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Floral to green: mating switches moth olfactory coding and preference

Ahmed, Saveer and Kromann, Sophie and Birgersson, Göran and Lindblom, Tobias and Bengtsson, Marie and Balkenius, Anna and Hansson, Bill S. and Witzgall, Peter and Becher, Paul G and Ignell, Rickard (2012). Floral to green: mating switches moth olfactory coding and preference. Proceedings of the Royal Society B: Biological Sciences. 279:1737, 2314–2322
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Official URL: http://dx.doi.org/10.1098/rspb.2011.2710

Abstract

Mating induces profound physiological changes in a wide range of insects, leading to behavioural adjustments to match the internal state of the animal. Here, we show for the first time, to our knowledge, that a noctuid moth switches its olfactory response from food to egg-laying cues following mating. Unmated females of the cotton leafworm (Spodoptera littoralis) are strongly attracted to lilac flowers (Syringa vulgaris). After mating, attraction to floral odour is abolished and the females fly instead to green-leaf odour of the larval host plant cotton, Gossypium hirsutum. This behavioural switch is owing to a marked change in the olfactory representation of floral and green odours in the primary olfactory centre, the antennal lobe (AL). Calcium imaging, using authentic and synthetic odours, shows that the ensemble of AL glomeruli dedicated to either lilac or cotton odour is selectively up- and downregulated in response to mating. A clear-cut behavioural modulation as a function of mating is a useful substrate for studies of the neural mechanisms underlying behavioural decisions. Modulation of odour-driven behaviour through concerted regulation of odour maps contributes to our understanding of state-dependent choice and host shifts in insect herbivores.

Authors/Creators:Ahmed, Saveer and Kromann, Sophie and Birgersson, Göran and Lindblom, Tobias and Bengtsson, Marie and Balkenius, Anna and Hansson, Bill S. and Witzgall, Peter and Becher, Paul G and Ignell, Rickard
Title:Floral to green: mating switches moth olfactory coding and preference
Series/Journal:Proceedings of the Royal Society B: Biological Sciences (0962-8452)
Year of publishing :2012
Volume:279
Number:1737
Page range:2314–2322
Number of Pages:9
Publisher:The Royal Society
ISSN:0962-8452
Language:English
Additional Information:This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Published version
Full Text Status:Public
Agris subject categories.:F Plant production > F40 Plant ecology
H Protection of plants and stored products > H01 Protection of plants - General aspects
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 405 Other Agricultural Sciences > Environmental Sciences related to Agriculture and Land-use
Keywords:olfaction, mating, modulation, host finding, herbivore, Spodoptera littoralis
URN:NBN:urn:nbn:se:slu:epsilon-e-1714
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-1714
Additional ID:
Type of IDID
Web of Science (WoS)WOS:000303888500004
DOI10.1098/rspb.2011.2710
ID Code:10535
Department:(LTJ, LTV) > Department of Plant Protection Biology
Deposited By: SLUpub Connector
Deposited On:22 Nov 2013 14:42
Metadata Last Modified:20 Feb 2015 03:35

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