Banding cytogenetics of the Barbary partridge Alectoris barbara and the Chukar partridge Alectoris chukar (Phasianidae): a large conservation with Domestic fowl Gallus domesticus revealed by high resolution chromosomes
| Autor: | Kafia Ladjali-Mohammedi, Siham Ouchia-Benissad |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
lcsh:QH426-470 Zoology Plant Science homologies chukar partridge Alectoris chukar Barbary partridge Alectoris barbara 03 medical and health sciences Barbary partridge intrachromosomal rearrangements Genetics Animalia Chromosomal inversion Evolutionary Biology high resolution chromosomes Galliformes biology Cenozoic endemic species Karyotype biology.organism_classification Phasianidae banding cytogenetics lcsh:Genetics 030104 developmental biology Chromosome 4 Africa Microchromosome Animal Science and Zoology Alectoris Research Article Biotechnology |
| Zdroj: | Comparative Cytogenetics 12(2): 171-199 Comparative Cytogenetics, Vol 12, Iss 2, Pp 171-199 (2018) Comparative Cytogenetics |
| ISSN: | 1993-078X 1993-0771 |
| DOI: | 10.3897/compcytogen.v12i2.23743 |
| Popis: | The development of avian cytogenetics is significantly behind that of mammals. In fact, since the advent of cytogenetic techniques, fewer than 1500 karyotypes have been established. The Barbary partridge Alectorisbarbara Bonnaterre, 1790 is a bird of economic interest but its genome has not been studied so far. This species is endemic to North Africa and globally declining. The Chukar partridge Alectorischukar Gray, 1830 is an introduced species which shares the same habitat area as the Barbary partridge and so there could be introgressive hybridisation. A cytogenetic study has been initiated in order to contribute to the Barbary partridge and the Chukar partridge genome analyses. The GTG, RBG and RHG-banded karyotypes of these species have been described. Primary fibroblast cell lines obtained from embryos were harvested after simple and double thymidine synchronisation. The first eight autosomal pairs and Z sex chromosome have been described at high resolution and compared to those of the domestic fowl Gallusdomesticus Linnaeus, 1758. The diploid number was established as 2n = 78 for both partridges, as well as for most species belonging to the Galliformes order, underlying the stability of chromosome number in avian karyotypes. Wide homologies were observed for macrochromosomes and gonosome except for chromosome 4, 7, 8 and Z which present differences in morphology and/or banding pattern. Neocentromere occurrence was suggested for both partridges chromosome 4 with an assumed paracentric inversion in the Chukar partridge chromosome 4. Terminal inversion in the long arm of the Barbary partridge chromosome Z was also found. These rearrangements confirm that the avian karyotypes structure is conserved interchromosomally, but not at the intrachromosomal scale. |
| Databáze: | OpenAIRE |
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