Modulation by NPYR underlies experience-dependent, sexually dimorphic learning
The evolutionary paths taken by each sex within a given species sometimes diverge, resulting in behavioral differences. Given their distinct needs, the mechanism by which each sex learns from a shared experience is still an open question. Here, we reveal sexual dimorphism in learning: C. elegans males do not learn to avoid the pathogenic bacteria PA14 as efficiently and rapidly as hermaphrodites. Notably, neuronal activity following pathogen exposure was dimorphic: hermaphrodites generate robust representations while males, in line with their behavior, exhibit contrasting representations. Transcriptomic and behavioral analysis revealed that the neuropeptide receptor npr-5, an ortholog of the mammalian NPY receptor, regulates male learning by modulating neuronal activity. Furthermore, we show the dependency of the males' decision-making on their sexual status and demonstrate the pivotal role of npr-5 as a modulator of incoming sensory cues. Taken together, we portray sex-specific plasticity in behavior toward a shared experience by modulating learning. Overall design: To understand the whole animal transcriptomics of hermaphrodites and males towards PA14 exposure after 6 hours. We utilized bulk-optimized protocol of Marseq to derive transcriptomic datsets of 4 biological replicates of each sex after 6 hours exposure to OP50 or PA14