Skip to main content


APRD Survey

Dear Users:

We value your contribution to and use of the Arthropod Pesticide Resistance Database (APRD).

The APRD Team is conducting a Survey to gauge users experiences, our objective is to determine how the database enhances research, and to allow for users to provide feedback, suggestions and requests for potential improvements. Please take the anonymous survey using this link: Link to Survey

Thank you for your Participation,
David Mota-Sanchez
Arthropod Resistance Database Director


Reported Resistance Case(s)

Species: culex peus

Order Family Common Name(s) Group Host
diptera culicidae mosquito MED

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
G2012 1972 Field Evolved Resistance
USA--
California
Womeldorf, D. J., Gillies, P. A., and White, K. E. (1972). Insecticide susceptibility of mosquiteos in California; illustrated distribution of organophosphorus resistance in larvae Aedes nigromaculis and Culex tarsalis.. Proc. Pap. 4th Annu. Conf. Calif. Mosq. Control Assoc., 40 17-21.
*The population was created solely by selection and/or genetic manipulation.
**The population was selected further in the laboratory after collection.