E. V. Kotenkova

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The wild-type Bacillus subtilis strain 8130 secreted metabolites that stimulated two to three times the growth of the test cultures of lactic acid bacteria. It exhibited endoglucanase activity that depended on the composition of nutrient medium. The addition of the product of two-stage culturing of B. subtilis 8130 to the diet of pigs (0.2% of fodder(More)
The neurotransmitter serotonin is implicated in the regulation of various forms of behavior, including aggression, sexual behavior and stress response. The rate of brain serotonin synthesis is determined by the activity of neuronal-specific enzyme tryptophan hydroxylase 2. The missense C1473G substitution in mouse tryptophan hydroxylase 2 gene has been(More)
The wild-type Bacillus subtilis strain 8130 secreted metabolites that stimulated two to three times the growth of the test cultures of lactic acid bacteria. It exhibited endoglucanase activity that depended on the composition of nutrient medium. The addition of the product of two-stage culturing of B. subtilis 8130 to the diet of pigs (0.2% of fodder(More)
418 The receptor mechanisms of the chemical signals influences underlying species integrity are at the very initial stage of investigation at the present time. In cur rent study test subjects were two sympatric species which do not hybridize under natural conditions: house mouse (Mus musculus) and mount—building mouse (M. spicilegus) as well as laboratory(More)
236 The superspecific complex Mus musculus s. l. consists of two different groups. The first group comprises commensal species M. musculus, M. domesticus , and M. castaneus , and the second group includes the wildliving species M. spretus, M. macedonicus , and M. spicilegus [1]. Formation of the commensal life style during evolution is one of the most(More)
406 The study of mother–offspring interactions at various stages of ontogeny is important for understanding physiological characteristics, both speciesand individual-specific, and the formation of adult behavior [1]. These processes during the lactation period have been studied well in rodents and lagomorphs. The prepubertal period is less investigated. In(More)
The maternal influence on rabbits’ growth and development at various ontogenetic phases is studied. The practical use of the undertaken research is discussed. Data on how the mother influences the microbiocenosis development of her youngs’ intestinal tract are considered. The role of coprophagy in the symbiotic digestion of young rabbits and the ontogenetic(More)
We used two methods to study the responses of representatives of three subspecies (Mus musculus musculus, M. m. wagneri, M. m. gansuensis) to the olfactory signals of con- and heterospecific individuals: (1) paired presentation of odor sources; and (2) modification of the “habituation” method—“habituation generalization.” To confirm the data obtained with(More)
Some physiological parameters that determine quality of male sperm (its concentration, spermatozoa morphology) and testicle size vary in integrity, i.e. the bigger are testicles the higher is sperm quality. Therefore, the estimate of testicles relative mass is often used as a characteristic of sperm competitive ability when comparing phylogenetically close(More)