Situation of the increasing pressure of genetic abnormalities in a diploid-polyploid of population spined loaches (Cypriniformes, Cobitidae, Cobitis)

1Mezhzherin, SV, 1Tsyba, AA, 1Mezhzherina, DS, 1Pukhtaevitch, PP
1I. I. Schmalhausen Institute of Zoology of the NAS of Ukraine, Kyiv
Dopov. Nac. akad. nauk Ukr. 2014, 6:140-145
Section: Biology
Language: Russian

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.

Keywords: Cobitidae, Cobitis, Cypriniformes, genetic abnormalities, population spined loaches

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