Reported Resistance Case(s)

Species: diabrotica virgifera

Order	Family	Common Name(s)	Group	Host
coleoptera	chrysomelidae	western corn rootworm	AG	corn

Active Ingredient: Cry3Bb1

MOA: Microbial disruptors of insect midgut membranes (includes transgenic crops), Bacillus thuringiensis (variety unstated)
Group: BAC	CAS #:	Shaugnessy Code:

Resistance Case(s)

Case Id	Year of Report	Type of Resistance	Location	Reference
G19914	2017	Field Evolved Resistance	USA-- Minnesota	Ludwick, D. C., Meihls, L. N., Ostlie, K. R., Potter, B. D., French, L., and Hibbard, B. E. (2017). Minnesota field population of western corn rootworm (Coleoptera: Chrysomelidae) shows incomplete resistance to Cry34Ab1/Cry35Ab1 and Cry3Bb1. Journal of Applied Entomology, 141 28-40.
G19915	2017	Lab selected*	USA-- Kansas-- Dodge City	Ludwick, D. C., Meihls, L. N., Ostlie, K. R., Potter, B. D., French, L., and Hibbard, B. E. (2017). Minnesota field population of western corn rootworm (Coleoptera: Chrysomelidae) shows incomplete resistance to Cry34Ab1/Cry35Ab1 and Cry3Bb1. Journal of Applied Entomology, 141 28-40.
G19916	2016	Field Evolved Resistance	USA-- Minnesota-- Canby	Zukoff, A. N., Ostlie, K. R., Meihls, L. N., Zukoff, A. L., French, L., Ellersieck, M. R., French, B. W., and Hibbard, B. E. (2016). Multiple assays indicate varying levels of cross resistance in Cry3Bb1-selected field populations of the Western Corn Rootworm to mCry3.1Ab, and Cry34/35Ab1. Journal of Economic Entomology, 103 1387-1398.
G19917	2016	Field Evolved Resistance	USA-- Minnesota-- Dennison	Zukoff, A. N., Ostlie, K. R., Meihls, L. N., Zukoff, A. L., French, L., Ellersieck, M. R., French, B. W., and Hibbard, B. E. (2016). Multiple assays indicate varying levels of cross resistance in Cry3Bb1-selected field populations of the Western Corn Rootworm to mCry3.1Ab, and Cry34/35Ab1. Journal of Economic Entomology, 103 1387-1398.
G13309	2011	Field Evolved Resistance	USA-- Iowa	Gassman, A. J., Petzold-Maxwell, J. L., Keweshan, R. S., and Dunbar, M. W. (2011). Field-Evolved Resistance to Bt Maize by Western Corn Rootworm. PLoS One, 6 (7).

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