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Доповіді НАН України. – 2007. – N 9. – С. 136–140.
Хромосомный гетероморфизм Octolasium lacteum (Oerley, 1885) (Oligochaeta, Lumbricidae) как результат гибридогенеза
А.В Гарбар, И.П. Онищук
Abstract
Karyotype Octolasium lacteum (Oerley, 1885) is studied. The chromosomal
formula is 2n = 13m + 23sm + 2st = 38; the fundamental number is FN = 76; and the
total diploid complement length is TCL= 176.91 ± 14.22 μm. The
heteromorphism of the first chromosome pair which is represented by a large
submetacentric and a smaller metacentric is discovered. Spermatogonial
meiosis of this species has some violations. Only 12 bivalents (at n = 19) are
discovered. The karyotype of this species is supposed to appear as a result
of hybridization of the related species with the chromosome numbers 2n = 36
and 2n = 40.
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