Resistance of the tick Boophilus microplus to organophosphate and synthetic pyrethroid acaricides in the department of Huila

https://doi.org/10.25100/socolen.v23i1.9862
Keywords:
Ticks, Boophilus microplus, Acaricides, Resistance to Acaricides, Integrated Management of Ticks

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Issue: Vol. 23 No. 1 (1997)
Section Agriculture / Research paper

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Authors

ALVARO ROMERO-NASAYO Corporación Colombiana de Investigación Agropecuaria (CORPOICA)
EFRAÍN BENAVIDES-ORTIZ Corporación Colombiana de Investigación Agropecuaria (CORPOICA)
CÁNDIDO HERRERA-GONZÁLEZ Unidades Municipales de Asistencia Técnica (UMATA)
MARÍA HELENA PARRA-TRUJILLO Corporación Colombiana de Investigación Agropecuaria (CORPOICA)
Abstract

40 samples of Boophilus microplus ticks collected in farms in the department of Hui­la were evaluated using the larval packet test (FAO kit) to determine their level of susceptibility to the acaricides: diazinon, coumaphos, cypermethrin, deltamethrin, and dieldrin. Laboratory results showed the presence of resistance to the synthetic pyrethroids on 25 farms; whilst, marked resistance to the organophosphates evaluated was found on 4 farms. Dieldrin showed intermediate resistance on all samples. The association between acaricide management and the presence of resistance was established by means of a questionary applied on each farm. A significative association (p-0.04) was found between resistance to dieldrin and continuous grazing; with a relative risk (R.R) of 2.3. Likewise, significative associations were detected between resistance to cypermethrin and the risk factors: type of production (milk and dual-purpose, p=0.01, R.R=2.7) and the frequency of treatments (more than 12 dips/year, p=0.01, R. R1.7)

How to Cite
1.
ROMERO-NASAYO A, BENAVIDES-ORTIZ E, HERRERA-GONZÁLEZ C, PARRA-TRUJILLO MH. Resistance of the tick Boophilus microplus to organophosphate and synthetic pyrethroid acaricides in the department of Huila. Rev. Colomb. Entomol. [Internet]. 1997 Jan. 15 [cited 2025 Dec. 19];23(1):9-17. Available from: https://revistacolombianaentomologia.univalle.edu.co/index.php/SOCOLEN/article/view/9862
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