Reported Resistance Case(s)

Species: boophilus microplus

Order	Family	Common Name(s)	Group	Host
acari	ixodidae	southern/tropical cattle tick	MED	cattle

Active Ingredient: amitraz

MOA:	Octopaminergic agonist, Amitraz
Group:	FORM CAS #: 33089611 Shaugnessy Code: 106201

Resistance Case(s)

Case Id	Year of Report	Location	Reference
	2007	Mexico -- Yucatan -- FA1	Rosado-Aguilar, J.A., Rodriguez-Vivas, R.I>, Garcia-Vazquez, Z., Fragoso-Sanchez, H., Oritz-Najera, A., and Rosario-Cruz, R. (2008). Development of amitraz resitance in field populations of Boophilus microplus (Acari: Ixodidae) undergoing typical amitraz exposure in the Mexican tropics. Veterinary Parasitology, 152, 349-353.
	2007	Mexico -- Yucatan -- FA2	Rosado-Aguilar, J.A., Rodriguez-Vivas, R.I>, Garcia-Vazquez, Z., Fragoso-Sanchez, H., Oritz-Najera, A., and Rosario-Cruz, R. (2008). Development of amitraz resitance in field populations of Boophilus microplus (Acari: Ixodidae) undergoing typical amitraz exposure in the Mexican tropics. Veterinary Parasitology, 152, 349-353.
	2007	Mexico -- Yucatan -- FA3	Rosado-Aguilar, J.A., Rodriguez-Vivas, R.I>, Garcia-Vazquez, Z., Fragoso-Sanchez, H., Oritz-Najera, A., and Rosario-Cruz, R. (2008). Development of amitraz resitance in field populations of Boophilus microplus (Acari: Ixodidae) undergoing typical amitraz exposure in the Mexican tropics. Veterinary Parasitology, 152, 349-353.
	2007	Mexico -- Tabasco -- Emiliano Zapata -- ranch	Davey, Ronald B., Miller, Robert J., and George, John E. (2008). Efficacy of amitraz applied as a dip against an amitraz-resistant strain of Rhipicephalus (Boophilus) microplus ( Acari: Ixodidae) infested on cattle. Veterinary Parasitology, 152, 127-135.
	2007	Mexico -- Yucatan -- FA2	Rosado-Aguilar, J.A., Rodriguez-Vivas, R.I>, Garcia-Vazquez, Z., Fragoso-Sanchez, H., Oritz-Najera, A., and Rosario-Cruz, R. (2008). Development of amitraz resitance in field populations of Boophilus microplus (Acari: Ixodidae) undergoing typical amitraz exposure in the Mexican tropics. Veterinary Parasitology, 152, 349-353.
	2007	Mexico -- Yucatan -- FA2	Rosado-Aguilar, J.A., Rodriguez-Vivas, R.I>, Garcia-Vazquez, Z., Fragoso-Sanchez, H., Oritz-Najera, A., and Rosario-Cruz, R. (2008). Development of amitraz resitance in field populations of Boophilus microplus (Acari: Ixodidae) undergoing typical amitraz exposure in the Mexican tropics. Veterinary Parasitology, 152, 349-353.
	2007	Brazil -- Santa Luiza	Li, A. Y., Davey, R. B., Miller, R. J., Guerrero, F. D., and George, J. E. (2008). Genetics and Mechanism of Permethrin Resistance in the Santa Luiza Strain of Boophilus microplus (Acari: Ixodidae). Journal of Medical Entomology, 45, 4277-438.
	2004	Brazil -- Santa Luiza -- field	Li, A.Y., Davey, R.B., Miller, R.J., George, J.E. (2005). Mode of inheritance of amitraz resistance in a Brazilian strain of the southern cattle tick, Boophilus microplus (Acari: Ixodidae). Experimental and Applied Acarology, 37, 183-198.
	2003	New Caledonia -- Gadji	Ducornez, S., Barre, N., Miller, R.J., Garine-Wichatitsky, M. de. (2005). Diagnosis of amitraz resistance in Boophilus microplus in New Caledonia with the modified Larval Packet Test. Veterinary Parasitology, 130, 285-292.
	2003	Brazil	Li, A.Y., Davey, R.B., Miller, R.J., George, J.E. (2004). Detection and Characterizationof Amitraz Resistance i the Southern Cattle Tick, Boophilus microplus (Acari: Ixodidae). Journal of Medical Entomology, 41, 193-200.
	2001	Brazil -- Santa Luiza	Miller, R.J., Davey, R.B., George, J.E. (2002). Modification to the Food and Agriculture Organization Larval Packet Test to Measure Amitraz-Susceptibility Against Ixodidae. Journal of Medical Entomology, 39, 645-651.
	2000	Brazil -- Ranch	Li, Andrew Y., Chen, Andrew C., Miller, Robert J., Davey, Ronald B., and George,John E. (2007). Acaricide resistance and synergism between permethrin and amitraz against susceptible and resistant strains of Boophilus microplus (Acari: Ixodidae). Pest Management Science, 62, 822-889.
	1981	Australia -- Queensland	Nolan, J. (1981). Current developments in resistance to amidine and pyrethroid tickicides in Australia. In: Whitehead, G. B. and Gibson, J. D. Tick Biology and Control. Tick Res. Unit, Rhodes Univ., Grahamstown, So. Africa, pp., 109-14