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Characterization of the complete mitochondrial genome of the Reeves' muntjac Muntiacus reevesi (Artiodactyla, Ruminantia, Cervidae) and its phylogeny.

ABSTRACT: We present the complete mitogenome of Muntiacus reevesi. We found that the mitogenome of this circle is 16,535 bp in size and includs 13 protein-coding genes, 22 transfer RNA genes, two ribosomal RNA genes, and one noncoding control region (D-loop) that are conserved in most Cervidae mitogenomes. The total base composition of the Muntiacus reevesi mitogenome is 33.18% A, 28.99 % T, 24.43% C, and 13.40% G, which is typical for mammalian mitogenomes. Phylogenetic analyses. Phylogenetic analyses showed that M. reevesi clustered with M. vuquangensis and M. putaoensis as a branch and that they are closely genetically related.

SUBMITTER: Huang Y

PROVIDER: S-EPMC8725897 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature

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Characterization of the complete mitochondrial genome of the Reeves' muntjac <i>Muntiacus reevesi</i> (Artiodactyla, Ruminantia, Cervidae) and its phylogeny.

Huang Yi Y Gao Qin Q Mei Liping L Lei Linghan L Yang Jingtian J Hu Jinyao J

Mitochondrial DNA. Part B, Resources 20211228 1

We present the complete mitogenome of <i>Muntiacus reevesi</i>. We found that the mitogenome of this circle is 16,535 bp in size and includs 13 protein-coding genes, 22 transfer RNA genes, two ribosomal RNA genes, and one noncoding control region (D-loop) that are conserved in most Cervidae mitogenomes. The total base composition of the Muntiacus reevesi mitogenome is 33.18% A, 28.99 % T, 24.43% C, and 13.40% G, which is typical for mammalian mitogenomes. Phylogenetic analyses. Phylogenetic anal ...[more]

PMID: 34993337

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Project description:BackgroundMolecular phylogenetics has provided unprecedented resolution in the ruminant evolutionary tree. However, molecular age estimates using only one or a few (often misapplied) fossil calibration points have produced a diversity of conflicting ages for important evolutionary events within this clade. I here identify 16 fossil calibration points of relevance to the phylogeny of Bovidae and Ruminantia and use these, individually and together, to construct a dated molecular phylogeny through a reanalysis of the full mitochondrial genome of over 100 ruminant species.ResultsThe new multi-calibrated tree provides ages that are younger overall than found in previous studies. Among these are young ages for the origin of crown Ruminantia (39.3-28.8 Ma), and crown Bovidae (17.3-15.1 Ma). These are argued to be reasonable hypotheses given that many basal fossils assigned to these taxa may in fact lie on the stem groups leading to the crown clades, thus inflating previous age estimates. Areas of conflict between molecular and fossil dates do persist, however, especially with regard to the base of the rapid Pecoran radiation and the sister relationship of Moschidae to Bovidae. Results of the single-calibrated analyses also show that a very wide range of molecular age estimates are obtainable using different calibration points, and that the choice of calibration point can influence the topology of the resulting tree. Compared to the single-calibrated trees, the multi-calibrated tree exhibits smaller variance in estimated ages and better reflects the fossil record.ConclusionsThe use of a large number of vetted fossil calibration points with soft bounds is promoted as a better approach than using just one or a few calibrations, or relying on internal-congruency metrics to discard good fossil data. This study also highlights the importance of considering morphological and ecological characteristics of clades when delimiting higher taxa. I also illustrate how phylogeographic and paleoenvironmental hypotheses inferred from a tree containing only extant taxa can be problematic without consideration of the fossil record. Incorporating the fossil record of Ruminantia is a necessary step for future analyses aiming to reconstruct the evolutionary history of this clade.

Dataset Information

Characterization of the complete mitochondrial genome of the Reeves' muntjac Muntiacus reevesi (Artiodactyla, Ruminantia, Cervidae) and its phylogeny.

Publications

Characterization of the complete mitochondrial genome of the Reeves' muntjac <i>Muntiacus reevesi</i> (Artiodactyla, Ruminantia, Cervidae) and its phylogeny.

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