Karyotype and chromosome banding of endangered crucian carp, carassius carassius (Linnaeus, 1758) (Teleostei, Cyprinidae)

0397498 - ÚŽFG 2014 RIV RU eng J - Journal Article
Knytl, M. - Kalous, L. - Ráb, Petr
Karyotype and chromosome banding of endangered crucian carp, carassius carassius (Linnaeus, 1758) (Teleostei, Cyprinidae).
Comparative Cytogenetics. Roč. 7, č. 3 (2013), s. 205-215. ISSN 1993-0771. E-ISSN 1993-078X
R&D Projects: GA ČR(CZ) GPP506/11/P596
Institutional support: RVO:67985904
Keywords : fish cytogenetics * paleotetraploid * heterochromatin * metaphase chromosomes
Subject RIV: EG - Zoology
Impact factor: 1.211, year: 2013

The karyotype and other chromosomal characteristics the crucian carp (Carassius carassius (Linnaeus, 1758)) were revealed by means of conventional banding protocols (C, CMA3, AgNOR). The diploid chromosome number (2n) in this species was 100. Its karyotype was composed of 10 pairs of metacentric, 18 pairs of submetacentric and 22 pairs of subtelo- to acrocentric chromosomes without any microchromosomes. C-banding identified blocks of telomeric heterochromatin on seven chromosome pairs. The NORs were situated on the p arms of the 14th pair of submetacentric chromosomes and on the p arms of the 32nd pair of subtelo-acrocentric chromosomes; AgNOR-positive signals corresponded to the CMA3-positive signals. These chromosome characteristics may suggest a paleo-allotetraploid origin of C. carassius genome.
Permanent Link: http://hdl.handle.net/11104/0225145