Odor-regulated oviposition behavior in an ecological specialist.

Détails

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Etat: Public
Version: de l'auteur⸱e
Licence: CC BY 4.0
ID Serval
serval:BIB_2381DE99CAE0
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Odor-regulated oviposition behavior in an ecological specialist.
Périodique
Nature communications
Auteur⸱e⸱s
Álvarez-Ocaña R., Shahandeh M.P., Ray V., Auer T.O., Gompel N., Benton R.
ISSN
2041-1723 (Electronic)
ISSN-L
2041-1723
Statut éditorial
Publié
Date de publication
26/05/2023
Peer-reviewed
Oui
Volume
14
Numéro
1
Pages
3041
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: epublish
Résumé
Colonization of a novel ecological niche can require, or be driven by, evolution of an animal's behaviors promoting their reproductive success. We investigated the evolution and sensory basis of oviposition in Drosophila sechellia, a close relative of Drosophila melanogaster that exhibits extreme specialism for Morinda citrifolia noni fruit. D. sechellia produces fewer eggs than other drosophilids and lays these almost exclusively on noni substrates. We show that visual, textural and social cues do not explain this species-specific preference. By contrast, we find that loss of olfactory input in D. sechellia, but not D. melanogaster, essentially abolishes egg-laying, suggesting that olfaction gates gustatory-driven noni preference. Noni odors are detected by redundant olfactory pathways, but we discover a role for hexanoic acid and the cognate Ionotropic receptor 75b (Ir75b) in odor-evoked oviposition. Through receptor exchange in D. melanogaster, we provide evidence for a causal contribution of odor-tuning changes in Ir75b to the evolution of D. sechellia's oviposition behavior.
Mots-clé
Animals, Female, Drosophila melanogaster/physiology, Odorants, Oviposition, Specialization, Drosophila/metabolism
Pubmed
Web of science
Open Access
Oui
Création de la notice
27/09/2022 6:50
Dernière modification de la notice
23/01/2024 7:21
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