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Effects of Chronic Low-Intensity Irradiation on Reproductive Parameters of the Root Vole (Alexandromys oeconomus): Responses of Parents and Offspring
Russian Journal of Ecology ( IF 1.1 ) Pub Date : 2020-05-01 , DOI: 10.1134/s1067413620030066
O. V. Ermakova , L. A. Bashlykova , O. V. Raskosha , N. N. Starobor

Radiation effects on reproduction have been studied in root voles from areas with increased contents of heavy natural radionuclides (HNRs). To assess reproductive parameters in a population exposed to radiation over many generations, two experiments have been performed at an interval of 25 years (in 1984 and 2009). The observed intensification of reproductive processes (in particular, an increase in the proportion of females and their fecundity) is evidence for an adaptive response of the population to chronic low-intensity irradiation that is aimed to counterbalance high embryonic and postnatal mortality. However, the results of inbred crossing confirm that heritable genetic damage caused by exposure to environmental HNRs is detected in the population even after 100 generations.

中文翻译:

慢性低强度辐照对根田鼠(Alexandromys oeconomus)生殖参数的影响:父母和后代的反应

已经在重天然放射性核素 (HNR) 含量增加的地区的根田鼠中研究了辐射对繁殖的影响。为了评估暴露于多代辐射的人群的生殖参数,以 25 年的间隔(1984 年和 2009 年)进行了两次实验。观察到的生殖过程集约化(特别是雌性比例及其繁殖力的增加)证明了人口对慢性低强度辐射的适应性反应,旨在抵消高胚胎和出生后死亡率。然而,近交杂交的结果证实,即使在 100 代之后,仍然在人群中检测到暴露于环境 HNR 引起的遗传性遗传损伤。
更新日期:2020-05-01
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