title: [On the problem of radioadaptation in small mammals (ecological specialization of species, radioresistance, hemopoiesis, immunity)].
abstract: The data illustrating ambivalent nature of radioresistance of rodents having different ecological specialization: wood mice (Apodemus uralensis Pallas 1811) and mole-voles (Ellobius talpinus Pallas 1770) to acute (laboratory experiment) and chronic (long-term inhabiting the East Ural Radioactive Trace - EURT) radiation action are presented. These species are greatly distinguished by a way of life, a migratory activity, an average life span etc. Numerous immunological, hematological disturbances were found in more radioresistant wood mice inhabiting in radioactively-polluted biogeocenosis (density of pollution 90Sr - 18.5 MBq/m2 = 500 Ci/km2). On the contrary there are no pathological shifts in more radiosensitive mole-voles from the EURT zone (density of pollution 90Sr - 37 MBq/m2 = 1000 Ci/km2). Comparative analysis of the hematological and immunological parameters and absorbed dose loads in rodents from radiocontaminated environment testify about the possibility of radioadaptation in a series of generations in Ellobius talpinus Pall. The leading role in development of radioadaptation of mole-voles belongs to ecophysiological peculiarities of the species.
authors.forename: E B
authors.initials: EB
authors.lastname: Grigorkina
authors.forename: I A
authors.initials: IA
authors.lastname: Pashnina
mesh_terms: D025041:Animal Migration; D000818:Animals; D004463:Ecology; D006410:Hematopoiesis / Q000528:radiation effects*; D007109:Immunity / Q000528:radiation effects; D011836:Radiation Tolerance / Q000276:immunology* / Q000502:physiology*; D011848:Radioactive Pollutants / Q000032:analysis*; D012377:Rodentia; D012426:Russia; D013045:Species Specificity; D013326:Strontium Radioisotopes / Q000032:analysis*
chemical_list: D011848:Radioactive Pollutants; D013326:Strontium Radioisotopes