Geographic variability of the polytene chromosome banding sequence of non-biting midge Chironomus pseudothummi Str. (Diptera, Chironomidae)

Kiknadze, I. I.; Broshkov, A. D.; Istomina, A. G.; Гундерина, Л. И.; Vallenduuk, Henk J.

doi:10.1134/s1990519x08040123

Cited by 2 publications

(2 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…aprilinus Meigen, 1938, and 22 for Ch. uliginosus Keyl, 1960(Kiknadze et al, 2008aBroshkov et al, 2008;Kiknadze, Broshkov, 2009;Kiknadze, Istomina, 2009). As a rule, the species of the cytocomplex "thummi" have experienced a larger number of inversions during divergence of their karyotypes from Ch.…”

Section: Discussionmentioning

confidence: 99%

“…uliginosus, and Ch. aprilinus), is the change in the centromeric region structure of translocated chromosomes AE and BF compared with the species of the "thummi" cytocomplex (Kiknadze et al, 2008a;Broshkov et al, 2008;Kiknadze, Broshkov, 2009;Kiknadze, Istomina, 2009) The centromeric bands in chromosomes AE and BF of the species of the "pseudothummi" cytocomplex investigated are very thin, and it is diffi cult to determine their presence, but they are not dicentric as in Ch. dorsalis.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Karyotype and chromosomal polymorphism of Chironomus luridus Strenzke, 1959 (Diptera: Chironomidae) in European and Asian populations

Kiknadze¹,

Istomina²

2010

CCG

View full text Add to dashboard Cite

Abstract. The karyotype structure and chromosomal polymorphism were studied in several European (European part of Russia and the Netherlands) and Asian (Siberia and Kazakhstan) populations of Chironomus luridus Strenzke, 1959. Inversion polymorphism was detected in six of the seven chromosome arms: three banding sequences detected in arm A, six sequences in arm B, two sequences in arm C, three sequences in arm E, fi ve sequences in arm F, and two sequences in arm G. Only arm D was monomorphic in all studied populations. In total, 22 banding sequences were recorded in Ch. luridus; they form the banding sequence pool of this species. Thus, Ch. luridus can be regarded as a very polymorphic species. However, the European and Asian populations differed considerably in the levels of polymorphism: the Asian populations were less polymorphic, containing only 8 to 10 sequences, whereas the European populations had 11 to 16 sequences. The new banding sequences lurA3, lurB5, lurE3 were found in Asian populations, whereas the sequences lurB2, lurB3, lurB4, lurB6, lurE2, lurF1, lurF2a, lurF3, lurF4, and lurG2 аre lacked. The total level of inversion heterozygosity in the Asian populations was 12-25% versus 78-80% in the European populations.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Karyotype and chromosomal polymorphism of Chironomus luridus Strenzke, 1959 (Diptera: Chironomidae) in European and Asian populations

Kiknadze¹,

Istomina²

2010

CCG

View full text Add to dashboard Cite

show abstract

An analysis on the divergence of Chironomid spp. based on the study of 18S rRNA and polytene chromosome organization in the species revealing the role of environment on speciation

Dey

Bhaduri

Midya

2021

JoBAZ

View full text Add to dashboard Cite

Background Nine species of Chironomus evolved throughout the world were measured for their divergence with regard to their DNA sequences concerning 18S rRNA since it is conserved for a specific species. With the advancement of the field of molecular evolution, cytogenetics requires further correlation between molecular architecture and morphological features of a species to compare amongst others to decipher their role in speciation. Therefore, divergence of DNA sequences of the Chironomus were compared with differences in the polytene chromosome features of most of the species under this investigation to evaluate underlying correlation among them, if any, to finally establish a novel method of molecular classification broadly applicable in cytogenetics studies. Results When Chironomus javanus Kieffer was considered as a reference organism, an in silico pair-wise alignment of sequences for the 18S rRNA gene regions of the other eight different species of the same genus exhibited nucleotide sequence homology ranging from 67 to 98%. This divergence of the species under consideration might be due to environmental impact causing alteration of nitrogenous bases probably due to mismatch pairing in DNA replication. This may be suggested as a cause of evolution of species in nature. A concomitant study on the polytene chromosome band patterns of majority of these species belonging to this series also indicated a divergence ranging from 10% to 30%. Conclusions Sequence analysis based on 18S rRNA of nine species of Chironomus under this investigation shows a similarity in the polytene chromosome organization in most of the Chironomid species of the series. Hence, molecular divergence in the species is consistent with cytological difference among Chironomid species. Therefore, molecular data based on 18S rRNA and cytological characters based on the polytene chromosome features of the Chironomid species may be useful for their taxonomical recognition. Moreover, variations concerning two aspects of this study may be correlated to their environmental distinctions.

show abstract

Geographic variability of the polytene chromosome banding sequence of non-biting midge Chironomus pseudothummi Str. (Diptera, Chironomidae)

Cited by 2 publications

References 3 publications

Karyotype and chromosomal polymorphism of Chironomus luridus Strenzke, 1959 (Diptera: Chironomidae) in European and Asian populations

Karyotype and chromosomal polymorphism of Chironomus luridus Strenzke, 1959 (Diptera: Chironomidae) in European and Asian populations

An analysis on the divergence of Chironomid spp. based on the study of 18S rRNA and polytene chromosome organization in the species revealing the role of environment on speciation

Contact Info

Product

Resources

About