Karyotype structure in species of Propsilocerus genus (Diptera, Chironomidae)

Kiknadze, I.I.; Istomina A G, A.G.; Wang, H.; Golygina, V.V.; Kiknadze, I.I; Istomina A G, A.G; Wang, H; Golygina, V.V

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Karyotype structure in species of Propsilocerus genus (Diptera, Chironomidae)

Kiknadze, I.I.; Istomina A G, A.G.; Wang, H.; Golygina, V.V.

Tsitologiia 47(3): 255-262

2005

ISSN/ISBN: 0041-3771

PMID: 16706171

Document Number: 591931

Karyotype structure and polytene chromosome banding patterns were studied in two Orthocladiinae siblings--Propsilocerus akamusi (China) and Propsilocerus jacuticus (Russia). Both species have haploid number of chromosome typical for Orthocladiinae (n = 3). An unusual structure of centromeric regions was observed in all three chromosomes of karyotypes in both species. Photomaps of polytene chromosomes are presented. A comparison of karyotypes of P. akamusi and Propsilocerus jacuticus revealed a high level of homology in their banding sequences, however, the presence of fixed paracentric inversions in chromosomal arms IR, IIR, IIIR of Propsilocerus jacuticus has shown a clear-cut phylogenetic divergence. No chromosomal polymorphism was found in both species.