Morphological abnormalities in gall‐forming aphids in a radiation‐contaminated area near Fukushima Daiichi: selective impact of fallout?
Open Access
- 13 January 2014
- journal article
- research article
- Published by Wiley in Ecology and Evolution
- Vol. 4 (4), 355-369
- https://doi.org/10.1002/ece3.949
Abstract
To evaluate the impact of fallout from the Fukushima Daiichi Nuclear Power Plant accident on organisms, this study compared the morphology and viability of gall-forming aphids between the Fukushima population and control populations from noncontaminated areas. This study, in particular, focused on the morphology of first-instar gall formers derived from the first sexual reproduction after the accident. Of 164 first instars from Tetraneura sorini galls collected 32 km from Fukushima Daiichi in spring 2012, 13.2% exhibited morphological abnormalities, including four conspicuously malformed individuals (2.4%). In contrast, in seven control areas, first instars with abnormal morphology accounted for 0.0–5.1% (on average, 3.8%). The proportions of abnormalities and mortality were significantly higher in Fukushima than in the control areas. Similarly, of 134 first instars from T. nigriabdominalis galls, 5.9% exhibited morphological abnormalities, with one highly malformed individual. However, of 543 second-generation larvae produced in T. sorini galls, only 0.37% had abnormalities, suggesting that abnormalities found in the first generation were not inherited by the next generation. Although investigation is limited to one study site, this result suggests that radioactive contamination had deleterious effects on embryogenesis in eggs deposited on the bark surface, but a negligible influence on the second generation produced in closed galls. Furthermore, analysis of both species samples collected in spring 2013 indicated that the viability and healthiness of the aphids were significantly improved compared to those in the 2012 samples. Thus, the results of this study suggest the possibility that a reduced level of radiation and/or selection for radiation tolerance may have led to the improved viability and healthiness of the Fukushima population.Keywords
This publication has 64 references indexed in Scilit:
- Tree rings reveal extent of exposure to ionizing radiation in Scots pine Pinus sylvestrisTrees, 2013
- The biological impacts of the Fukushima nuclear accident on the pale grass blue butterflyScientific Reports, 2012
- Abundance of birds in Fukushima as judged from ChernobylEnvironmental Pollution, 2012
- Reduced abundance of insects and spiders linked to radiation at Chernobyl 20 years after the accidentBiology Letters, 2009
- Amphibian malformations and inbreedingBiology Letters, 2008
- Malformation of True Bug (Heteroptera): a Phenotype Field Study on the Possible Influence of Artificial Low‐Level RadioactivityChemistry & Biodiversity, 2008
- Species richness and abundance of forest birds in relation to radiation at ChernobylBiology Letters, 2007
- Elevated frequency of abnormalities in barn swallows from ChernobylBiology Letters, 2007
- Developmental Selection Against Developmentally Unstable Offspring and Sexual SelectionJournal of Theoretical Biology, 1997
- Gall usurpation by the gall-forming aphid,Tetraneura sorini(Insecta Homoptera)Ethology Ecology & Evolution, 1997