An analysis of heterosis and outbreeding depression among lab-reared populations of the parasitoid Diachasmimorpha tryoni (Cameron) (Hymenoptera: Braconidae); potential implications for augmentative releases

► Genetically modeled the influence of heterosis on augmentative biocontrol. ► Parentage of F1 progeny and their fitness was defined. ► Hybrids were found to be of differential fitness, depending on their parental ancestry. ► The genetic interactions between populations (wild and lab) is potentially significant to augmentative releases.