Karyofund of Chironomus plumosus (L.) (Diptera, Chironomidae): V. Terminal and interstitial populations

Shobanov, N. A.; Bolshakov, V. V.

doi:10.1134/s1990519x11020155

Cited by 10 publications

(16 citation statements)

References 3 publications

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“…However, the fourth tooth of mandible of Chironomus bernensis from Caucasian populations was dark brown or dark (Fig. 1e ), while it is pale brown in Chironomus commutatus according to Shobanov (2000) . It is possible that Wülker and Klötzli (1973) did not notice this distinction.…”

Section: Resultsmentioning

confidence: 98%

Karyotype characteristics and polymorphism peculiarities of Chironomus bernensis Wülker & Klötzli, 1973 (Diptera, Chironomidae) from the Central Caucasus and Ciscaucasia

Karmokov¹,

Polukonova²,

Sinishkina³

2015

CCG

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Data about the karyotype characteristics, features of chromosomal polymorphism and larval morphology of populations of Chironomus bernensis Wülker & Klötzli, 1973 (Diptera, Chironomidae) from the Central Caucasus (the northern macroslope) and Ciscaucasia are presented. The characteristics of the pericentromeric regions of the long chromosomes of this species from Caucasian populations were very similar to the ones from some European populations (from Poland and Italy), but differed from Swiss and Siberian populations. In the North Caucasian populations 10 banding sequences were found: two in arms A, C, and E, and one in arms B, D, F, and G. Nine of them were already known for this species, and one, berC2, is described for the first time. Cytogenetic distances between all the studied populations of Chironomus bernensis show that close geographical location of all studied populations from the Central Caucasus and Ciscaucasia is reflected in their similar cytogenetic structure, but on the other hand, that they are more closely related to populations from Europe than to populations from Western Siberia. At the same time, all studied larvae from Caucasian populations have a four-bladed premandible, instead of a two-bladed one, as in the description of Chironomus bernensis from Switzerland (Wülker and Klötzli 1973, Polukonova 2005c). These peculiarities may indicate the relative isolation of the Caucasus from the viewpoint of microevolution. Further research on karyological and morphological characteristics of Chironomus bernensis from geographically distant regions is necessary as there is a possibility that the presently known species is actually polytypic and consists of several sibling species.

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Section: Resultsmentioning

confidence: 98%

Karyotype characteristics and polymorphism peculiarities of Chironomus bernensis Wülker & Klötzli, 1973 (Diptera, Chironomidae) from the Central Caucasus and Ciscaucasia

Karmokov¹,

Polukonova²,

Sinishkina³

2015

CCG

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“…†mapping according to Maximova-Shobanov system (Maximova 1976, Shobanov 1994)‡mapping according to Keyl-Devai system (Keyl 1962, Devai et al 1989)§mapping according to Keyl-Hagele system (Keyl 1957, Hagele 1970|mapping according to Beermann system (Beermann 1955)…”

Section: Resultsmentioning

confidence: 99%

“…Arm B was mapped according to Keyl–Devai system (Keyl 1962, Devai et al 1989) in Chironomus riparius , according to Maximova–Shobanov system (Maximova 1976, Shobanov 1994) in species of Chironomus plumosus group of sibling species, and was not mapped in other species studied in this paper. Arm G was mapped according to Keyl–Hägele system (Keyl 1957, Hägele 1970) in Chironomus riparius and according to Maximova–Shobanov system (Maximova 1976, Shobanov 1994) in Chironomus plumosus , Chironomus borokensis and Chironomus balatonicus . Mapping of polytene chromosomes of species from the subgenus Camptochironomus was done according to Beermann system (Beermann 1955).…”

Section: Methodsmentioning

confidence: 99%

Chromosomal organization of the ribosomal RNA genes in the genus Chironomus (Diptera, Chironomidae)

Гундерина¹,

Golygina²,

Broshkov³

2015

CCG

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Chromosomal localization of ribosomal RNA coding genes has been studied by using FISH (fluorescence in situ hybridization) in 21 species from the genus Chironomus Meigen, 1803. Analysis of the data has shown intra- and interspecific variation in number and location of 5.8S rDNA hybridization sites in 17 species from the subgenus Chironomus and 4 species from the subgenus Camptochironomus Kieffer, 1914. In the majority of studied species the location of rDNA sites coincided with the sites where active NORs (nucleolus organizer regions) were found. The number of hybridization sites in karyotypes of studied chironomids varied from 1 to 6. More than half of the species possessed only one NOR (12 out of 21). Two rDNA hybridization sites were found in karyotypes of five species, three – in two species, and five and six sites – in one species each. NORs were found in all chromosomal arms of species from the subgenus Chironomus with one of them always located on arm G. On the other hand, no hybridization sites were found on arm G in four studied species from the subgenus Camptochironomus. Two species from the subgenus Chironomus – Chironomus balatonicus Devai, Wuelker & Scholl, 1983 and Chironomus “annularius” sensu Strenzke, 1959 – showed intraspecific variability in the number of hybridization signals. Possible mechanisms of origin of variability in number and location of rRNA genes in the karyotypes of species from the genus Chironomus are discussed.

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“…The population kary opool of chironomids can be formed basically in response to a specific environment or to a genetic exchange among populations [30]. Some types of inversions found in the widespread species of Chirono mus plumosus were shown to favor better fitness of their carriers for a local environment as compared to those carrying the standard gene sequence [31].…”

Section: Discussionmentioning

confidence: 99%

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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Karyofund of Chironomus plumosus (L.) (Diptera, Chironomidae): V. Terminal and interstitial populations

Cited by 10 publications

References 3 publications

Karyotype characteristics and polymorphism peculiarities of Chironomus bernensis Wülker & Klötzli, 1973 (Diptera, Chironomidae) from the Central Caucasus and Ciscaucasia

Karyotype characteristics and polymorphism peculiarities of Chironomus bernensis Wülker & Klötzli, 1973 (Diptera, Chironomidae) from the Central Caucasus and Ciscaucasia

Chromosomal organization of the ribosomal RNA genes in the genus Chironomus (Diptera, Chironomidae)

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

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Karyofund of Chironomus plumosus (L.) (Diptera, Chironomidae): V. Terminal and interstitial populations

Cited by 10 publications

References 3 publications

Karyotype characteristics and polymorphism peculiarities of Chironomus bernensis Wülker &amp; Klötzli, 1973 (Diptera, Chironomidae) from the Central Caucasus and Ciscaucasia

Karyotype characteristics and polymorphism peculiarities of Chironomus bernensis Wülker &amp; Klötzli, 1973 (Diptera, Chironomidae) from the Central Caucasus and Ciscaucasia

Chromosomal organization of the ribosomal RNA genes in the genus Chironomus (Diptera, Chironomidae)

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

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Karyotype characteristics and polymorphism peculiarities of Chironomus bernensis Wülker & Klötzli, 1973 (Diptera, Chironomidae) from the Central Caucasus and Ciscaucasia

Karyotype characteristics and polymorphism peculiarities of Chironomus bernensis Wülker & Klötzli, 1973 (Diptera, Chironomidae) from the Central Caucasus and Ciscaucasia