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1 September 2007 Characterization of Permethrin-Resistant Boophilus microplus (Acari: Ixodidae) Collected from the State of Coahuila, Mexico
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Abstract

Southern cattle ticks, Boophilus microplus (Canestrini) (Acari: Ixodidae), collected in Coahuila, Mexico, were determined to be resistant to permethrin. Discriminating concentration (DC) tests at the LC99 and 2X the LC99 of susceptible ticks produced 0 and 0.5% mortality, respectively, for permethrin. However, measured mortalities for coumaphos and amitraz acaricides were within the expected ranges. Polymerase chain reaction analysis of this strain detected a 99% frequency of homozygous resistant individuals in this strain.

Robert J. Miller, Jesus A. Esparza Rentaria, Humberto Quiroz Martinez, and John E. George "Characterization of Permethrin-Resistant Boophilus microplus (Acari: Ixodidae) Collected from the State of Coahuila, Mexico," Journal of Medical Entomology 44(5), 895-897, (1 September 2007). https://doi.org/10.1603/0022-2585(2007)44[895:COPBMA]2.0.CO;2
Received: 28 November 2006; Accepted: 30 April 2007; Published: 1 September 2007
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