Full-text resources of PSJD and other databases are now available in the new Library of Science.
Visit https://bibliotekanauki.pl

Refine search results

Journals help

  1. 51 Folia Biologica

  2. 7 Journal of Applied Genetics

  3. 2 Biotechnologia

  4. 1 Genetica Polonica

Years help

  1. 1 2010

  2. 2 2009

  3. 6 2008

  4. 5 2007

  5. 1 2006

More...
Authors help

  1. 13 Warchalowska-Sliwa E.

  2. 12 Maryanska-Nadachowska A.

  3. 6 Nokkala S.

  4. 6 Slota E.

  5. 5 Bugrov A. G.

More...
Preferences help
Polish version English version Language
enabled [disable] Abstract
Number of results

Results found: 61

Number of results on page
first rewind previous Page / 4 next fast forward last

Search results

Search:
in the keywords:  KARYOTYPE
help Sort By:

help Limit search:
first rewind previous Page / 4 next fast forward last
1

Comparative cytogenetic study of Poecilimon brunneri Frivaldsky and P. zwicki Ramme (Phaneropteridae: Orthoptera)

100%
Warchalowska-Sliwa E., Michailova P., Peshev G.
|
1992
|
vol. 40
|
issue 1-2
33-39
EN
The karyotype of Poecilimon brunneri and P.zwicki is described. In both species it possesses the primitive character. The relative length of chromosome in P. brunneri and P. zwicki are compared. Both species have an unstable B chromosome and aberrations in autosomes. In P. zwicki the X chromosome shows euchromatic segments of different size and place.
2

Male reproductive system and karyotype of Mycopsylla fici (Tryon) (Homoptera, Psylloidea)

100%
Glowacka E., Maryanska-Nadachowska A.
Folia Biologica
|
1998
|
vol. 46
17-21
EN
Anatomical features of the male reproductive system, karyotype (2n = 24+X0) and C bands in Mycopsylla fici were described for the first time.
3

Description of the Muscovy duck (Cairina moschata) karyotype

100%
Wojcik E., Smalec E.
Folia Biologica
|
2008
|
vol. 56
|
issue 3-4
243-248
EN
The karyotype of theMuscovy duck originating from Cairina moschata was characterised on the basis of R and C bands. Chromosomal preparations obtained from an in vitro blood lymphocyte culture were RBG- and CBG-stained. The structures of nine and fourteen pairs of chromosomes were examined based on R bands and C bands, respectively. Ideograms of banded patterns of the analysed chromosomes were drawn. The sizes of individual constitutive heterochromatin blocks wereas measured. The morphology of the analysed chromosomes was assessed.
4

Chromosome study of Lithobius forficatus (Lithobiomorpha, Chilopoda)

100%
Woznicki P., Wytwer J., Kulesza M.
Folia Biologica
|
2003
|
vol. 51
|
issue 3-4
147-150
EN
The diploid number 2n= 46 and the chromosome arm number NF = 74 are described in Lithobius forficatus from Olsztyn (Poland). Analyses of silver and CMA3 ? stained mitotic chromosomes suggest that a single chromosome pair has active NORs which correspond to G-C-rich (CMA3-positive) chromatin. Heteromorphism of the largest metacentric chromosome pair was observed. The sex chromosomes were not identified. Size polymorphism of the first chromosome pair was found.
5

Karyotype analysis of three weevil species from the genera Brachysomus (Boheman, 1845) and Strophosoma Billberg, 1820 (Coleoptera, Curculionidae)

100%
Holecova M., Rozek M., Lachowska D.
Folia Biologica
|
2008
|
vol. 56
|
issue 3-4
213-217
EN
The karyotype structure of Laena reitteri is described for the first time. The chromosome number 2n=18+1-3B and meioformula n%=8+Xyp+1-3B deviates from the modal tenebrionid number. The karyotype exhibits low variation in morphology and length. The diploid set consists of four long (subtelocentric and acrocentric), twelve medium-sized acrocentric autosomes and sex heterochromosomes Xy. The X chromosome is submeta- centric, while the y is acrocentric and the smallest element of the set. On mitotic and meiotic plates 1-3 small additional elements are also visible, and probably represent B The NORs are very active at mitotic prophase and early meiotic stages.
6

