Abstract
This study was conducted to examine the effect of gamma radiation on biological specimens. Thus, our concept is to clarify that exposure to accumulated dose of 0.2 Gy gamma rays (0.66 rad/Sec. dose rate) from Cs137 source induces cellular perturbations in the midgut epithelium of the F1 progeny of Blaps polycresta, therefore affecting nutrition and growth. Beetles were reared in laboratory conditions and the newly emerged adults were irradiated with the aforementioned dose. Histological and ultrastructure anomalies of midgut cells (digestive and regenerative cells) were observed by 72 h after radiation exposure to ensure that the cells will not return to control state. Retardation in the development of the F1 progeny was also noticed and beetles died through two weeks. In the light of these observations, biological tissue act as an indicator to the continuous exposure to environmental radiation.
Highlights
Environmental afflicts of ionizing radiation arose recently as a dominated research field
This study was conducted to examine the effect of gamma radiation on biological specimens
Our concept is to clarify that exposure to accumulated dose of 0.2 Gy gamma rays (0.66 rad/Sec. dose rate) from Cs137 source induces cellular perturbations in the midgut epithelium of the F1 progeny of Blaps polycresta, affecting nutrition and growth
Summary
Environmental afflicts of ionizing radiation arose recently as a dominated research field. Natural radiation exposures enhanced from many sources such as mineral processing and use, phosphate fertilizer (production and use) and fossil fuel combustion (UNSCEAR, 1988). Radiation that has been derived exogenously from the environment known to induce cellular alterations in higher eukaryotes (Daly, 2012). Ionizing radiation removes electrons from the orbital shells in the tissues they penetrate (Borek et al, 1993). Experimental evidence of insects exposed to different doses of gamma rays has confirmed cellular radiation damage (Kheirallah, 2016; Kheirallah et al, 2017). Low doses of radiation may elicit a broad range of biochemical and tissue responses as compared to high
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