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    Nucleolar organizer region distribution in Nannospalax ehrenbergi (Nehring, 1898) (Rodentia: Spalacidae) from Iraq
    (Tubitak Scientific & Technical Research Council Turkey, 2014) Coskun, Yuksel; Baydemir, Nursel Asan; Kaya, Alaettin; Karoz, Ayse Merve
    The distribution of nucleolar organizer regions (NORs) in Nannospalax ehrenbergi from Iraq was determined for the first time. In the karyotype of N. ehrenbergi the diploid number, fundamental number, and fundamental autosomal number were 52, 76, and 72, respectively. NORs occur in the telomeric regions of submetacentric and acrocentric autosome pairs.
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    Variation of Nucleolar Organizer Regions in Two 2n=48 Chromosomal Forms of Nannospalax nehringi (Satunin, 1898) (Rodentia: Spalacidae) from North-eastern Anatolia
    (Inst Zoology, Bas, 2018) Coskun, Yuksel; Baydemir, Nursel Asan; Kaya, Alaettin
    We describe the Ag-NOR distribution in two 2n=48 populations of blind mole rats of the genus Nannospalax from two localities (Caldiran and Asagisutasli) in the Van and Igdir Provinces in North-eastern Anatolia, Turkey. The karyotypes of the studied populations differed in the proportion of biarmed and acrocentric autosomes (NFa=64 and 68, respectively). The nucleolar organizer regions (NORs) occurred on four autosomal pairs in the Van population whereas only three NOR-bearing autosomal pairs were detected in the Igdir population. The karyotype of the individuals from the Igdir population was similar to the previously studied population from the Van-Erci Province. This similarity indicated that geographical barriers did not limit dispersal of the cytotype with NFa=68 chromosomal form in North-eastern Anatolia.