Chromosomal Characteristics of Oxynoemacheilus axylos Yoǧurtçuoǧlu, Kaya & Freyhof, 2022 and O. nasreddini Yoǧurtçuoǧlu, Kaya & Freyhof, 2021 (Actinopterygii: Nemacheilidae) in Türkiye

Abstract

Two endemic Anatolian nemacheilids were studied cytogenetically for the first time. Diploid chromosome numbers, chromosome morphologies in the karyotypes and also C-band and Ag-NOR banding properties were recorded for the two species of Oxynoemacheilus. The diploid chromosome number is 50 and karyotypes contained 34 biarmed and 16 monoarmed chromosomes in Oxynoemacheilus axylos Yoǧurtçuoǧlu et al. 2022. In O. nasreddini Yoǧurtçuoǧlu et al. 2021, there are 30 biarmed and 20 monoarmed chromosomes. No heteromorphic sex chromosomes were determined. C-band patterns and the number of Ag-NORs were different between the two studied species.