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1

Interpopulation sex-chromosomes polymorphism in the grasshopper Podisma sapporensis Shir. from Sakhalin and the Kurile Islands

100%
Bugrov A. G.
Folia Biologica
|
1995
|
vol. 43
|
issue 1-2
51-53
EN
A comparative karyotype analysis of two populations of Podisma sapporensis showed that :2n male=22 + XO and 2n female = 22 + XX, the X chromosomes are subacrocentric as a result of the inversion within a population derived from Sakhalin; 2n male=20 + neo-X+neo-Y and 2nfemale=20 + neo-XX, as a ersult of X autosome translocation in population from the Kurile Islands (Kunashir).
2

Recombinant chromosome 14 due to maternal pericentric inversion

88%
Sliuzas V., Utkus A., Kucinskas V.
Journal of Applied Genetics
|
2008
|
vol. 49
|
issue 2
205-207
EN
Chromosome 14 is often involved in various chromosome rearrangements, most of them balanced. Human chromosome 14 is acrocentric, so its pericentric inversions are extremely rare (only few cases have been described in the literature). Here we report on a boy with congenital malformations and recombinant chromosome 14 inherited from his mother carrying a pericentric inversion. The proband's G-banded chromosome analysis revealed derivative chromosome 14. Comparative genomic hybridization analysis identified duplication of the terminal part of chromosome 14q ish cgh dup(14)(q32.1qter). This abnormality has been confirmed by custom BAC FISH analysis. His mother's karyotype was 46,XX,inv(14)(p11.2q32.1).
3

Chromosome polymorphism and C-banding variation of the brachypterous grasshopper Podisma sapporensis Shir. (Orthoptera, Acrididae) in Hokkaido, northern Japan

88%
Bugrov A., Warchalowska-Sliwa E., Tatsuta H., Akimoto S.
Folia Biologica
|
2001
|
vol. 49
|
issue 3-4
137-152
EN
The grasshopper Podisma sapporensis consists of two main chromosome races in Hokkaido. The western group of populations of P. sapporensis, belonging to the XO race, has a diploid number of chromosomes 2n=23 in the male and 2n=24 in the female (sex determination XO male/XX female). The eastern group of populations of this species, belonging to the XY race, differs from the western one as a result of Robertsonian translocation between the originally acrocentric X chromosome and M5 autosome in homozygous state, having resulted in the forming of chromosome sex determination neo-XY male/neo-XX female (2n=22). These races are geographically isolated by the mountainous system consisting of the Mts Daisetsu and Hidaka range, occupying the central part of the island. The hybrid zones between the races have not so far been discovered. Various levels of polymorphism for the pericentric inversions and C-banding variation exist in different chromosomes throughout populations in both chromosome races. In some solitary populations (the population at the summit of Mt Yotei, populations in the vicinity of Naganuma, Oketo, and Tanno) pericentric inversions are fixed in some pairs of chromosomes, which enables marking of the discrete karyomorphes. In the Mt Daisengen population all chromosomes are two-armed as a result of fixing the pericentric inversions. These facts contradict karyotypical conservatism of the tribe Podismini. The level of diversity of P. sapporensis karyotypes could provide a new perspective on the evolutionary process of different karyotype in Orthoptera. The considerable occurrence of polymorphism in chromosomes suggests that karyotypic diversification is undergoing in P. sapporensis. The authors also proposed that P. sapporensis would be divided into four chromosome subraces in the XO chromosome race and two chromosome subraces in the XY race, on the basis of karyotypic features. These races may have been established by fundamental climatic changes during the glacial epoch.
4

Karyotypes of the short-horned orthopteran insects (Orthoptera, Caelifera) from Russia, Kazakhstan, Central Asia, and the Caucasus

75%
Burgov A. G.
Folia Biologica
|
1996
|
vol. 44
15-25
EN
The results of comparative karyotypical studies of the Caelifera orthopteran insects from Russia, Kazakhstan, Central, Asia and the Caucasus are summarized. Chromosome complements for 166 species belonging to the families: Eumastacidae (subfamily Gomphomastacinae; 2n male=19,21), Tetrigidae (2n male=13), Acrididae (2n male=23, 22, 21, 19, 17, 16), Pyrgomorphidae (2n male=19), and Pamphagidae (2n male=19,18) are presented.
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