Mitochondrial Genomes of <i>Streptopelia decaocto</i>: Insights into Columbidae Phylogeny
Jiangyong Qu | Xiaofei Lu | Xindong Teng | Zhikai Xing | Shuang Wang | Chunyu Feng | Xumin Wang | Lijun Wang
In this research, the mitochondrial genome of the <i>Streptopelia decaocto</i> was sequenced and examined for the first time to enhance the comprehension of the phylogenetic relationships within the Columbidae. The complete mitochondrial genome of <i>Streptopelia decaocto</i> (17,160 bp) was structurally similar to the recognized members of the Columbidae family, but with minor differences in gene size and arrangement. The structural AT content was 54.12%. Additionally, 150 mitochondrial datasets, representing valid species, were amassed in this investigation. Maximum likelihood (ML) and Bayesian inference (BI) phylogenetic trees and evolutionary time relationships of species were reconstructed based on cytb gene sequences. The findings from the phylogenetic evaluations suggest that the <i>S. decaocto</i> was classified under the Columbinae subfamily, diverging from the Miocene approximately 8.1 million years ago, indicating intricate evolutionary connections with its close relatives, implying a history of species divergence and geographic isolation. The diversification of the Columbidae commenced during the Late Oligocene and extended into the Miocene. This exploration offers crucial molecular data for the <i>S. decaocto</i>, facilitating the systematic taxonomic examination of the Columbidae and Columbiformes, and establishing a scientific foundation for species preservation and genetic resource management.
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