A series of experiments have been carried out to establish the optimum dosage required for the radiosterilization of adults of Trialeurodes vaporariorum Westwood (Homoptera: Aleyrodidae) to be used for the sterile insect technique. Experimental data have shown that females are more radiosensitive than males at the 50-60 Gy dose range. In fact, full female sterility has been achieved with the dose of 50 ± 5% Gy. Males, treated with this dose, preserved <1% of the capacity to fertilize eggs. They became completely sterile at 60 ± 5% Gy. High levels of mortality (up to 35%) have been found in eggs laid by females mated with irradiated males. This shows that all irradiated males preserved a remarkable sperm transfer capacity and competitiveness resulting in egg fertilization but not in embryo development. The treatment with the 2 tested doses did not affect insect longevity under laboratory conditions. Considerations regarding the choice of the most appropriate radiosterilizing dose for the autocidal technique are discussed.
|Pages (from-to)||1022 - 1027|
|Number of pages||6|
|Journal||Journal of Economic Entomology|
|Publication status||Published - Aug 1997|
All Science Journal Classification (ASJC) codes
- Insect Science
Calvitti, M., Govoni, C., Buttarazzi, M., & Cirio, U. (1997). Induced Sterility in Greenhouse Whitefly (Homoptera: Aleyrodidae) Treated with Gamma Radiation. Journal of Economic Entomology, 90(4), 1022 - 1027.