Reported Resistance Case(s)

Species: ctenocephalides felis

Order	Family	Common Name(s)	Group	Host
siphonaptera	pulicidae	cat flea	MED	cat, human

Active Ingredient: malathion

MOA: Acetylcholine esterase inhibitors, Organophophates
Group: OP	CAS #: 121755	Shaugnessy Code: 57701

Resistance Case(s)

Case Id	Year of Report	Type of Resistance	Location	Reference
G4780	1986	Field Evolved Resistance	USA-- Florida	El-Gazzar, L. M., Milio, J., Koehler, P. G. and Patterson, R. S. (1986). Insecticide resistance in the cat flea (Siphonaptera: Pulicidae).. J. Econ. Entomol., 79 132-34.
G1479	1968	Field Evolved Resistance	Puerto Rico	Fox, I., Rivera, G. A. and Bayona, I. G. (1968). Toxicity of six insecticides to the cat flea.. J. Econ. Entomol., 61 869-70.

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