THE CYTOGENETIC CHARACTERISTIC OF SOME PALEARCTIC POPULATIONS
OF HOLARCTIC MIDGE GLYPTOTENDIPES BARBIPES STAEGER (DIPTERA, CHIRONOMIDAE)
N.A. Petrova, S.V. Zhirov
Zoological Institute RAS, St. Petersburg, 199034;
e-mail: chironom@zin.ru
Set and frequencies of inversion banding sequences in polytene chromosomes in the Palearctic natural populations of a Holarctic chironomid Glyptotendipes barbipes
(2n = 8) (the Northwest of Russia, Irkutsk region, Kirghizia, Armenia) have been investigated. The majority of larvae were heterozygotes on inversions. Distinctions in a set and
frequencies of inversions between populations form different regions have been ascertained. We have established that G. barbipes karyotype in the populations studied
includes inversion banding sequences that are endemic for Palearctic (p'barG2), and also the general sequences met both in Palearctic, and in Ne-arctic (h'barB3, h'barC3, h'baE2,
h'barF2).
Key words:
Glyptotendipes barbipes, chironomids, polytene chromosomes, polymorphism
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