Where you live shapes who you are: morphological changes in urban Triatoma infestans

Autores
Piccinali, Romina Valeria; Nattero, Julieta; Cano, Florencia; Sánchez Casaccia, María de la Paz; Carbajal de la Fuente, Ana Laura
Año de publicación
2025
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Introduction: Urbanization has transformed landscapes, driving ecological and morphological changes in insects. Chagas, traditionally a multidimensional rural problem, is increasingly reported in urban areas. Triatoma infestans, the primary vector of Chagas disease in the Southern Cone, has been reported in urban centers of San Juan, Argentina, for decades. Using morphometric and colorimetric analyses, we assess how urbanization influences the morphology and coloration of T. infestans.Materials and Methods: A total of 105 adults from five urban and one rural population of San Juan were analyzed.Wings, pronota, heads, and legs were measured and compared between populations and sexes. Principal Component and Canonical Variate Analyses were performed to assess shape variations. Kruskal-Wallis and Wilcoxon tests, and linear models examined size differences. Colorimetric analyses searched for wing and connexivum color differences between individuals.Results: Multivariate analyses revealed significant morphological differentiation of wing, pronotum, and head shapes, primarily distinguishing the rural Valle Fértil from urban populations. Centroid size analyses indicated that rural individuals exhibited larger body structures, a pattern generally consistent across sexes. Furthermore, leg morphology also varied, with Valle Fértil insects possessing greater femur length and width compared to their urban counterparts. Nosignificant color differences were found across populations or sexes.Discussion: Urban T. infestans exhibit size reductions, aligning with Schofield’s simplification hypothesis and possibly influenced by the Urban Heat Island effect. Shape changes, more pronounced in wings and pronota, suggest other influences beyond the rural-urban gradient, potentially including developmental plasticity, flight demands, and genetic drift. These findingsunderscore the need for urban-specific Chagas disease control strategies and further research on the evolutionary dynamics of T. infestans in urban environments.
Fil: Piccinali, Romina Valeria. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina
Fil: Nattero, Julieta. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina
Fil: Cano, Florencia. No especifíca;
Fil: Sánchez Casaccia, María de la Paz. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Dirección Nacional de Institutos de Investigación. Administración Nacional de Laboratorios e Institutos de Salud. Centro Nacional de Diagnóstico e Investigaciones Endemo-epidémicas; Argentina
Fil: Carbajal de la Fuente, Ana Laura. Dirección Nacional de Institutos de Investigación. Administración Nacional de Laboratorios e Institutos de Salud. Centro Nacional de Diagnóstico e Investigaciones Endemo-epidémicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
TRIATOMINES
URBANIZATION
GEOMETRIC MORPHOMETRIC
ARGENTINA
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/265575
Acceder
id CONICETDig_92520fb20e6a9bebc8f4a30073db1aff
oai_identifier_str oai:ri.conicet.gov.ar:11336/265575
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Where you live shapes who you are: morphological changes in urban Triatoma infestansPiccinali, Romina ValeriaNattero, JulietaCano, FlorenciaSánchez Casaccia, María de la PazCarbajal de la Fuente, Ana LauraTRIATOMINESURBANIZATIONGEOMETRIC MORPHOMETRICARGENTINAhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Introduction: Urbanization has transformed landscapes, driving ecological and morphological changes in insects. Chagas, traditionally a multidimensional rural problem, is increasingly reported in urban areas. Triatoma infestans, the primary vector of Chagas disease in the Southern Cone, has been reported in urban centers of San Juan, Argentina, for decades. Using morphometric and colorimetric analyses, we assess how urbanization influences the morphology and coloration of T. infestans.Materials and Methods: A total of 105 adults from five urban and one rural population of San Juan were analyzed.Wings, pronota, heads, and legs were measured and compared between populations and sexes. Principal Component and Canonical Variate Analyses were performed to assess shape variations. Kruskal-Wallis and Wilcoxon tests, and linear models examined size differences. Colorimetric analyses searched for wing and connexivum color differences between individuals.Results: Multivariate analyses revealed significant morphological differentiation of wing, pronotum, and head shapes, primarily distinguishing the rural Valle Fértil from urban populations. Centroid size analyses indicated that rural individuals exhibited larger body structures, a pattern generally consistent across sexes. Furthermore, leg morphology also varied, with Valle Fértil insects possessing greater femur length and width compared to their urban counterparts. Nosignificant color differences were found across populations or sexes.Discussion: Urban T. infestans exhibit size reductions, aligning with Schofield’s simplification hypothesis and possibly influenced by the Urban Heat Island effect. Shape changes, more pronounced in wings and pronota, suggest other influences beyond the rural-urban gradient, potentially including developmental plasticity, flight demands, and genetic drift. These findingsunderscore the need for urban-specific Chagas disease control strategies and further research on the evolutionary dynamics of T. infestans in urban environments.Fil: Piccinali, Romina Valeria. