Irradiation of 5th instars at 150 Gy prevented adult emergence.
Irradiation of 5 day-old pupae at 50 Gy prevented oviposition of emerged adult.
X-ray irradiation prevented F1 progeny from adults irradiated of S. nonagrioides at 50 Gy and above.
X-ray irradiation increased levels of DNA damage in S. nonagrioides larvae, pupae and adults.