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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)
Comparative analysis of the structure of small mammal communities has been performed in two European cities located in different biomes: Chisinau (2008–2009) and Yaroslavl (1994–2002). The parameters studied included abundance, species composition, similarity and difference of faunas, species diversity, and proportions of groups differing in predisposition(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)
The degree of development of the mechanisms of postcopulatory isolation was evaluated on the basis of experimental hybridization of representatives of three subspecies of M. musculus (M. m. musculus, M. m. wagneri, and M. m. gansuensis) and remote populations of the subspecies M. m. musculus. Experimental crosses between the different subspecies and(More)
In two-choice odor tests, it was shown that house and mound-building mice began to discriminate the species-specific odor of young at the age of 17 days. The mice investigated the odor of conspecific urine significantly longer than that of heterospecific urine, when the young donors of urine, were 17 days old or older. Thus, the species-specific odor(More)