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

KARAHAN A. , Ergene S.

TURKISH JOURNAL OF BIOLOGY, cilt.35, sa.1, ss.79-87, 2011 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 35 Konu: 1
  • Basım Tarihi: 2011
  • Doi Numarası: 10.3906/biy-0903-4
  • Sayfa Sayıları: ss.79-87


The karyotype of Clarias gariepinus was described by means of G-banding, C-banding, Q-banding, and Ag-NORs (NORs) staining in this study. Samples were collected from 2 regions of Turkey: the Goksu Delta and Orontes River. Although samples from both regions had the same diploid chromosome number and fundamental arm number, (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 Goksu 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 Goksu Delta and Orontes River samples differed from each other.