Biological and Biochemical Alterations Associated with Sterility Induced by Gamma Radiation on Parents and First Generation Males of Helicoverpa armigera (Hübner)

Abstract

The efficiency of substerile gamma radiation dose on biological, biochemical analysis of the essential nutritive components (total protein, lipids and carbohydrate concentrations), and the sexual hormones (free testosterone and follicle stimulating hormone) of male Helicoverpa armigera (parent generation P and first generation F 1) irradiated as full grown male pupae were studied. The results revealed that there was a significant decrease in emergence percentage of P and F 1 generations with increasing radiation dose, which noted that the sex ratio of P and F 1 generations were in favour of male. The fecundity and fertility of P and F 1 were decreased. However, the sterility percentage of P and F 1 generations was increased by increasing the radiation dose which was more pronounced in F 1 than in P. A negative significant correlation was found between both of the larval duration and pupation percentage of F 1 and the increase of radiation dose. The results indicated a significant decrease in the essential nutritive components (total protein, lipids, and carbohydrate concentrations) and the sexual hormones (free testosterone and follicle stimulating hormone). Furthermore, the reduction was more in F 1 than in P males. In general, it was obvious that the substerile gamma radiation doses enhanced an inherited sterility in H. armigera. Therefore, it could be concluded that inherited sterility of H. armigera may contribute to reduction of insecticides application or may integrate with other safe control methods in controlling H. armigera.

Impact of Gamma Radiation on Differernt Stages of Spilostethus pandurus (Scopoli, 1763): A Biochemical Perspective

“…Previous studies showed a declining effect of gamma radiation on protein, lipids, carbohydrates contents; Kheirallah and El-Samad (2016) on male's Blaps polycresta (Coleoptera: Tenebrionidae), Sayed and Zahran (2017) on Helicoverpa armigera (Lepidoptera: Noctuidae) males irradiated as full-grown pupae, and Abdalla et al (2019) on irradiated Tribolium confusum (Coleoptera: Tenebrionidae) adults.…”

Gamma-ray irradiation's effects on several biological and biochemical processes of Spodoptera frugiperda (Lepidoptera: Noctuidae)

“…Furthermore, Kinipling [10] argues that insect exposure to ionizing radiation sterilizes them by inducing dominant fatal mutations in their genetic makeup that can effectively suppress and eliminate numerous lepidopteran insect pests. Other researches have reported that gamma irradiation induced insect sterility and disturbed the life span of the produced progeny that were in relation to the irradiation doses and the irradiated stage [11][12][13][14] . Therefore, the current research was designed to study the influence of gamma radiation on some biological features of S. frugiperda as alternative clean control tool.…”