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Neural coding merges sex and habitat chemosensory signals in an insect herbivore.

Trona, Federica and Anfora, Gianfranco and Balkenius, Anna and Bengtsson, Marie and Tasin, Marco and Knight, Alan and Janz, Niklas and Witzgall, Peter and Ignell, Rickard (2013). Neural coding merges sex and habitat chemosensory signals in an insect herbivore. . 280:1760, 1-8
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Official URL: http://dx.doi.org/10.1098/rspb.2013.0267

Abstract

Understanding the processing of odour mixtures is a focus in olfaction research. Through a neuroethological approach, we demonstrate that different odour types, sex and habitat cues, are coded together in an insect herbivore. Stronger flight attraction of codling moth males, Cydia pomonella, to blends of female sex pheromone and plant odour, compared with single compounds, was corroborated by functional imaging of the olfactory centres in the insect brain, the antennal lobes (AL). The macroglomerular complex (MGC) in the AL, which is dedicated to pheromone perception, showed an enhanced response to blends of pheromone and plant signals, while the response in glomeruli surrounding the MGC was suppressed. Intracellular recordings from AL projection neurons that transmit odour information to higher brain centres, confirmed this synergistic interaction in the MGC. These findings underscore that, in nature, sex pheromone and plant odours are perceived as an ensemble. That mating and habitat cues are coded as blends in the MGC of the AL highlights the dual role of plant signals in habitat selection and in premating sexual communication. It suggests that the MGC is a common target for sexual and natural selection in moths, facilitating ecological speciation.

Authors/Creators:Trona, Federica and Anfora, Gianfranco and Balkenius, Anna and Bengtsson, Marie and Tasin, Marco and Knight, Alan and Janz, Niklas and Witzgall, Peter and Ignell, Rickard
Title:Neural coding merges sex and habitat chemosensory signals in an insect herbivore.
Series/Journal:Proceedings of the Royal Society B: Biological Sciences
Year of publishing :2013
Volume:280
Number:1760
Page range:1-8
Number of Pages:8
Publisher:Royal Society Publishing
ISSN:0962-8452
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Accepted version
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Zoology
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Behavioural Sciences Biology
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Evolutionary Biology
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Structural Biology
Agrovoc terms:Biochemistry, Insecta, Olfaction
Keywords:chemical communication, premating isolation, odour blends, intracellular recordings, functional imaging, Cydia pomonella
URN:NBN:urn:nbn:se:slu:epsilon-e-1617
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-1617
Additional ID:
Type of IDID
DOI10.1098/rspb.2013.0267
ID Code:10782
Department:(LTJ, LTV) > Department of Plant Protection Biology
Deposited By: SLUpub Connector
Deposited On:04 Sep 2013 06:50
Metadata Last Modified:15 Dec 2014 01:40

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