Radiation risk of mortality and reduced lifespan of daphnids gamma-irradiated at low doses

«Radiation and Risk», 2011, vol. 20, no. 1, pp.34-40

Authors

Sarapultseva E.I. – Associated Professor, PhD, C. Sc., Biol. Obninsk Institute of Nuclear Power Engineering National Research Nuclear. University “MEPHI”. Contacts: Studgorodok-1, Obninsk, Kaluga region, 249040 Russia. Tel.: +7(48439) 9-60-42; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it. .
Gorski A.I.1 – Lead. Researcher, C. Sc., Phys.-Math. Medical Radiological Research Center of the Russian Ministry of Health and Social Development, Obninsk.
Malina J.J. – PG student. Obninsk Institute of Nuclear Power Engineering National Research Nuclear University “MEPHI”.

Abstract

The results of daily based observations for the crustaceans Daphnia magna populations, irradiated at doses of 0.01; 0.1 and 1.0 Gy have been presented. The tables of lifespan have been used for the analysis of the daphnids’ survival. The dynamics of the proportion of survivors after acute gama-irradiation and the duration of daphnids' live span have been compared. Irradiation at dose of 0.1 Gy and more resulted in significant increased risk of daphnids’ mortality and shorten of their lifespan.

Key words
Ionizing radiation, low doses, radiation risks, lifespan, Daphnia magna.

References

1. Sarapultseva E.I. Spontaneous motor activity of infusorians Spirostomum ambiguum after γ-irradiation in a wide range of doses as an informative method of biotesting. Radiation Biology. Radioecology. 2008. Vol. 48, no. 3. PP. 346-348.

2. Sarapultseva E.I., Bychkovskaya I.B., Fedortseva R.F. Inheritance of dose-independent effects relatively small doses of radiation. Model experiments on Daphnia magna. Med. Radiology and Radiology Safety. 2009. Vol. 54, no. 6. PP. 11-15.

3. Sarapultseva E.I., Igolkina Yu.V. Inheritance of decrease in spontaneous motor activity in unicellular spirostomum ambiguum sponges after gamma irradiation in low doses. Radiation and Risk. 2008. Vol. 17, no. 3. PP. 54-58.

4. Sarapultseva E.I., Malina Yu.Yu., Sarapultsev B.I. Linear-threshold effects of gamma-irradiation of Daphnia magna in the range of small doses. Radiation and risk. 2007. V. 16, no. 2-4. PP. 32-37.

5. Sarapultseva EI, Malina Yu.Yu. Changes in the viability of Daphnia magna after gamma-irradiation in a range of relatively small doses. Radiation Biology. Radioecology. 2009. Vol. 49, no. 1. PP. 82-84.

6. Sarapultseva E.I., Fedortseva R.F., Bychkovskaya I.B. Non-stochastic decrease in the viability of the organism after weak radiation effects. Model experiments on Daphnia magna. Med. radiology and radiation safety. 2008. Vol. 53, no. 5. PP. 3-7.

7. Sakharov V.K. Radioecology. St. Petersburg-Moscow-Krasnodar, "Lan" Publ., 2006. 311 p.

8. Sharova I.Kh. Zoology of invertebrates. Moscow, VLADOS Publ., 1999. 280 p.

9. Modern Epidemiology. Eds: K. Rothman & S. Greenland. Lippincott Williamce& Wilkins, 1998. PP. 281-294.

10. Sarapultseva E.I., Bychkovskaya I.B. Peculiar low radiation effects as a risk factor. Assessment of organism viability in the model experiments with Daphnia magna. Int. J. Low Radiation. 2010. Vol. 7, no. 1. PP. 1-9.

11. Sarapultseva E.I., Bychkovskaya I.B. Unusual damaging effects of low radiation. Model experiments with protozoa and invertebrates. Proceeding of the 3d European IRPA. Helsinki, Finland, 14-18 June 2010. РP. 1-7.

Full-text article (in Russian)