شمال ايران CAP؟TA CAP؟TA و دو گروه از BARBUS MURSA BARBUS CAPITO مطالعه كاريولوژيك ماهيان

A Karyological Study of Barbus capito , Barbus mursa and Two Populations of Capoeta capoeta From Northern Iran

Karyotypic studies of two species of fishes namely Barbus capito , Barhus mursa as well as two populations of Capoeta capoeta gracilis have been investigated. Karyotypic analysis showed that B. Capito and B. mursa chosen from Sefidroud and Shahroud rivers (Roudbar township in Guilan province) carry diploid chromosome number as well as fundamental number(NF) of respectively 2n= 100, NF=172 and 2n= 100, NF=140. The first region chosen from Sefidroud and Shahroud rivers (Roudbar township in Guilan province) carries 2n=150, NF=234 and the second region (chosen from Golestan National Park) exhibits 2n-150, NF=230. Polyploidy has been observed in these species while ploymorphism being observed in Fundamental Number in both regions, populations of Capoeta capoeta gracilis.