Ulyanova V.V., Vankov P.Yu., Zelenikhin P.V., Shah Mahmud R., Kolpakov A.I., Ilinskaya O.N. Secreted alkaline ribonucleases of micromycetes

335

Shakurova N.V., Semenov E.I., Savva V.B. Effect of mycotoxins on the ultrastructure of cortical elements in pig nephrons

350

Zakirova E.Yu., Aimaletdinov A.M., Alexandrova N.M., Ganiev I.M., Sofronova S.A., Valeeva A.N., Garanina E.E., Rizvanov A.A. Developing a species-specific genetic agent for treatment of skin defects in dogs

361

Elbahnasawy A.S., Valeeva E.R. Effects of rosemary (Rosmarinus officinalis L.) and thyme (Thymus vulgaris L.) essential oils on bone tissue in rats

381

Biktasheva L.R., Saveliev A.A., Selivanovskaya S.Y., Galitskaya P.Y. Bacterial and fungal community shifts during self-restoration of oil-polluted soils

393

Gorokhova O.G. Composition and structure of phytoplankton communities in the Samara River (Saratov Reservoir basin)

413

Rakhuba A.V. Assessment of the influence exercised by the hydrodynamic regime on the phytoplankton development and the water quality of the Kuibyshev Reservoir

430

Tereshchenko V.G., Shakirova F.M., Latypova V.Z., Stepanova N.Yu., Anokhina O.K. The population status of pikeperch, Sander lucioperca (Linnaeus, 1758), in the Kuibyshev Reservoir (2000–2018)

445

Mishustin S.S., Polynova G.V. The Impact of predation on the abundance of steppe runners, Eremias arguta deserti (Gmelin, 1789), in semi-deserts of the southeastern part of the Lower Volga region

461

Sukhoveeva O.E. Problems of modelling carbon biogeochemical cycle in agricultural landscapes

473