Preservation of the genetic diversity of the sevryuga (Acipenser stellatus Pall) in conditions of artificial reproduction

According to the lactadehydrogenase locus, genetic diversity of 9 samples Volga sevryuga different origin was studied. In total, 733 pieces young sevryuga, 99 producers and 107 were four-year-olds with MPERZ. To assess variability lactate dehyrogenase allozymes, method polyacrylamide gel electrophoresis used, as most appropriate for assessing influence environment in natural domesticated populations. It is shown that grown conditions 6 Astrakhan sturgeon hatcheries, differs significantly from control group producers. The LDH-3 dehydrogenase locus represented by genotypes. 5 genotypes found producers, absence only genotype 100/112. Genotypes 70/112 112/122 are missing all plants MPERZ, while 70/70, which excess at also three plants. However, general, 2 out ARI. A study dynamics frequency alleles this set showed 4 ARI on MPRZ there no allele 112. persists. Thus, it due juveniles acute respiratory infections, a whole approaches indicators Therefore, preservation variety growing will contribute its diversity.