Document Type : Genetic
Authors
1
Department of Environment, Faculty of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran
2
Department of Environmental Science, Faculty of Natural Resources, University of Tehran, Karaj, Iran
3
Department of Animal Sciences and Biotechnology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran, Iran
4
Department of Environmental Sciences, Faculty of Agriculture and Natural Resources, Arak University, Arak, Iran
Abstract
To study the genetic diversity of the Yellow ground squirrel (Spermophilus fulvus) in Iran, 79 tissue samples were collected from seven provinces (Razavi Khorasan, North Khorasan, Zanjan, Qazvin, Alborz, Hamedan and Kurdistan). Following DNAisolationandpolymerase chain reaction (PCR), genetic variation was investigated using the complete sequencingof the mitochondrial Cytochrome b (cyt b) (1140 bp). Results of Bayesian and maximum likelihood trees based on cyt b using 79 individuals showed that the Yellow ground squirrel was divided into three main mtDNA clades from eastern to western Iran. Clade IR1 included populations from eastern and northeastern Iran, along with individuals from Iran-Turkmenistan-Afghanistan borderline. Clade IR2 included populations from northeastern and western provinces of Iran (North Khorasan, Razavi Khorasan, Zanjan, and Kurdistan provinces), whereas Clade IR3 included populations from western Iran (Hamedan, Qazvin, and Alborz provinces). Our study reveals Iranian populations of the Yellow ground squirrel have undergone sudden range expansions. Based on the genetic diversity analyses, 26 unique haplotypes and 35 informative sites were detected, implying high levels of genetic and haplotype diversity. Additionally, an analysis of molecular variance (AMOVA) and fixation index (FST) confirmed a significant genetic structure among the main groups and populations. Finally, our results, based on the mitochondrial genealogy, recommend that the distinct clades of S. fulvus should be recognized as ESUs and be the focus of conservation efforts in the hope of securing the long-term persistence of the Yellow ground squirrel in Iran.
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