Fecha/hora: 16/06/2024 02:48:27

Biblioteca(s): | INIA La Estanzuela.
Fecha corriente: | 09/06/2021
Fecha de la última actualización: | 10/08/2021
Autoria: | MITTON, G.A.; QUINTANA, S; MENDOZA, Y.; EGUARAS, M.; RUFFINENGO, S.R.
Afiliación: | GIULIA A. MITTON,, Centro de Investigación de Abejas Sociales (CIAS), Instituto de Investigaciones en Producción Sanidad y Ambientes (IIPROSAM), Facultad de  Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Mar del Plata, Argentina,; SILVINA QUINTANS, Centro de Investigación de Abejas Sociales (CIAS), Instituto de Investigaciones en Producción Sanidad y Ambientes (IIPROSAM), Facultad de  Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Mar del Plata, Argentina.; YAMANDU MENDOZA SPINA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MARTÍN EGUARAS, Centro de Investigación de Abejas Sociales (CIAS), Instituto de Investigaciones en Producción Sanidad y Ambientes (IIPROSAM), Facultad de  Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Mar del Plata, Argentina.; SERGIO R. RUFFINENGO, Centro de Investigación de Abejas Sociales (CIAS), Instituto de Investigaciones en Producción Sanidad y Ambientes (IIPROSAM), Facultad de  Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Mar del Plata, Argentina.
Título: | L925V mutation in voltage-gated sodium channel of Varroa destructor populations from Argentina and Uruguay, with different degree of susceptibility to pyrethroids.
Año de publicación: | 2021
Fuente/Imprenta: | International Journal of Acarology,  Volume 47, Issue 5,  Pages 374-380, 2021. Doi: https://doi.org/10.1080/01647954.2021.1914158
DOI: | 10.1080/01647954.2021.1914158
Idioma: | Inglés
Notas: | Article history: Accepted 29 March 2021/Published online 13 May 2021.  This work was supported by the Agencia Nacional de Promoción Científica y Tecnológica under Grant [PICT-2015-1807]. GA Mitton is a doctoral fellow from CONICET, Argentina.

Contenido:

ABSTRACT: This study aimed to detect mutations associated with pyrethroid resistance mechanism in different populations of Varroa destructor from Uruguay and Argentina with different degree of susceptibility to this family of acaricides. Bioassays were performed to evaluate the degree of susceptibility to flumethrin 
and tau-fuvalinate; then mites were studied in order to determine the presence or absence of the resistance-associated mutations by sequencing a region of the sodium channel gene. In the mites studied from Colonia, which showed resistance to flumethrin and susceptibility to tau-fluvalinate in the bioassays, L925V mutation was observed in heterozygous and homozygous state. The presence of the wild-type allele in homozygous state was identified in all mites from Treinta y Tres, in which acaricides have never been used. The mite population from Mar del Plata through bioassays were determined as susceptible to both pyrethroids, however, genotyping results showed the presence of heterozygous individuals (925 V/L) as well as homozygous wild type (925L), while homozygous resistant 
individuals (925V) were present at low frequency. This would suggest that this population presents a great potential to give a generalized resistance to pyrethroids. This study represents the first report of a L925V mutation in resistant mites to flumethrin from South America.

Palabras-Clave: | Pyrethroids; RESISTANCE; Synthetic acaricides; VARROA DESTRUCTOR.
Thesagro: | APIS MELLIFERA; RESISTENCIA.
Categoría del tema: | --
Registro original: | INIA La Estanzuela (LE)
Ejemplares: | LE - (103384-1) - PXI - AP - DD - PP/International J. of Acarology/2021 -  -  - DIS