Ancestral neural circuits potentiate the origin of a female sexual behavior

Courtship interactions are remarkably diverse in form and complexity among species. How neural circuits evolve to encode new behaviors that are functionally integrated into these dynamic social interactions is unknown. Here we report a recently originated female sexual behavior in the island endemic...

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Veröffentlicht in:bioRxiv
Hauptverfasser: Li, Minhao, Chen, Dawn S, Junker, Ian P, Szorenyi, Fabianna, Chen, Guan Hao, Berger, Arnold J, Comeault, Aaron A, Matute, Daniel R, Ding, Yun
Format: Journal Article Paper
Sprache:Englisch
Veröffentlicht: United States Cold Spring Harbor Laboratory Press 07.12.2023
Cold Spring Harbor Laboratory
Ausgabe:1.1
Schlagworte:
Copulation
Courtship
Endemic species
Evolutionary Biology
Females
Males
Neural networks
Sexual behavior
Social behavior
Social interactions
ISSN:2692-8205, 2692-8205
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Zusammenfassung:Courtship interactions are remarkably diverse in form and complexity among species. How neural circuits evolve to encode new behaviors that are functionally integrated into these dynamic social interactions is unknown. Here we report a recently originated female sexual behavior in the island endemic species , where females signal receptivity to male courtship songs by spreading their wings, which in turn promotes prolonged songs in courting males. Copulation success depends on this female signal and correlates with males' ability to adjust his singing in such a social feedback loop. Functional comparison of sexual circuitry across species suggests that a pair of descending neurons, which integrates male song stimuli and female internal state to control a conserved female abdominal behavior, drives wing spreading in . This co-option occurred through the refinement of a pre-existing, plastic circuit that can be optogenetically activated in an outgroup species. Combined, our results show that the ancestral potential of a socially-tuned key circuit node to engage the wing motor program facilitates the expression of a new female behavior in appropriate sensory and motivational contexts. More broadly, our work provides insights into the evolution of social behaviors, particularly female behaviors, and the underlying neural mechanisms.
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Competing Interest Statement: The authors have declared no competing interest.
ISSN:2692-8205
2692-8205
DOI:10.1101/2023.12.05.570174