title: [Seasonal variability of the karyotype structure of Chironomus plumosus (Diptera, Chironomidae) from a biotope of Kaliningrad].
abstract: Chironomus plumosus larvae from the polluted Shkolnoe lake, Kaliningrad, have 2n = 8 and 2n = 8 + B. In winter season we found 11 types of hetero- and homozygous inversions in A, B, C, D, E, and F arms whereas in summer season we registered 7 types of the same inversions in A, B, C, D, and E arms. All inversions with exception of the inversion in arm C correspond to Hardy-Weinberg equilibrium. The arm IVG shows homozygous increase of centromeric heterochromatin more frequently in summer than in winter (34.4% as compared with 1.8%). The arm E has asynapsis 2 times less frequently in summer than in winter (21.4% as compared with 44.6%).
authors: N A
authors: NA
authors: Petrova
authors: N V
authors: NV
authors: Vinokurova
authors: M V
authors: MV
authors: Danilova
authors: V V
authors: VV
authors: Maslova
mesh_terms: D000818:Animals; D002683:Chironomidae / Q000187:drug effects / Q000235:genetics*; D007446:Chromosome Inversion / Q000139:chemically induced / Q000235:genetics; D002875:Chromosomes / Q000235:genetics / Q000648:ultrastructure; D002947:Cities; D005828:Genetics, Population; D019015:Geologic Sediments / Q000737:chemistry; D007621:Karyotyping; D007814:Larva; D019216:Metals, Heavy / Q000633:toxicity; D012426:Russia; D012469:Salivary Glands / Q000187:drug effects; D012621:Seasons; D014874:Water Pollutants, Chemical / Q000633:toxicity
chemical_list: D019216:Metals, Heavy; D014874:Water Pollutants, Chemical