title: Cytogenetic description of the earthworm Drawida ghilarovi Gates, 1969 (Oligochaeta, Moniligastridae) from the southern Russian Far East.
abstract: Sixty-six specimens of the earthworm Drawida ghilarovi Gates, 1969 (Oligochaeta, Moniligastridae) from 15 localities of the southern Russian Far East were studied cytogenetically. We examined chromosome sets during mitosis and diakinesis as well as DNA content in the spermatogenous and somatic cell nuclei. The populations and morphs displayed no differences in karyotype and ploidy levels estimated in terms of both chromosome number and DNA mass index: n = 10, 2n = 20; c = 1.1 pg, 2c = 2.2 pg. We conclude that polyploidy as a species- or race-forming factor is not typical of these earthworms.
authors.affiliation: Far Eastern Federal University, Department of Cell Biology and Genetics, 27 Oktyabrskaya str., Vladivostok 690950, Russia.
authors.forename: Alim P
authors.initials: AP
authors.lastname: Anisimov
authors.affiliation: Institute of Biology and Soil Science, Far Eastern Branch of the Russian Academy of Sciences, 159 Av. Stoletiya Vladivostoku, Vladivostok 690022, Russia.
authors.forename: Galina V
authors.initials: GV
authors.lastname: Roslik
authors.affiliation: Institute of Water and Ecological Problems, Far Eastern Branch of the Russian Academy of Sciences, 65 Kim Yu Chena str., Khabarovsk 680000, Russia.
authors.forename: Gennady N
authors.initials: GN
authors.lastname: Ganin
keywords: Drawida; Karyotype; Moniligastridae; Oligochaeta; chromosomal set; earthworm; nuclear DNA content