Chromosomal differentiation between populations of Clarias gariepinus (Burchell, 1822) from the Göksu Delta and Orontes River (Turkey)

Authors : Arzu KARAHAN, Serap ERGENE

Pages : 79-87

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Publication Date : 2011-12-01

Article Type : Research Paper

Abstract :The karyotype of Clarias gariepinus was described by means of G-banding, C-banding, Q-banding, and Ag-NORs insert ignore into journalissuearticles values(NORs); staining in this study. Samples were collected from 2 regions of Turkey: the Göksu Delta and Orontes River. Although samples from both regions had the same diploid chromosome number and fundamental arm number, insert ignore into journalissuearticles values(2n = 56, FN = 100);, they had remarkable differences in karyotype formula and distribution of rDNA sites, according to silver nitrate staining and G-banding. While the karyotype formula for Orontes River samples was 24m + 10sm + 10st + 12a, the Göksu Delta samples` was 28m + 6sm + 10st + 12a. Comparative analysis showed that there was intraspecific variability in NORs and different NOR numbers in the 2 populations. The study`s findings show that the Göksu Delta and Orontes River samples differed from each other.
Keywords : Key words Clarias gariepinus, Cytogenetic analyses, Göksu Delta, Orontes River, Turkey