Karyotype and reproductive organs of male Dorypteryx domestica (Smithers, 1958) (Psocoptera: Trogiomorpha: Psyllipsocidae)

100%
Golub N. V., Kucerova Z.
Folia Biologica
|
2008
|
vol. 56
|
issue 1-2
21-23
EN
The karyotype and male reproductive system, with special reference to the number of testicular follicles and shape of seminal vesicles, were studied in Dorypteryx domestica (Smithers, 1958) (Psocoptera: Trogiomorpha: Psyllipsocidae). This species displays 2n = 29 (28+X), a single nucleolus connected with one of the largest autosome pairs, and paired testes, each consisting of a single, large seminal follicle and a long, slightly coiled seminal vesicle.
7

Standard and C-banded meiotic karyotypes of Psylloidea (Sternorrhyncha, Homoptera, Insecta)

100%
Maryanska-Nadachowska A., Kuznetsova V., Nokkala S.
Folia Biologica
|
2001
|
vol. 49
|
issue 1-2
53-62
EN
Meiotic karyotypes were studied in males of Craspedolepta sonchi (Foerster, 1848), Diaphorina chobauti Puton, 1898, D. lamproptera Burckhardt, 1981, Psylla hartigii Flor, 1861, Cacopsylla palmeni (Loew, 1878), C. hippophaes (Foerster, 1848), C. melanoneura (Foerster, 1868), C. pyricola (Foerster 1848), C. moscovita (Andrianova, 1848), Bactericera salicivora (Reuter, 1876), Trioza abdominalis Flor, 1861, T. lauri = Lauritrioza alacris (Flor, 1861). Karyotypes were 2n = 25 (24 + XO) in all species except B. salicivora with 2n = 26 (24 + neo-XY). Testes consisted of two follicles each in all species but P. hartigii with four-follicular testes in males. The discussion covers the problems of chromosome numbers, sex-determining chromosome systems, B-chromosomes, patterns of C- banding, testis structure, and spermatid development in Psylloidea.
8

C-heterochromatin pattern of ten species of tetrigids (Tetrigidae, Orthoptera)

100%
Warchalowska-Sliwa E., Maryanska-Nadachowska A., Michailova P. V., Tchobanov D.
Folia Biologica
|
2003
|
vol. 51
|
issue 1-2
47-53
EN
The karyotypes of species belonging to the Tetrigidae is characterised by structural conservatism. The standard chromosome set of T. japonica, T simulans, T. bolivari, P. meridionalis, U. depressus, and F. robustus consists of 2n=13 acrocentric chromosomes in males and 2n=14 in females, with a sex determining mechanism of X0 male and XX female. C-bands distribution of ten species belonging to 4 genera were studied. Differences in the position of C-bands and number of chiasma between species are discussed.
9

The karyotypes of two bark-lice species (Psocoptera, Psocomorpha, Amphipsocidae): the first description of the neo-XY sex chromosome system in Psocoptera

100%
Golub N. V., Nokkala S.
Folia Biologica
|
2001
|
vol. 49
|
issue 3-4
153-156
EN
Karyotypes of two bark-lice species Amphipsocus japonicus End. and Dasypsocus japonicus End. (Amphipsocidae, Psocomorpha, Psocoptera) were studied for the first time. D. japonicus displayed 2n=16 (14+XX/X0). The XX/X0 sex chromosome system observed in this species is characteristic of the order Psocoptera. A. japonicus showed 2n=16 (14+neo-XY). This is the first observation of the neo-XY sex determination system in Psocoptera. In this species a large amount of constitutive heterochromatin was found in the original X-part of the neo-X chromosome.
10

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).
11

Karyotypes, sex chromosome systems, and male meiosis in Finnish psyllids (Homoptera, Psylloidea)

