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Karyotype characteristics and polymorphism peculiarities of Chironomus luridus (Diptera: Chironomidae) from Central and Northwest Caucasus

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Abstract

The study presents data on the karyotype characteristics and features of chromosomal polymorphism of Chironomus luridus Strenzke, 1959 (Diptera: Chironomidae) from several Caucasian populations (Central and Northwest Caucasus). Eight banding sequences were found in the Caucasian populations. Inversion polymorphism was observed only in arm C. The genetic distances between all the studied populations of C. luridus were calculated using Nei criteria. The studied Caucasian populations are generally closest to Asian populations. However, most of the Caucasian populations (Northwest Caucasus) form their own separate cluster. The principal component analysis (PCA) shows a similar picture. Two of the Caucasian populations do not follow Hardy-Weinberg expectation, bearing a marked deficiency of lur C1.2 heterozygotes, arguably, due to negative selection of heterozygotes. All the obtained data are indicative of relative remoteness of the Northwest Caucasian populations from the previously studied ones and total complexity of the entire Caucasus from the microevolution standpoint.

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  1. Tembotov Institute of Ecology of Mountain territories RAS, I. Armand str., 37a, Nalchik, 360051, Russia

    Mukhamed Kh. Karmokov

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  1. Mukhamed Kh. Karmokov
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Correspondence to Mukhamed Kh. Karmokov.

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Karmokov, M.K. Karyotype characteristics and polymorphism peculiarities of Chironomus luridus (Diptera: Chironomidae) from Central and Northwest Caucasus. Biologia 72, 1185–1193 (2017). https://doi.org/10.1515/biolog-2017-0130

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  • DOI: https://doi.org/10.1515/biolog-2017-0130

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