Relative Contribution of Monooxygenase and Esterase to Pyrethroid Resistance in Triatoma infestans (Hemiptera: Reduviidae) from Argentina and Bolivia
- Autores
- Santo Orihuela, Pablo Luis; Vassena, Claudia Viviana; Zerba, Eduardo Nicolás; Picollo, Maria Ines
- Año de publicación
- 2008
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Recently, high resistance to pyrethroid insecticides has been associated with ineffective field treatments against Triatoma infestans (Klug) in northern Argentina. Samples were collected from two areas in Argentina (Salta and La Rioja) and one in Bolivia (Yacuiba), and were subjected to toxicological and biochemical assays. All populations were resistant to deltamethrin but they showed different profiles to non-pyrethroid insecticides. Salta population showed high resistance ratios (RR) to deltamethrin and only slight differences in the susceptibility to fenitrothion and fipronil compared to the reference strain. Otherwise, La Rioja population showed a lower RR to deltamethrin and no resistance to fenitrothion or fipronil. Finally, Yacuiba population had high a RR to deltamethrin but was susceptibility to fenitrothion and fipronil. In several cases deltamethrin resistant populations had higher susceptibility to bendiocarb than the reference strain. Measured activity of P450 mono-oxygenase in individual insects (based on ethoxycoumarine-O-de-ethylase), tended to be higher in the deltamethrin resistant populations but the differences were not statistically significant. Activity of specific esterases determined by the hydrolysis of 7-coumaryl permethrate, demonstrated an increase in the percentage of insects with higher esterase activity in Salta and La Rioja populations. Unexpectedly, Yacuiba population showed lower pyrethroid esterase activity than the reference strain. The different pyrethroid resistance patterns found in T. infestans from three geographical regions within Argentina and in Bolivia, suggests that enzyme based pyrethroid resistance in this species has multiple origins. Nevertheless, as nerve insensitivity (related to the presence of the kdr gene) is also an important mechanism related to pyrethroid resistance, further studies on the kdr gene should be carried to clarify the relative contribution of each pyrethroid associated mechanism in deltamethrin resistant populations of T. infestans Keywords: Triatoma infestans, insecticide resistance, resistance ratios, mono-oxygenases, pyrethroid esterases.
Fil: Santo Orihuela, Pablo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas para la Defensa. Centro de Investigación de Plagas e Insecticidas; Argentina
Fil: Vassena, Claudia Viviana. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas para la Defensa. Centro de Investigación de Plagas e Insecticidas; Argentina
Fil: Zerba, Eduardo Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas para la Defensa. Centro de Investigación de Plagas e Insecticidas; Argentina
Fil: Picollo, Maria Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas para la Defensa. Centro de Investigación de Plagas e Insecticidas; Argentina - Materia
- Monooxygenase
- Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/82765
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Relative Contribution of Monooxygenase and Esterase to Pyrethroid Resistance in Triatoma infestans (Hemiptera: Reduviidae) from Argentina and BoliviaSanto Orihuela, Pablo LuisVassena, Claudia VivianaZerba, Eduardo NicolásPicollo, Maria InesMonooxygenasehttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Recently, high resistance to pyrethroid insecticides has been associated with ineffective field treatments against Triatoma infestans (Klug) in northern Argentina. Samples were collected from two areas in Argentina (Salta and La Rioja) and one in Bolivia (Yacuiba), and were subjected to toxicological and biochemical assays. All populations were resistant to deltamethrin but they showed different profiles to non-pyrethroid insecticides. Salta population showed high resistance ratios (RR) to deltamethrin and only slight differences in the susceptibility to fenitrothion and fipronil compared to the reference strain. Otherwise, La Rioja population showed a lower RR to deltamethrin and no resistance to fenitrothion or fipronil. Finally, Yacuiba population had high a RR to deltamethrin but was susceptibility to fenitrothion and fipronil. In several cases deltamethrin resistant populations had higher susceptibility to bendiocarb than the reference strain. Measured activity of P450 mono-oxygenase in individual insects (based on ethoxycoumarine-O-de-ethylase), tended to be higher in the deltamethrin resistant populations but the differences were not statistically significant. Activity of specific esterases determined by the hydrolysis of 7-coumaryl permethrate, demonstrated an increase in the percentage of insects with higher esterase activity in Salta and La Rioja populations. Unexpectedly, Yacuiba population showed lower pyrethroid esterase activity than the reference strain. The different pyrethroid resistance patterns found in T. infestans from three geographical regions within Argentina and in Bolivia, suggests that enzyme based pyrethroid resistance in this species has multiple origins. Nevertheless, as nerve insensitivity (related to the presence of the kdr gene) is also an important mechanism related to pyrethroid resistance, further studies on the kdr gene should be carried to clarify the relative contribution of each pyrethroid associated mechanism in deltamethrin resistant populations of T. infestans Keywords: Triatoma infestans, insecticide resistance, resistance ratios, mono-oxygenases, pyrethroid esterases.Fil: Santo Orihuela, Pablo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas para la Defensa. Centro de Investigación de Plagas e Insecticidas; ArgentinaFil: Vassena, Claudia Viviana. