Fitness costs of increased cataract frequency and cumulative radiation dose in natural mammalian populations from Chernobyl
Lehmann, P., Boratynski, Z., Mappes, T., Mousseau, T. A., & Møller, A. P. (2016). Fitness costs of increased cataract frequency and cumulative radiation dose in natural mammalian populations from Chernobyl. Scientific Reports, 6, Article 19974. https://doi.org/10.1038/srep19974
Julkaistu sarjassa
Scientific ReportsTekijät
Päivämäärä
2016Oppiaine
Ekologia ja evoluutiobiologiaBiologisten vuorovaikutusten huippututkimusyksikköEcology and Evolutionary BiologyCentre of Excellence in Biological Interactions ResearchTekijänoikeudet
© 2016 the Authors. Published by Nature Publishing Group. This is an open access article licensed under a Creative Commons Attribution 4.0 International License.
A cataract is a clouding of the lens that reduces light transmission to the retina and it decreases the visual acuity of the bearer. The prevalence of cataracts in natural populations of mammals and their potential ecological significance, is poorly known. Cataracts have been reported to arise from high levels of oxidative stress and a major cause of oxidative stress is ionizing radiation. We investigated whether elevated frequencies of cataracts are found in eyes of bank voles Myodes glareolus collected from natural populations in areas with varying levels of background radiation in Chernobyl. We found high frequencies of cataracts in voles collected from different areas in Chernobyl. The frequency of cataracts was positively correlated with age and in females also with the accumulated radiation dose. Furthermore, the number of offspring in female voles was negatively correlated with cataract severity. The results suggest that cataracts primarily develop as a function of ionizing background radiation, most likely as a plastic response to high levels of oxidative stress. It is therefore possible that the elevated levels of background radiation in Chernobyl affect the ecology and fitness of local mammals both directly through, for instance, reduced fertility and indirectly, through increased cataractogenesis.
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Julkaisija
Nature Publishing GroupISSN Hae Julkaisufoorumista
2045-2322Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/25529908
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Suomen AkatemiaRahoitusohjelmat(t)
Akatemiahanke, SALisätietoja rahoituksesta
The authors wish to thank Igor Chizhevsky and Gennadi Milinevski for logistic support and help. The project was funded by the Academy of Finland to T. Mappes (project number 268670). Z. Boratyński is a postdoctoral grantee from the Portuguese Foundation for Science and Technology (RH/BPD/84822/2012).Lisenssi
Ellei muuten mainita, aineiston lisenssi on © 2016 the Authors. Published by Nature Publishing Group. This is an open access article licensed under a Creative Commons Attribution 4.0 International License.
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