A case of resistance of Rhipicephalus microplus (Acari: Ixodidae) to fipronil detected in field trials in the east of Santiago del Estero, Argentina

The resistance of a population of Rhipicephalus  microplus (Acari: Ixodidae) to fipronil 1% (ECTOLINE®) in the east of Santiago del Estero, Argentina, is described in this work. The trials were performed as replicates in two establishments: “Establishment A” and “Establishment B”. The diffe...

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Autores principales: NAVA, Santiago, MOREL, Nicolás, MANGOLD, Atilio J., GUGLIELMONE, Alberto A.
Formato: Artículo revista
Lenguaje:Español
Publicado: Universidad Nacional del Litoral 2018
Materias:
ticks
Boophilus
fipronil
garrapatas
Acceso en línea:https://bibliotecavirtual.unl.edu.ar/publicaciones/index.php/FAVEveterinaria/article/view/7158
Aporte de:
Biblioteca Virtual - Publicaciones (UNL) de Universidad Nacional del Litoral
id I26-R133-article-7158
record_format ojs
spelling I26-R133-article-71582019-05-24T11:50:45Z A case of resistance of Rhipicephalus microplus (Acari: Ixodidae) to fipronil detected in field trials in the east of Santiago del Estero, Argentina Un caso de resistencia de Rhipicephalus microplus (Acari: Ixodidae) al fipronil detectado en pruebas de campo en el este de Santiago del Estero, Argentina NAVA, Santiago MOREL, Nicolás MANGOLD, Atilio J. GUGLIELMONE, Alberto A. ticks Boophilus fipronil garrapatas Boophilus fipronil The resistance of a population of Rhipicephalus  microplus (Acari: Ixodidae) to fipronil 1% (ECTOLINE®) in the east of Santiago del Estero, Argentina, is described in this work. The trials were performed as replicates in two establishments: “Establishment A” and “Establishment B”. The differences in the level of tick infestation between treated and control groups in the Establishment A were not significant. The efficacy percentage ranged from 27.3% to 69.3%. Contrarily, the differences between treated and control groups in the Establishment B were significant, with efficacy percentage increasing from 87.6% (day 2 post-treatment) to 95.4% (day 7 post-treatment). The eclosion rates of the eggs produced by the engorged females collected in both treated and control groups in Establishment A were similar.  The application of fipronil 1% in the Establishment B had an efficacy almost absolute, because even though the therapeutic efficacy did not reach 100%, the reproductive viability of the engorged females collected on the treated cattle was null. The results of this work constitute the first published record of a population of R. microplus resistant to fipronil 1% under field conditions in Argentina. En este trabajo se describe la resistencia de una población Rhipicephalus  microplus resistente al fipronil 1% (ECTOLINE®) en condiciones de  campo en el este de Santiago del Estero, Argentina. Las pruebas fueron realizadas a modo de réplicas  en dos establecimientos: “Establecimiento A” y “Establecimiento B”. En el Establecimiento A las diferencias en los niveles de  infestación con garrapatas entre los grupos tratado y control nunca fueron estadísticamente significativas. Los porcentajes de eficacia oscilaron entre 27,3% y 69,3%. En el Establecimiento B las diferencias entre los grupos tratado y control fueron significativas, con porcentajes de eficacia aumentando de 87,6% el día 2 post-tratamiento a 95,4% el día 7 post-tratamiento. Las tasas de eclosión de los huevos originados de las teleóginas colectadas de los grupos tratados y control en el Establecimiento A fueron similares. La aplicación de fipronil 1% en el Establecimiento B tuvo una eficacia global prácticamente absoluta, porque si bien la eficacia terapéutica no alcanzó el 100%, la viabilidad reproductiva de las teleóginas obtenidas de los bovinos tratados fue nula. Los resultados del presente trabajo constituyen el primer registro publicado de una población de R. microplus resistente al fipronil 1% en condiciones de campo en Argentina. Universidad Nacional del Litoral 2018-03-05 