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; ArgentinaFil: Nattero, Julieta. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; ArgentinaFil: Cano, Florencia. No especifíca;Fil: Sánchez Casaccia, María de la Paz. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Dirección Nacional de Institutos de Investigación. Administración Nacional de Laboratorios e Institutos de Salud. Centro Nacional de Diagnóstico e Investigaciones Endemo-epidémicas; ArgentinaFil: Carbajal de la Fuente, Ana Laura. Dirección Nacional de Institutos de Investigación. Administración Nacional de Laboratorios e Institutos de Salud. Centro Nacional de Diagnóstico e Investigaciones Endemo-epidémicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFrontiers Media2025-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/265575Piccinali, Romina Valeria; Nattero, Julieta; Cano, Florencia; Sánchez Casaccia, María de la Paz; Carbajal de la Fuente, Ana Laura; Where you live shapes who you are: morphological changes in urban Triatoma infestans; Frontiers Media; Frontiers in Insect Science; 5; 6-2025; 1-132673-8600CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.frontiersin.org/articles/10.3389/finsc.2025.1593921/fullinfo:eu-repo/semantics/altIdentifier/doi/10.3389/finsc.2025.1593921info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:33:54Zoai:ri.conicet.gov.ar:11336/265575instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:33:55.131CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Where you live shapes who you are: morphological changes in urban Triatoma infestans
title Where you live shapes who you are: morphological changes in urban Triatoma infestans
spellingShingle Where you live shapes who you are: morphological changes in urban Triatoma infestans
Piccinali, Romina Valeria
TRIATOMINES
URBANIZATION
GEOMETRIC MORPHOMETRIC
ARGENTINA
title_short Where you live shapes who you are: morphological changes in urban Triatoma infestans
title_full Where you live shapes who you are: morphological changes in urban Triatoma infestans
title_fullStr Where you live shapes who you are: morphological changes in urban Triatoma infestans
title_full_unstemmed Where you live shapes who you are: morphological changes in urban Triatoma infestans
title_sort Where you live shapes who you are: morphological changes in urban Triatoma infestans
dc.creator.none.fl_str_mv Piccinali, Romina Valeria
Nattero, Julieta
Cano, Florencia
Sánchez Casaccia, María de la Paz
Carbajal de la Fuente, Ana Laura
author Piccinali, Romina Valeria
author_facet Piccinali, Romina Valeria
Nattero, Julieta
Cano, Florencia
Sánchez Casaccia, María de la Paz
Carbajal de la Fuente, Ana Laura
author_role author
author2 Nattero, Julieta
Cano, Florencia
Sánchez Casaccia, María de la Paz
Carbajal de la Fuente, Ana Laura
author2_role author
author
author
author
dc.subject.none.fl_str_mv TRIATOMINES
URBANIZATION
GEOMETRIC MORPHOMETRIC
ARGENTINA
topic TRIATOMINES
URBANIZATION
GEOMETRIC MORPHOMETRIC
ARGENTINA
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Introduction: Urbanization has transformed landscapes, driving ecological and morphological changes in insects. Chagas, traditionally a multidimensional rural problem, is increasingly reported in urban areas. Triatoma infestans, the primary vector of Chagas disease in the Southern Cone, has been reported in urban centers of San Juan, Argentina, for decades. Using morphometric and colorimetric analyses, we assess how urbanization influences the morphology and coloration of T. infestans.Materials and Methods: A total of 105 adults from five urban and one rural population of San Juan were analyzed.Wings, pronota, heads, and legs were measured and compared between populations and sexes. Principal Component and Canonical Variate Analyses were performed to assess shape variations. Kruskal-Wallis and Wilcoxon tests, and linear models examined size differences. Colorimetric analyses searched for wing and connexivum color differences between individuals.Results: Multivariate analyses revealed significant morphological differentiation of wing, pronotum, and head shapes, primarily distinguishing the rural Valle Fértil from urban populations. Centroid size analyses indicated that rural individuals exhibited larger body structures, a pattern generally consistent across sexes. Furthermore, leg morphology also varied, with Valle Fértil insects possessing greater femur length and width compared to their urban counterparts. Nosignificant color differences were found across populations or sexes.Discussion: Urban T. infestans exhibit size reductions, aligning with Schofield’s simplification hypothesis and possibly influenced by the Urban Heat Island effect. Shape changes, more pronounced in wings and pronota, suggest other influences beyond the rural-urban gradient, potentially including developmental plasticity, flight demands, and genetic drift. These findingsunderscore the need for urban-specific Chagas disease control strategies and further research on the evolutionary dynamics of T. infestans in urban environments.