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas para la Defensa. Centro de Investigación de Plagas e Insecticidas; ArgentinaFil: Zerba, Eduardo Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas para la Defensa. Centro de Investigación de Plagas e Insecticidas; ArgentinaFil: Picollo, Maria Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas para la Defensa. Centro de Investigación de Plagas e Insecticidas; ArgentinaEntomological Society of America2008-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/82765Santo Orihuela, Pablo Luis; Vassena, Claudia Viviana; Zerba, Eduardo Nicolás; Picollo, Maria Ines; Relative Contribution of Monooxygenase and Esterase to Pyrethroid Resistance in Triatoma infestans (Hemiptera: Reduviidae) from Argentina and Bolivia; Entomological Society of America; Journal of Medical Entomology; 45; 2; 3-2008; 298-3060022-2585CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1093/jmedent/45.2.298info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/jme/article/45/2/298/865900info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:26:02Zoai:ri.conicet.gov.ar:11336/82765instacron: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:34982025-09-29 10:26:02.531CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Relative Contribution of Monooxygenase and Esterase to Pyrethroid Resistance in Triatoma infestans (Hemiptera: Reduviidae) from Argentina and Bolivia |
title |
Relative Contribution of Monooxygenase and Esterase to Pyrethroid Resistance in Triatoma infestans (Hemiptera: Reduviidae) from Argentina and Bolivia |
spellingShingle |
Relative Contribution of Monooxygenase and Esterase to Pyrethroid Resistance in Triatoma infestans (Hemiptera: Reduviidae) from Argentina and Bolivia Santo Orihuela, Pablo Luis Monooxygenase |
title_short |
Relative Contribution of Monooxygenase and Esterase to Pyrethroid Resistance in Triatoma infestans (Hemiptera: Reduviidae) from Argentina and Bolivia |
title_full |
Relative Contribution of Monooxygenase and Esterase to Pyrethroid Resistance in Triatoma infestans (Hemiptera: Reduviidae) from Argentina and Bolivia |
title_fullStr |
Relative Contribution of Monooxygenase and Esterase to Pyrethroid Resistance in Triatoma infestans (Hemiptera: Reduviidae) from Argentina and Bolivia |
title_full_unstemmed |
Relative Contribution of Monooxygenase and Esterase to Pyrethroid Resistance in Triatoma infestans (Hemiptera: Reduviidae) from Argentina and Bolivia |
title_sort |
Relative Contribution of Monooxygenase and Esterase to Pyrethroid Resistance in Triatoma infestans (Hemiptera: Reduviidae) from Argentina and Bolivia |
dc.creator.none.fl_str_mv |
Santo Orihuela, Pablo Luis Vassena, Claudia Viviana Zerba, Eduardo Nicolás Picollo, Maria Ines |
author |
Santo Orihuela, Pablo Luis |
author_facet |
Santo Orihuela, Pablo Luis Vassena, Claudia Viviana Zerba, Eduardo Nicolás Picollo, Maria Ines |
author_role |
author |
author2 |
Vassena, Claudia Viviana Zerba, Eduardo Nicolás Picollo, Maria Ines |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
Monooxygenase |
topic |
Monooxygenase |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Recently, high resistance to pyrethroid insecticides has been associated with ineffective field treatments against Triatoma infestans (Klug) in northern Argentina. Samples were collected from two areas in Argentina (Salta and La Rioja) and one in Bolivia (Yacuiba), and were subjected to toxicological and biochemical assays. All populations were resistant to deltamethrin but they showed different profiles to non-pyrethroid insecticides. Salta population showed high resistance ratios (RR) to deltamethrin and only slight differences in the susceptibility to fenitrothion and fipronil compared to the reference strain. Otherwise, La Rioja population showed a lower RR to deltamethrin and no resistance to fenitrothion or fipronil. Finally, Yacuiba population had high a RR to deltamethrin but was susceptibility to fenitrothion and fipronil. In several cases deltamethrin resistant populations had higher susceptibility to bendiocarb than the reference strain. Measured activity of P450 mono-oxygenase in individual insects (based on ethoxycoumarine-O-de-ethylase), tended to be higher in the deltamethrin resistant populations but the differences were not statistically significant. Activity of specific esterases determined by the hydrolysis of 7-coumaryl