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    A new karyotype and chromosomal banding pattern in Nannospalax ehrenbergi (Nehring, 1898) (Rodentia: Spalacidae) from southeast Anatolia, Turkey
    (Firenze Univ Press, 2015) Coskun, Yuksel; Baydemir, Nursel Asan; Kayaa, Alaettin; Karoz, Ayse Merve
    This paper presents new data on chromosomes of the Palestine mole rat, Nannospalax ehrenbergi, from southeast Anatolia, Turkey. A new chromosomal form, 2n = 56, NF = 62 and NFa = 58, is determined from the region. C-banding revealed pericentromeric constitutive heterochromatin in one submetacentric and seven acrocentric autosome pairs. Two acrocentric autosome pairs and an acrocentric chromosome with a secondary constriction showed interstitial C-positive bands on their long arms. A secondary constriction was detected in the Y chromosome. The NORs were observed in one medium-sized metacentric autosome pair, and in four acrocentric pairs of autosomes.
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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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    The tunnel structure of blind mole rats (genus Spalax) in Turkey
    (Taylor & Francis Ltd, 2010) Yagci, Tuba; Coskun, Yuksel; Asan, Nursel
    The structure of the tunnels and burrows of mole rats (genus Spalax) was examined in Central and Southeastern Anatolia in the years 2002-2009. There are two types of mounds: linear ones and scattered ones. While a one-layer tunnel structure is observed in nearly all parts of Turkey, we also found three-layer tunnels, which were made in soft and moist soil. The tunnels made in moist soil were deeper than the ones made in hard soil. We found that mole rats blend the soil with their urine and produce a sticky mud with a bad odour in order to strengthen the walls of the opened galleries.
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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.