Kromann, Anne Sophie Haastrup
(2012).
Modulation of olfactory information in the antennal lobe of Spodoptera littoralis.
Diss. (sammanfattning/summary)
Alnarp, Sweden :
Sveriges lantbruksuniv.,
Acta Universitatis Agriculturae Sueciae, 1652-6880
; 2012:60
ISBN 978-91-576-7707-5
[Doctoral thesis]
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Abstract
In order to respond appropriately to external stimuli, e.g. odours in the environment,insects have to evaluate these stimuli in a context of relevance and need. These decisions are, in turn, based on internal physiological status, such as mating status.
In the cotton leafworm, Spodoptera littoralis, mating induces profound physiological changes that alter the behavioural output to fit with the current needs of the animal. In female S. littoralis, mating switches the behavioural attraction from food sources to oviposition sites and concurrently down- and up-regulates olfactory neuron sensitivity. This switch in olfactory sensitivity is correlated with a transient increase in dopamine levels in the primary olfactory brain centres, the antennal lobes.
In male S. littoralis, mating induces a transient behavioural and olfactory inhibition towards female-emitted sex pheromone as well as to mating site-related odours. However, responses towards food sources remain constant. The shift in olfactory responsiveness is not correlated with changes in dopamine levels, but may be regulated by neuropeptides expressed in the olfactory system. Distribution patterns of 6 of the most abundant neuropeptides reveal distinct differential expressions within the antennal lobe glomerular array, providing the possibility for selective and state-dependent modulation of the olfactory system.
Authors/Creators: | Kromann, Anne Sophie Haastrup | ||||||||||
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Title: | Modulation of olfactory information in the antennal lobe of Spodoptera littoralis | ||||||||||
Series/Journal: | Acta Universitatis Agriculturae Sueciae (1652-6880) | ||||||||||
Year of publishing : | 2012 | ||||||||||
Number: | 2012:60 | ||||||||||
Number of Pages: | 52 | ||||||||||
Papers/manuscripts: |
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Place of Publication: | Alnarp, Sweden | ||||||||||
Publisher: | Dept. of Plant Protection Biology, Swedish University of Agricultural Sciences | ||||||||||
ISBN for printed version: | 978-91-576-7707-5 | ||||||||||
ISSN: | 1652-6880 | ||||||||||
Language: | English | ||||||||||
Publication Type: | Doctoral thesis | ||||||||||
Full Text Status: | Public | ||||||||||
Agris subject categories.: | X Agricola extesions > X30 Life sciences | ||||||||||
Subjects: | (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) > Other Biological Topics | ||||||||||
Agrovoc terms: | spodoptera littoralis, olfactory organs, copulation, neuropeptides | ||||||||||
Keywords: | Spodoptera littoralis, Olfaction, Modulation, Mating, Neuromodulators | ||||||||||
URN:NBN: | urn:nbn:se:slu:epsilon-e-603 | ||||||||||
Permanent URL: | http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-603 | ||||||||||
ID Code: | 9021 | ||||||||||
Department: | (LTJ, LTV) > Department of Plant Protection Biology | ||||||||||
Deposited By: | sophie kromann | ||||||||||
Deposited On: | 04 Sep 2012 11:37 | ||||||||||
Metadata Last Modified: | 02 Dec 2014 10:51 |
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