Mate discrimination among subspecies through a conserved olfactory pathway
Author
Khallaf, Mohammed A.Auer, Thomas O.
Grabe, Veit
Depetris-Chauvin, Ana
Ammagarahalli, Byrappa
Zhang, Dan-Dan
Lavista-Llanos, Sofía
Kaftan, Filip
Weißflog, Jerrit
Matzkin, Luciano M.
Rollmann, Stephanie M.
Löfstedt, Christer
Svatoš, Aleš
Dweck, Hany K. M.
Sachse, Silke
Benton, Richard
Hansson, Bill S.
Knaden, Markus
Affiliation
Univ Arizona, Dept EntomolIssue Date
2020-06-17
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AMER ASSOC ADVANCEMENT SCIENCECitation
Khallaf, M. A., Auer, T. O., Grabe, V., Depetris-Chauvin, A., Ammagarahalli, B., Zhang, D. D., ... & Rollmann, S. M. (2020). Mate discrimination among subspecies through a conserved olfactory pathway. Sci Adv 6 (25), eaba5279. DOI: 10.1126/sciadv.aba5279Journal
SCIENCE ADVANCESRights
Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution License 4.0 (CC BY).Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
Communication mechanisms underlying the sexual isolation of species are poorly understood. Using four subspecies of Drosophila mojavensis as a model, we identify two behaviorally active, male-specific pheromones. One functions as a conserved male antiaphrodisiac in all subspecies and acts via gustation. The second induces female receptivity via olfaction exclusively in the two subspecies that produce it. Genetic analysis of the cognate receptor for the olfactory pheromone indicates an important role for this sensory pathway in promoting sexual isolation of subspecies, in combination with auditory signals. Unexpectedly, the peripheral sensory pathway detecting this pheromone is conserved molecularly, physiologically, and anatomically across subspecies. These observations imply that subspecies-specific behaviors arise from differential interpretation of the same peripheral cue, reminiscent of sexually conserved detection but dimorphic interpretation of male pheromones in Drosophila melanogaster. Our results reveal that, during incipient speciation, pheromone production, detection, and interpretation do not necessarily evolve in a coordinated manner.Note
Open access journalISSN
2375-2548Version
Final published versionSponsors
Vetenskapsrådetae974a485f413a2113503eed53cd6c53
10.1126/sciadv.aba5279
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Except where otherwise noted, this item's license is described as Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution License 4.0 (CC BY).