Наукові видання Біологічний факультет
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Документ The ploidy and genetic structure of hybrid population of water frogs Pelophylax esculentus complex (Amphibia, Ranidae) of Ukraine fauna(Cytology and Genetics, 2010) Mezhzherin, S.V.; Morozov-Leonov, S.Yu.; Rostovskaya, O.V.; Shabanov, D.A.; Sobolenko, L.Yu.The complex study, including allozyme variability and cytometry of hybrid populations of green frogs Pelophylax esculentus (L., 1758) complex has confirmed that the only region of Ukraine where allodip loid are encountered frequently is the Severski Donets basin (9% of all hybrids). In other areas, only two poly ploidy hybrids (0.9%) and one probably autopolyploid individual of each parental species have been regis tered. According to allozyme specters, all three polyploidy hybrids from the Severski Donets basin were males and belonged to biotype P. esculentus (=lessonae) – 2 ridibundus, and their population in this region has halved during the past decade.Документ A case of natural triploidy in European diploid green toad (Bufo viridis), with some distributional records of diploid and tetraploid toads(Russian Journal of Herpetology, 2007) Borkin, L.J.; Shabanov, D.A.; Brandler, O.V.; Kukushkin, O.V.; Litvinchuk, S.N.; Mazepa, G.A.; Rosanov, J.M.A triploid female (3n = 33) was found in diploid species Bufo viridis from the Crimea Peninsula, Ukraine. The case is recognized as an occasional autotriploidy. No morphological differences were found between this triploid female and other diploid specimens of the sample. Three categories of triploids in the Bufo viridis group are classified. Based on six green toad samples identified by chromosome number, the distribution of diploid and polyploid toads in Kazakhstan is discussed.