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Abstract

The objectives of this study were: (1) to determine the prevalence and factors associated with Rhipicephalus microplus, resistant to cypermethrin and amitraz, from cattle farms in Veracruz, Mexico, and (2) to determine in vitro mortality percentages of field populations of R. microplus exposed to...

Author(s)
Fernández-Salas, A.; Rodríguez-Vivas, R. I.; Alonso-Díaz, M. Á.
Publisher
American Society of Parasitologists, Lawrence, USA
Citation
Journal of Parasitology, 2012, 98, 5, pp 1010-1014
Abstract

The acaricidal effects of 55 strains of Metarhizium anisopliae (Metschnikoff) Sorokin, 1883 (Hypocreales: Clavicipitaceae) isolated from paddocks of cattle farms were evaluated in two Rhipicephalus microplus (Canestrini 1887) (Ixodida: Ixodidae) populations, of which one was multi-resistant and one ...

Author(s)
Fernández-Salas, A.; Alonso-Díaz, M. A.; Alonso-Morales, R. A.; Lezama-Gutiérrez, R.; Rodríguez-Rodríguez, J. C.; Cervantes-Chávez, J. A.
Publisher
Wiley, Oxford, UK
Citation
Medical and Veterinary Entomology, 2017, 31, 1, pp 36-43
Abstract

The objectives of the present study were: (1) to report the percentage of cattle farms with gastrointestinal nematodes (GINs) resistant to levamisole in Veracruz, Mexico, (2) to identify the genera of GINs involved in resistance, and (3) to identify factors associated with these resistances. The...

Author(s)
Becerra-Nava, R.; Alonso-Díaz, M. A.; Fernández-Salas, A.; Quiroz, R. H.
Publisher
Elsevier B. V., Amsterdam, Netherlands
Citation
Veterinary Parasitology, 2014, 204, 3/4, pp 285-290
Abstract

The objectives of the present study were: (i) to identify the frequency of cattle farms with a cohabitation of Amblyomma cajennense and Rhipicephalus microplus, (ii) to determine the status of susceptibility or resistance to acaricides used in Veracruz, Mexico, on A. cajennense populations and...

Author(s)
Alonso-Díaz, M. A.; Fernández-Salas, A.; Martínez-Ibáñez, F.; Osorio-Miranda, J.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Veterinary Parasitology, 2013, 197, 1/2, pp 326-331
Abstract

The objectives of the present study were to (1) determine the status of resistance or susceptibility to ivermectin (IVM) in Rhipicephalus microplus tick populations in Veracruz, Mexico, (2) determine the level of resistance (resistance ratios [RR] and lethal concentrations for 50% [LC50] and 99%...

Author(s)
Fernández-Salas, A.; Rodríguez-Vivas, R. I.; Alonso-Díaz, M. A.; Basurto-Camberos, H.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Veterinary Parasitology, 2012, 190, 1/2, pp 210-215
Abstract

We document the presence of a Rhipicephalus microplus tick population resistant to acaricides (organophosphates (OP), synthetic pyrethroids (SP), amitraz) and macrocyclic lactones (ML) (ivermectin). Engorged females of R. microplus were collected from a cattle farm in Veracruz, Mexico, to evaluate...

Author(s)
Fernández-Salas, A.; Rodríguez-Vivas, R. I.; Alonso-Díaz, M. A.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Veterinary Parasitology, 2012, 183, 3/4, pp 338-342

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