Titre
Odor-regulated oviposition behavior in an ecological specialist.
Type
article
Institution
UNIL/CHUV/UnisantƩ + institutions partenaires
PĆ©riodique
Auteur(s)
Ćlvarez-OcaƱa, R.
Auteure/Auteur
Shahandeh, M.P.
Auteure/Auteur
Ray, V.
Auteure/Auteur
Auer, T.O.
Auteure/Auteur
Gompel, N.
Auteure/Auteur
Benton, R.
Auteure/Auteur
Liens vers les personnes
Liens vers les unitƩs
ISSN
2041-1723
Statut Ć©ditorial
PubliƩ
Date de publication
2023-05-26
Volume
14
NumƩro
1
PremiĆØre page
3041
Peer-reviewed
Oui
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: epublish
Publication Status: epublish
RƩsumƩ
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.
PID Serval
serval:BIB_2381DE99CAE0
PMID
Open Access
Oui
Date de crƩation
2022-09-27T05:50:32.231Z
Date de crƩation dans IRIS
2025-05-20T14:03:10Z
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Nom
37236992_BIB_2381DE99CAE0.pdf
Version du manuscrit
preprint
Licence
https://creativecommons.org/licenses/by/4.0
Taille
3.63 MB
Format
Adobe PDF
PID Serval
serval:BIB_2381DE99CAE0.P001
URN
urn:nbn:ch:serval-BIB_2381DE99CAE02
Somme de contrƓle
(MD5):e7d57c507f5856a2e04044c3699b0f0c