Microgeographic spatial structuring of triatoma infestans (Hemiptera: Reduviidae) populations using wing geometric morphometry in the Argentine Chaco

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dc.contributor.authorGaspe, M.S.
dc.contributor.authorSchachter-Broide, J.
dc.contributor.authorGurevitz, J.M.
dc.contributor.authorKitron, U.
dc.contributor.authorGürtler, R.E.
dc.contributor.authorDujardin, J.P.
dc.date.accessioned2013-04-17T13:25:17Z
dc.date.available2013-04-17T13:25:17Z
dc.date.copyright2012
dc.date.issued2012-05
dc.description.abstractWe investigated the occurrence of spatial structuring in Triatoma infestans (Klug) (Hemiptera: Reduviidae) populations 12 yr after the last community-wide insecticide spraying campaign in rural Pampa del Indio, in the Gran Chaco of northeastern Argentina. In total, 172 male and 149 female right wings collected at 16 georeferenced sites with at least 10 individuals of the same sex were analyzed using geometric morphometry. Mean female body length and wing centroid size (CS) were signiÞcantly larger than for males. Log-transformed CS and length were signiÞcantly and positively correlated both for males and females. Males collected in domiciles had signiÞcantly smaller CS than those collected in peridomestic structures both closed (kitchens or storerooms) or open (chicken coops), in agreement with our previous results elsewhere in the dry Argentine Chaco. Female wing CS was not signiÞcantly different between ecotopes. Wing shape analyses showed the occurrence of signiÞcant geographic structuring in males and females combined and in males only. Male wings showed a strong association between Mahalanobis distance and geographic distance. In general, Mahalanobis distances were signiÞcantly different between collection sites located 4 km apart. For collection sites located 4 km apart, the greater the geographic distance the larger the difference in wing shape variables.Amongfemales, only a partial correspondence between geographic groups and Mahalanobis distances was recorded. The strong spatial structuring found in T. infestans populations may be useful for the identification of putative reinfestation sources after vector control interventions.en
dc.formatTexten
dc.format.extent1 digital file (p. 504-514)en
dc.format.mimetypeApplication/pdf
dc.identifier.citationGaspe, M.S., Schachter-Broide, J., Gurevitz, J.M., Kitron, U., Gürtler, R.E., & Dujardin, J.P. (2012). Microgeographic Spatial Structuring of Triatoma infestans (Hemiptera: Reduviidae) Populations Using Wing Geometric Morphometry in the Argentine Chaco. Journal of medical entomology, 49(3), 504-514. http://dx.doi.org/10.1603/ME11176en
dc.identifier.issn0022-2585
dc.identifier.urihttp://hdl.handle.net/10625/50941
dc.language.isoen
dc.publisherEntomological Society of Americaen
dc.subjectTRIATOMA INFESTANSen
dc.subjectGEOMETRIC MORPHOMETRYen
dc.subjectPOPULATION STRUCTUREen
dc.subjectVECTOR CONTROLen
dc.subjectREINFESTATIONen
dc.subjectINFESTATIONen
dc.subjectVECTOR-BORNE DISEASESen
dc.subjectSPATIAL DISTRIBUTIONen
dc.titleMicrogeographic spatial structuring of triatoma infestans (Hemiptera: Reduviidae) populations using wing geometric morphometry in the Argentine Chacoen
dc.typeJournal Article (peer-reviewed)en
idrc.copyright.holderEntomological Society of America
idrc.dspace.accessIDRC Onlyen
idrc.noaccessDue to copyright restrictions the full text of this research output is not available in the IDRC Digital Library or by request from the IDRC Library. / Compte tenu des restrictions relatives au droit d'auteur, le texte intégral de cet extrant de recherche n'est pas accessible dans la Bibliothèque numérique du CRDI, et il n'est pas possible d'en faire la demande à la Bibliothéque du CRDI.en
idrc.project.componentnumber103696012
idrc.project.number103696
idrc.project.titleEcohealth Approaches to Communicable Disease (Latin America and the Caribbean)en
idrc.rims.adhocgroupIDRC SUPPORTEDen

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