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Gamma irradiation of resting eggs of Moina macrocopa affects individual and population performance of hatchlings / E. Zadereev [et al.] // J. Environ. Radioact. - 2017. - Vol. 175-176. - P126-134, DOI 10.1016/j.jenvrad.2017.05.002 . - ISSN 0265-931X
Кл.слова (ненормированные):
Cladocera -- Life cycle parameters -- Population performance -- Resting eggs -- ?-radiation -- Gamma rays -- Irradiation -- Life cycle -- Radiation effects -- Radioactive materials -- Sediments -- Cladocera -- Cycle parameters -- Dose response relationships -- Population performance -- Reproductive rates -- Resting eggs -- Sensitive parameter -- Zooplankton communities -- Radiation -- adolescent -- Cladocera -- contamination -- controlled study -- dose response -- female -- gamma irradiation -- gamma radiation -- hatchling -- human -- human experiment -- life cycle -- Moina macrocopa -- newborn -- nonhuman -- sediment -- zooplankton -- Animalia -- Cladocera -- Moina macrocopa
Аннотация: We investigated the effects of ?-radiation on the survival of resting eggs of the cladoceran Moina macrocopa, on the parameters of the life cycle of neonates hatched from the irradiated eggs and on the performance of the population initiated from irradiated eggs. The study showed that ?-radiation in a range of doses from the background level to 100 Gy had no effect on survival of irradiated eggs. The absorbed dose of 200 Gy was lethal to resting eggs of M. macrocopa. The number of clutches and net reproductive rate (R0) of hatchlings from eggs exposed to radiation were the strongly affected parameters in experiments with individual females. The number of clutches per female was drastically reduced for females hatched from egg exposed to 80–100 Gy. The most sensitive parameter was the R0. The estimated ED50 for the R0 (effective dose that induces 50% R0 reduction) was 50 Gy. Population performance was also affected by the irradiation of the resting stage of animals that initiated population. Populations that was initiated from hatchlings from resting eggs exposed to 100 Gy was of smaller size and with fewer juvenile and parthenogenetic females in comparison with control populations. Thus, we determined the dose-response relationship for the effect of gamma radiation on survival of resting eggs and individual and population responses of hatchlings from irradiated resting eggs. We conclude that for highly polluted areas contamination of bottom sediments with radioactive materials could affect zooplankton communities through adverse chronic effects on resting eggs, which will be transmitted to hatchlings at individual or population levels. © 2017 Elsevier Ltd

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Держатели документа:
Institute of Biophysics, Federal Research Centre Krasnoyarsk Scientific Centre, Siberian Branch, Russian Academy of Sciences, 50/50 Akademgorodok, Krasnoyarsk, Russian Federation
Siberian Federal University, 79 Svobodniy Ave., Krasnoyarsk, Russian Federation
Budker Institute of Nuclear Physics, 11 Akademika Lavrent'eva Ave., Novosibirsk, Russian Federation

Доп.точки доступа:
Zadereev, E.; Lopatina, T.; Oskina, N.; Zotina, T.; Petrichenkov, M.; Dementyev, D.

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