Evaluation of different chemical groups used for the control of Rhipicephalus microplus against ticks from the Amblyomma cajennense complex parasitizing cattle

Autores
Sebastian, Patrick; Mazzucco Panizza, Matilde Nahimé; Tarragona, Evelina Luisa; Novoa, María Belen; Sarli, Macarena; Nava, Santiago
Año de publicación
2026
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The objective of this study was to evaluate the efficacy of different chemical groups, approved as acaricide to Rhipicephalus microplus, against ticks from the Amblyomma cajennense complex parasitizing cattle under laboratory and field conditions. Laboratory trials (LT) used calves artificially infested with Amblyomma tonelliae, while field trials (FT) involved cattle naturally infested with Amblyomma sculptum. Bovines were treated with commercial formulations of amitraz (only FT), doramectin, deltamethrin, fipronil, ivermectin, or a combination of fipronil and ivermectin, using doses recommended for Rhipicephalus microplus control. In the LT, parameters such as attachment, engorgement, feeding period, and reproductive indices were recorded. In the FT, total tick counts, presence of engorged females, infestation prevalence, and efficacy percentage (EP) were assessed. Ivermectin reduced the viability and fertility of A. tonelliae under laboratory conditions but achieved EPs below 60% against A. sculptum in the field. Deltamethrin and doramectin showed low and inconsistent efficacy in both trials. Fipronil completely inhibited engorgement in LT and achieved 59–89% efficacy in FT. The pour-on formulation combining fipronil and ivermectin produced 85–87% efficacy with a rapid knock-down effect. Amitraz was the only formulation providing complete control, reaching 100% efficacy in the FT. Fipronil-based products and particularly amitraz provided the highest levels of control, although the expected residual efficacy of these formulations is low. As a complement to this study, further research to evaluate how different schemes of strategic or sequential application of chemical acaricides to cattle in an annual plan of control could affect the population abundance of Amblyomma species are needed.
EEA Rafaela
Fil: Sebastian, Patrick. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela. Instituto de Investigación de la Cadena Láctea (IDICAL); Argentina
Fil: Sebastian, Patrick. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigación de la Cadena Láctea (IDICAL); Argentina
Fil: Mazzucco Panizza, Matilde Nahimé. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela. Instituto de Investigación de la Cadena Láctea (IDICAL); Argentina
Fil: Mazzucco Panizza, Matilde Nahimé. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigación de la Cadena Láctea (IDICAL); Argentina
Fil: Tarragona, Evelina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela. Instituto de Investigación de la Cadena Láctea (IDICAL); Argentina
Fil: Tarragona, Evelina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigación de la Cadena Láctea (IDICAL); Argentina
Fil: Novoa, María Belen. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela. Instituto de Investigación de la Cadena Láctea (IDICAL); Argentina
Fil: Novoa, María Belen.Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigación de la Cadena Láctea (IDICAL); Argentina
Fil: Sarli, Macarena. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela. Instituto de Investigación de la Cadena Láctea (IDICAL); Argentina
Fil: Sarli, Macarena. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigación de la Cadena Láctea (IDICAL); Argentina
Fil: Nava, Santiago. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela. Instituto de Investigación de la Cadena Láctea (IDICAL); Argentina
Fil: Nava, Santiago. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigación de la Cadena Láctea (IDICAL); Argentina
Fuente
Veterinary Parasitology 344 : 110733. (May 2026)
Materia
Garrapata
Ganado Bovino
Control de Plagas
Control Químico de Plagas
Ticks
Rhipicephalus
Amblyomma cajennense
Cattle
Pest Control
Chemical Pest Control
Rhipicephalus microplus
Nivel de accesibilidad
acceso restringido
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/25519
Acceder
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oai_identifier_str oai:localhost:20.500.12123/25519
network_acronym_str INTADig
repository_id_str l
network_name_str INTA Digital (INTA)
