Sylvie Gimenez et al. compare adaptation by copy number variation in two geographically distinct populations of the fall armyworm and find a relationship between copy number variation and insecticide resistance. The authors perform toxicological tests to confirm a role of the CYP gene cluster in insecticide resistance and suggest that evolutionary forces causing insecticide resistance can be independent of host-plant adaptation.
- Sylvie Gimenez
- Heba Abdelgaffar
- Kiwoong Nam
