Reported Resistance Case(s)

Species: rhipicephalus microplus

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

Active Ingredient: bromophos-ethyl

MOA: Acetylcholine esterase inhibitors, Organophophates
Group: OP	CAS #: 4824786	Shaugnessy Code: 214500

Resistance Case(s)

Case Id	Year of Report	Type of Resistance	Location	Reference
G1294	1967	Field Evolved Resistance	Australia-- Queensland	Roulston, W. J. and Wharton, R. H. (1967). Acaricide tests on the Biarra strain of organophosphorus resustant cattle ticks Boophilus microplus from southern Queensland.. Aust. Vet. J., 43 129-34.

*The population was created solely by selection and/or genetic manipulation.
**The population was selected further in the laboratory after collection.