Reported Resistance Case(s)

Species: delia antiqua

Order	Family	Common Name(s)	Group	Host
diptera	anthomyiidae	onion maggot	AG	vegetables

Active Ingredient: fonofos

MOA: Acetylcholine esterase inhibitors, Organophophates
Group: OP	CAS #: 944-22-9	Shaugnessy Code: 41701

Resistance Case(s)

Case Id	Year of Report	Type of Resistance	Location	Reference
G2944	1976	Field Evolved Resistance	USA-- Michigan	Harris, C. R. and Svec, . (1976). Onion maggot resistance to insecticides.. J. Econ. Entomol., 69 617-20.
G2946	1976	Field Evolved Resistance	Canada-- Ontario	Harris, C. R. and Svec, . (1976). Onion maggot resistance to insecticides.. J. Econ. Entomol., 69 617-20.

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