spelling Evaluation of different chemical groups used for the control of Rhipicephalus microplus against ticks from the Amblyomma cajennense complex parasitizing cattleSebastian, PatrickMazzucco Panizza, Matilde NahiméTarragona, Evelina LuisaNovoa, María BelenSarli, MacarenaNava, SantiagoGarrapataGanado BovinoControl de PlagasControl Químico de PlagasTicksRhipicephalusAmblyomma cajennenseCattlePest ControlChemical Pest ControlRhipicephalus microplusThe objective of this study was to evaluate the efficacy of different chemical groups, approved as acaricide to Rhipicephalus microplus, against ticks from the Amblyomma cajennense complex parasitizing cattle under laboratory and field conditions. Laboratory trials (LT) used calves artificially infested with Amblyomma tonelliae, while field trials (FT) involved cattle naturally infested with Amblyomma sculptum. Bovines were treated with commercial formulations of amitraz (only FT), doramectin, deltamethrin, fipronil, ivermectin, or a combination of fipronil and ivermectin, using doses recommended for Rhipicephalus microplus control. In the LT, parameters such as attachment, engorgement, feeding period, and reproductive indices were recorded. In the FT, total tick counts, presence of engorged females, infestation prevalence, and efficacy percentage (EP) were assessed. Ivermectin reduced the viability and fertility of A. tonelliae under laboratory conditions but achieved EPs below 60% against A. sculptum in the field. Deltamethrin and doramectin showed low and inconsistent efficacy in both trials. Fipronil completely inhibited engorgement in LT and achieved 59–89% efficacy in FT. The pour-on formulation combining fipronil and ivermectin produced 85–87% efficacy with a rapid knock-down effect. Amitraz was the only formulation providing complete control, reaching 100% efficacy in the FT. Fipronil-based products and particularly amitraz provided the highest levels of control, although the expected residual efficacy of these formulations is low. As a complement to this study, further research to evaluate how different schemes of strategic or sequential application of chemical acaricides to cattle in an annual plan of control could affect the population abundance of Amblyomma species are needed.EEA RafaelaFil: Sebastian, Patrick. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela. Instituto de Investigación de la Cadena Láctea (IDICAL); ArgentinaFil: Sebastian, Patrick. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigación de la Cadena Láctea (IDICAL); ArgentinaFil: Mazzucco Panizza, Matilde Nahimé. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela. Instituto de Investigación de la Cadena Láctea (IDICAL); ArgentinaFil: Mazzucco Panizza, Matilde Nahimé. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigación de la Cadena Láctea (IDICAL); ArgentinaFil: Tarragona, Evelina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela. Instituto de Investigación de la Cadena Láctea (IDICAL); ArgentinaFil: Tarragona, Evelina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigación de la Cadena Láctea (IDICAL); ArgentinaFil: Novoa, María Belen. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela. Instituto de Investigación de la Cadena Láctea (IDICAL); ArgentinaFil: Novoa, María Belen.Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigación de la Cadena Láctea (IDICAL); ArgentinaFil: Sarli, Macarena. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela. Instituto de Investigación de la Cadena Láctea (IDICAL); ArgentinaFil: Sarli, Macarena. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigación de la Cadena Láctea (IDICAL); ArgentinaFil: Nava, Santiago. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela. Instituto de Investigación de la Cadena Láctea (IDICAL); ArgentinaFil: Nava, Santiago. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigación de la Cadena Láctea (IDICAL); ArgentinaElsevier2026-03-19T10:57:47Z2026-03-19T10:57:47Z2026-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/25519https://www.sciencedirect.com/science/article/abs/pii/S030440172600049X0304-40171873-2550https://doi.org/10.1016/j.vetpar.2026.110733Veterinary Parasitology 344 : 110733. (May 2026)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/restrictedAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)2026-03-26T11:25:30Zoai:localhost:20.500.12123/25519instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2026-03-26 11:25:31.204INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Evaluation of different chemical groups used for the control of Rhipicephalus microplus against ticks from the Amblyomma cajennense complex parasitizing cattle
