%0 Journal Article %@ 1993-0771 %A Garbar, А. V. %A Onyschuк, І. Р. %A Mezhzherіn, S. V. %D 2009 %F zu2:9701 %I International Journal of Plant and Animal Cytogenetics, Karyosystematics, and Molecular Systematics %J Comparative Cytogenetics %K earthworms, Octolasion, Octodrilus, polyploidy, genetic structure, morphology. %N 2 %P 131-141 %T Polyploid races, genetic structure and morphological features of the earthworm Octodrіlus transpadanus (Rosa, 1884) (Oligohaeta: Lumbricidae) in the Ukraine %U http://eprints.zu.edu.ua/9701/ %V 3 %X Kariological investigation of the earthworm Octodrilus transpada-nus (Rosa, 1884) in the Ukraine showed that this species is represented by at least three races of different ploidy with the basic chromosome number n=15. Strict geographic heterogeneity of electrophoretic spectra of different populations was registered: south-eastern populations (7n=105) are characterized by a clonal structure, whereas western (from 3n = 45 to 4n = 60) and south-western (2n=30) ones have a high level of polymorphism. The Crimea sample (4n=60) is well isolated, has no clonal structure and is characterized by a series of specifi c alleles , which are absent in forms from continental Ukraine. All the forms turned out to be well