ArticleAnimals : an open access journal from MDPI2022
First Description of Acaricide Resistance in Populations of
Article in Animals : an open access journal from MDPI, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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The trial behind it
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Who cites it
8 citing papers in PubMed, 8 citations in OpenAlex.
- Synergistic action of piperonyl butoxide with macrocyclic lactones in Rhipicephalus microplus.Experimental & applied acarology · 2026Article
- Chemical Composition and Ixodicidal Activity ofACS omega · 2026Article
- Comprehensive validation of the rapid tick exposure test (RaTexT®): accuracy, reproducibility and comparative performance to detect acaricide resistance in livestock ticks.Parasites & vectors · 2026Article
- Plants Used for Tick and Tick-Borne Disease Control in South Africa: Ethnoveterinary Knowledge, Bioactivity Evidence, and Translation Pathways.Plants (Basel, Switzerland) · 2025Review
- Diagnostic performance of a Rapid Tick exposure Test (RaTexTParasites & vectors · 2025Article
- The Industrial Residue of Andiroba (Veterinary sciences · 2025Article
- Toxicity of Common Acaricides, Disinfectants, and Natural Compounds against Eggs ofPathogens (Basel, Switzerland) · 2024Article
- Brazil's battle against Rhipicephalus (Boophilus) microplus ticks: current strategies and future directions.Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria · 2024Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
There is limited information on the resistance to acaricidal drugs of the cattle tick Rhipicephalus microplus in the Lower Amazon region. Thus, we aimed to determine the efficiency of three widely used acaricide products (Amitraz, Cypermethrin, and Deltamethrin) in the control of this tick species. The adult immersion test was used on engorged female ticks sampled on farms in the Lower Amazon region, Brazil. For the test, homogeneous batches of 10 engorged females were placed in Petri dishes and immersed in the tested acaricidal drugs, using four replicates of each acaricide and three replicates as a negative control, immersed in distilled water. The acaricides were diluted as recommended by the manufacturers, and the ticks were submerged for five minutes. Mortality of engorged females, production of eggs, and percentage of larval hatching were evaluated. Tick mortality was 2.5%, 7.5%, and 0% for Amitraz, Cypermethrin, and Deltamethrin, respectively. The percentage of larval hatching was 53.7% for Amitraz, 88.7% for Cypermethrin, and 80.0% for Deltamethrin. As recommended by the FAO, for the acaricide to be considered effective, it must have a control rate ≥95%. Among the tested acaricides, Amitraz showed an efficacy of 90.5%, Cypermethrin 10.4%, and Deltamethrin 26.6%. Ticks from the lower Amazon showed marked resistance to Cypermethrin and Deltamethrin and mild resistance to Amitraz. This is the first report of acaricidal resistance in the region.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.