Human actions have altered natural ecosystems worldwide. Among the many pollutants released to the environment, ionizing radiation can cause severe damage at different molecular and functional levels. The accident in the Chernobyl Nuclear Power Plant (1986) caused the largest release of ionizing radiation to the environment in human history. Here, we examined the impact of the current exposure to ionizing radiation on blood physiology biomarkers of adult males of the Eastern tree frog (Hyla orientalis) inhabiting within and outside the Chernobyl Exclusion Zone. We measured the levels of eight blood parameters (sodium, potassium, chloride, ionized calcium, total carbon dioxide, glucose, urea nitrogen, and anion gap), physiological markers of homeostasis, as well as of liver and kidney function. Levels of blood physiology biomarkers did not vary in function of the current exposure of tree frogs to ionizing radiation within the Chernobyl Exclusion Zone. Physiological blood levels were similar in frogs inhabiting Chernobyl (both in areas with medium-high or low radiation) than in tree frogs living outside Chernobyl exposed only to background radiation levels. The observed lack of effects of current radiation levels on blood biomarkers can be a consequence of the low levels of radiation currently experienced by Chernobyl tree frogs, but also to the fact that our sampling was restricted to active breeding males, i.e. potentially healthy adult individuals. Despite the clear absence of effects of current radiation levels on physiological blood parameters in tree frogs, more research covering different life stages and ecological scenarios is still needed to clarify the impact of ionizing radiation on the physiology, ecology, and dynamics of wildlife inhabiting radioactive-contaminated areas.

中文翻译：

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辐射对切尔诺贝利树蛙的血液生理生物标志物没有影响

人类行为改变了全世界的自然生态系统。在释放到环境中的众多污染物中，电离辐射可以在不同的分子和功能水平上造成严重的损害。切尔诺贝利核电站事故（1986年）导致人类历史上向环境释放最大规模的电离辐射。在这里，我们研究了当前电离辐射暴露对居住在切尔诺贝利禁区内外的东方树蛙（Hyla orientalis）成年雄性血液生理生物标志物的影响。我们测量了八项血液参数（钠、钾、氯、离子钙、总二氧化碳、葡萄糖、尿素氮和阴离子间隙）、体内平衡生理标志物以及肝肾功能的水平。血液生理学生物标志物的水平不会因切尔诺贝利禁区内树蛙当前暴露于电离辐射的情况而变化。居住在切尔诺贝利的青蛙（无论是在中高辐射还是低辐射地区）的生理血液水平与居住在切尔诺贝利以外仅暴露于背景辐射水平的树蛙相似。观察到的当前辐射水平对血液生物标志物没有影响可能是由于切尔诺贝利树蛙目前所经历的辐射水平较低的结果，但也因为我们的采样仅限于活跃繁殖的雄性，即潜在健康的成年个体。尽管目前的辐射水平对树蛙的生理血液参数明显不存在影响，但仍需要更多涵盖不同生命阶段和生态场景的研究来阐明电离辐射对生活在放射性环境中的野生动物的生理、生态和动态的影响。污染区域。