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[Chromosomal variability in natural populations of Chironomus cingulatus Meigen (Diptera, Chironomidae)]

https://arctichealth.org/en/permalink/ahliterature89315
Source
Tsitologiia. 2009;51(2):138-48
Publication Type
Article
Date
2009
Author
Istomina A G
Kiknadze I I
Gunderina L I
Source
Tsitologiia. 2009;51(2):138-48
Date
2009
Language
Russian
Publication Type
Article
Keywords
Animals
Chironomidae - genetics
Chromosome Mapping
Chromosomes - genetics
Europe
Karyotyping
Larva - genetics
Polymorphism, Genetic
Siberia
Abstract
Chromosomal polymorphism has been investigated in 7 natural populations from West Europe, West Siberia and Sakha Republic (Yakutia). The pool of polytene chromosome banding sequences of this species includes 15 banding sequences. The chromosomal polymorphism has been revealed in 5 of chromosomal arms. The most polymorphic is the arm B, there are 4 banding sequences in it. There are 3 banding sequences in the arm A. The arms D, E and G have 2 banding sequences. No chromosome rearrangements have been found in the arms C and F. The populations of Chironomus cingulatus differ clearly in the number and frequencies of banding sequences. This is evidence of that different gene sequences are adaptive in different populations.
PubMed ID
19371021 View in PubMed
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[Geographic differentiation of genomic DNA of Chironomus plumosus (Diptera, Chironomidae) in natural holarctic populations]

https://arctichealth.org/en/permalink/ahliterature89906
Source
Genetika. 2009 Jan;45(1):64-72
Publication Type
Article
Date
Jan-2009
Author
Gunderina L I
Kiknadze I I
Istomina A G
Batler M.
Source
Genetika. 2009 Jan;45(1):64-72
Date
Jan-2009
Language
Russian
Publication Type
Article
Keywords
Animals
Chironomidae - genetics
DNA - genetics
Europe
Genetics, Population
Genome, Insect
North America
Polymorphism, Genetic
Random Amplified Polymorphic DNA Technique
Siberia
Abstract
Using RAPD markers, polymorphism and differentiation of genomic DNA was examined in seven natural populations of Chironomus plumosus from Europe, Siberia, and North America. All these populations showed high polymorphism of genomic DNA. The Palearctic and Nearctic populations of this species were not statistically significantly different in the genomic DNA polymorphism level. The genetic distance (GD), which characterizes the extent of intraspecific differentiation of population genetic structure, was determined among the natural populations of C. plumosus. The genetic distance was on average 0.0245. It was demonstrated that genetic structures of the Palearctic and Nearctic populations of C. plumosus was differentiated to a higher extent than in Palearctic. However, the genetic distances between the populations from different zoogeographical zones (0.313) did not exceed the level characteristic of the among-population differences, which do not disturb the species genetic integrity.
PubMed ID
19239099 View in PubMed
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[The chromosomal polymorphism and divergence of populations in Chironomus nuditarsis Str. (Diptera, Chironomidae)]

https://arctichealth.org/en/permalink/ahliterature79950
Source
Tsitologiia. 2006;48(7):595-609
Publication Type
Article
Date
2006
Author
Kiknadze I I
Michailova P.
Istomina A G
Golygina V V
Int Panis L.
Krastanov B.
Source
Tsitologiia. 2006;48(7):595-609
Date
2006
Language
Russian
Publication Type
Article
Keywords
Animals
Chironomidae - genetics
Chromosome Banding
Chromosomes - genetics
Europe
Karyotyping
Larva - genetics
Polymorphism, Genetic
Siberia
Abstract
The karyotype structure and chromosomal polymorphisms were investigated in 6 natural and 2 laboratory populations of Chironomus nuditarsis from Europe and Asia. The pool of rearranged polytene chromosome banding sequences of this species was determined that includes 16 inversion banding sequences and sequences with giant DNA-knobs (ndtG1k, ndtG2k). Obvious differences were demonstrated in the level of chromosomal polymorphism between European and Asian (Siberian) populations: the former were highly polymorphic, while the latter were practically monomorphic. It was suggested to consider the Siberian populations as marginal one. Cytogenetic distances between populations of C. nuditarsis as well between C. nuditarsis and the related species C. plumosus were estimated. The data obtained show that chromosomal rearrangements play a very important role in cytogenetic divergence of populations.
PubMed ID
17087150 View in PubMed
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[The geographic varyability of the polytene chromosome banding sequence of non-biting midje Chironomus pseudothummi str. (Diptera, Chironomidae)]

https://arctichealth.org/en/permalink/ahliterature92332
Source
Tsitologiia. 2008;50(6):539-48
Publication Type
Article
Date
2008
Author
Kiknadze I I
Broshkov A D
Istomina A G
Gunderina L I
Vallenduuk H.
Source
Tsitologiia. 2008;50(6):539-48
Date
2008
Language
Russian
Publication Type
Article
Keywords
Animals
Base Sequence
Chironomidae - classification - genetics - ultrastructure
Chromosome Banding
Chromosomes - ultrastructure
Heterozygote
Inversion, Chromosome
Karyotyping
Larva - genetics - ultrastructure
Netherlands
Phylogeny
Polymorphism, Genetic
Russia
Abstract
The karyotypes and chromosomal polymorphism of Chironomus pseudothummi were investigated in different parts of its range. It was established that chromosomal variability in the natural populations of this species was represented mainly by the inversion polymorphism of arm G. Only rare and unique inversions were found as heterozygous in arms C, D, and E. In total, the 14 banding sequences of polytene chromosomes form the banding sequences pool of Ch. pseudothummi. Geographic differences in distribution of chromosomal banding sequences throughout the range were established. The presence of banding sequences pstG1 and pstG2 is characteristic of European populations. Banding sequence pstG1 was completely vanished with simultaneous increase in frequency of pstG2 and appearance of new inversion banding sequence pstG3 in Siberian populations. The differences in the set of the rare and unique inversions in arms C, D, and E between west-European and west-Siberian populations were revealed.
PubMed ID
18727406 View in PubMed
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