First report of fipronil resistance in Rhipicephalus (Boophilus) microplus of Mexico

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• 作者：Robert J. Miller^a ; ^{robert.miller@ars.usda.gov} ; Consuelo Almazá ; n^b ; ^{almazan@uat.edu.mx} ; Martí ; n Ortí ; z-Estrada^c ; ^{martin.ortiz@novartis.com} ; Ronald B. Davey^a ; John E. George^d ; ^{John.george@ars.usda.gov} ; Adalberto Peré ; z De Leó ; n^d
• 关键词：Southern cattle tick ; Resistance ; Organophosphate ; Pyrethroid ; Phenylpyrazole ; Amidine ; Macrocyclic lactone
• 刊名：Veterinary Parasitology
• 出版年：2013
• 出版时间：16 January, 2013
• 年：2013
• 卷：191
• 期：1-2
• 页码：97-101
• 全文大小：345 K

文摘

Five strains of Rhipicephalus (Boophilus) microplus collected from Tamaulipas Mexico were tested for resistance against several classes of acaricides commonly used. All were resistant to fipronil. Four of five were co-resistant to permethrin and coumaphos in addition to being resistant to fipronil. One strain, El Zamora was found multi-resistant to permethrin, coumaphos, fipronil, and amitraz. Selection with fipronil for 3 generations produced a resistance ratio of 8.3 and 9.4 at the LCb>50b> and the LCb>99b> estimates, respectively. Permethrin resistance in El Zamora was possibly linked to elevated esterase (CZEST9) and could be a contributing factor of resistance to fipronil. The implications of resistance for the control of the southern cattle tick in the future are discussed.