Reported Resistance Case(s)

Species: anthonomus grandis

Order	Family	Common Name(s)	Group	Host
coleoptera	curculionidae	boll weevil	AG	cotton

Active Ingredient: heptachlor

MOA: GABA-gated chloride channel antagonists, Cyclodiene organochlorines
Group: CYCLO	CAS #: 76-44-8	Shaugnessy Code: 44801

Resistance Case(s)

Case Id	Year of Report	Type of Resistance	Location	Reference
G105	1957	Field Evolved Resistance	USA-- Louisiana	Roussel, J. S., and Clower, D. (1957). Resistance to the chlorinated hydrocarbons in the boll weevil.. J. Econ. Entomol., 50 463-78.

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