Analysis of rodent populations in technogenically transformed areas (with reference to Apodemus (S.) uralensis from the EURT zone)

Grigorkina, E. B.; Olenev, G. V.; Modorov, M. V.

doi:10.1134/s1067413608040085

Cited by 13 publications

(4 citation statements)

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“…In addition, the number of structural anomalies of leukocytes increased, and there were signs of abnormal mitosis as well as some indications of the haemopoietic process being more tensions. A characteristic feature was a reduction in the spleen index in the background increase the relative weight of the adrenal glands (Grigorkina et al, 2008). However, these studies were not conducted to take into account the population size.…”

Section: Discussionmentioning

confidence: 99%

“…(Nurtdinova & , 2004;Mukhacheva et al, 2010). Similarly, on the ruderal meadow in the EURT area, this rodent is the most numerous of the small mammal fauna (Grigorkina et al, 2008). High numbers of pygmy mice within the EURT area can be located in birch groves if there are tier shrubs or dwarf shrubs (rose, cherry, raspberry) present.…”

Section: Methodsmentioning

confidence: 97%

“…Based on our own observations and the long-term monitoring of mouse-like rodent populations in the EURT zone (Grigorkina et al, 2008;Grigorkina & Olenev, 2013), an abundance of animals from 1 to 15 ind./100 trap-day was considered a small population size, from 15 to 30 ind./100 trap-day was a medium population size, and above 30 ind./100 trap-day was a large population size.…”

Section: Methodsmentioning

confidence: 99%

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Stress-associated radiation effects in pygmy wood mouseApodemus uralensis(Muridae, Rodentia) populations from the East-Urals Radioactive Trace

Orekhova

Modorov

2016

Stress

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This work is based on the comparative analysis of data obtained in the course of monitoring pygmy wood mouse populations (Apodemus uralensis Pallas, 1811) in the East-Urals Radioactive Trace (EURT) area and background territories. The effect of population size and its interaction with the radioactivity on biochemical parameters in the spleen and adrenal glands was studied. The concentrations of total lipids, proteins, DNA and RNA, activity of glucose-6-phosphate isomerase and catalase as well as the level of lipid peroxidation (LPO) were evaluated. The functional-metabolic shifts seen with large population sizes were characterized by delipidisation of adrenocortical cells, increased LPO as the main mechanism for steroidogenesis, growth of the protein components of the adrenal glands to maintain their hyperfunction, as well as immunosuppression associated with the restriction of carbohydrates providing splenocytes, reduction of DNA synthesis, and the development of a pro-/antioxidant imbalance. Reactivity of the neuroendocrine and hematopoietic systems of animals experiencing a high population density was higher in the EURT zone compared with the reference group. This difference can be explained by the additional stress from the chronic radiation exposure. The level of LPO, catalase activity, and DNA/protein ratio in the spleen and the total protein content in the adrenal glands were the most sensitive to the interaction of population size and radiation exposure. The harmful effect (distress) of the interaction of non-radiation and radiation factors can manifest when there is a population abundance above 30 ind./100 trap-day and a radiation burden which exceeds the lower boundary of the Derived Consideration Reference Levels, which is above 0.1 mGy/day.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 97%

Section: Methodsmentioning

confidence: 99%

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Stress-associated radiation effects in pygmy wood mouseApodemus uralensis(Muridae, Rodentia) populations from the East-Urals Radioactive Trace

Orekhova

Modorov

2016

Stress

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“…The modern fauna of the Reserve comprises 48 species of mammals, including six species of insectivores and 20 species of rodents ( Ushkov 1993 ). Valuable sources of information on the habitat distribution of small mammals in this area are numerous ecological studies of mass species, such as herb field mouse ( Apodemus uralensis ), bank vole ( Myodes glareolus ), field vole ( Microtus agrestis ), as well as species requiring special methods of trapping – the northern mole vole ( Ellobius talpinus ) or European mole ( Talpa europaea ), for example ( Kolcheva and Olenev 1991 , Olenev 1995 , Evdokimov 2002 , Maklakov et al 2004 , Grigorkina et al 2008 , Nesterkova 2014 , Modorov 2016 , Olenev and Grigorkina 2016 , Orekhova and Modorov 2016 , Cheprakov and Chernousova 2020 , Orekhova 2020 ) .…”

