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Acta Trop

Title:		Electroantennogram responses of the Triatoma dimidiata complex to volatiles produced by its exocrine glands
Author(s):		May-Concha IJ; Guerenstein PG; Malo EA; Catala S; Rojas JC;
Address:		"Laboratorio de Investigacion en Triatominos (LIT), Centro de Referencia de Vectores (CeReVe), Ministerio de Salud de la Nacion, Santa Maria de Punilla, Cordoba, Argentina; Laboratorio de Estudio de la Biologia de Insectos, Centro de Investigaciones Cientificas y Transferencia de Tecnologica a la Produccion (CICyTTP), Diamante, Entre Rios, Argentina. Electronic address: irving_jmc@hotmail.com. Laboratorio de Estudio de la Biologia de Insectos, Centro de Investigaciones Cientificas y Transferencia de Tecnologica a la Produccion (CICyTTP), Diamante, Entre Rios, Argentina. Grupo de Ecologia y Manejo de Artropodos, El Colegio de la Frontera Sur (ECOSUR), Tapachula, Chiapas, Mexico. Centro Regional de Investigaciones Cientificas y Tecnicas de La Rioja (CRILAR), Mendoza y Entre Rios, 5301, Anillaco, La Rioja, Argentina"
Journal Title:		Acta Trop
Year:		2018
Volume:		20180619
Issue:
Page Number:		336 - 343
DOI:		10.1016/j.actatropica.2018.06.018
ISSN/ISBN:		1873-6254 (Electronic) 0001-706X (Linking)
Abstract:		"Members of the Triatoma dimidiata complex are vectors of the protozoan parasite Trypanosoma cruzi, the etiologic agent of Chagas disease. Morphological and genetic studies indicate that T. dimidiata complex has three principal haplogroups in Mexico. However, whether there are differences in the olfactory physiology among the haplogroups of this complex and a possible correlation with their antennal phenotype are not yet known. Antennal responses to 13 compounds released from the metasternal and Brindley s glands, which are involved in the alarm and mating-related behaviours of T. dimidiata were investigated using electroantennography (EAG). Overall, of the 13 compounds tested, seven triggered EAG responses in both sexes of three Mexican haplogroups. The sensitivity of the EAG responses show some relationship with the total number of chemo-sensilla present on the antennae. Antennal sensitivity was different between sexes and haplogroups of the T. dimidiata complex. Discriminant analysis of EAG sensitivity was significant, separating the three haplogroups. Our finding is consistent with morphological and genetic evidence for haplogroups distinction within the complex"
Keywords:		Animals Chagas Disease/*transmission Exocrine Glands/*physiology Female Insect Vectors/genetics/*physiology Male Phenotype Triatoma/genetics/*physiology Antennal phenotype Antennal response Pheromone Triatomadimidiata complex Volatile compounds;
Notes:		"MedlineMay-Concha, I J Guerenstein, P G Malo, E A Catala, S Rojas, J C eng Netherlands 2018/06/23 Acta Trop. 2018 Sep; 185:336-343. doi: 10.1016/j.actatropica.2018.06.018. Epub 2018 Jun 19"