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Acta Trop

Title:		Behavioral and electrophysiological responses of Culex quinquefasciatus to certain fatty acid esters
Author(s):		Seenivasagan T; Guha L; Iqbal ST;
Address:		"Defence Research & Development Establishment, Jhansi Road, Gwalior, 474002 M.P., India. Electronic address: seenivasagan@yahoo.com"
Journal Title:		Acta Trop
Year:		2013
Volume:		20130917
Issue:		3
Page Number:		606 - 612
DOI:		10.1016/j.actatropica.2013.09.009
ISSN/ISBN:		1873-6254 (Electronic) 0001-706X (Linking)
Abstract:		"Oviposition response of gravid Culex quinquefasciatus females to a series of synthetic fatty acid esters was evaluated at 10ppm under laboratory conditions. Octyl tridecanoate and propyl octadecanoate elicited 85% and 73% increased ovipositional responses respectively, compared to control, among the 16 esters tested. Other 14 esters showed highly significant repellency (67-96%) to gravid females. Standard 3-methyl indole received 69% increased egg deposition compared to control. In the Y-tube olfactometer, gravid C. quinquefasciatus females exhibited 78, 64% and 58% orientation respectively to octyl tridecanoate, propyl octadecanoate and 3-methyl indole. Gravid females exhibited 19-41% reduced orientation toward treatment odors of other esters significantly different from respective control. Electroantennogram studies revealed 4-18-fold increased antennal response, in which 3-methyl indole, octyl tridecanoate and propyl octadecanoate elicited 8-, 18- and 15-fold EAG response respectively, compared to control. Relative EAG response of octyl tridecanoate compared to standard 3-methyl indole was significantly different. Reduced EAG responses were elicited by FAE-06, -08, -13, -14 and -15, while the relative EAG responses of other esters were at par with the standard stimulus. These, esters could be utilized potentially as oviposition attractants and repellents against C. quinquefasciatus females to reduce the breeding in polluted water along with existing integrated vector control methods"
Keywords:		"Animals Arthropod Antennae/drug effects/physiology Behavior, Animal/drug effects Chemotactic Factors/*metabolism Culex/*drug effects/*physiology Electrophysiological Phenomena/drug effects Fatty Acids/*metabolism Female Oviposition/*drug effects Smell/phy;"
Notes:		"MedlineSeenivasagan, Thangaraj Guha, Lopamudra Iqbal, S Thanvir eng Research Support, Non-U.S. Gov't Netherlands 2013/09/24 Acta Trop. 2013 Dec; 128(3):606-12. doi: 10.1016/j.actatropica.2013.09.009. Epub 2013 Sep 17"