Yazar "Ibis, Osman" seçeneğine göre listele

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    Complete mitogenomes of Turkish tree squirrels, Sciurus anomalus and S. vulgaris, (Sciuridae: Rodentia: Mammalia) and their phylogenetic status within the tribe Sciurini
    (Elsevier, 2022) Ibis, Osman; Selcuk, Ahmet Yesari; Teber, Saffet; Baran, Mehmet; Kaya, Alaettin; Ozcan, Servet; Kefelioglu, Haluk
    The genus Sciurus, a member of the family Sciuridae, is widely distributed in the Holarctic region. To better understand mitogenomic characteristics and to reveal internal phylogenetic relationships of the genus, 20 complete mitogenomes of Turkish tree squirrels were successfully sequenced for the first time, including 19 for S. anomalus (from 16,505 bp to 16,510 bp) and one for S. vulgaris (16,511 bp). The mitogenomes of two species were AT-biased. All tRNAs for two species displayed a typical clover-leaf structure, except for tRNA(Ser(AGY)). The tRNA Serine1 (S1)-GCT structure lacked the dihydrouridine (DHU) loop and stem. Based on mitogenomic dataset for phylogeny of Sciurinae, phylogenetic analyses (Bayesian Inference and Maximum Likelihood) did not support monophyly of Sciurus and proposed that S. anomalus, the most basal taxa in the Sciurini tribe, had at least five mitogenome lineages, which were also supported by network analysis. The dissimilarities among the five line-ages of S. anomalus ranged from 0.0042 (0.42%) to 0.0062 (0.62%) using K2P sequence pairwise distances. In addition to this mitogenomic analysis result, phylogenetic analyses using the CYTB +D-loop dataset proposed the existence of at least nine lineages for S. anomalus, which was different than those of the previous studies. The current study proposed that the use of mitogenomic data for reconstructing the phylogeny of Turkey's Sciurus holds an important value for revealing evolutionary relationships.
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    Öğe
    Insights into the Turkish and Iranian badgers (the genus Meles) based on the mitochondrial cytochrome b gene sequences
    (Staatliches Museum Tierkunde Dresden, 2015) Ibis, Osman; Tez, Coskun; Ozcan, Servet; Yorulmaz, Tarkan; Kaya, Alaettin; Mohradi, Mohammad
    To investigate the genetic diversity and phylogenetic status of Eurasian badgers (genus Meles) from Turkey and Iran, we used sequence data from the complete mitochondrial cytochrome b gene (1140 bp) and examined 11 samples from Turkey and one sample from Iran. Relying on Bayesian, Maximum Likelihood, Neighbor-Joining and Network methods, significant genetic differences corresponding to Meles meles from the European part and Meles canescens from the Asian part of Turkey and from Iran confirmed previous genetic and morphometric results and provide another example for the barrier effect of the Bosphorus and Dardanelle Straits for mammalian species. Additionally, this study suggested that the Asian samples of Turkish badgers have a relatively high genetic diversity.