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Influence of blood meal on the responsiveness of olfactory receptor neurons in antennal sensilla trichodea of the yellow fever mosquito, Aedes aegypti

Siju, K.P. and Hill, Sharon and Hansson, Bill and Ignell, Rickard (2010). Influence of blood meal on the responsiveness of olfactory receptor neurons in antennal sensilla trichodea of the yellow fever mosquito, Aedes aegypti. Journal of insect physiology. 56:6, 659-665
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Official URL: http://dx.doi.org/10.1016/j.jinsphys.2010.02.002

Abstract

In female Aedes aegypti L. mosquitoes, a blood meal induces physiological and behavioral changes. Previous studies have shown that olfactory receptor neurons (ORNs) housed in grooved peg sensilla on the antennae of Ae. aegypti down-regulate their sensitivity to lactic acid, a key component driving host-seeking behavior, which correlates with observed changes in the host-seeking behavior of this species. In the present study, we performed electrophysiological recordings from the most abundant antennal sensillum type, sensilla trichodea. Our results indicate that the response spectra of ORNs contained within most trichoid sensilla do not change in response to blood feeding. However, we observe an increase in sensitivity to primarily indole and phenolic compounds in neurons housed within four of the five functional types of short blunt tipped II trichoid sensilla, both at 24 and 72 h post-blood feeding, which was more pronounced at 24 h than 72 h. Furthermore, sensitivity to undecanone, acetic acid and propionic acid was observed to increase 72 h post-blood meal. Considering the timing of these changes, we believe that these neurons may be involved in driving the orientation behavior of female mosquitoes to oviposition sites, which are known to release these compounds.

Authors/Creators:Siju, K.P. and Hill, Sharon and Hansson, Bill and Ignell, Rickard
Title:Influence of blood meal on the responsiveness of olfactory receptor neurons in antennal sensilla trichodea of the yellow fever mosquito, Aedes aegypti
Series/Journal:Journal of insect physiology (0022-1910)
Year of publishing :2010
Volume:56
Number:6
Page range:659-665
Publisher:Elsevier Ltd.
ISSN:0022-1910
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Accepted version
Full Text Status:Public
Keywords:Olfaction, Oviposition, Gonotrophic cycle, Disease vector, Modulation
URN:NBN:urn:nbn:se:slu:epsilon-4-295
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-4-295
ID Code:5118
Department:(LTJ, LTV) > Department of Plant Protection Biology
Deposited By: Jenny Casey Eriksson
Deposited On:24 Aug 2010 00:00
Metadata Last Modified:02 Dec 2014 10:37

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