Chromosomal and genomic mutations in Chironomus plumosus (L.) (Diptera, Chironomidae) from Novozybkov raion of Bryansk oblast

Belyanina, S. I.

doi:10.1134/s1022795412040023

Cited by 4 publications

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“…The sructurally small rearrangement in section 8 is designated by the arrow. with greater than 15% were triploids) [5]. This is pos sibly a case of species specificity of karyopool variabil ity under the given conditions in the given area.…”

Section: Discussionmentioning

confidence: 63%

“…Also, the radiosensitivity of the dipteran is known to be much higher at the early larval stage as compared to the adult organism [3]. We previ ously conducted a chromosome analysis of a number of benthos chironomid species from the Novozybk ovsky and the Klintsovsky raions of the Bryansk region [4][5][6][7] affected by the Chernobyl pollution [8]. Cyto genetic analysis of other chironomid from various eco logical niches is also necessary.…”

Section: Introductionmentioning

confidence: 99%

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Comparative chromosomal analysis of populations of phytophilous chironomidae Glyptotendipes glaucus (Mg.) from Chernobyl affected territory

Belyanina

2014

Russ J Genet

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The karyopools of the phytophilous chiromomid species of Glyptotendipes glaucus (Mg.) were studied. Chironomids originated from a number of reservoirs located in the Novozybkovsky raion of the Bry ansk region, which was affected by the Chernobyl radioactive release, and two reservoirs located in the Sara tov region. Differences in the inversion spectrum and frequencies, both among Bryansk and between Bryansk and Saratov populations, were found. There were no new inversions in the Novozybkovsky populations; how ever, structurally small rearrangements in long chromosomes were noted. Typical abnormalities included mosaicism of the chromosome morphotypes in cells of the same saline gland, which was especially distinctive in the larvae from the forbidden zone; decondensation of the telomere regions of chromosomes; and mosaic asynapsis of the chromosome IV homologs (up to complete disjunction). Also, several larvae were polyploids. Other species of Glyptotendipes inhabiting the Novozybkovsky reservoirs were represented by the single spe cies of G. paripes (near the Korchy settlement). The karyotypes of its several larvae were represented by an unorganized chromosomal substance. The other Glyptotendipes species seem to have lower adaptive abilities under the conditions in question and were eliminated from precatastrophe biotopes, while G. glaucus suc ceeded in adaptating to the new environment.

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Section: Discussionmentioning

confidence: 63%