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Acaricide effect of plants from the Brazilian savanna on a population of Rhipicephalus microplus with phenotypic resistance to cypermethrin and trichlorfon.
Zaldivar, Maykelin Fuentes; Bastianetto, Eduardo; Pereira Filho, Adalberto Alves; Rodrigues, Daniel Sobreira; Martins Júnior, Valdo Soares; Morais-Costa, Francielle; Vasconcelos, Viviane Oliveira; Duarte, Eduardo Robson; Araujo, Ricardo Nascimento.
Afiliação
  • Zaldivar MF; Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
  • Bastianetto E; Veterinary School, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
  • Pereira Filho AA; Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
  • Rodrigues DS; Santa Rita Experimental Field, Empresa Mineira de Pesquisa Agropecuária de Minas Gerais, Minas Gerais, Prudente de Morais, MG, Brazil.
  • Martins Júnior VS; Institute of Agricultural Sciences, Universidade Federal de Minas Gerais, Montes Claros, MG, Brazil.
  • Morais-Costa F; Department of Biological Sciences, Universidade Federal de Minas Gerais, Montes Claros, MG, Brazil.
  • Vasconcelos VO; Graduate Program in Applied Botany, Universidade Estadual de Montes Claros, Monte Claros, MG, Brazil.
  • Duarte ER; Institute of Agricultural Sciences, Universidade Federal de Minas Gerais, Montes Claros, MG, Brazil.
  • Araujo RN; Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil. Electronic address: rnaraujo@icb.ufmg.br.
Vet Parasitol ; 331: 110281, 2024 Oct.
Article em En | MEDLINE | ID: mdl-39111197
ABSTRACT
Rhipicephalus microplus is among the most important ectoparasites for livestock. The use of synthetic acaricides has raised some concerns due to the selection of tick populations that are resistant to acaricides and environmental contamination. Therefore, plant extracts have been used as alternatives for the treatment of animals infested with ticks. In this study, R. microplus populations from seven different dairy farms were collected and assessed for their resistance to the acaricides cypermethrin or trichlorfon. Larvae of the most resistant population were used in assays to evaluate the acaricide effect of leaf extracts from plants of the Brazilian savanna. The most active extracts were also tested against fully engorged females. Among seven tick populations, five and three showed resistance level ≥ III for cypermethrin or trichlorfon, respectively. The most resistant tick population was evaluated in mortality assays with the plants Piptadenia viridiflora, Annona crassiflora, Caryocar brasiliense, Ximenia americana, and Schinopsis brasilienses. The ethanolic extracts of C. brasiliense, X. americana and S. brasilienses showed higher larvicidal effects in comparison to the other extracts and cypermethrin. The ethanolic extract of X. americana showed 60.79 % efficacy against fully engorged females of the acaricide resistant tick strain. The ethanolic extracts of C. brasiliense, X. americana, and S. brasilienses showed peaks in HPLC-DAD, indicating the presence of tannins and flavonoids. Three of the plants showed promising results and should be explored in further studies to develop novel tools to control R. microplus in cattle.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Piretrinas / Triclorfon / Extratos Vegetais / Rhipicephalus / Acaricidas Limite: Animals País/Região como assunto: America do sul / Brasil Idioma: En Revista: Vet Parasitol Ano de publicação: 2024 Tipo de documento: Article País de publicação: Holanda
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Piretrinas / Triclorfon / Extratos Vegetais / Rhipicephalus / Acaricidas Limite: Animals País/Região como assunto: America do sul / Brasil Idioma: En Revista: Vet Parasitol Ano de publicação: 2024 Tipo de documento: Article País de publicação: Holanda