Reported Resistance Case(s)

Species: chaoborus astictopus

Order	Family	Common Name(s)	Group	Host
diptera	chaoboridae	clear lake gnat	PAR

Active Ingredient: chlorpyrifos

MOA: Acetylcholine esterase inhibitors, Organophophates
Group: OP	CAS #: 2921882	Shaugnessy Code: 59101

Resistance Case(s)

Case Id	Year of Report	Type of Resistance	Location	Reference
G3405	1978	Field Evolved Resistance	USA-- California	Ali, A. and Mulla, M. S. (1978). Declining field efficacy of chlorpyrifos against chironomid midges and laboratory evaluation of substitute larvicides.. J. Econ. Entomol., 71 778-82.

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