Section: Introductionmentioning

confidence: 99%

Small mammals of background areas in the vicinity of the Karabash copper smelter (Southern Urals, Russia)

Mukhacheva¹,

Davydova²,

Sozontov³

2022

BDJ

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The dataset contains records of small mammals (Eulipotyphla and Rodentia) collected in the background (unpolluted) areas in the vicinity of Karabash copper smelter (Southern Urals, Russia) and the territory of the Sultanovskoye deposit of copper-pyrite ores before the start of its development. Data were collected during the snowless periods in 2007 (18 sampling plots), 2008–2010 (13 plots annually), 2011 (30 plots) and 2012–2014 (19 plots annually). The capture of animals was carried out in different types of forests (pine, birch, mixed and floodplain), sparse birch stands, reed swamps, marshy and dry meadows, border areas, a household waste dump, areas of ruderal vegetation and a temporary camp. Our study of small mammals was conducted using trap lines (snap and live traps). During the study period, 709 specimens of small mammals were caught, which belonged to five species of shrews and 13 species of rodents. The dataset may be highly useful for studying regional fauna and the distribution of species in different habitats and could also be used as reference values for environmental monitoring and conservation activities. Our dataset contains new information on occurrences of small mammals. It includes the peculiarities of their habitat distribution in the background areas in the vicinity of the large copper smelter and the deposit of copper-pyrite ores before the start of its development (Chelyabinsk Oblast, Russia). All occurrence records of 18 mammal species with georeferencing have been published in GBIF.

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Hematological indicators in pygmy wood mouse Apodemus uralensis (Muridae, Rodentia) populations as markers of the environmental radiation exposure: East Urals radioactive trace (Russia)

Orekhova

2018

Environ Sci Pollut Res

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The hematological effects of chronic radiation exposure in males of the pygmy wood mouse (Apodemus uralensis Pall., 1811) from the East Urals radioactive trace (EURT) area were assessed, taking into account population abundance and reproductive status (immature, ripening, and mature yearlings). For this purpose, we analyzed the morpho-functional characteristics of erythrocytes (red cell indices [MCV, MCH, MCHC], red cell count, activity of antioxidant enzymes [GSH-Px, CAT], lipid peroxidation, glycolysis, osmotic resistance, methaemoglobin content) and blood plasma components (free hemoglobin, total lipids, total cholesterol, and glucose) in the background territory and the EURT area; these areas have a density of soil contamination with Sr of 12,851 and 198 kBq × m, respectively (four and two order of magnitude higher than the background value). The data indicate the "hyperfunctional" state of the erythrocyte, aimed at activation of the gas transport function of blood in the radioactive environment. This, as a consequence, determines the insufficiency of energy supply of the cell defense system necessary to maintain the structural integrity of the membrane. Intensification of membrane lipid peroxidation, reduction of osmotic resistance and GSH-Px activity in red cells, an increase in the degree of intravascular hemolysis, and tendency towards erythropenia indicate the processes of accelerated aging of erythrocytes and their more pronounced destruction in the circulatory bed. The level of the hematological response increased with increasing radiation burden and was more pronounced with a large population size. The interaction effect of "overpopulation" and "radioactive pollution" was observed to a lesser degree for ripening males, and was very small for sexually mature animals. Immature males from the EURT head part with internal whole-body radiation doses of 0.0045-0.35 mGy/day can be considered as the most sensitive group to the factors synergy, including radiation damage and overabundance population.

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Analysis of rodent populations in technogenically transformed areas (with reference to Apodemus (S.) uralensis from the EURT zone)

Cited by 13 publications

References 5 publications

Stress-associated radiation effects in pygmy wood mouseApodemus uralensis(Muridae, Rodentia) populations from the East-Urals Radioactive Trace

Stress-associated radiation effects in pygmy wood mouseApodemus uralensis(Muridae, Rodentia) populations from the East-Urals Radioactive Trace

Small mammals of background areas in the vicinity of the Karabash copper smelter (Southern Urals, Russia)

Hematological indicators in pygmy wood mouse Apodemus uralensis (Muridae, Rodentia) populations as markers of the environmental radiation exposure: East Urals radioactive trace (Russia)

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