The cattle tick Boophilus microplus (Canestrini) is one of the most important ectoparasites affecting tropical cattle with worldwide distribution. Application of organophosphate compounds (OP) is extensively used as a tick control method. However, the appearance of ticks resistant to the OP decreases the therapeutic efficacy of such compounds. Esterases have been implicated as potential biochemical mechanisms for detoxification in B. microplus larvae. We found increased esterase activity in the inner layers of the integument of OP resistant adult female B. microplus ticks as compared with the OP susceptible ticks. We discuss the potential role of these enzymes during acaricide metabolism and propose future research.
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1 November 2001
Histochemical Localization of Esterases in the Integument of the Female Boophilus microplus (Acari: Ixodidae) Tick
M. A. Villarino,
S. D. Waghela,
G. G. Wagner
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Journal of Medical Entomology
Vol. 38 • No. 6
November 2001
Vol. 38 • No. 6
November 2001
acaricide resistance
Boophilus microplus
esterase activity
tick integument