Survival, Development, and Oviposition of Resistant Diamondback Moth (Lepidoptera: Plutellidae) on Transgenic Canola Producing a Bacillus thuringiensis Toxin

摘要: We measured responses of diamondback moth, plutella xylostella L., to transgenic and nontransgenic canola, Brassica napus L. Transgenic canola expressed a crylAc gene Bacillus thurngiensis Berliner resulting in 238 ± 29 ng Cry lAc protein per milligram total extractable leaves. tested 2 Hawaiian strains moth: NO-QA was resistant CrylAc LAB-PS susceptible. Larval pupal durations, weights, adult emergence the were similar on but differed significantly canola. killed all larvae from susceptible strain. In contrast, for strain, no differences occurred between larval survival head capsule width at day 5, percentage pupation, weight, emergence, extent defoliation. For both detected feeding initiation or oviposition preference. The lack discrimination by neonates ovipositing females indicates that host choice behavior is independent susceptibility CrylAc. Development moth without any adverse effects provides an example pest has completely overcome high levels B. thuringiensis toxin genetically engineered plant.