Reported Resistance Case(s)

Species: rhipicephalus microplus

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

Active Ingredient: formothion

MOA: Acetylcholine esterase inhibitors, Organophophates
Group: OP	CAS #: 2540-82-1	Shaugnessy Code: 366400

Resistance Case(s)

Case Id	Year of Report	Type of Resistance	Location	Reference
G1591	1969	Field Evolved Resistance	Australia-- Queensland	Roulston, W. J. (1969). Acaricide resistance in the cattle tick, Boophilus microplus, in Austalia.. Proc. 2nd Int. Congr. Acarology, 1967, pp. 515-21.

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