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Hormetic Effects of Early Juvenile Radiation Exposure on Adult Reproduction and Offspring Performance in the Cricket (Acheta domesticus)

Exposure to low-dose ionizing radiation can have positive impacts on biological performance—a concept known as hormesis. Although radiation hormesis is well-documented, the predominant focus has been medical. In comparison, little research has examined potential effects of early life radiation stres...

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Autores principales: Shephard, Alexander M., Aksenov, Vadim, Tran, Jonathan, Nelson, Connor J., Boreham, Douglas R., Rollo, C. David
Formato: Online Artículo Texto
Lenguaje:English
Publicado: SAGE Publications 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6130088/
https://www.ncbi.nlm.nih.gov/pubmed/30210269
http://dx.doi.org/10.1177/1559325818797499
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author Shephard, Alexander M.
Aksenov, Vadim
Tran, Jonathan
Nelson, Connor J.
Boreham, Douglas R.
Rollo, C. David
author_facet Shephard, Alexander M.
Aksenov, Vadim
Tran, Jonathan
Nelson, Connor J.
Boreham, Douglas R.
Rollo, C. David
author_sort Shephard, Alexander M.
collection PubMed
description Exposure to low-dose ionizing radiation can have positive impacts on biological performance—a concept known as hormesis. Although radiation hormesis is well-documented, the predominant focus has been medical. In comparison, little research has examined potential effects of early life radiation stress on organismal investment in life history traits that closely influence evolutionary fitness (eg, patterns of growth, survival, and reproduction). Evaluating the fitness consequences of radiation stress is important, given that low-level radiation pollution from anthropogenic sources is considered a major threat to natural ecosystems. Using the cricket (Acheta domesticus), we tested a wide range of doses to assess whether a single juvenile exposure to radiation could induce hormetic benefits on lifetime fitness measures. Consistent with hormesis, we found that low-dose juvenile radiation positively impacted female fecundity, offspring size, and offspring performance. Remarkably, even a single low dose of radiation in early juvenile development can elicit a range of positive fitness effects emerging over the life span and even into the next generation.
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spelling pubmed-61300882018-09-12 Hormetic Effects of Early Juvenile Radiation Exposure on Adult Reproduction and Offspring Performance in the Cricket (Acheta domesticus) Shephard, Alexander M. Aksenov, Vadim Tran, Jonathan Nelson, Connor J. Boreham, Douglas R. Rollo, C. David Dose Response Original Article Exposure to low-dose ionizing radiation can have positive impacts on biological performance—a concept known as hormesis. Although radiation hormesis is well-documented, the predominant focus has been medical. In comparison, little research has examined potential effects of early life radiation stress on organismal investment in life history traits that closely influence evolutionary fitness (eg, patterns of growth, survival, and reproduction). Evaluating the fitness consequences of radiation stress is important, given that low-level radiation pollution from anthropogenic sources is considered a major threat to natural ecosystems. Using the cricket (Acheta domesticus), we tested a wide range of doses to assess whether a single juvenile exposure to radiation could induce hormetic benefits on lifetime fitness measures. Consistent with hormesis, we found that low-dose juvenile radiation positively impacted female fecundity, offspring size, and offspring performance. Remarkably, even a single low dose of radiation in early juvenile development can elicit a range of positive fitness effects emerging over the life span and even into the next generation. SAGE Publications 2018-09-06 /pmc/articles/PMC6130088/ /pubmed/30210269 http://dx.doi.org/10.1177/1559325818797499 Text en © The Author(s) 2018 http://creativecommons.org/licenses/by-nc/4.0/ This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (http://www.creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).
spellingShingle Original Article
Shephard, Alexander M.
Aksenov, Vadim
Tran, Jonathan
Nelson, Connor J.
Boreham, Douglas R.
Rollo, C. David
Hormetic Effects of Early Juvenile Radiation Exposure on Adult Reproduction and Offspring Performance in the Cricket (Acheta domesticus)
title Hormetic Effects of Early Juvenile Radiation Exposure on Adult Reproduction and Offspring Performance in the Cricket (Acheta domesticus)
title_full Hormetic Effects of Early Juvenile Radiation Exposure on Adult Reproduction and Offspring Performance in the Cricket (Acheta domesticus)
title_fullStr Hormetic Effects of Early Juvenile Radiation Exposure on Adult Reproduction and Offspring Performance in the Cricket (Acheta domesticus)
title_full_unstemmed Hormetic Effects of Early Juvenile Radiation Exposure on Adult Reproduction and Offspring Performance in the Cricket (Acheta domesticus)
title_short Hormetic Effects of Early Juvenile Radiation Exposure on Adult Reproduction and Offspring Performance in the Cricket (Acheta domesticus)
title_sort hormetic effects of early juvenile radiation exposure on adult reproduction and offspring performance in the cricket (acheta domesticus)
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6130088/
https://www.ncbi.nlm.nih.gov/pubmed/30210269
http://dx.doi.org/10.1177/1559325818797499
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