Evaluation of the susceptibility to fipronil of Rhipicephalus microplus larvae from egg masses incubated at different times of oviposition

The objective of this work was to evaluate the susceptibility of R. microplus larvae from different oviposition times to fipronil. The LPT was performed in sextuplicate, at concentrations of 18.75, 37.5, 75, 150 and 300 µg.mL(-1). The LC(50) found for the egg masses incubated with +7, +14 and +21 da...

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Detalles Bibliográficos
Autores principales: Rocha, Daniela de Oliveira, Roque, Roxanne Marina da Silva, de Souza Vieira, Thiago, de Jesus, Ingrid Lins Raquel, Guimarães, Brena Gava, Rocha, Marisa Beatriz da Silva, Scott, Fabio Barbour, Avelar, Barbara Rauta
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Sociedade de Medicina Veterinária do Estado do Rio de Janeiro 2023
Materias:
Research Note
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10079253/
https://www.ncbi.nlm.nih.gov/pubmed/37040296
http://dx.doi.org/10.29374/2527-2179.bjvm005922
Descripción
Sumario:The objective of this work was to evaluate the susceptibility of R. microplus larvae from different oviposition times to fipronil. The LPT was performed in sextuplicate, at concentrations of 18.75, 37.5, 75, 150 and 300 µg.mL(-1). The LC(50) found for the egg masses incubated with +7, +14 and +21 days were respectively 105.87, 110.71 and 121.22 µg.mL(-1). The larvae originating from egg masses from the same group of engorged females, incubated on different days, presented similar mortality rates compared to the evaluated fipronil concentrations, facilitating the maintenance of laboratory colonies of this tick species.

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