regulates male learning by modulating neuronal activity.
- Male decision-making is dependent on sexual status, with NPR-5 acting as a sensory cue modulator.
Conclusions:
- Neuromodulators like NPR-5 drive sex-specific behavioral plasticity in response to environmental stimuli.
- Sexual status significantly influences male decision-making processes.
- These findings provide insights into the neural basis of sex-specific adaptive behaviors.