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo original Original article application/pdf https://bibliotecavirtual.unl.edu.ar/publicaciones/index.php/FAVEveterinaria/article/view/7158 10.14409/favecv.v17i1.7158 FAVE Sección Ciencias Veterinarias; Vol. 17 Núm. 1 (2018): FAVE Sección Ciencias Veterinarias; 1-5 FAVE Sección Ciencias Veterinarias; Vol. 17 No. 1 (2018): FAVE Sección Ciencias Veterinarias; 1-5 FAVE Sección Ciencias Veterinarias; v. 17 n. 1 (2018): FAVE Sección Ciencias Veterinarias; 1-5 2362-5589 1666-938X 10.14409/favecv.v17i1 spa https://bibliotecavirtual.unl.edu.ar/publicaciones/index.php/FAVEveterinaria/article/view/7158/10370 Derechos de autor 2018 Santiago NAVA, Nicolás MOREL, Atilio J. MANGOLD, Alberto A. Gulgielmone
institution Universidad Nacional del Litoral
institution_str I-26
repository_str R-133
container_title_str Biblioteca Virtual - Publicaciones (UNL)
language Español
format Artículo revista
topic ticks
Boophilus
fipronil
garrapatas
Boophilus
fipronil
spellingShingle ticks
Boophilus
fipronil
garrapatas
Boophilus
fipronil
NAVA, Santiago
MOREL, Nicolás
MANGOLD, Atilio J.
GUGLIELMONE, Alberto A.
A case of resistance of Rhipicephalus microplus (Acari: Ixodidae) to fipronil detected in field trials in the east of Santiago del Estero, Argentina
topic_facet ticks
Boophilus
fipronil
garrapatas
Boophilus
fipronil
author NAVA, Santiago
MOREL, Nicolás
MANGOLD, Atilio J.
GUGLIELMONE, Alberto A.
author_facet NAVA, Santiago
MOREL, Nicolás
MANGOLD, Atilio J.
GUGLIELMONE, Alberto A.
author_sort NAVA, Santiago
title A case of resistance of Rhipicephalus microplus (Acari: Ixodidae) to fipronil detected in field trials in the east of Santiago del Estero, Argentina
title_short A case of resistance of Rhipicephalus microplus (Acari: Ixodidae) to fipronil detected in field trials in the east of Santiago del Estero, Argentina
title_full A case of resistance of Rhipicephalus microplus (Acari: Ixodidae) to fipronil detected in field trials in the east of Santiago del Estero, Argentina
title_fullStr A case of resistance of Rhipicephalus microplus (Acari: Ixodidae) to fipronil detected in field trials in the east of Santiago del Estero, Argentina
title_full_unstemmed A case of resistance of Rhipicephalus microplus (Acari: Ixodidae) to fipronil detected in field trials in the east of Santiago del Estero, Argentina
title_sort case of resistance of rhipicephalus microplus (acari: ixodidae) to fipronil detected in field trials in the east of santiago del estero, argentina
description The resistance of a population of Rhipicephalus  microplus (Acari: Ixodidae) to fipronil 1% (ECTOLINE®) in the east of Santiago del Estero, Argentina, is described in this work. The trials were performed as replicates in two establishments: “Establishment A” and “Establishment B”. The differences in the level of tick infestation between treated and control groups in the Establishment A were not significant. The efficacy percentage ranged from 27.3% to 69.3%. Contrarily, the differences between treated and control groups in the Establishment B were significant, with efficacy percentage increasing from 87.6% (day 2 post-treatment) to 95.4% (day 7 post-treatment). The eclosion rates of the eggs produced by the engorged females collected in both treated and control groups in Establishment A were similar.  The application of fipronil 1% in the Establishment B had an efficacy almost absolute, because even though the therapeutic efficacy did not reach 100%, the reproductive viability of the engorged females collected on the treated cattle was null. The results of this work constitute the first published record of a population of R. microplus resistant to fipronil 1% under field conditions in Argentina.
publisher Universidad Nacional del Litoral
publishDate 2018
url https://bibliotecavirtual.unl.edu.ar/publicaciones/index.php/FAVEveterinaria/article/view/7158
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first_indexed 2023-07-05T23:06:57Z
last_indexed 2023-07-05T23:06:57Z
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