Karyotype and inversion polymorphism of non-biting midge Chironomus aprilinus Meigen, 1818 (Diptera: Chironomidae) from the Central Caucasus
The set of inversion sequences and its frequency of Chironomus aprilinus Meigen, 1818(Diptera: Chironomidae) on the Central Caucasus is low polymorphic. Probably endemic for populations of the Caucasus new sequence in arm A – apr A3 is described. This sequence diﬀers from apr A1 by one simple inversion on the site 18ef6d-а5-42c-а. The previously establishedtrend – the presence in the south of Russia and Kazakhstan heterozygous individuals apr G1.2 and ﬁxation of apr G2 in the homozygous state are supported. The sequence apr G1in population of the Caucasus is absent. The presence of polymorphism in arms A (present in European populations and absent in populations of Kazakhstan) and arm G (on the contrary, is present in populations of Kazakhstan and absent in European populations) can indicate on mediate position of population of the Caucasus between Western Europe and Kazakhstan