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Chromosomal polymorphism of the unique Baikal deep-water population of Sergentia flavodentata (Diptera, Chironomidae) from the region of hydrothermal venting

  • Animal Genetics
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Abstract

The subject of this study is chromosomal polymorphism of a population of Baikal endemic species Sergentia flavodentata (Diptera, Chironomidae) from Frolikha Bay region of hydrothermal venting at a depth of 420–430 m. In 35–67% of larvae, six heterozygous inversions were found to be preserved for 13 years (materials of 1991, 1994, 1996, 1999, 2003). The number of zygotic combinations reached 14; 0.5–0.7 inversions per individual was observed. It is suggested that stable chromosomal polymorphism characteristic of this species is nonrandom, being a mechanism of the population adaptation to the specific conditions of hydrothermal venting community based on bacterial biochemosynthesis.

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Translated from Genetika, Vol. 41, No. 3, 2005, pp. 366–373.

Original Russian Text Copyright © 2005 by Proviz.

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Proviz, V.I. Chromosomal polymorphism of the unique Baikal deep-water population of Sergentia flavodentata (Diptera, Chironomidae) from the region of hydrothermal venting. Russ J Genet 41, 284–290 (2005). https://doi.org/10.1007/s11177-005-0086-9

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  • DOI: https://doi.org/10.1007/s11177-005-0086-9

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