Chromosomal Analyses of Cobitis phrygica Battalgazi, 1944 and C-simplicispina Hanko, 1925 (Teleostei, Cobitidae)

Abstract

The purpose of this study is to reveal diploid chromosome number, karyotype and chromosomal banding properties with C-banding and Ag-staining in Cobitis phrygica Battalgazi, 1944 and C. simplicispina Hanko, 1925 from Turkey. Metaphase chromosomes were obtained from kidney cells. Both species had a same diploid chromosome number of 2n=50. Karyotypes were composed of four pairs of metacentric, four pairs of submetacentric and 17 pairs of subtelo-acrocentric chromosomes in C. phrygica, and eight pairs of metacentric, eight pairs of submetacentric and nine pairs of subtelo-acrocentric chromosomes in C. simplicispina. Fundamental arm numbers were calculated as 66 in C. phrygica and as 82 in C. simplicispina. C-bands were observed on the pericentromeric regions of most chromosomes in both species. Nucleolus organizer regions (NORs) were determined on one pair of chromosomes in both species.