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    Genetic differentiation of the Merionestristrami (Mammalia: Rodentia)subpopulations in Turkeyinferring allozyme variations
    (2016) Yiğit, Nuri; Saygılı, Fulya Yiğit; Çolak, Ercüment; Çolak, Reyhan; Çetintürk, Derya
    Allozyme variations of Tristram s jird Meriones tristrami, which is distributed in the steppe and semiarid areas of Turkey, were studied using 24 loci of 83 specimens from ten locations in Turkey. Seven loci were found to be polymorphic. According to the patterns of allozyme variation, the percentage of polymorphic loci was 12.5. FST was found to be 0.44, indicating high genetic variations among M. tristrami; accordingly the Nm value (0.3157) appeared quite low. The UPGMA dendrogram, based on genetic distance, showed that the populations established two very close subclusters, and supported the idea that the westernmost population connected to the northern part of the central Anatolian population. As expected, the eastern population appeared to be more divergent due to geographic distance. Our findings supported that genetic isolation among these subpopulations might be caused by geographic isolation.
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    Phylogenetic and phylogeographic relationships of populations of Meriones tristrami Thomas, 1892 (Rodentia: Gerbillinae) in Turkey as inferred from Cytochrome-b and RFLP analysis
    (Bulgarska Akademiya na Naukite, 2020) Yiğit, Nuri; Çolak, Ercüment; Markov, Georgi; Yiğit, Fulya Saygılı; Çolak, Reyhan; Çetintürk, Derya; Ozan Şeker, Perinçek Seçkin
    The present study aimed to reveal the relationship between the genetic diversity of Tristram’s jird Meriones tristrami subpopulations by using cyt-b sequences, the amplified fragments of cyt-b produced by restriction endonuclease (RFLP; Msp I, Rsa I, Noc I and Hae III were used) and the distribution on the Anatolian Peninsula. Eighteen haplotypes were identified in the subpopulations of this species, with the highest nucleotide diversity in the Central Anatolia. The haplotype diversity was determined to be 0.970 among subpopulations. The fixation index (Fst) and the gene flow parameter (Nm) based on cyt-b sequences showed the effective gene flow between the western and south-eastern subpopulations. Both cyt-b sequences and RFLP analyses produced almost similar topology in the Bayesian and UPGMA trees, indicating a gene flow from subpopulations of the South-east to Central Anatolia and the Western Black Sea coast. The main factor for the genetic diversity is considered to be the intermittent distribution from west to east as a result of the great altitude of the Eastern Anatolian Plateau as well as the sea and lake system fragmenting the territory of Anatolia in the Pliocene – Pleistocene Age. © 2020 Bulgarian Academy of Sciences. All rights reserved.