Biology

Potamogetonaceae in Herbarium SSU (Sarat). Part 1

Authors: Arkhipova E. A., Boldyrev V. A., Stepanov M. V.

The article presents the results of the inventory of herbarium collections of eight species of Potamogetonaceae, stored in the Herbarium of SSU, a database of locations of these species, including 101 record from the territory of Astrakhan, Volgograd, Penza, Samara, Saratov region and Western Kazakhstan.

Rare Spring Ephemeroids Flora of the Volga Upland

Authors: Vasjukov V. M.

28 species of vascular plants of the Volga Upland – rare spring ephemeroids in need of protection and recommended for inclusion in the Red Data Book of the Volga basin.

Role of Sulfonylurea Receptor in the Development of Stress-induced Hemorrhagic Cerebral Infarction in Newborn Rats

Authors: Semyachkina-Glushkovskaya O. V., Gekalyuk A. S., Sindeeva O. A., Abdurashitov A. S.

In this article, we develop a model of hemorrhagic infarct of brain in neonatal rats. The results of histological analysis showed that on the next day after exposure to stress sound (120 dB) for 2 hours, there are small focal subcortical hemorrhage, the brain edema, hypoxia and accumulation of blood area of in macro- and microcirculation. Speckle imaging of cerebral circulation revealed hyperperfusion of brain tissue with increase size of the cerebral veins in newborn rats with stress-induced intracranial hemorrhages.

Realization Systemically – Activity Approach at Biology Lessons within Fgos

Authors: Reshetnikova T. B., Nasyrova I. E., Reshetnikova T. B.

System and activity approach – a teoretiko-methodological basis of introduction of FGOS. Article is devoted to questions of introduction of system and activity approach in process of training of biology at concrete rural school. In article results of progress of pupils of 5– 6 classes and quality of their training for two academic years are analyzed. Positive dynamics of quality of training is noted.

Evaluation of Reproduction Conditions of Commercial Fish in Iriklin Reservoir to the Juvenile Fish Productivity

Authors: Ermolin V. P., Belianin I. A., Tiulin D. Y.

Reproduction conditions of commercial fish in Iriklin Reservoir have been investigated. There is a significant difference in reproduction conditions of the certain species. There are quite favorable condi- tions for a perch. Reproduction conditions for a roach in certain stretches of the reservoir vary from quite favorable to favorable. Reproduction conditions of the rest of commercial fish species are quite unfavorable. 

The Variability of Some Morphological Parameters Calophaca Wolgarica in the Populations of the Volgograd Region

Authors: Petrova N. A., Kashin A. S., Pastuhova A. I., Shilova I. V.

It is shown that habitat conditions have a strong influence on the shape and vitality of the state of the individual Calophaca wolgarica. The most favorable conditions for the growth of Calophaca wolgarica in the Volgograd region are aligned sites with non-light-chestnut fairly rich soils in shrub-grass and couch-grass communities on the edges of the belts, on which there is no mowing and minimal grazing.

Heterogeneity of Bodies Wheat under the Maintenance of Pigments Photosynthesis

Authors: Stepanov S. A., Gagarinckiy E. L., Kasatkin M. Y., Ilyin N. S.

Data by definition of the maintenance of pigments of photosynthesis (a chlorophyll and carotenoid) in leaves and top междоузлии a stalk of summer soft wheat at the moment of flowering are cited. Distinction by quantity of pigments in different zones of a plate top leaf at investigated grades is established: a chlorophyll – 0,72–5,1; carotenoid – 0,37– 1,3 mg/g of fresh weight. Increase of the maintenance of pigments from bottom to the top zone of a vagina top leaf and междоузлия is revealed.

The Results of the Inventory of the Lepidoptera Fauna (Insecta: Lepidoptera) of the Volga-Ural Region

Authors: Anikin V. V., Zolotuhin V. V., Sachkov S. A.

Presents the distribution of 3489 species of Lepidoptera from 83 families on the basic administrative units of the region. To the base list of E. Eversmann added 2209 species, 35 species were removed from the list as incorrectly identified previously, reliably disappeared in the region or accidentally introduced. Among the newly discovered species 2 were new for Europe and 3 for Russia.

The Effect of Emotional and Severe Pathological Stresses on the Level of Arterial Pressure and the Production of Testosterone in Female and Male Rats

Authors: Sindeev S. S., Zinchenko E. M., Ulanova M. V., Gekalyuk A. S., Agranovich I. M., Semyachkina-Glushkovskaya O. V., Kassim M., Sindeeva O. A.

The serum level of testosterone is indicator of organismcapacity. Chronic stress is accompanied by development of more pronounced arterial hypertension in males compared with females that is associated with the decrease in production of testosterone in males but not in females.

Microbiological Indication of Soil above the Underground Storage of Natural Gas

Authors: Pleshakova E. V., Reshetnikov M. V.

Microbiological indication of soil over Stepnovskoye underground storage of natural gas was carried out on the basis of estimating the number of heterotrophic, hydrocarbon-oxidizing and methylotrophic bacteria. Increased number of microorganisms of test physiological groups were found, indicating the admission of methane in the upper layers of the soil. The possibility of using hydrocarbon-oxidizing and methylotrophic bacteria for environmental monitoring of soil in the areas of natural gas storage facilities was shown.

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