100%
Kuznestsova V. G., Nokkala S., Maryanska-Nadachowska A.
Folia Biologica
|
1997
|
vol. 45
143-152
EN
The karyotypes and structure of the testes were studied in 12 species of Psylloidea belonging to the families Aphalaridae, Psyllidae and Triozidae. Males of ten species, namely Aphalara avicularis Oss., A. rumicicola Klimasz., Camaratoscena speciosa (Flor), Cacopsylla ambiqua Frst., C. peregrina Frst., Bactericera curvatinervis Frst., B. striola Flor., Trioza anthrisci Burckhardt, and T. apicalis Frst. have two seminal follicles per testis, this being the most typical testis structure in Psylloidea. Males of Psylla betulaenanae Oss. and P. ledi Flor. were found to display 4 follicles per testis. Ten species share 2n=24+X0 in males, which is the basic karyotype in Psylloidea as a whole, whereas Bactericera curvatinervis Frst. and B. striola Flor. have 2n=24+neo-XY. In some karyotypes, one B-chromosome was found. Its peculiar behaviour during some stages of the first meiotic division was examined. The karyotype of A. rumicicola was studied after Giemsa C-banding. Using C-band in an autosome pair as the marker of one of the telomeres it was proved that holokinetic chromosomes of psyllids are in fact dikinetic in the first meiotic division.
12

Flow cytometry-application in animal biotechnology

100%
Smorag Z., Bochenek M.
Biotechnologia
|
1995
|
issue 3
54-67
EN
Flow cytometry offers several advantages over the formerly used methodologies - hundreds or thousands of cells can be measured per second with high accuracy and reproducibility, rare cells can be detected from a large population.Some of the staining methods preserve cell viability so the reprodctive capacity of the sorted cells can be investigated.In biotechnology, the most popular application of flow cytometry is the DNA analysis e.g. cell cycle, chromosome karyotyping, gene mapping, etc.It is possible to analyse quality of semen and sorting of viable sperm cells.
13

Karyotypes and C-banding patterns of some Phaneropterinae katydids (Orthoptera, Tettigonioidea) with special attention to a post-reductional division of the neo-X and the neo-Y sex chromosomes in Isophya hemiptera

100%
Warchalowska-Sliwa E., Bugrov A. G.
Folia Biologica
|
1998
|
vol. 46
47-54
EN
Karyotypes and C-banding patterns of four species belonging to three genera of the subfamily Phaneropterinae were studied. The basic karyotype of Isophya kalishevskii, Polysarcus zacharovi, and Poecilimon ukrainicus consists of 2n=31(XO) in the male. The chromosome number of Isophya hemiptera is 2n%=28+neo-X+neo-Y as a result of mutual tandem translocation between the originally acrocentric X-chromosome and acrocentric medium size autosome. Analysis of the meiotic behaviour of the neo-X and neo-Y demonstrated a post-reductional division of these chromosomes.
14

The occurence of m-chromosomes in the karyotypes of six species of the Oxycareninae (Heteroptera, Lygaeidae)

100%
Grozeva S. M.
Folia Biologica
|
1995
|
vol. 43
|
issue 1-2
55-59
EN
Six species from six genera of the Oxycareninae were investigated.Males of all examinated species have 2 elongate follicles in each of the paired testes and an unpaired branched mesadenial gland.Four of them hsve 14 autosomes in the set.Two other pecies have 12 autosomes, one autosomal pair being larger than the others.The last two genera are monotypic and have similar morphological characters.In all the examined species there is a pair of m-chromosomes, situated separately or as a pseudobivalent during mataphase 1 of meiosis, found in all the investigated cells near to the sex (XY) chromosomes.
15

Remarks on chromosomal numbers and anatomy of the male reproductivesystem in Triozidae (Psylloidea, Homoptera)

100%
Maryanska-Nadachowska A., Glowacka E.
Folia Biologica
|
1997
|
vol. 45
125-131
EN
Karyotypes and morphology of the male reproductive system of seven species of Psylloidea (Trioza abdominalis, T. cirsii, T. dispar, T. flavipennis, T. munda, T. senecionis, and Bactericera femoralis) were described for the first time.
16

Cytogenetic characterization of Geophagus brasiliensis and two species of Gymnogeophagus (Cichlidae: Geophaginae) from Guaiba Lake, RS, Brazil

100%
Bettin_ P. L., Giuliano-Caetano L., Dias A. L.
Folia Biologica
|
2010
|
vol. 58
|
issue 1-2
29-34
EN
The karyotypes of three species of fish of the Cichlidae family from the Forqueta river and several locations in Gua?ba lake/RS (Brazil) were analyzed. All species presented 2n=48, while Gymnogeophagus gymnogenys showed two karyotypic formulae: 4m+44st-a with FN=52 and 6m+42st-a with FN=54. Gymnogeophagus labiatus presented 4m+4sm+40st-a and FN=56 and Geophagus brasiliensis 4sm+44st-a and FN=52. Simple NORs were found in all species with the exception of a population of G. gymnogenys from Saco da Alemoa/Barra do Ribeiro. CMA3 staining revealed NOR sites, while DAPI staining was negative and heterochromatin was limited to pericentromeric regions and associated to NORs, except in G. labiatus. The data show a conserved pattern in Geophagus brasiliensis and karyotype variation in the species of Gymnogeophagus.
17

