Effect of irradiation on wing morphology of Drosophila suzukii.
The invasive spotted-wing drosophila, Drosophila suzukii (Matsumura, 1931), affects fruit with a thin epidermis and causes great loss of production. In Mexico, it is regulated because of its economic damage. Relevance of the sterile insect technique has been analyzed for integrated pest management (IPM) against D. suzukii through study of effects of irradiation doses on control. Possible effect of irradiation at 200 Gy with Cobalt-60, sex, and condition (wild and reared on artificial diet) on wing morphology were analyzed by geometric morphometry analysis. No effect on wing morphology by irradiation was observed, however, significant differences were found in the centroid size of wild females compared with irradiated and non-irradiated females fed artificial diet (F147,2 = 67.45, P < 0.0001), and they had no significant difference (F144,2 = 0.81, P = 0.4477) in Procrustes distances. Wild males had significant differences in centroid size (F147,2 = 59.55, P <0.0001) and Procruste distances (F144,2 = 3.49, P = 0.0330) compared to irradiated and non-irradiated males fed artificial diet. Changes in the wing of D. suzukii were more related with diets of insects in immature stages. Complementary studies on artificial diets are suggested to produce insects with dimensions similar to wild specimens.