Situation of the increasing pressure of genetic abnormalities in a diploid-polyploid of population spined loaches (Cypriniformes, Cobitidae, Cobitis)
DOI:
https://doi.org/10.15407/dopovidi2014.06.140Keywords:
Cobitidae, Cobitis, Cypriniformes, genetic abnormalities, population spined loachesAbstract
Genetic monitoring of a diploid-polyploid population of spined loach (Cobitis taenia s. lato) in the Irpen river (tributary of the Dnieper) has pointed unusually abrupt changes of its biot C. 2 elongatoides-tanaitica biotype with abnormal allozyme spectrum became to completely dominate. At the same time, individuals of this population also demonstrate a sharp increase in the number of binuclear erythrocytes. All these negative genetic processes occurred against the background of a declining population of the species in this river, which indirectly indicates a slight decrease in the fitness of individuals of this population.
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