Popis: |
Investigated the genetic variability of domesticated herds of the Russian sturgeon. This was selected three samples of fingerlings: the offspring of wild spawners and offspring domestizierung producers grown on Bertuliskan sturgeon hatcheries and the offspring domestizierung manufacturers grown at the hatchery Elektrogorsk TPP. Was investigated three polymorphic enzyme systems, the malate dehydrogenase (MDH), lactate dehydrogenase (LDH) and esterase (Ect). Genetic and biochemical studies carried out by electrophoresis. Review such factors as frequency of occurrence and level of heterozygosity. Investigated the relative abundance of Homo — and heterozygous genotypes in each enzyme system. To study morphological variability, we studied data on young Russian sturgeon caught from the Volga, Don and Kuban rivers, fingerling raised in a fish farm outside the range from the larval stage, fingerling raised in the conditions of the pilot fish-breeding workshop of the Novolipetsk metallurgical combine and fingerling raised in a fish farm using warm waste water of the Elektrogorskaya GRES-3 named after R. E. Klasson. We used both literary sources and our own data. The following features were selected for analysis: the number of beetles in the dorsal (Sd), lateral (Sl) and abdominal (Sv) rows. It is shown that the number of beetles in fingerlings grown in warm waters is significantly less than in fish from the natural environment. |