title Evaluation of different chemical groups used for the control of Rhipicephalus microplus against ticks from the Amblyomma cajennense complex parasitizing cattle
spellingShingle Evaluation of different chemical groups used for the control of Rhipicephalus microplus against ticks from the Amblyomma cajennense complex parasitizing cattle
Sebastian, Patrick
Garrapata
Ganado Bovino
Control de Plagas
Control Químico de Plagas
Ticks
Rhipicephalus
Amblyomma cajennense
Cattle
Pest Control
Chemical Pest Control
Rhipicephalus microplus
title_short Evaluation of different chemical groups used for the control of Rhipicephalus microplus against ticks from the Amblyomma cajennense complex parasitizing cattle
title_full Evaluation of different chemical groups used for the control of Rhipicephalus microplus against ticks from the Amblyomma cajennense complex parasitizing cattle
title_fullStr Evaluation of different chemical groups used for the control of Rhipicephalus microplus against ticks from the Amblyomma cajennense complex parasitizing cattle
title_full_unstemmed Evaluation of different chemical groups used for the control of Rhipicephalus microplus against ticks from the Amblyomma cajennense complex parasitizing cattle
title_sort Evaluation of different chemical groups used for the control of Rhipicephalus microplus against ticks from the Amblyomma cajennense complex parasitizing cattle
dc.creator.none.fl_str_mv Sebastian, Patrick
Mazzucco Panizza, Matilde Nahimé
Tarragona, Evelina Luisa
Novoa, María Belen
Sarli, Macarena
Nava, Santiago
author Sebastian, Patrick
author_facet Sebastian, Patrick
Mazzucco Panizza, Matilde Nahimé
Tarragona, Evelina Luisa
Novoa, María Belen
Sarli, Macarena
Nava, Santiago
author_role author
author2 Mazzucco Panizza, Matilde Nahimé
Tarragona, Evelina Luisa
Novoa, María Belen
Sarli, Macarena
Nava, Santiago
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Garrapata
Ganado Bovino
Control de Plagas
Control Químico de Plagas
Ticks
Rhipicephalus
Amblyomma cajennense
Cattle
Pest Control
Chemical Pest Control
Rhipicephalus microplus
topic Garrapata
Ganado Bovino
Control de Plagas
Control Químico de Plagas
Ticks
Rhipicephalus
Amblyomma cajennense
Cattle
Pest Control
Chemical Pest Control
Rhipicephalus microplus
dc.description.none.fl_txt_mv The objective of this study was to evaluate the efficacy of different chemical groups, approved as acaricide to Rhipicephalus microplus, against ticks from the Amblyomma cajennense complex parasitizing cattle under laboratory and field conditions. Laboratory trials (LT) used calves artificially infested with Amblyomma tonelliae, while field trials (FT) involved cattle naturally infested with Amblyomma sculptum. Bovines were treated with commercial formulations of amitraz (only FT), doramectin, deltamethrin, fipronil, ivermectin, or a combination of fipronil and ivermectin, using doses recommended for Rhipicephalus microplus control. In the LT, parameters such as attachment, engorgement, feeding period, and reproductive indices were recorded. In the FT, total tick counts, presence of engorged females, infestation prevalence, and efficacy percentage (EP) were assessed. Ivermectin reduced the viability and fertility of A. tonelliae under laboratory conditions but achieved EPs below 60% against A. sculptum in the field. Deltamethrin and doramectin showed low and inconsistent efficacy in both trials. Fipronil completely inhibited engorgement in LT and achieved 59–89% efficacy in FT. The pour-on formulation combining fipronil and ivermectin produced 85–87% efficacy with a rapid knock-down effect. Amitraz was the only formulation providing complete control, reaching 100% efficacy in the FT. Fipronil-based products and particularly amitraz provided the highest levels of control, although the expected residual efficacy of these formulations is low. As a complement to this study, further research to evaluate how different schemes of strategic or sequential application of chemical acaricides to cattle in an annual plan of control could affect the population abundance of Amblyomma species are needed.
