NOR Phenotype of Cyprinion macrostomus (Osteichthyes, Cyprinidae)

Abstract

In this study, nucleolus organizer regions of Cyprinion macrostomus were investigated. The diploid number of chromosomes of this species was 2n=50 consisting of three pairs of metacentric, 12 pairs of submetacentric, six pairs of subtelocentric and four pairs of acrocentric chromosomes. The nucleolus organizer regions were detected at the end of the short arms of two pairs of medium sized submetacentric chromosomes. Nucleolus organizer region patterns were nearly identical with what that found in most other representatives of the Eurasian Cyprinids.In this study, nucleolus organizer regions of Cyprinion macrostomus were investigated. The diploid number of chromosomes of this species was 2n=50 consisting of three pairs of metacentric, 12 pairs of submetacentric, six pairs of subtelocentric and four pairs of acrocentric chromosomes. The nucleolus organizer regions were detected at the end of the short arms of two pairs of medium sized submetacentric chromosomes. Nucleolus organizer region patterns were nearly identical with what that found in most other representatives of the Eurasian Cyprinids.