Reported Resistance Case(s)

Species: psylla pyricola

Order	Family	Common Name(s)	Group	Host
homoptera	psyllidae	pear psylla	AG	pear

Active Ingredient: dimethoate

MOA: Acetylcholine esterase inhibitors, Organophophates
Group: OP	CAS #: 60155	Shaugnessy Code: 35001

Resistance Case(s)

Case Id	Year of Report	Type of Resistance	Location	Reference
G813	1965	Field Evolved Resistance	Canada-- British Columbia	McMullen, R.C. (1965). In: FAO 1967.

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