Impact of Sr-90 on morphometric indices and metallothioneins level in the soft tissues of Bradybaena fruticum inhabiting the regional radioactive wastes storage facility

«Radiation and Risk», 2017, vol. 26, No. 4, pp.43-51

DOI: 10.21870/0131-3878-2017-26-4-43-51

Authors

Lavrentyeva G.V.^1,2 – Assoc. Prof., C. Sc., Biol. ¹Bauman Moscow State Technical University (Kaluga Branch), ²Obninsk Institute for Nuclear Power Engineering of the National Research Nuclear University “MEPhI” (OINPE MEPhI), Obninsk. Contacts: 2, Bazhenova street, Kaluga, Russia, 248000. Tel.: +7(4842) 77-45-05; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it. .
Shoshina R.R.^1,2 – Engineer. ¹Bauman Moscow State Technical University (Kaluga Branch), ²Obninsk Institute for Nuclear Power Engineering of the National Research Nuclear University “MEPhI” (OINPE MEPhI), Obninsk.
Mirzeabasov O.A.² – Assoc. Prof., C. Sc., Teсh. Obninsk Institute for Nuclear Power Engineering of the National Research Nuclear University “MEPhI” (OINPE MEPhI), Obninsk.
Synzynys B.I.² – Prof., D. Sc., Biol. Obninsk Institute for Nuclear Power Engineering of the National Research Nuclear University “MEPhI” (OINPE MEPhI), Obninsk.

Abstract

The concept of reference animals and plants is the most elaborated approach used for the development of an ecocentric radiation protection strategy. However, the current set of ICRP reference species is not final. To justify the inclusion of new entities into the list of reference animals and plants special research on impact of radiation dose on selected candidates was carried out. The article presents results of study of impact of radiation from ⁹⁰Sr on morphometrics of shell, its height and diameter and the level of metallothioneins in mollusks Bradybaena fruticum inhabited the regional radioactive wastes storage facility. ⁹⁰Sr absorbed dose rate to the mollusks was calculated with the use of Monte Carlo method for scenaria of self-irradiation, irradiation from ⁹⁰Sr accumulated in the soil and the nettle). Reliable radiation-induced change in the shell height and the level of metallothioneins in the soft tissue of the mollusks was observed within the examined dose range. The requirements to the reference species and results of the study allow making supposition that the terrestrial mollusk Bradybaena fruticum may be considered as an alternative entity to be included in the list of reference species, height of its shell and the level of metallothioneins in the soft tissues may be considered as reference indicators.

Key words
Terrestrial mollusk Bradybaena fruticum, absorbed dose rate, Monte Carlo method, mollusk shell height, mollusk shell diameter, proteins of metallothioneins, ⁹⁰Sr specific activity, reference species, reference indicator, heavy metals.

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