permethrate, demonstrated an increase in the percentage of insects with higher esterase activity in Salta and La Rioja populations. Unexpectedly, Yacuiba population showed lower pyrethroid esterase activity than the reference strain. The different pyrethroid resistance patterns found in T. infestans from three geographical regions within Argentina and in Bolivia, suggests that enzyme based pyrethroid resistance in this species has multiple origins. Nevertheless, as nerve insensitivity (related to the presence of the kdr gene) is also an important mechanism related to pyrethroid resistance, further studies on the kdr gene should be carried to clarify the relative contribution of each pyrethroid associated mechanism in deltamethrin resistant populations of T. infestans Keywords: Triatoma infestans, insecticide resistance, resistance ratios, mono-oxygenases, pyrethroid esterases. Fil: Santo Orihuela, Pablo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas para la Defensa. Centro de Investigación de Plagas e Insecticidas; Argentina Fil: Vassena, Claudia Viviana. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas para la Defensa. Centro de Investigación de Plagas e Insecticidas; Argentina Fil: Zerba, Eduardo Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas para la Defensa. Centro de Investigación de Plagas e Insecticidas; Argentina Fil: Picollo, Maria Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas para la Defensa. Centro de Investigación de Plagas e Insecticidas; Argentina |
description |
Recently, high resistance to pyrethroid insecticides has been associated with ineffective field treatments against Triatoma infestans (Klug) in northern Argentina. Samples were collected from two areas in Argentina (Salta and La Rioja) and one in Bolivia (Yacuiba), and were subjected to toxicological and biochemical assays. All populations were resistant to deltamethrin but they showed different profiles to non-pyrethroid insecticides. Salta population showed high resistance ratios (RR) to deltamethrin and only slight differences in the susceptibility to fenitrothion and fipronil compared to the reference strain. Otherwise, La Rioja population showed a lower RR to deltamethrin and no resistance to fenitrothion or fipronil. Finally, Yacuiba population had high a RR to deltamethrin but was susceptibility to fenitrothion and fipronil. In several cases deltamethrin resistant populations had higher susceptibility to bendiocarb than the reference strain. Measured activity of P450 mono-oxygenase in individual insects (based on ethoxycoumarine-O-de-ethylase), tended to be higher in the deltamethrin resistant populations but the differences were not statistically significant. Activity of specific esterases determined by the hydrolysis of 7-coumaryl permethrate, demonstrated an increase in the percentage of insects with higher esterase activity in Salta and La Rioja populations. Unexpectedly, Yacuiba population showed lower pyrethroid esterase activity than the reference strain. The different pyrethroid resistance patterns found in T. infestans from three geographical regions within Argentina and in Bolivia, suggests that enzyme based pyrethroid resistance in this species has multiple origins. Nevertheless, as nerve insensitivity (related to the presence of the kdr gene) is also an important mechanism related to pyrethroid resistance, further studies on the kdr gene should be carried to clarify the relative contribution of each pyrethroid associated mechanism in deltamethrin resistant populations of T. infestans Keywords: Triatoma infestans, insecticide resistance, resistance ratios, mono-oxygenases, pyrethroid esterases. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-03 |
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/11336/82765 Santo Orihuela, Pablo Luis; Vassena, Claudia Viviana; Zerba, Eduardo Nicolás; Picollo, Maria Ines; Relative Contribution of Monooxygenase and Esterase to Pyrethroid Resistance in Triatoma infestans (Hemiptera: Reduviidae) from Argentina and Bolivia; Entomological Society of America; Journal of Medical Entomology; 45; 2; 3-2008; 298-306 0022-2585 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/82765 |
identifier_str_mv |
Santo Orihuela, Pablo Luis; Vassena, Claudia Viviana; Zerba, Eduardo Nicolás; Picollo, Maria Ines; Relative Contribution of Monooxygenase and Esterase to Pyrethroid Resistance in Triatoma infestans (Hemiptera: Reduviidae) from Argentina and Bolivia; Entomological Society of America; Journal of Medical Entomology; 45; 2; 3-2008; 298-306 0022-2585 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1093/jmedent/45.2.298 info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/jme/article/45/2/298/865900 |
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 application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Entomological Society of America |
publisher.none.fl_str_mv |
Entomological Society of America |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
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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1844614260613709824 |
score |
13.070432 |