Microgeographic spatial structuring of Triatoma infestans (Hemiptera: Reduviidae) populations using wing geometric morphometry in the Argentine Chaco
We 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 wing...
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2012
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00222585_v49_n3_p504_Gaspe http://hdl.handle.net/20.500.12110/paper_00222585_v49_n3_p504_Gaspe |
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paper:paper_00222585_v49_n3_p504_Gaspe2023-06-08T14:48:30Z Microgeographic spatial structuring of Triatoma infestans (Hemiptera: Reduviidae) populations using wing geometric morphometry in the Argentine Chaco geometric morphometry population structure reinfestation Triatoma infestans vector control animal Argentina article Chagas disease disease carrier female forelimb geography Hemiptera histology male population dynamics Animals Argentina Chagas Disease Female Geography Hemiptera Insect Vectors Male Population Dynamics Wing Hemiptera Reduviidae Triatoma infestans We 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 significantly larger than for males. Log-transformed CS and length were significantly and positively correlated both for males and females. Males collected in domiciles had significantly 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 significantly different between ecotopes. Wing shape analyses showed the occurrence of significant 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 significantly 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. Among females, 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. © 2012 Entomological Society of America. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00222585_v49_n3_p504_Gaspe http://hdl.handle.net/20.500.12110/paper_00222585_v49_n3_p504_Gaspe |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
geometric morphometry population structure reinfestation Triatoma infestans vector control animal Argentina article Chagas disease disease carrier female forelimb geography Hemiptera histology male population dynamics Animals Argentina Chagas Disease Female Geography Hemiptera Insect Vectors Male Population Dynamics Wing Hemiptera Reduviidae Triatoma infestans |
| spellingShingle |
geometric morphometry population structure reinfestation Triatoma infestans vector control animal Argentina article Chagas disease disease carrier female forelimb geography Hemiptera histology male population dynamics Animals Argentina Chagas Disease Female Geography Hemiptera Insect Vectors Male Population Dynamics Wing Hemiptera Reduviidae Triatoma infestans Microgeographic spatial structuring of Triatoma infestans (Hemiptera: Reduviidae) populations using wing geometric morphometry in the Argentine Chaco |
| topic_facet |
geometric morphometry population structure reinfestation Triatoma infestans vector control animal Argentina article Chagas disease disease carrier female forelimb geography Hemiptera histology male population dynamics Animals Argentina Chagas Disease Female Geography Hemiptera Insect Vectors Male Population Dynamics Wing Hemiptera Reduviidae Triatoma infestans |
| description |
We 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 significantly larger than for males. Log-transformed CS and length were significantly and positively correlated both for males and females. Males collected in domiciles had significantly 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 significantly different between ecotopes. Wing shape analyses showed the occurrence of significant 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 significantly 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. Among females, 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. © 2012 Entomological Society of America. |
| title |
Microgeographic spatial structuring of Triatoma infestans (Hemiptera: Reduviidae) populations using wing geometric morphometry in the Argentine Chaco |
| title_short |
Microgeographic spatial structuring of Triatoma infestans (Hemiptera: Reduviidae) populations using wing geometric morphometry in the Argentine Chaco |
| title_full |
Microgeographic spatial structuring of Triatoma infestans (Hemiptera: Reduviidae) populations using wing geometric morphometry in the Argentine Chaco |
| title_fullStr |
Microgeographic spatial structuring of Triatoma infestans (Hemiptera: Reduviidae) populations using wing geometric morphometry in the Argentine Chaco |
| title_full_unstemmed |
Microgeographic spatial structuring of Triatoma infestans (Hemiptera: Reduviidae) populations using wing geometric morphometry in the Argentine Chaco |
| title_sort |
microgeographic spatial structuring of triatoma infestans (hemiptera: reduviidae) populations using wing geometric morphometry in the argentine chaco |
| publishDate |
2012 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00222585_v49_n3_p504_Gaspe http://hdl.handle.net/20.500.12110/paper_00222585_v49_n3_p504_Gaspe |
| _version_ |
1768546430525374464 |