A new approach to characterization of the resistance of populations of Rhipicephalus microplus (Acari : Ixodidae) to organophosphate and pyrethroid in the State of Minas Gerais, Brazil.
The monitoring of resistance of cattle tick populations in Brazil to the chemical bases in use is largely limited to investigation of the phenotypic profile. There are few studies investigating the role played by the genotypic profile in acaricide resistance in the country. Therefore, the aim of the present study was to carry out molecular characterization and trace out the genetic profile of populations of Rhipicephalus microplus with respect to resistance to the organophosphate and pyrethroid chemical groups. For that purpose, larvae were genotyped belonging to 587 populations for pyrethroids and 306 for organophosphates, using the polymerase chain reaction technique. It was found that 75.49% and 97.44% of the larvae studied showed resistance to the organophosphates and pyrethroids, respectively. Among the populations resistant to pyrethroids, 91.9% were heterozygotes, showing that most of the resistant populations have only one allele responsible for resistance. Therefore, it is possible to conclude that the genotyped populations have high resistance to organophosphates, and even more so to pyrethroids. This information is fundamental for understanding the mechanisms of resistance of R. microplus to acaricides, to enable improvement of control techniques.
Main Authors: | FAZA, A. P., PINTO, I. S. B., FONSECA, I., ANTUNES, G. R., MONTEIRO, C. M. DE O., DAEMON, E., MUNIZ, M. de S., MARTINS, M. F., FURLONG, J., PRATA, M. C. de A. |
---|---|
Other Authors: | ALINE PASQUALINI FAZA, UFJF; ISABELLA SILVESTRE B. PINTO, UFJF; ISABELA FONSECA, UFJF; GUSTAVO RESENDE ANTUNES, UFJF; CAIO MARCIO DE OLIVEIRA MONTEIRO, UFRRJ; ERIK DAEMON, UFJF; MICHELLE DE SOUZA MUNIZ, CNPGL; MARTA FONSECA MARTINS, CNPGL; JOHN FURLONG, CNPGL; MARCIA CRISTINA DE AZEVEDO PRATA, CNPGL. |
Format: | Artigo de periódico biblioteca |
Language: | Ingles English |
Published: |
2013-08-01
|
Subjects: | Carrapato de boi, Piretroide, Genotipico, |
Online Access: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/963149 https://doi.org/10.1016/j.exppara.2013.04.006 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
Resistance profile of Rhipicephalus (Boophilus) microplus to diazinon and cypermethrin and first report of sodium channel mutation - domain III S6 - T2134A, in field samples from the state of São Paulo, Brazil.
by: SANTOS, M. da L., et al.
Published: (2023-12-01) -
Characterization of the pyrethroid resistance profile of Rhipicephalus (Boophilus) microplus populations from the states of Rio Grande do Sul and Mato Grosso do Sul, Brazil.
by: MENDES, M. C., et al.
Published: (2014-01-24) -
Susceptibilidade de diferentes populações de Rhipicephalus microplus (ACARI: IXODIDAE) ao timol.
by: NOVATO, T. P. L., et al.
Published: (2018-10-10) -
Caracterização molecular de populações de Rhipicephalus (Boophilus) microplus (Acari: ixodidae) resistente a piretróides.
by: PINTO, I. S. B., et al.
Published: (2011-03-23) -
Desenvolvimento de protocolos de extração de DNA genômico de Rhipicephalus (Boophilus) Microplus (Acari: ixodidae).
by: FAZA, A. P., et al.
Published: (2011-03-23)