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Characterization of the complete mitochondrial genome of Otus lettia : exploring the mitochondrial evolution and phylogeny of owls (Strigiformes)
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Characterization of the complete mitochondrial genome of Otus lettia : exploring the mitochondrial evolution and phylogeny of owls (Strigiformes)
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Characterization of the complete mitochondrial genome of Otus lettia : exploring the mitochondrial evolution and phylogeny of owls (Strigiformes)
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Journal Article
Characterization of the complete mitochondrial genome of Otus lettia : exploring the mitochondrial evolution and phylogeny of owls (Strigiformes)
2021
Overview
Large-scale molecular phylogenetic studies of the avian order Strigiformes have been performed, and numerous mitochondrial genomes have been determined. However, their intergeneric relationships are still controversial, and few comprehensive comparative analyses of mitochondrial genomes have been conducted on Strigiformes. In this study, the mitochondrial genome of Otus lettia was determined and compared with other Strigiformes. The O. lettia mitochondrial genome was 16,951 bp in size. For Strigiformes, atp8 can be used as a suitable molecular marker for population genetic diversity, while cox1 is a candidate barcoding marker for species identification. All protein-coding genes may be under strong purifying selection pressure, and one extra cytosine insertion located in nad3 is common to all owls except Tyto longimembris, T. alba, and Athene noctua. Four different mitochondrial gene arrangement types were found among the Strigiformes mitogenomes, and their evolutionary relationship between each other can be perfectly explained by the tandem duplication and random loss model. The phylogenetic topologies using the mitochondrial genomes showed that target species O. lettia had a closer relationship with O. scops + O. sunia than O. bakkamoena, the genus Glaucidium was paraphyletic, and the Ninox clade was located at the basal position of Strigidae lineage. Our phylogenetic trees also supported the previous recommendations that Sceloglaux albifacies, Ciccaba nigrolineata, and Ketupa flavipes should be transferred to Ninox, Strix, and Bubo, respectively. These findings will be helpful in further unraveling the mitochondrial evolution and phylogeny of Strigiformes.
Publisher
Taylor & Francis Ltd,Taylor & Francis,Taylor & Francis Group
Subject
