Origin and life-history traits of Diabrotica virgifera virgifera (WCR) populations used in this study.

aWCR colonies were maintained in laboratory after field collection, prior to use in this study.bRotation resistance refers to the possession of behavioral traits of reduced fidelity to laying eggs in cornfields and greater mobility.cInitial eggs obtained from females collected as adults from soybean fields.dEggs obtained from females collected as larvae from first-year (rotated) cornfields.