Description of the Anser cygnoides goose karyotype

100%
Wojcik E., Smalec E.
Folia Biologica
|
2008
|
vol. 56
|
issue 1-2
37-42
EN
The karyotype of the domestic goose A. cygnoides was characterised on the basis of R and C bands. Chromosomal preparations obtained from an in vitro culture of blood lymphocytes were stained by means of the RBG and CBG banding techniques. The first nine pairs of chromosomes were analysed by the R banding technique, while fourteen pairs of chromosomes were analysed by the C banding technique. The localisation of R bands as well as the sizes and positions of constitutive heterochromatin blocks were determined. Ideograms of R and C banded patterns for the analysed chromosomes were drawn. The morphological make-up of the analysed chromosomes was assessed.
18

Karyotypes of two species of the genus Pimelodus (Siluriformes, Pimelodidae)

100%
Treco F. R., Dias A. L.
|
2009
|
vol. 57
|
issue 1-2
43-48
EN
A cytogenetic study was conducted on two species of the genus Pimelodus that were collected from the Piquiri river, Paran?, Brazil: Pimelodus paranaensis and Pimelodus heraldoi. Both had a diploid number of 2n=56 chromosomes and a fundamental number (FN) of 104. In P. paranaensis, the karyotype consisted of 22m+22sm+4st+8a chromosomes, whereas the karyotype of P. heraldoi consisted of 18m+24sm+6st+8a. The AgNORs were localized in the terminal region of the long arm in one pair of subtelocentric chromosomes, pair 24 in P. paranaensis and pair 23 in P. heraldoi. The latter species showed size heteromorphism of these regions between the chromosome homologues. Heterochromatin was distributed mainly in the terminal regions in the two species. CMA3-positive staining was observed in some chromosomes, besides being associated with NORs, which were all DAPI-negative, in both species of Pimelodus. C-banding plus CMA3 and DAPI showed that most of the heterochromatic regions were rich in AT bases in P. paranaensis and P. heraldoi.
19

Meiosis of two species of Cacopsylla with polymorphic sex chromosomes in males (Homoptera, Psylloidae)

100%
Grozeva S., Maryanska-Nadachowska A.
|
EN
The karyotype in two species of Cacopsylla (Homoptera, Psyllidae) from populations was investigated.The males were found to be dimorphic with respect to their sex chromosome constitution and the automosome number.Type A (XO) was described for C sorbi.Type B (XY) was described for C mali and Type C (X1X2Y)for two species in the present work.In Type B and Type C reduction of the autosome number was found.The bahaviour of sex chromosome during meiosis was studied.The scheme was proposed indicationg how the XO type, through X-autosome fusion, gave rise to the neo X1X2Y type.
20

Additional chromosome in a child as a result of a balanced reciprocal translocation t(12;18)(p13;q12) in his mother's karyotype

100%
Lassota M., Przelozna B., Plodzien M., Bugno M., Wnuk M., Kotylak Z., Slota E.
|
EN
In this case report we present a child with an additional chromosome in the karyotype. The karyotypes of the boy and his parents were analyzed by use of a conventional banding technique (GTG) and fluorescence in situ hybridization (FISH). Probes painting whole chromosomes 12 and 18 were used in FISH. Cytogenetic examination of the parents revealed that his mother was carrying balanced reciprocal translocation between chromosomes 12 and 18. Her karyotype was described as 46,XX,t(12;18)(p13;q12). Father's karyotype was normal, described as 46,XY. The boy's karyotype was defined as 47,XY,+der(18)t(12;18)(p13;q12). The additional chromosome appeared probably due to 3:1 meiotic disjunction of the maternal balanced translocation, known as tertiary trisomy. The mother displayed a normal phenotype and delivered earlier a healthy child. However, the boy with the unbalanced karyotype shows multiple congenital abnormalities.
first rewind previous Page / 4 next fast forward last
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.