Potential of the insect growth regulator, fluazuron, in the control of Rhipicephalus sanguineus nymphs (Latreille, 1806) (Acari: Ixodidae): Determination of the LD95 and LD50
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.exppara.2012.02.023 http://hdl.handle.net/11449/20505 |
Resumo: | Conventional pesticides have suffered two main drawbacks: (a) broad spectrum of action and (b) selection of target species resistant to the different active ingredients. Thus compounds that are less harmful to the environment and to human health, more specific and that do not induce resistance need to be developed. One alternative are insect growth regulators, such as fluazuron. The present study examined the efficacy of fluazuron (active ingredient of the acaricide Acatak (R)) and the sensitivity of Rhipicephalus sanguineus nymphs exposed to different doses of this chemical, and determined the lethal doses of fluazuron: 95% - LD95 and 50% - LD50. Different doses of fluazuron were applied in duplicates on the dorsal region of hosts ("pour on"). Distilled water was used in the control group. on the first day after the treatment with fluazuron, hosts were artificially infested with R. sanguineus nymphs. After engorgement, nymphs were removed, placed on Petri dishes, identified, and maintained in BOD incubator for 15 days. Dead R. sanguineus nymphs after the treatment with 13 different doses of fluazuron were quantified and the LD95 was estimated to be 100 mg/kg and LD50, 19.544 mg/kg (12.478-22.636), with a confidence interval of 95%. Nymphs of R. sanguineus were sensitive to fluazuron at various levels, indicating that this insect growth regulator (IGR) may be used to control this parasite in this stage of its biological cycle, reducing the significant damage it causes. (C) 2012 Elsevier B.V. All rights reserved. |
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Repositório Institucional da UNESP |
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Potential of the insect growth regulator, fluazuron, in the control of Rhipicephalus sanguineus nymphs (Latreille, 1806) (Acari: Ixodidae): Determination of the LD95 and LD50FluazuronRhipicephalus sanguineusTickAcaricideBenzoylphenylureaConventional pesticides have suffered two main drawbacks: (a) broad spectrum of action and (b) selection of target species resistant to the different active ingredients. Thus compounds that are less harmful to the environment and to human health, more specific and that do not induce resistance need to be developed. One alternative are insect growth regulators, such as fluazuron. The present study examined the efficacy of fluazuron (active ingredient of the acaricide Acatak (R)) and the sensitivity of Rhipicephalus sanguineus nymphs exposed to different doses of this chemical, and determined the lethal doses of fluazuron: 95% - LD95 and 50% - LD50. Different doses of fluazuron were applied in duplicates on the dorsal region of hosts ("pour on"). Distilled water was used in the control group. on the first day after the treatment with fluazuron, hosts were artificially infested with R. sanguineus nymphs. After engorgement, nymphs were removed, placed on Petri dishes, identified, and maintained in BOD incubator for 15 days. Dead R. sanguineus nymphs after the treatment with 13 different doses of fluazuron were quantified and the LD95 was estimated to be 100 mg/kg and LD50, 19.544 mg/kg (12.478-22.636), with a confidence interval of 95%. Nymphs of R. sanguineus were sensitive to fluazuron at various levels, indicating that this insect growth regulator (IGR) may be used to control this parasite in this stage of its biological cycle, reducing the significant damage it causes. (C) 2012 Elsevier B.V. All rights reserved.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)São Paulo State Univ UNESP, Dept Biol, Inst Biol Sci, BR-13506900 Rio Claro, SP, BrazilSão Paulo State Univ UNESP, Dept Anim Pathol, Fac Agron & Vet Sci, BR-14884900 Jaboticabal, SP, BrazilSão Paulo State Univ UNESP, Dept Ecol, Inst Biosci, BR-13506900 Rio Claro, SP, BrazilSão Paulo State Univ UNESP, Dept Biol, Inst Biol Sci, BR-13506900 Rio Claro, SP, BrazilSão Paulo State Univ UNESP, Dept Anim Pathol, Fac Agron & Vet Sci, BR-14884900 Jaboticabal, SP, BrazilSão Paulo State Univ UNESP, Dept Ecol, Inst Biosci, BR-13506900 Rio Claro, SP, BrazilFAPESP: 10/50827-0Academic Press Inc. Elsevier B.V.Universidade Estadual Paulista (Unesp)de Oliveira, Patricia Rosa [UNESP]Calligaris, Izabela Braggiao [UNESP]Roma, Gislaine Cristina [UNESP]Bechara, Gervasio Henrique [UNESP]Pizano, Marcos Aparecido [UNESP]Camargo Mathias, Maria Lzabel [UNESP]2013-09-30T18:47:14Z2014-05-20T13:57:32Z2013-09-30T18:47:14Z2014-05-20T13:57:32Z2012-05-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article35-39application/pdfhttp://dx.doi.org/10.1016/j.exppara.2012.02.023Experimental Parasitology. San Diego: Academic Press Inc. Elsevier B.V., v. 131, n. 1, p. 35-39, 2012.0014-4894http://hdl.handle.net/11449/2050510.1016/j.exppara.2012.02.023WOS:000303956100006WOS000303956100006.pdf2833668898846212Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengExperimental Parasitology1.8210,635info:eu-repo/semantics/openAccess2023-12-15T06:16:31Zoai:repositorio.unesp.br:11449/20505Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-12-15T06:16:31Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Potential of the insect growth regulator, fluazuron, in the control of Rhipicephalus sanguineus nymphs (Latreille, 1806) (Acari: Ixodidae): Determination of the LD95 and LD50 |
