Yazar "Cetinturk, Derya" seçeneğine göre listele

Listeleniyor 1 - 4 / 4
  • Küçük Resim Yok
    Öğe
    An assessment on biometric differentiation depend on distribution of the Anatolian Jird Meriones tristrami (Mammalia: Rodentia) Subpopulations in Turkey
    (Kahramanmaras Sutcu Imam Univ Rektorlugu, 2021) Yigit, Nuri; Colak, Ercument; Saygili Yigit, Fulya; Colak, Reyhan; Cetinturk, Derya
    The Anatolian Jird Meriones tristrami is a widespread rodent species in Anatolian steps. In the study, to determine the relationships between the subpopulations of species and to clarify their distributions, 233 adults samples representing Turkey under the 12 groups, according to their recorded geographical localities, were compared biometrically. For this purpose, measurements of the four external morphological and twenty-seven cranial characters of the groups were analyzed statistically. Despite the high similarity of their biometric characters due to their belonging to the same species, subpopulations were separated from each other with small differences. In the cluster tree (UPGMA), Manisa and Kastamonu subpopulations were noticeably similar with Karaman and Ankara subpopulations. Kilis and Sanliurfa subpopulations were linked to the Western and Central Anatolian groups, and these two subpopulations were observed to be close to the groups that include Malatya and Kayseri samples. Igdir subpopulation was among the Central and Western Anatolia and Southeastern Anatolia groups. The existence of these biometric relationships in the groups supports the hypothesis that the spread of this species to the west of Anatolia should have been by following a route from the north rather than the south of Central Anatolia. In addition, it is predicted that biometric differentiation between subspecies is formed by the effect of geographical features of Anatolia.
  • Küçük Resim Yok
    Öğe
    Genetic differentiation of the Meriones tristrami (Mammalia: Rodentia) subpopulations in Turkey - inferring allozyme variations
    (TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEY, 2016) Yigit, Nuri; Saygili Yigit, Fulya; Colak, Ercument; Colak, Reyhan; Cetinturk, 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. F-ST 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.
  • Küçük Resim Yok
    Öğe
    Phylogenetic and Phylogeographic Relationships of Populations of Meriones tristrami Thomas, 1892 (Rodentia: Gerbillinae) in Turkey as Inferred from Cytochrome-b and RFLP Analysis
    (Inst Zoology, Bas, 2020) Yigit, Nuri; Colak, Ercument; Markov, Georgi; Yigit, Fulya Saygili; Colak, Reyhan; Cetinturk, Derya; Seker, Perincek Seckin Ozan
    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.
  • Küçük Resim Yok
    Öğe
    Vkorc1 gene polymorphisms confer resistance to anticoagulant rodenticide in Turkish rats
    (Peerj Inc, 2023) Yigit, Nuri; Duman, Mustafa T.; Cetinturk, Derya; Saygili-Yigit, Fulya; Colak, Ercument; Colak, Reyhan
    Mutations in Exon 1, 2 and 3 of the vitamin K epoxide reductase complex subunit 1 (Vkorc1) gene are known to lead to anticoagulant rodenticide resistance. In order to investigate their putative resistance in rodenticides, we studied the genetic profile of the Vkorc1 gene in Turkish black rats (Rattus rattus) and brown rats (Rattus norvegicus). In this context, previously recorded Ala21Thr mutation (R. rattus) in Exon 1 region, Ile90Leu mutation (R. rattus, R. norvegicus) in Exon 2 region and Leu120Gln mutation (R. norvegicus) in Exon 3 region were identified as missense mutationscausing amino acid changes. Ala21Thr mutation was first detected in one specimen of Turkish black rat despite the uncertainty of its relevance to resistance. Ile90Leu mutation accepted as neutral variant was detected in most of black rat specimens. Leu120Gln mutation related to anticoagulant rodenticide resistance was found in only one brown rat specimen. Furthermore, Ser74Asn, Gln77Pro (black rat) and Ser79Pro (brown rat) mutations that cause amino acid changes in the Exon 2 region but unclear whether they cause resistance were identified. In addition, silent mutationswhich do not cause amino acid changes were also defined; these mutations were Arg12Arg mutation in Exon 1 region, His68His, Ser81Ser, Ile82Ile and Leu94Leu mutations in Exon 2 region and Ile107Ile, Thr137Thr, Ala143Ala and Gln152Gln mutations in Exon 3 region. These silent mutations were found in both species except for Ser81Ser which was determined in only brown rats.