EEA Rafaela
Fil: Sebastian, Patrick. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela. Instituto de Investigación de la Cadena Láctea (IDICAL); Argentina
Fil: Sebastian, Patrick. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigación de la Cadena Láctea (IDICAL); Argentina
Fil: Mazzucco Panizza, Matilde Nahimé. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela. Instituto de Investigación de la Cadena Láctea (IDICAL); Argentina
Fil: Mazzucco Panizza, Matilde Nahimé. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigación de la Cadena Láctea (IDICAL); Argentina
Fil: Tarragona, Evelina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela. Instituto de Investigación de la Cadena Láctea (IDICAL); Argentina
Fil: Tarragona, Evelina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigación de la Cadena Láctea (IDICAL); Argentina
Fil: Novoa, María Belen. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela. Instituto de Investigación de la Cadena Láctea (IDICAL); Argentina
Fil: Novoa, María Belen.Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigación de la Cadena Láctea (IDICAL); Argentina
Fil: Sarli, Macarena. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela. Instituto de Investigación de la Cadena Láctea (IDICAL); Argentina
Fil: Sarli, Macarena. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigación de la Cadena Láctea (IDICAL); Argentina
Fil: Nava, Santiago. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela. Instituto de Investigación de la Cadena Láctea (IDICAL); Argentina
Fil: Nava, Santiago. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigación de la Cadena Láctea (IDICAL); Argentina
description The objective of this study was to evaluate the efficacy of different chemical groups, approved as acaricide to Rhipicephalus microplus, against ticks from the Amblyomma cajennense complex parasitizing cattle under laboratory and field conditions. Laboratory trials (LT) used calves artificially infested with Amblyomma tonelliae, while field trials (FT) involved cattle naturally infested with Amblyomma sculptum. Bovines were treated with commercial formulations of amitraz (only FT), doramectin, deltamethrin, fipronil, ivermectin, or a combination of fipronil and ivermectin, using doses recommended for Rhipicephalus microplus control. In the LT, parameters such as attachment, engorgement, feeding period, and reproductive indices were recorded. In the FT, total tick counts, presence of engorged females, infestation prevalence, and efficacy percentage (EP) were assessed. Ivermectin reduced the viability and fertility of A. tonelliae under laboratory conditions but achieved EPs below 60% against A. sculptum in the field. Deltamethrin and doramectin showed low and inconsistent efficacy in both trials. Fipronil completely inhibited engorgement in LT and achieved 59–89% efficacy in FT. The pour-on formulation combining fipronil and ivermectin produced 85–87% efficacy with a rapid knock-down effect. Amitraz was the only formulation providing complete control, reaching 100% efficacy in the FT. Fipronil-based products and particularly amitraz provided the highest levels of control, although the expected residual efficacy of these formulations is low. As a complement to this study, further research to evaluate how different schemes of strategic or sequential application of chemical acaricides to cattle in an annual plan of control could affect the population abundance of Amblyomma species are needed.
publishDate 2026
dc.date.none.fl_str_mv 2026-03-19T10:57:47Z
2026-03-19T10:57:47Z
2026-05
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/20.500.12123/25519
https://www.sciencedirect.com/science/article/abs/pii/S030440172600049X
0304-4017
1873-2550
https://doi.org/10.1016/j.vetpar.2026.110733
url http://hdl.handle.net/20.500.12123/25519
https://www.sciencedirect.com/science/article/abs/pii/S030440172600049X
https://doi.org/10.1016/j.vetpar.2026.110733
identifier_str_mv 0304-4017
1873-2550
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/restrictedAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv restrictedAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv Veterinary Parasitology 344 : 110733. (May 2026)
reponame:INTA Digital (INTA)
instname:Instituto Nacional de Tecnología Agropecuaria
reponame_str INTA Digital (INTA)
collection INTA Digital (INTA)
instname_str Instituto Nacional de Tecnología Agropecuaria
repository.name.fl_str_mv INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria
repository.mail.fl_str_mv tripaldi.nicolas@inta.gob.ar
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score 12.977003

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