title |
Potential of the insect growth regulator, fluazuron, in the control of Rhipicephalus sanguineus nymphs (Latreille, 1806) (Acari: Ixodidae): Determination of the LD95 and LD50 |
spellingShingle |
Potential of the insect growth regulator, fluazuron, in the control of Rhipicephalus sanguineus nymphs (Latreille, 1806) (Acari: Ixodidae): Determination of the LD95 and LD50 de Oliveira, Patricia Rosa [UNESP] Fluazuron Rhipicephalus sanguineus Tick Acaricide Benzoylphenylurea |
title_short |
Potential of the insect growth regulator, fluazuron, in the control of Rhipicephalus sanguineus nymphs (Latreille, 1806) (Acari: Ixodidae): Determination of the LD95 and LD50 |
title_full |
Potential of the insect growth regulator, fluazuron, in the control of Rhipicephalus sanguineus nymphs (Latreille, 1806) (Acari: Ixodidae): Determination of the LD95 and LD50 |
title_fullStr |
Potential of the insect growth regulator, fluazuron, in the control of Rhipicephalus sanguineus nymphs (Latreille, 1806) (Acari: Ixodidae): Determination of the LD95 and LD50 |
title_full_unstemmed |
Potential of the insect growth regulator, fluazuron, in the control of Rhipicephalus sanguineus nymphs (Latreille, 1806) (Acari: Ixodidae): Determination of the LD95 and LD50 |
title_sort |
Potential of the insect growth regulator, fluazuron, in the control of Rhipicephalus sanguineus nymphs (Latreille, 1806) (Acari: Ixodidae): Determination of the LD95 and LD50 |
author |
de Oliveira, Patricia Rosa [UNESP] |
author_facet |
de Oliveira, Patricia Rosa [UNESP] Calligaris, Izabela Braggiao [UNESP] Roma, Gislaine Cristina [UNESP] Bechara, Gervasio Henrique [UNESP] Pizano, Marcos Aparecido [UNESP] Camargo Mathias, Maria Lzabel [UNESP] |
author_role |
author |
author2 |
Calligaris, Izabela Braggiao [UNESP] Roma, Gislaine Cristina [UNESP] Bechara, Gervasio Henrique [UNESP] Pizano, Marcos Aparecido [UNESP] Camargo Mathias, Maria Lzabel [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
de Oliveira, Patricia Rosa [UNESP] Calligaris, Izabela Braggiao [UNESP] Roma, Gislaine Cristina [UNESP] Bechara, Gervasio Henrique [UNESP] Pizano, Marcos Aparecido [UNESP] Camargo Mathias, Maria Lzabel [UNESP] |
dc.subject.por.fl_str_mv |
Fluazuron Rhipicephalus sanguineus Tick Acaricide Benzoylphenylurea |
topic |
Fluazuron Rhipicephalus sanguineus Tick Acaricide Benzoylphenylurea |
description |
Conventional pesticides have suffered two main drawbacks: (a) broad spectrum of action and (b) selection of target species resistant to the different active ingredients. Thus compounds that are less harmful to the environment and to human health, more specific and that do not induce resistance need to be developed. One alternative are insect growth regulators, such as fluazuron. The present study examined the efficacy of fluazuron (active ingredient of the acaricide Acatak (R)) and the sensitivity of Rhipicephalus sanguineus nymphs exposed to different doses of this chemical, and determined the lethal doses of fluazuron: 95% - LD95 and 50% - LD50. Different doses of fluazuron were applied in duplicates on the dorsal region of hosts ("pour on"). Distilled water was used in the control group. on the first day after the treatment with fluazuron, hosts were artificially infested with R. sanguineus nymphs. After engorgement, nymphs were removed, placed on Petri dishes, identified, and maintained in BOD incubator for 15 days. Dead R. sanguineus nymphs after the treatment with 13 different doses of fluazuron were quantified and the LD95 was estimated to be 100 mg/kg and LD50, 19.544 mg/kg (12.478-22.636), with a confidence interval of 95%. Nymphs of R. sanguineus were sensitive to fluazuron at various levels, indicating that this insect growth regulator (IGR) may be used to control this parasite in this stage of its biological cycle, reducing the significant damage it causes. (C) 2012 Elsevier B.V. All rights reserved. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-05-01 2013-09-30T18:47:14Z 2013-09-30T18:47:14Z 2014-05-20T13:57:32Z 2014-05-20T13:57:32Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.exppara.2012.02.023 Experimental Parasitology. San Diego: Academic Press Inc. Elsevier B.V., v. 131, n. 1, p. 35-39, 2012. 0014-4894 http://hdl.handle.net/11449/20505 10.1016/j.exppara.2012.02.023 WOS:000303956100006 WOS000303956100006.pdf 2833668898846212 |
url |
http://dx.doi.org/10.1016/j.exppara.2012.02.023 http://hdl.handle.net/11449/20505 |
identifier_str_mv |
Experimental Parasitology. San Diego: Academic Press Inc. Elsevier B.V., v. 131, n. 1, p. 35-39, 2012. 0014-4894 10.1016/j.exppara.2012.02.023 WOS:000303956100006 WOS000303956100006.pdf 2833668898846212 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Experimental Parasitology 1.821 0,635 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
35-39 application/pdf |
dc.publisher.none.fl_str_mv |
Academic Press Inc. Elsevier B.V. |
publisher.none.fl_str_mv |
Academic Press Inc. Elsevier B.V. |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799965292132040704 |