The chromosomal polymorphism and divergence of populations in Chironomus nuditarsis Str. (Diptera, Chironomidae)

The chromosomal polymorphism and divergence of populations in Chironomus nuditarsis Str. (Diptera, Chironomidae)

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 an...

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Bibliographic Details
Published in:T͡S︡itologii͡a Vol. 48; no. 7; p. 595
Main Authors: Kiknadze, I I, Michaĭlova, P, Istomina, A G, Golygina, V V, Int Panis, L, Krastanov, B
Format: Journal Article
Language:Russian
Published: Russia (Federation) 2006
Subjects:
Animals
Chironomidae - genetics
Chromosome Banding
Chromosomes - genetics
Europe
Karyotyping
Larva - genetics
Polymorphism, Genetic
Siberia
Europe
Siberia
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Summary: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.
ISSN:0041-3771