KARYOTYPE AND KARYOFUND OF CHIRONOMIDS POLYPEDILUM (PENTAPEDILUM) SORDENS
(DIPTERA, CHIRONOMIDAE)
S. I. Belyanina, N. A. Durnova
Saratov State Medical University, Russia;
Karyotypes and karyofund of chironomids Polypedilum (Pentapedilum) sordens (Van der Wulp, 1874) from
four water bodies of Saratov region have been analysed. 2n = 6, I(GAB) > II(CD) > III(EF). A cytophotochart of polytene chromosomes
of this species was composed, and discovered inversions were identified on its base. The level of inversion polymorphism is high.
There are 18 chromosome sequences in the karyofund. The frequency of heterozygote inversions is 1.6-2.5 per specimen. On the base
of this cytochart it is possible to produce chromosome charts of other species of subgenus Pentapedilum.
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