Four populations of Plutella xylostella (L.) (Lepidoptera: Yponomeutidae) isolated in Brazil, Reunion Island, Philippines and Benin were evaluated for susceptibility to B. thuringiensis. Genetic variability was accessed by RAPD analysis. Although the populations were originated from diverse geographical origins, the two evaluated parameters showed a high degree of similarity. This suggests that although the populations were geographically distant, they have a high degree of similarity.
Brassicaceae; Plutella xylostella; genetic variability; biological control
