About crucians of periodically drying up steppe lakes of Northern Kazakhstan in the light of the modern domestic and foreign researches
2017
Goriunova, A.I. | Isbekov, K.B. | Asylbekova, S.J. | Danko, Y.K.
The biological and cytomorphological features peculiar to crucians are given in the experimental conditions of periodically drying up steppe lakes of Northern Kazakhstan where they are most distinct, and in some cases are unit, narrowly adapted which, undoubtedly, take place and in other regions, and in other ecosystems . The main observations are made on the crucians living in the lakes of Northern Kazakhstan excluding a natural invasion of the Chinese crucian from the rivers of the Ob-Irtysh system . The specific list of crucians, sexual structure of a silver crucian and emergence of its bisexual form in process of deterioration in conditions of dwelling of the drying-up lakes is defined . Data on researches of hybridization of crucians are provided in the steppe, periodically drying up lakes as one of forms of its adaptations . About emergence of hybrids with various extent of inheritance of parental signs during change of conditions of their dwelling . About stability of adaptive signs of hybrid individuals which allows them to exist as self-contained reproduced form . About need of carrying out padding researches by the Kazakhstan scientists on sort Carassius taxonomy for the Ob-Irtysh water system in general and in steppe lakes in particular
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