Bolshakov V.V. 2017. [Impact of hydroclime data variation on the karyotype structure of Chironomus plumosus L. (Diptera, Chironomidae) from Rybinsk reservoir, Russia] // Euroasian Entomological Journal. Vol.16. No.6: 528–535 [in Russian, with English summary].
Institute for Biology of Inland Water RAS, Yaroslavskaya obl., Borok 152742 Russia.
ABSTRACT. During 2013–2016, 646 karyotypes of Chironomus plumosus L., 1758 from Rybinsk reservoir were collected and analyzed; 15 sequences forming 113 genome combinations were detected. The “standard” genome combination had only 4 individuals. Most individuals in the studied populations were dominated by pluB2 sequences (63–100%) and pluC2 (58–100%). Rare for other populations sequences were common for Rybinsk reservoir, pluA3 (up to 45%) and pluA4 (up to 33%). Genome combinations were not evenly distributed over the reservoir. Recorded changes in karyotypes of individuals from the “Koprino” locality occurred in recent decades are probably associated with changes in the environment caused by global warming, the possible effect of which on chromosomal polymorphism and frequency of occurrence of chromosomal sequences is discussed.
KEY WORDS: Diptera, Chironomidae, chromosomes, adaptation, Chironomus plumosus, global warming.