Fil: Piccinali, Romina Valeria. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina
Fil: Nattero, Julieta. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina
Fil: Cano, Florencia. No especifíca;
Fil: Sánchez Casaccia, María de la Paz. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Dirección Nacional de Institutos de Investigación. Administración Nacional de Laboratorios e Institutos de Salud. Centro Nacional de Diagnóstico e Investigaciones Endemo-epidémicas; Argentina
Fil: Carbajal de la Fuente, Ana Laura. Dirección Nacional de Institutos de Investigación. Administración Nacional de Laboratorios e Institutos de Salud. Centro Nacional de Diagnóstico e Investigaciones Endemo-epidémicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description Introduction: Urbanization has transformed landscapes, driving ecological and morphological changes in insects. Chagas, traditionally a multidimensional rural problem, is increasingly reported in urban areas. Triatoma infestans, the primary vector of Chagas disease in the Southern Cone, has been reported in urban centers of San Juan, Argentina, for decades. Using morphometric and colorimetric analyses, we assess how urbanization influences the morphology and coloration of T. infestans.Materials and Methods: A total of 105 adults from five urban and one rural population of San Juan were analyzed.Wings, pronota, heads, and legs were measured and compared between populations and sexes. Principal Component and Canonical Variate Analyses were performed to assess shape variations. Kruskal-Wallis and Wilcoxon tests, and linear models examined size differences. Colorimetric analyses searched for wing and connexivum color differences between individuals.Results: Multivariate analyses revealed significant morphological differentiation of wing, pronotum, and head shapes, primarily distinguishing the rural Valle Fértil from urban populations. Centroid size analyses indicated that rural individuals exhibited larger body structures, a pattern generally consistent across sexes. Furthermore, leg morphology also varied, with Valle Fértil insects possessing greater femur length and width compared to their urban counterparts. Nosignificant color differences were found across populations or sexes.Discussion: Urban T. infestans exhibit size reductions, aligning with Schofield’s simplification hypothesis and possibly influenced by the Urban Heat Island effect. Shape changes, more pronounced in wings and pronota, suggest other influences beyond the rural-urban gradient, potentially including developmental plasticity, flight demands, and genetic drift. These findingsunderscore the need for urban-specific Chagas disease control strategies and further research on the evolutionary dynamics of T. infestans in urban environments.
publishDate 2025
dc.date.none.fl_str_mv 2025-06
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/265575
Piccinali, Romina Valeria; Nattero, Julieta; Cano, Florencia; Sánchez Casaccia, María de la Paz; Carbajal de la Fuente, Ana Laura; Where you live shapes who you are: morphological changes in urban Triatoma infestans; Frontiers Media; Frontiers in Insect Science; 5; 6-2025; 1-13
2673-8600
CONICET Digital
CONICET
url http://hdl.handle.net/11336/265575
identifier_str_mv Piccinali, Romina Valeria; Nattero, Julieta; Cano, Florencia; Sánchez Casaccia, María de la Paz; Carbajal de la Fuente, Ana Laura; Where you live shapes who you are: morphological changes in urban Triatoma infestans; Frontiers Media; Frontiers in Insect Science; 5; 6-2025; 1-13
2673-8600
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.frontiersin.org/articles/10.3389/finsc.2025.1593921/full
info:eu-repo/semantics/altIdentifier/doi/10.3389/finsc.2025.1593921
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Frontiers Media
publisher.none.fl_str_mv Frontiers Media
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
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instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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