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Comparative analysis of karyotypes of Chironomussolitus Linevich & Erbaeva, 1971 and Chironomusanthracinus Zetterstedt, 1860 (Diptera, Chironomidae) from East Siberia.

Proviz V - Comp Cytogenet (2015)

Bottom Line: A comparative chromosome banding analysis of Chironomussolitus Linevich & Erbaeva, 1971 and Chironomusanthracinus Zetterstedt, 1860 from East Siberia (Lakes Baikal, Gusinoe, Arakhley and Irkutsk Reservoir) showed close similarity of banding sequences.Chironomussolitus differs from Chironomusanthracinus in one species-specific sequence of arm B.Arms C (43%) and D (30%) had inversion banding sequences previously reported in Chironomusanthracinus The similarity of karyotypic features of Chironomussolitus and Chironomusanthracinus in combination with morphological features of larvae provide evidence in favour of including Chironomussolitus in the Chironomusanthracinus group of sibling species long with Chironomusreservatus Shobanov, 1997.

View Article: PubMed Central - HTML - PubMed

Affiliation: Limnological Institute, SB RAS, Ulan-Batorskaya 3, Irkutsk 664033, Russia.

ABSTRACT
A comparative chromosome banding analysis of Chironomussolitus Linevich & Erbaeva, 1971 and Chironomusanthracinus Zetterstedt, 1860 from East Siberia (Lakes Baikal, Gusinoe, Arakhley and Irkutsk Reservoir) showed close similarity of banding sequences. Chironomussolitus differs from Chironomusanthracinus in one species-specific sequence of arm B. Arms C (43%) and D (30%) had inversion banding sequences previously reported in Chironomusanthracinus The similarity of karyotypic features of Chironomussolitus and Chironomusanthracinus in combination with morphological features of larvae provide evidence in favour of including Chironomussolitus in the Chironomusanthracinus group of sibling species long with Chironomusreservatus Shobanov, 1997.

No MeSH data available.


Related in: MedlinePlus

Karyotype of Chironomussolitus. h’solA1.1, p’solB1.1 ets.–genotypic combinations of banding sequences in chromosomal arms; N – nucleolus; BR – Balbiani Ring, p – puff, arrows show centromeric bands.
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Figure 1: Karyotype of Chironomussolitus. h’solA1.1, p’solB1.1 ets.–genotypic combinations of banding sequences in chromosomal arms; N – nucleolus; BR – Balbiani Ring, p – puff, arrows show centromeric bands.

Mentions: Karyotypes of Chironomussolitus (Fig. 1) and Chironomusanthracinus (Fig. 2) have common morphological features: 2n=8. A combination of chromosome arms is typical for species from “thummi” cytocomplex. Chromosomes AB and CD are metacentric, EF, submetacentric, and G, telocentric. The species differ in the size of cenromeric heterochromatin. The centromeric areas of Chironomussolitus are well defined, and the centromeres of Chironomusanthracinus look like thin disks. Arm G homologues are unconjugated and carry a Balbiani Ring (BR) and a nucleolus (N). In Chironomusanthracinus there is a second nucleolus in the arm F.


Comparative analysis of karyotypes of Chironomussolitus Linevich & Erbaeva, 1971 and Chironomusanthracinus Zetterstedt, 1860 (Diptera, Chironomidae) from East Siberia.

Proviz V - Comp Cytogenet (2015)

Karyotype of Chironomussolitus. h’solA1.1, p’solB1.1 ets.–genotypic combinations of banding sequences in chromosomal arms; N – nucleolus; BR – Balbiani Ring, p – puff, arrows show centromeric bands.
© Copyright Policy - creative-commons-attribution
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4488970&req=5

Figure 1: Karyotype of Chironomussolitus. h’solA1.1, p’solB1.1 ets.–genotypic combinations of banding sequences in chromosomal arms; N – nucleolus; BR – Balbiani Ring, p – puff, arrows show centromeric bands.
Mentions: Karyotypes of Chironomussolitus (Fig. 1) and Chironomusanthracinus (Fig. 2) have common morphological features: 2n=8. A combination of chromosome arms is typical for species from “thummi” cytocomplex. Chromosomes AB and CD are metacentric, EF, submetacentric, and G, telocentric. The species differ in the size of cenromeric heterochromatin. The centromeric areas of Chironomussolitus are well defined, and the centromeres of Chironomusanthracinus look like thin disks. Arm G homologues are unconjugated and carry a Balbiani Ring (BR) and a nucleolus (N). In Chironomusanthracinus there is a second nucleolus in the arm F.

Bottom Line: A comparative chromosome banding analysis of Chironomussolitus Linevich & Erbaeva, 1971 and Chironomusanthracinus Zetterstedt, 1860 from East Siberia (Lakes Baikal, Gusinoe, Arakhley and Irkutsk Reservoir) showed close similarity of banding sequences.Chironomussolitus differs from Chironomusanthracinus in one species-specific sequence of arm B.Arms C (43%) and D (30%) had inversion banding sequences previously reported in Chironomusanthracinus The similarity of karyotypic features of Chironomussolitus and Chironomusanthracinus in combination with morphological features of larvae provide evidence in favour of including Chironomussolitus in the Chironomusanthracinus group of sibling species long with Chironomusreservatus Shobanov, 1997.

View Article: PubMed Central - HTML - PubMed

Affiliation: Limnological Institute, SB RAS, Ulan-Batorskaya 3, Irkutsk 664033, Russia.

ABSTRACT
A comparative chromosome banding analysis of Chironomussolitus Linevich & Erbaeva, 1971 and Chironomusanthracinus Zetterstedt, 1860 from East Siberia (Lakes Baikal, Gusinoe, Arakhley and Irkutsk Reservoir) showed close similarity of banding sequences. Chironomussolitus differs from Chironomusanthracinus in one species-specific sequence of arm B. Arms C (43%) and D (30%) had inversion banding sequences previously reported in Chironomusanthracinus The similarity of karyotypic features of Chironomussolitus and Chironomusanthracinus in combination with morphological features of larvae provide evidence in favour of including Chironomussolitus in the Chironomusanthracinus group of sibling species long with Chironomusreservatus Shobanov, 1997.

No MeSH data available.


Related in: MedlinePlus