Artículo
Resistance of the cattle tick Rhipicephalus (Boophilus) microplus to fluazuron in Argentina
Torrents, Jorgelina; Sarli, Macarena
; Sarmiento, Nestor Fabian; Rossner, Maria Victoria
; Morel, Eneas Nicolas
; Guglielmone, Alberto Alejandro
; Nava, Santiago
Fecha de publicación:
05/2022
Editorial:
Springer
Revista:
Experimental and Applied Acarology
ISSN:
0168-8162
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The aim of this work is to report the presence of resistance to fluazuron in a population of Rhipicephalus microplus in Argentina. The evidence was obtained from field and in vitro trials. In the field trial, cattle infested with ticks was treated with two commercial formulations of fluazuron. The in vitro trial (adult immersion test, AIT) was performed by using technical grade fluazuron. In the field trial, there were no significant differences between the treated and control groups between days 2 and 34 post-treatment. The only exceptions (treated group I in day 14 post-treatment, treated group II in days 23 and 29 post-treatment) had a significantly lower tick load than the untreated group, but the efficacy was not higher than 70%. Viable engorged females were collected on both groups of treated bovines in all counts, and the production of viable larvae was not precluded with the application of the two commercial formulations of fluazuron evaluated in this study. The results obtained with the in vitro assay (AIT) also indicate that the R. microplus population tested in this work has a higher level of resistance to fluazuron than another susceptible field strain. The integrated analysis of the field and in vitro trials clearly reveals the emergence of resistance to fluazuron in a R. microplus population from Argentina. This diagnosis of resistance does not imply that the fluazuron has lost its functionality at a regional scale, but it highlights the need to establish control strategies that minimize the use of this drug in order to preserve its functionality as an acaricide.
Palabras clave:
ARGENTINA
,
CATTLE TICK
,
CONTROL
,
FLUAZURON
,
RESISTANCE
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Articulos (IDICAL)
Articulos de INSTITUTO DE INVESTIGACION DE LA CADENA LACTEA
Articulos de INSTITUTO DE INVESTIGACION DE LA CADENA LACTEA
Citación
Torrents, Jorgelina; Sarli, Macarena; Sarmiento, Nestor Fabian; Rossner, Maria Victoria; Morel, Eneas Nicolas; et al.; Resistance of the cattle tick Rhipicephalus (Boophilus) microplus to fluazuron in Argentina; Springer; Experimental and Applied Acarology; 86; 4; 5-2022; 599-606
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