In this study, the use of ionizing radiation for inducing mutations by Co-γ rays has been first 60 applied in the genetic breeding of Fenneropenaeus penicillatus. We primarily discussed the biological effect of Fenneropenaeus penicillatus larvae under different radiation-induced doses of 60Co-γ rays. Through the record of the egg numbers, hatch rate, survival rate and the life performance of the parental prawns, we can make a decision in radiation-induced doses to ensure the adaptable range of the radiation...