« Previous AbstractIsolation and composition of the constitutive agglutinins from haploid Saccharomyces cerevisiae cells    Next AbstractDiscrimination of genetic and geographical groups of grape varieties (Vitis vinifera L.) based on their volatile organic compounds »

J Insect Physiol

Title:		"Influence of blood meal on the responsiveness of olfactory receptor neurons in antennal sensilla trichodea of the yellow fever mosquito, Aedes aegypti"
Author(s):		Siju KP; Hill SR; Hansson BS; Ignell R;
Address:		"Division of Chemical Ecology, Department of Plant Protection Biology, Swedish University of Agricultural Sciences, Box 102, SE-230 53 Alnarp, Sweden. siju.k.purayil@ltj.slu.se"
Journal Title:		J Insect Physiol
Year:		2010
Volume:		20100219
Issue:		6
Page Number:		659 - 665
DOI:		10.1016/j.jinsphys.2010.02.002
ISSN/ISBN:		1879-1611 (Electronic) 0022-1910 (Linking)
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 72h post-blood feeding, which was more pronounced at 24h than 72h. Furthermore, sensitivity to undecanone, acetic acid and propionic acid was observed to increase 72h 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"
Keywords:		"Acetic Acid/pharmacology Aedes/anatomy & histology/*physiology Animals Cresols/pharmacology Dose-Response Relationship, Drug Feeding Behavior/drug effects/*physiology Female Olfactory Receptor Neurons/drug effects/*physiology Phenols/pharmacology Pheromon;"
Notes:		"MedlineSiju, K P Hill, Sharon R Hansson, Bill S Ignell, Rickard eng England 2010/02/16 J Insect Physiol. 2010 Jun; 56(6):659-65. doi: 10.1016/j.jinsphys.2010.02.002. Epub 2010 Feb 19"